Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Earth System Governance : Science and Implementation Plan of the Earth System Governance Project 2018
    Burch, Sarah ; Gupta, A. ; Yumie Aoki Inoue, Christina ; Kalfagianni, Agni ; Persson, Asa ; Heijden, Jeroen van der; Vervoort, Joost ; Adler, Carolina ; Bloomfield, Michael John ; Djalante, Riyanti ; Dryzek, John S. ; Galaz, Victor ; Gordon, Christopher ; Harmon, Renee ; Jinnah, Sikina ; Kim, Rakhyun E. ; Olsson, Lennart ; Leeuwen, J. van; Ramasar, Vasna ; Wapner, Paul ; Zondervan, Ruben - \ 2019
    Utrecht : Earth System Governance - 128 p.
    Giving added value to products from biomass: the role of mathematical programming in the product-driven process synthesis framework
    Zderic, Aleksandra ; Kiskini, Alexandra ; Tsakas, E. ; Rivera, Cristhian Almeida ; Zondervan, E. - \ 2019
    In: 29th European Symposium on Computer Aided Process Engineering. - Elsevier B.V. (Computer Aided Chemical Engineering ) - ISBN 9780128186343 - p. 1591 - 1596.
    agro-food products - mathematical programming - Product-driven process synthesis

    In the first years of the 2000’s the late professor Peter Bongers introduced together with his co-workers at Unilever a design methodology that could be applied in the development of new products and processes for structured food products; the product-driven process synthesis method (PDPS). The method was successfully employed in the following years, designing new products from different bio based sources. Although researchers used the method and even made improvements; the structural incorporation of mathematical programming tools has been lacking and this seems to be a crucial component for decision-making processes. In this contribution we will discuss the possibilities to extend the PDPS framework with several of these optimization tools.

    A Systematic Parameter Study on Film Freeze Concentration
    Vuist, Jan Eise ; Schutyser, Maarten ; Boom, Remko - \ 2019
    In: 29th European Symposium on Computer Aided Process Engineering. - Elsevier B.V. (Computer Aided Chemical Engineering ) - ISBN 9780128186343 - p. 1501 - 1506.
    freeze concentration - modelling - solute inclusion

    Film freeze concentration is an alternative method to concentrate aqueous streams compared to suspension freeze concentration. Major advantage is that the equipment is less complex and thus capital costs are in principle lower. In our research we investigated especially how hydrodynamics, applied freezing temperatures and solution properties influence inclusion of solutes in ice and ice yield during film freeze concentration. For this we carried out both lab-scale experiments and CFD simulations. Model solutions of sucrose and maltodextrin were concentrated in a stirred vessel by growth of an ice layer at the bottom freezing plate. For varying stirring speeds, feed concentrations and freezing plate temperature profiles we determined the solute inclusion in the grown ice and the ice yield. When increasing stirrer speeds a decreasing amount of solute included in ice was found at constant freezing plate temperature. This can be explained because the transport of the solute molecules in the boundary layer is diffusion limited. An increase in shear above the surface reduces the thickness of this layer and therefore less solute is included in ice at high shear rates. CFD simulations were carried out to describe the hydrodynamics near the surface and to relate the shear rate to the impeller Reynolds number. Moreover, the CFD simulations could explain the increased solute inclusions for higher concentrations of sucrose as higher viscosities lead to significant reduction of shear rates close to the ice layer. The CFD simulations will facilitate easier translation of the obtained results for a differently designed film freeze concentration system. Sucrose and maltodextrin appeared to behave very similar with respect to inclusion behaviour, which may be explained from their similar diffusivities. Ice growth rate is found another important factor and is very much influence by applied freezing temperatures. Our experiments showed that there is a critical ice growth rate. If this ice growth rate is exceeded more solutes will be included in the ice layer. In this case the solute molecules will not have the chance to move away from the ice boundary. The next step in our research is modelling of the ice growth rate as function of the freezing plate temperature to optimise both ice yield and solute inclusion.

    New directions in earth system governance research
    Burch, Sarah ; Gupta, A. ; Inoue, C. ; Kalfagianni, Agni ; Persson, Asa ; Gerlak, Andrea K. ; Ishii, Atsushi ; Patterson, James ; Pickering, Jonathan ; Scobie, M. ; Heijden, Jeroen van der; Vervoort, J. ; Adler, Carolina ; Bloomfield, Michael ; Djalante, Riyante ; Dryzek, John ; Galaz, Victor ; Gordon, Christopher ; Harmon, Renée ; Jinnah, Sikina ; Kim, Rakhyun E. ; Olsson, Lennart ; Leeuwen, J. van; Ramasar, Vasna ; Wapner, Paul ; Zondervan, R. - \ 2019
    Earth System Governance 1 (2019). - ISSN 2589-8116 - 18 p.
    Governance - Research networks - Earth system - Transformation
    The Earth System Governance project is a global research alliance that explores novel, effective governance mechanisms to cope with the current transitions in the biogeochemical systems of the planet. A decade after its inception, this article offers an overview of the project's new research framework (which is built upon a review of existing earth system governance research), the goal of which is to continue to stimulate a pluralistic, vibrant and relevant research community. This framework is composed of contextual conditions (transformations, inequality, Anthropocene and diversity), which capture what is being observed empirically, and five sets of research lenses (architecture and agency, democracy and power, justice and allocation, anticipation and imagination, and adaptiveness and reflexivity). Ultimately the goal is to guide and inspire the systematic study of how societies prepare for accelerated climate change and wider earth system change, as well as policy responses.
    SyNDI: synchronous network data integration framework
    Lindfors, Erno ; Dam, Jesse van; Lam, Carolyn Ming Chi ; Zondervan, Niels ; Martins dos Santos, Vitor ; Suarez Diez, Maria - \ 2018
    LifeGlimmer
    Synchronous network visualization - workflow - Cytoscape - Galaxy - network biology - systems biology - Mycobacterium tuberculosis - Staphylococcus aureus
    Background Systems biology takes a holistic approach by handling biomolecules and their interactions as big systems. Network based approach has emerged as a natural way to model these systems with the idea of representing biomolecules as nodes and their interactions as edges. Very often the input data come from various sorts of omics analyses. Those resulting networks sometimes describe a wide range of aspects, for example different experiment conditions, species, tissue types, stimulating factors, mutants, or simply distinct interaction features of the same network produced by different algorithms. For these scenarios, synchronous visualization of more than one distinct network is an excellent mean to explore all the relevant networks efficiently. In addition, complementary analysis methods are needed and they should work in a workflow manner in order to gain maximal biological insights. Results In order to address the aforementioned needs, we have developed a Synchronous Network Data Integration (SyNDI) framework. This framework contains SyncVis, a Cytoscape application for user-friendly synchronous and simultaneous visualization of multiple biological networks, and it is seamlessly integrated with other bioinformatics tools via the Galaxy platform. We demonstrated the functionality and usability of the framework with three biological examples - we analyzed the distinct connectivity of plasma metabolites in networks associated with high or low latent cardiovascular disease risk; deeper insights were obtained from a few similar inflammatory response pathways in Staphylococcus aureus infection common to human and mouse; and regulatory motifs which have not been reported associated with transcriptional adaptations of Mycobacterium tuberculosis were identified. Conclusions Our SyNDI framework couples synchronous network visualization seamlessly with additional bioinformatics tools. The user can easily tailor the framework for his/her needs by adding new tools and datasets to the Galaxy platform.
    SyNDI : Synchronous network data integration framework
    Lindfors, Erno ; Dam, Jesse C.J. van; Lam, Carolyn Ming Chi ; Zondervan, Niels A. ; Martins dos Santos, Vitor A.P. ; Suarez-Diez, Maria - \ 2018
    BMC Bioinformatics 19 (2018)1. - ISSN 1471-2105
    Cytoscape - Galaxy - Mycobacterium tuberculosis - Network biology - Staphylococcus aureus - Synchronous network visualization - Systems biology - Workflow

    Background: Systems biology takes a holistic approach by handling biomolecules and their interactions as big systems. Network based approach has emerged as a natural way to model these systems with the idea of representing biomolecules as nodes and their interactions as edges. Very often the input data come from various sorts of omics analyses. Those resulting networks sometimes describe a wide range of aspects, for example different experiment conditions, species, tissue types, stimulating factors, mutants, or simply distinct interaction features of the same network produced by different algorithms. For these scenarios, synchronous visualization of more than one distinct network is an excellent mean to explore all the relevant networks efficiently. In addition, complementary analysis methods are needed and they should work in a workflow manner in order to gain maximal biological insights. Results: In order to address the aforementioned needs, we have developed a Synchronous Network Data Integration (SyNDI) framework. This framework contains SyncVis, a Cytoscape application for user-friendly synchronous and simultaneous visualization of multiple biological networks, and it is seamlessly integrated with other bioinformatics tools via the Galaxy platform. We demonstrated the functionality and usability of the framework with three biological examples - we analyzed the distinct connectivity of plasma metabolites in networks associated with high or low latent cardiovascular disease risk; deeper insights were obtained from a few similar inflammatory response pathways in Staphylococcus aureus infection common to human and mouse; and regulatory motifs which have not been reported associated with transcriptional adaptations of Mycobacterium tuberculosis were identified. Conclusions: Our SyNDI framework couples synchronous network visualization seamlessly with additional bioinformatics tools. The user can easily tailor the framework for his/her needs by adding new tools and datasets to the Galaxy platform.

    Regulation of three virulence strategies of Mycobacterium tuberculosis : A success story
    Zondervan, Niels A. ; Dam, Jesse C.J. Van; Schaap, Peter J. ; Martins dos Santos, Vitor A.P. ; Suarez-Diez, Maria - \ 2018
    International Journal of Molecular Sciences 19 (2018)2. - ISSN 1661-6596
    CAMP - Divalent metal - Dormancy - Escape - Esx - Immune modulation - Iron - Manganese - Mycobacteria - Phagosome rupture - Pore - Virulence - Zinc
    Tuberculosis remains one of the deadliest diseases. Emergence of drug-resistant and multidrug-resistant M. tuberculosis strains makes treating tuberculosis increasingly challenging. In order to develop novel intervention strategies, detailed understanding of the molecular mechanisms behind the success of this pathogen is required. Here, we review recent literature to provide a systems level overview of the molecular and cellular components involved in divalent metal homeostasis and their role in regulating the three main virulence strategies of M. tuberculosis: immune modulation, dormancy and phagosomal rupture. We provide a visual and modular overview of these components and their regulation. Our analysis identified a single regulatory cascade for these three virulence strategies that respond to limited availability of divalent metals in the phagosome.
    FAD vs. free school : Effort allocation by Marine Stewardship Council compliant Filipino tuna purse seiners in the PNA
    Tolentino-Zondervan, Frazen ; Berentsen, Paul ; Bush, Simon R. ; Oude Lansink, Alfons - \ 2018
    Marine Policy 90 (2018). - ISSN 0308-597X - p. 137 - 145.
    Effort allocation - Filipino - Marine Stewardship Council - Purse seine - Risk aversion
    This paper assesses the effect of Marine Stewardship Council certification on the allocation of fishing effort by Filipino purse seine fishers operating in the waters of the Parties to the Nauru Agreement. Targeting skipjack tuna, these purse seiners allocate effort under a vessel day scheme to either MSC certified free school fishing or non-MSC certified fishing on fish aggregating devices (FADs). Based on historical catch and price data, the optimal set of fishing activities are determined in terms of the mean and variance of fishers' gross margin at given levels of risk aversion. The results show that MSC certification stimulates fishers to reduce their allocation of effort on non-MSC compliant FADs, and consequently convert this effort to MSC compliant free school purse seining. In general, the MSC also increases the yearly gross margin of fishers as compared to the situation without MSC certification. The MSC therefore appears to be effective to a certain extent in promoting a transition to more sustainable fishing practices. However, the results also indicate that the risk profile of fishers is a key but underexplored dimension of assessing the potential impact of MSC certification on effort allocation.
    Towards sustainable tuna fishing: understanding the role of private incentive mechanisms
    Tolentino-Zondervan, Frazen - \ 2017
    Wageningen University. Promotor(en): A.G.J.M. Oude Lansink; S.R. Bush, co-promotor(en): P.B.M. Berentsen. - Wageningen : Wageningen University - ISBN 9789463436236 - 205
    tuna - fishing - sustainability - sea fishing - marine fisheries - marine animals - environmental protection - value chain analysis - decision making - philippines - south east asia - business economics - tonijn - vis vangen - duurzaamheid (sustainability) - sportzeevisserij - zeevisserij - zeedieren - milieubescherming - waardeketenanalyse - besluitvorming - filippijnen - zuidoost-azië - bedrijfseconomie

    Unsustainable fishing practices, including the use of non-selective fishing methods and Illegal Unreported and Unregulated (IUU) fishing, contribute to the decline of tuna fish stocks in the Western and Central Pacific Ocean (WCPO). This has led to emergence of different public and private governance arrangements to foster the sustainable exploitation of tuna stocks. This thesis focuses on the performance of three innovative private incentive mechanisms: Fishery Improvement Projects (FIPs), International Seafood Sustainability Foundation’s Pro-active Vessel Register and eco-FADs, and Marine Stewardship Council (MSC) certification, to deliver economic incentives for improved production. The overall objective of this thesis is to evaluate the extent to which private incentive mechanisms influence Filipino fishers’ decision to improve their fishing practices.

    In order to address the overall objective, this thesis first analyses and compares the ways existing private incentive mechanisms influence the upgrading strategies of Filipino tuna fishers in the value chains (in chapter 2). Second, it evaluates the important determinants for small-scale handline fishers’ decisions to participate in two FIPs for yellowfin tuna in the Philippines (in chapter 3). Third, it examines the effect of MSC certification on the allocation of fishing days by Filipino purse seiners operating in Parties to Nauru Agreement (in chapter 4). And finally, it analyses the profitability of investments in measures needed to comply with private incentive mechanisms by Filipino purse seiners (in chapter 5).

    The findings show that overall, the incentive mechanisms are able to improve the practices of fishers, however only to a limited extent. The first two chapters (chapters 2 and 3) show that producers first need to have the capabilities to meet the requirements of private incentive mechanisms, so that they can be included in the value chain and that they can realise the incentives offered by these mechanisms. However, being capable does not guarantee that producers will improve their practices. As shown in the last two chapters (chapters 4 and 5), producers must also have the willingness to upgrade, based on their risk attitude and on the ability of the economic incentive to cover the additional costs and to compensate for the increase of the risks of participation of producers. Given that producers have the availability of capabilities to upgrade and that the benefit is sufficient to opt for participation, then producers may decide to improve their practices, which may contribute to the sustainability improvement goal of private incentive mechanisms. As a consequence of this finding, the incentives, inclusiveness, and improvements must be taken into account in both the design and implementation of private incentive mechanisms.

    Voedselinnovaties in Nederland : een greep uit vernieuwende initiatieven
    Hoes, Anne-Charlotte ; Savelkouls, Carlijn ; Zondervan, Charon ; Beekman, Volkert - \ 2016
    Wageningen : Wageningen Economic Research (Wageningen Economic Research rapport 2016-108) - 14
    Genome-wide analysis identifies 12 loci influencing human reproductive behavior
    Barban, Nicola ; Jansen, Rick ; Vlaming, Ronald de; Vaez, Ahmad ; Mandemakers, Jornt J. ; Tropf, Felix C. ; Shen, Xia ; Wilson, James F. ; Chasman, Daniel I. ; Nolte, Ilja M. ; Tragante, Vinicius ; Laan, Sander W. van der; Perry, John R.B. ; Kong, Augustine ; Ahluwalia, Tarunveer S. ; Albrecht, Eva ; Yerges-Armstrong, Laura ; Atzmon, Gil ; Auro, Kirsi ; Ayers, Kristin ; Bakshi, Andrew ; Ben-Avraham, Danny ; Berger, Klaus ; Bergman, Aviv ; Bertram, Lars ; Bielak, Lawrence F. ; Bjornsdottir, Gyda ; Bonder, Marc Jan ; Broer, Linda ; Bui, Minh ; Barbieri, Caterina ; Cavadino, Alana ; Chavarro, Jorge E. ; Turman, Constance ; Concas, Maria Pina ; Cordell, Heather J. ; Davies, Gail ; Eibich, Peter ; Eriksson, Nicholas ; Esko, Tõnu ; Eriksson, Joel ; Falahi, Fahimeh ; Felix, Janine F. ; Fontana, Mark Alan ; Franke, Lude ; Gandin, Ilaria ; Gaskins, Audrey J. ; Gieger, Christian ; Gunderson, Erica P. ; Guo, Xiuqing ; Hayward, Caroline ; He, Chunyan ; Hofer, Edith ; Huang, Hongyan ; Joshi, Peter K. ; Kanoni, Stavroula ; Karlsson, Robert ; Kiechl, Stefan ; Kifley, Annette ; Kluttig, Alexander ; Kraft, Peter ; Lagou, Vasiliki ; Lecoeur, Cecile ; Lahti, Jari ; Li-Gao, Ruifang ; Lind, Penelope A. ; Liu, Tian ; Makalic, Enes ; Mamasoula, Crysovalanto ; Matteson, Lindsay ; Mbarek, Hamdi ; McArdle, Patrick F. ; McMahon, George ; Meddens, S.F.W. ; Mihailov, Evelin ; Miller, Mike ; Missmer, Stacey A. ; Monnereau, Claire ; Most, Peter J. van der; Myhre, Ronny ; Nalls, Mike A. ; Nutile, Teresa ; Kalafati, Ioanna Panagiota ; Porcu, Eleonora ; Prokopenko, Inga ; Rajan, Kumar B. ; Rich-Edwards, Janet ; Rietveld, Cornelius A. ; Robino, Antonietta ; Rose, Lynda M. ; Rueedi, Rico ; Ryan, Kathleen A. ; Saba, Yasaman ; Schmidt, Daniel ; Smith, Jennifer A. ; Stolk, Lisette ; Streeten, Elizabeth ; Tönjes, Anke ; Thorleifsson, Gudmar ; Ulivi, Sheila ; Wedenoja, Juho ; Wellmann, Juergen ; Willeit, Peter ; Yao, Jie ; Yengo, Loic ; Zhao, Jing Hua ; Zhao, Wei ; Zhernakova, Daria V. ; Amin, Najaf ; Andrews, Howard ; Balkau, Beverley ; Barzilai, Nir ; Bergmann, Sven ; Biino, Ginevra ; Bisgaard, Hans ; Bønnelykke, Klaus ; Boomsma, Dorret I. ; Buring, Julie E. ; Campbell, Harry ; Cappellani, Stefania ; Ciullo, Marina ; Cox, Simon R. ; Cucca, Francesco ; Toniolo, Daniela ; Davey-Smith, George ; Deary, Ian J. ; Dedoussis, George ; Deloukas, Panos ; Duijn, Cornelia M. van; Geus, Eco J.C. de; Eriksson, Johan G. ; Evans, Denis A. ; Faul, Jessica D. ; Sala, Cinzia Felicita ; Froguel, Philippe ; Gasparini, Paolo ; Girotto, Giorgia ; Grabe, Hans-Jörgen ; Greiser, Karin Halina ; Groenen, Patrick J.F. ; Haan, Hugoline G. de; Haerting, Johannes ; Harris, Tamara B. ; Heath, Andrew C. ; Heikkilä, Kauko ; Hofman, Albert ; Homuth, Georg ; Holliday, Elizabeth G. ; Hopper, John ; Hyppönen, Elina ; Jacobsson, Bo ; Jaddoe, Vincent W.V. ; Johannesson, Magnus ; Jugessur, Astanand ; Kähönen, Mika ; Kajantie, Eero ; Kardia, Sharon L.R. ; Keavney, Bernard ; Kolcic, Ivana ; Koponen, Päivikki ; Kovacs, Peter ; Kronenberg, Florian ; Kutalik, Zoltan ; Bianca, Martina la; Lachance, Genevieve ; Iacono, William G. ; Lai, Sandra ; Lehtimäki, Terho ; Liewald, David C. ; Lindgren, Cecilia M. ; Liu, Yongmei ; Luben, Robert ; Lucht, Michael ; Luoto, Riitta ; Magnus, Per ; Magnusson, Patrik K.E. ; Martin, Nicholas G. ; McGue, Matt ; McQuillan, Ruth ; Medland, Sarah E. ; Meisinger, Christa ; Mellström, Dan ; Metspalu, Andres ; Traglia, Michela ; Milani, Lili ; Mitchell, Paul ; Montgomery, Grant W. ; Mook-Kanamori, Dennis ; Mutsert, Renée de; Nohr, Ellen A. ; Ohlsson, Claes ; Olsen, Jørn ; Ong, Ken K. ; Paternoster, Lavinia ; Pattie, Alison ; Penninx, Brenda W.J.H. ; Perola, Markus ; Peyser, Patricia A. ; Pirastu, Mario ; Polasek, Ozren ; Power, Chris ; Kaprio, Jaakko ; Raffel, Leslie J. ; Räikkönen, Katri ; Raitakari, Olli ; Ridker, Paul M. ; Ring, Susan M. ; Roll, Kathryn ; Rudan, Igor ; Ruggiero, Daniela ; Rujescu, Dan ; Salomaa, Veikko ; Schlessinger, David ; Schmidt, Helena ; Schmidt, Reinhold ; Schupf, Nicole ; Smit, Johannes ; Sorice, Rossella ; Spector, Tim D. ; Starr, John M. ; Stöckl, Doris ; Strauch, Konstantin ; Stumvoll, Michael ; Swertz, Morris A. ; Thorsteinsdottir, Unnur ; Thurik, A.R. ; Timpson, Nicholas J. ; Tung, Joyce Y. ; Uitterlinden, André G. ; Vaccargiu, Simona ; Viikari, Jorma ; Vitart, Veronique ; Völzke, Henry ; Vollenweider, Peter ; Vuckovic, Dragana ; Waage, Johannes ; Wagner, Gert G. ; Wang, Jie Jin ; Wareham, Nicholas J. ; Weir, David R. ; Willemsen, Gonneke ; Willeit, Johann ; Wright, Alan F. ; Zondervan, Krina T. ; Stefansson, Kari ; Krueger, Robert F. ; Lee, James J. ; Benjamin, Daniel J. ; Cesarini, David ; Koellinger, Philipp D. ; Hoed, Marcel den; Snieder, Harold ; Mills, Melinda C. - \ 2016
    Nature Genetics 48 (2016)12. - ISSN 1061-4036 - p. 1462 - 1472.
    The genetic architecture of human reproductive behavior—age at first birth (AFB) and number of children ever born (NEB)—has a strong relationship with fitness, human development, infertility and risk of neuropsychiatric disorders. However, very few genetic loci have been identified, and the underlying mechanisms of AFB and NEB are poorly understood. We report a large genome-wide association study of both sexes including 251,151 individuals for AFB and 343,072 individuals for NEB. We identified 12 independent loci that are significantly associated with AFB and/or NEB in a SNP-based genome-wide association study and 4 additional loci associated in a gene-based effort. These loci harbor genes that are likely to have a role, either directly or by affecting non-local gene expression, in human reproduction and infertility, thereby increasing understanding of these complex traits.
    Fisher-Level Decision Making to Participate in Fisheries Improvement Projects (FIPs) for Yellowfin Tuna in the Philippines
    Tolentino-Zondervan, F. ; Berentsen, P.B.M. ; Bush, S.R. ; Oude Lansink, A.G.J.M. - \ 2016
    PLoS ONE 11 (2016)10. - ISSN 1932-6203
    This study identifies the capabilities needed by small-scale fishers to participate in Fishery Improvement Projects (FIPs) for yellowfin tuna in the Philippines. The current literature provides little empirical evidence on how different models, or types of FIPs, influence the participation of fishers in their programs and the degree which FIPs are able to foster improvements in fishing practices. To address this literature gap, two different FIPs are empirically analysed, each with different approaches for fostering improvement. The first is the non-governmental organisation-led Partnership Programme Towards Sustainable Tuna, which adopts a bottom-up or development oriented FIP model. The second is the private-led Artesmar FIP, which adopts a top-down or market-oriented FIP approach. The data were obtained from 350 fishers surveyed and were analysed using two separate models run in succession, taking into consideration full, partial, and non-participation in the two FIPs. The results demonstrate that different types of capabilities are required in order to participate in different FIP models. Individual firm capabilities are more important for fishers participation in market-oriented FIPs, which use direct economic incentives to encourage improvements in fisher practices. Collective capabilities are more important for fishers to participate in development-oriented FIPs, which drive improvement by supporting fishers, fisher associations, and governments to move towards market requirements.
    Using product driven process synthesis in the biorefinery
    Kiskini, Alexandra ; Zondervan, Edwin ; Wierenga, Peter Alexander ; Poiesz, Edwin ; Gruppen, Harry - \ 2016
    Computers and Chemical Engineering 91 (2016). - ISSN 0098-1354 - p. 257 - 268.
    Biorefinery - Functionalities - Product-driven-process-synthesis - Sugar beet leaves

    The design of a biorefining process is challenging due to the high number of products that can be obtained from one feedstock, and the fact that some products can be negatively affected by processing conditions that are essential for other products. To facilitate this design, we propose the use of the product driven process synthesis methodology, with some adaptations. Four novel steps were introduced: (1) decomposition of the feedstock into its main compound classes, (2) identification of the potential uses of the compound classes found in the feedstock, based on the functionalities that they can deliver, (3) selection of the product-targets by evaluating their economic potential, and (4) identification of "critical tasks", i.e., tasks that negatively affect the quantity and/or quality of each product during their separation. To illustrate how this new approach can be used in practice, a case study of a sugar beet leaves biorefinery is presented.

    Voeding blog
    Dagevos, H. ; Doets, E.L. ; Groot, C.P.G.M. de; Kremer, S. ; Rest, O. van de; Ruben, R. ; Tieland, C.A.B. ; Zondervan, C. - \ 2015
    Wageningen : Wageningen UR
    voeding en gezondheid - voedselveiligheid - voedselzekerheid - voedsel - voeding - internet - telecommunicatie - nutrition and health - food safety - food security - food - nutrition - internet - telecommunications
    Voeding en voedsel spelen binnen Wageningen UR een centrale rol. In 2040 hebben we 9 miljard mensen te voeden met een veranderende voedselvraag. Hoe moeten we iedereen van gezond voedsel voorzien, zonder schade aan te richten aan het milieu? Voeding bepaalt voor een grote mate onze gezondheid. Het gaat daarbij om veilige voeding, maar ook afgestemd op de behoefte. Wageningse onderzoekers bloggen over het onderzoek naar beide onderwerpen en werkt daarmee aan een betere kwaliteit van leven. Dit blog is een initiatief van Wageningen University and Research Centre. Wageningen UR is het samenwerkingsverband tussen Wageningen University en Stichting DLO. Op dit platform delen onze medewerkers verhalen en kennis over hun werkveld en nodigen u uit om hierover mee te denken.
    Gezond en veilig voedsel kennisbasis voor toekomst
    Zondervan, C. ; Geest, A.H.M. van der - \ 2015
    Wageningen UR
    Als twee instituten van naam en faam de handen ineenslaan : gezamenlijke innovaties op het gebied van gezonde voeding en biobased
    Binnendijk, D. ; Bino, R.J. ; Zondervan, C. - \ 2015
    TNOTIME 3 (2015)najaar. - p. 6 - 9.
    Using product driven process synthesis in the biorefinery
    Kiskini, A. ; Zondervan, E. ; Wierenga, P.A. ; Poiesz, E. ; Gruppen, H. - \ 2015
    In: 12th International Symposium on Process Systems Engineering and 25th European Symposium on Computer Aided Process Engineering. - Elsevier (Computer Aided Chemical Engineering ) - ISBN 9780444635785 - p. 1253 - 1258.
    In this work, we propose the use of the product-driven process synthesis (PDPS) methodology for the product and process design stage in biorefinery. The aim of the biorefinery is to optimize the total use of the whole feedstock – with focus being on various products simultaneously – rather than to maximize the extraction yield of one single product. The challenge is therefore two-fold; first to identify the main compounds of interest, i.e. the products of the biorefinery, and second to design a process scheme that will allow for an optimal quantity and quality of the identified compounds. To illustrate how PDPS can be used in biorefinery a case study based on sugar beet leaves is described. The identification of the main compounds of interest is based on the functionalities that they can deliver in the final applications, rather than on their quantities in the feedstock. To design the process scheme for the extraction of the selected compounds, task networks, currently used for the extraction of the individual compounds of interest, are used after adaptations. These adaptations are done on the basis of the qualitative and/or quantitative changes that certain tasks – used for the extraction of one compound – may cause on another compound of interest. By using the sugar beet leaves biorefinery case, we show that the PDPS methodology can be a useful tool for structured decision making during the product and process design stage in biorefinery.
    A process synthesis approach for isolation of isoflavones from okara
    Jankowiak, L. ; Mendez Sevillano, D. ; Boom, R.M. ; Ottens, M. ; Zondervan, E. ; Goot, A.J. van der - \ 2015
    Industrial & Engineering Chemistry Research 54 (2015)2. - ISSN 0888-5885 - p. 691 - 699.
    driven process synthesis - antioxidant activity - food - adsorption - extraction - separation - products - recovery - integration - components
    Owing to the complexity of food matrices, process synthesis methodologies have not been as widely applied in the food industry as in the chemical industry. Here, we describe the application of a process synthesis methodology to design a system to separate valuable components from a byproduct of the soymilk production. The method yielded a number of potential processing pathways and relevant mechanistic questions, which required experimental input. The combination of considering the overall system on the level of general transformations, heuristics, and additional insights through experiments resulted in a simplified conceptual process design for the separation of isoflavones from okara with a globally more sustainable choice. The holistic approach within process design as an implication of the methodology is discussed.
    Wie zit er op mijn ei te wachten?
    Zondervan, Charon - \ 2015
    Cooperation in Europe to enhance technology transfer
    Matser, A.M. ; Zondervan, C. ; Seleljova, A. ; Boulier, F. ; Holz, E. - \ 2013
    New Food 15 (2013)1. - ISSN 1461-4642 - p. 63 - 66.
    Voeding, gezondheid en welzijn: Kansen voor Agri : een deskstudie voor NoordHolland Noord
    Wolf, P.L. de; Schoutsen, M.A. ; Spruijt, J. ; Zondervan, C. - \ 2013
    Lelystad : PPO AGV - 24
    welzijn - volksgezondheid - voeding - voeding en gezondheid - gezondheidsvoedsel - landbouwsector - landbouwindustrie - well-being - public health - nutrition - nutrition and health - health foods - agricultural sector - agribusiness
    In het topsectorenbeleid van het ministerie van EZ wordt verondersteld dat innovaties plaatsvinden op het snijvlak van thema’s en sectoren, de zogenaamde cross-overs. Dezelfde gedachte leeft in Noord-Holland Noord: op het snijvlak van de vier economisch belangrijke sectoren agribusiness, energie, health en leisure liggen wellicht kansen voor innovatie. In de Kennis- en Innovatieagenda van het project Agrivizier blijkt ook dat deze zoektocht gefaciliteerd zou moeten worden met een verkennende studie. Deze studie zou voor de agribusiness inzicht op moeten leveren in ‘de andere wereld’, maar ook in een kader om te beoordelen waar de kansen zitten en waar niet. Dit document is een eerste schets van het brede veld van agri, voeding/gezondheid en welzijn, waarin de Noord-Hollandse situatie in het kader van de landelijke trends wordt geschetst. Vervolgens worden de sterktes, zwaktes, kansen en bedreigingen samengevat en worden enkele aanbevelingen meegegeven, om de volgende stap richting innovatie te kunnen vormgeven. De verkenning is geschreven vanuit het perspectief van de Agribusiness in Noord-Holland Noord: de ondernemer die zich afvraagt ‘wat speelt er in de wereld van voeding en gezondheid en biedt dat kansen voor mij?’ Deze vraag kan ook verbreed worden naar een hele sector of zelfs naar de Agriboard. Het is dus niet de bedoeling geweest om uitvoerig in te gaan op de ontwikkelingen in de Agribusiness zelf, in de veronderstelling dat dit bekend is bij de doelgroep.
    Science-based business creation: innovating in the Food Valley
    Zondervan, Charon - \ 2013
    Collaboration between the natural, social and human sciences in Global Change Research
    Holm, P. ; Goodsite, M.E. ; Cloetingh, S.A.P.L. ; Agnoletti, M. ; Moldan, B. ; Lang, D.J. ; Leemans, R. ; Moeller, J.O. ; Zondervan, R. - \ 2013
    Environmental Science & Policy 28 (2013). - ISSN 1462-9011 - p. 25 - 35.
    sustainability - history
    In nearly all domains of Global Change Research (GCR), the role of humans is a key factor as a driving force, a subject of impacts, or an agent in mitigating impacts and adapting to change. While advances have been made in the conceptualisation and practice of interdisciplinary Global Change Research in fields such as climate change and sustainability, approaches have tended to frame interdisciplinarity as actor-led, rather than understanding that complex problems which cut across disciplines may require new epistemological frameworks and methodological practices that exceed any one discipline.GCR studies must involve from their outset the social, human, natural and technical sciences in creating the spaces of interdisciplinarity, its terms of reference and forms of articulation. We propose a framework for funding excellence in interdisciplinary studies, named the Radically Inter- and Trans-disciplinary Environments (RITE) framework. RITE includes the need for a realignment of funding strategies to ensure that national and international research bodies and programmes road-map their respective strengths and identified areas for radical interdisciplinary research; then ensure that these areas can and are appropriately funded and staffed by talented individuals who want to apply their creative scientific talents to broader issues than their own field in the long term, rather than on limited scope (5 year and less) research projects. While our references are mostly to Europe, recommendations may be applicable elsewhere.
    Slimmigheidjes om overconsumptie tegen te gaan : portionering van voedingsmiddelen
    Zondervan, Charon - \ 2012
    food consumption - portion size - nutrition and health - food packaging - consumer behaviour - food wastage
    Langer vol door vezels, niet slanker
    Zondervan, C. - \ 2012
    Kennis Online 9 (2012)december. - p. 14 - 15.
    eetlust - verzadigdheid - vezelrijke diëten - voeding en gezondheid - voedselconsumptie - overgewicht - obesitas - appetite - satiety - high fiber diets - nutrition and health - food consumption - overweight - obesity
    Mensen die veel vezels eten voelen zich langer verzadigd. Toch lijken vezels geen geschikt wapen in de strijd tegen obesitas. Een vezelrijke maaltijd zorgt er niet voor dat mensen minder snacken.
    Fresh, food & chains
    Timmermans, A.J.M. ; Zondervan, C. - \ 2012
    Food & Biobased Research
    Transforming governance and institutions for global sustainability: key insights from the Earth System Governance Project
    Biermann, F. ; Abbott, K. ; Andresen, S. ; Bäckstrand, K. ; Bernstein, S. ; Betsill, M.M. ; Bulkeley, H. ; Cashore, B. ; Clapp, J. ; Folke, C. ; Gupta, A. ; Gupta, J. ; Haas, P.M. ; Jordan, A. ; Kanie, N. ; Kluvánková-Oravská, T. ; Lebel, L. ; Liverman, D. ; Meadowcroft, J. ; Mitchell, R.B. ; Newell, P. ; Oberthür, S. ; Olsson, L. ; Pattberg, P. ; Sánchez-Rodriguez, R. ; Schroeder, H. ; Underdal, A. ; Camargo Vieira, S. ; Vogel, C. ; Young, O.R. ; Brock, A. ; Zondervan, R. - \ 2012
    Current Opinion in Environmental Sustainability 4 (2012)1. - ISSN 1877-3435 - p. 51 - 60.
    social-ecological systems - environmental governance - climate-change - information disclosure - adaptive governance - regime complex - world - decentralization - accountability - transparency
    The current institutional framework for sustainable development is by far not strong enough to bring about the swift transformative progress that is needed. This article contends that incrementalism—the main approach since the 1972 Stockholm Conference—will not suffice to bring about societal change at the level and speed needed to mitigate and adapt to earth system transformation. Instead, the article argues that transformative structural change in global governance is needed, and that the 2012 United Nations Conference on Sustainable Development in Rio de Janeiro must turn into a major stepping stone for a much stronger institutional framework for sustainable development. The article details core areas where urgent action is required. The article is based on an extensive social science assessment conducted by 32 members of the lead faculty, scientific steering committee, and other affiliates of the Earth System Governance Project. This Project is a ten-year research initiative under the auspices of the International Human Dimensions Programme on Global Environmental Change (IHDP), which is sponsored by the International Council for Science (ICSU), the International Social Science Council (ISSC), and the United Nations University (UNU)
    Navigating the Anthropocene: Improving Earth System Governance
    Biermann, F. ; Abbott, K. ; Andresen, S. ; Bäckstrand, K. ; Bernstein, S. ; Betsill, M.M. ; Bulkeley, H. ; Cashore, B. ; Clapp, J. ; Folke, C. ; Gupta, A. ; Gupta, J. ; Haas, P.M. ; Jordan, A. ; Kanie, N. ; Kluvánková-Oravská, T. ; Lebel, L. ; Liverman, D. ; Meadowcroft, J. ; Mitchell, R.B. ; Newell, P. ; Oberthür, S. ; Olsson, L. ; Pattberg, P. ; Sánchez-Rodriguez, R. ; Schroeder, H. ; Underdal, A. ; Camargo Vieira, S. ; Vogel, C. ; Young, O.R. ; Brock, A. ; Zondervan, R. - \ 2012
    Science 335 (2012)6074. - ISSN 0036-8075 - p. 1306 - 1307.
    Science assessments indicate that human activities are moving several of Earth's sub-systems outside the range of natural variability typical for the previous 500,000 years (1, 2). Human societies must now change course and steer away from critical tipping points in the Earth system that might lead to rapid and irreversible change (3). This requires fundamental reorientation and restructuring of national and international institutions toward more effective Earth system governance and planetary stewardship
    Kennisbasisthema 5. Gezond en veilig voedsel in ketenperspectief
    Geest, L. van der; Zondervan, C. - \ 2012
    In: Jaarrapportage Kennisbasisonderzoek 2011 [S.l.] : S.n. - p. 69 - 82.
    Successful development of satiety enhancing food products: towards a multidisciplinary agenda of research challenges
    Kleef, E. van; Trijp, J.C.M. van; Borne, J.J.G.C. van den; Zondervan, C. - \ 2012
    Critical Reviews in Food Science and Nutrition 52 (2012)7. - ISSN 1040-8398 - p. 611 - 628.
    sensory-specific satiety - glucagon-like peptide-1 - energy-intake - portion size - functional foods - dietary fiber - weight management - low-fat - consumption volume - metabolic syndrome
    In the context of increasing prevalence of overweight and obesity in societies worldwide, enhancing the satiating capacity of foods may help people control their energy intake and weight. This requires an integrated approach between various food related disciplines. By structuring this approach around the new product development process, this paper aims to present the contours of such an integrative approach by going through the current state of the art around satiety enhancing foods. It portrays actual food choice as the end result of a complex interaction between internal satiety signals, other food benefits and environmental cues. Three interrelated routes to satiating enhancement are (1) change food composition to develop stronger physiological satiation and satiety signals, (2) anticipate and build on smart external stimuli at moment of purchase and consumption, and (3) improve palatability and acceptance of satiety enhanced foods. Key research challenges in achieving those routes in the field of nutrition, food technology, consumer, marketing and communication are outlined
    Drie parels : topsector Agro & Food
    Zondervan, Charon - \ 2011
    Food, nutrition & behaviour : research for healthy eating, healthy living
    Beesems, J. ; Domingus, S. ; Nieuwenhuizen, J. van de; Veer, P. van 't; Zondervan, C. - \ 2011
    Wageningen : Wageningen UR - ISBN 9789461730732 - 84
    voeding - voeding en gezondheid - voedingsgewoonten - voedselconsumptie - volksgezondheid - voedselwetenschappen - nutrition - nutrition and health - feeding habits - food consumption - public health - food sciences
    This brochure illustrates this range of research activities in the domain of food and nutrition, lifestyle and health. It does so by providing examples of collaboration of Wageningen UR with partners in the public and private sector.
    Van verse appels tot biopolymeren : contract-research Food & Biobased Research houdt open dag
    Zondervan, Charon ; Matser, Ariette - \ 2010
    biomass - food technology - biobased economy - biofuels
    Dissemination platform Satiety & Satisfaction
    Zondervan, C. ; Veer, P. van 't - \ 2010
    Voedselonderzoek in Europees perspectief
    Zondervan, Charon - \ 2010
    nutrition research - behaviour - food consumption - nutrition and health
    Voeding : naar een vol gevoel : nooit meer honger, nooit meer dik
    Zondervan, Charon ; Amerongen, Aart van - \ 2010
    Satiety & Satisfaction : scientific evidence for food products that satisfy and satiate
    Zondervan, C. ; Veer, P. van 't - \ 2009
    Wageningen UR
    verzadigdheid - voedselsamenstelling - voedselonderzoek - voedselwetenschappen - voeding en gezondheid - satiety - food composition - food research - food sciences - nutrition and health
    Information about the R & D programme at Wageningen UR, that focuses on satiety and satisfaction. Globesity can be conquered by making interventions in food composition, producing functional foods, starting dietary programs and educating consumers.
    Verzadiging in relatie tot obesitas
    Zondervan, Charon - \ 2009
    Interventies in het aanbod van voedsel : aangrijpingspunten voor overheidsbeleid om het aanbod van gezonde voedselproducten structureel te verbeteren
    Zondervan, C. ; Aramyan, L.H. ; Bakker, H.C.M. de; Feskens, E.J.M. ; Gilissen, L.J.W.J. ; Jansman, A.J.M. ; Knol, J.J. ; Koops, A.J. ; Meer, I.M. van der; Nap, J.P.H. ; Mul, A. de; Sluis, A.A. van der; Temme, E.H.M. ; Uijl, W. ; Wijk, R.A. de - \ 2009
    Wageningen : Agrotechnology & Food Sciences Group (Rapport / Agrotechnology and Food Innovations nr. 1039)
    voedselconsumptie - eetpatronen - consumentengedrag - gezondheidsbevordering - voedingsbeleid - gedragsveranderingen - overheidsbeleid - voeding en gezondheid - food consumption - eating patterns - consumer behaviour - health promotion - nutrition policy - behavioural changes - government policy - nutrition and health
    In opdracht van de ministeries van LNV en VWS geeft dit rapport een aantal aanbod- en productgeoriënteerde interventies die door overheden toegepast kunnen worden om Nederlandse consumenten te verleiden tot gezonder eet- en leefgedrag. Achterliggend doel is om met kwalitatief beter voedsel en een beter consumptiepatroon een bijdrage te leveren aan de algemene gezondheidstoestand
    Overgewicht is een maatschappelijk fenomeen en geen ziekte
    Zondervan, C. - \ 2008
    Food Insights 2008 (2008)1. - ISSN 1570-9876
    Mild conserveren maakt groente uit flesje gezonder
    Zondervan, C. - \ 2008
    Kennis Online 5 (2008)dec. - p. 3 - 3.
    gemaksvoedsel - gezondheidsvoedsel - voedingswaarde - vruchtensappen - vruchtendranken - conservering - voeding en gezondheid - convenience foods - health foods - nutritive value - fruit juices - fruit drinks - conservation - nutrition and health
    "Ik steek veel energie in het de groenten- en fruitsector duidelijk maken dat het heel belangrijk is om het gebruiksgemak voor de consument te vergroten", zegt Charon Zondervan van de Agrotechnology and Food Sciences Group (AFSG). "Steeds minder mensen nemen nog de tijd om een sinaasappel te schillen. Liever nemen ze een product als Knorr Vie. En de boodschap komt over. Nu wordt het tijd dat er producten komen met net zoveel voedingswaarde als echt fruit en groenten"
    Wageningen UR research portfolio on Food & Nutrition
    Zondervan, C. - \ 2008
    Bioactieve stoffen in groente en fruit
    Zondervan, Charon - \ 2007
    Heat-Generated Food Toxicants; Identification, Characterisation and Risk Minimisation
    Skog, K.I. ; Murkovic, M. ; Mottram, D. ; Boekel, T. van; Zondervan, C. ; Klaveren, J.D. van - \ 2007
    National Veterinary Institute, Norway
    voedselveiligheid - risicovermindering - eten koken - warmtebehandeling - food safety - risk reduction - cooking - heat treatment
    Main results of the HEATOX Project. The main objectives were to: estimate health risks that may be associated with hazardous compounds in heat-treated food and: find cooking/processing methods which minimise the amounts of these compounds, thereby providing safe, nutritious and high-quality food-stuffs
    Influence of Processing on Antioxidation Activity of Flavonoids Present in Onion (Allium Cepa)
    Zondervan, C. ; Wegh, R.J. - \ 2007
    International Journal of Food Science, Technology and Nutrition 1 (2007)1. - ISSN 0973-841X - p. 87 - 94.
    Spin polarization induced by optical and microwave resonance radiation in a Si Vacancy in SiC: a promising subject for the spectroscopy of single defects
    Baranov, P.G. ; Bundakova, A.P. ; Borovykh, I.V. ; Orlinskii, S.B. ; Zondervan, R. ; Schmidt, J. - \ 2007
    JETP Letters 86 (2007)3. - ISSN 0021-3640 - p. 202 - 206.
    silicon vacancy - ground-state - 6h - 4h
    Depending on the temperature, crystal polytype, and crystal position, two opposite schemes have been observed for the optical alignment of the populations of spin sublevels in the ground state of a Si vacancy in SiC upon irradiation with unpolarized light at frequencies of zero-phonon lines. A giant change by a factor of 2¿3 has been found in the luminescence intensity of zero-phonon lines in zero magnetic field upon absorption of microwave radiation with energy equal to the fine-structure splitting of spin sublevels of the vacancy ground state, which opens up possibilities for magnetic resonance detection at a single vacancy.
    Blancheren frites goed begin : reductie acrylamide [thema : omgaan met risico's]
    Zondervan, C. ; Mul, A. de - \ 2007
    Voedingsmiddelentechnologie 40 (2007)7. - ISSN 0042-7934 - p. 15 - 16.
    frituren - voedingsmiddelen - aardappelproducten - acrylamiden - toxische stoffen - maillard-reactie - simulatiemodellen - kookmethoden - deep fat frying - foods - potato products - acrylamides - toxic substances - maillard reaction - simulation models - cooking methods
    Acrylamide helemaal uitbannen gaat niet. De Maillard-reactie waarbij deze genotoxische stof zich vormt, is immers ook verantwoordelijk voor het lekkere bruine korstje op verhitte voedingsproducten. In het kader van het Europese Heatox-project onderzocht AFSG hoe acrylamide in door de consument afgebakken diepvriesfrites valt te reduceren. Blancheren is daarbij een eerste goede stap. Ook werd een simulatiemodel ontwikkeld waarmee acrylamidegehaltes in frites kunnen worden bepaald
    Gezonde voeding in perspectief: trendwatchverslag kennisbasisthema 'Plant en dier voor de gezonde mens'
    Zondervan, C. ; Dagevos, H. ; Keijer, J. - \ 2006
    Wageningen : AFSG Food Quality
    Wetenschapper met oplossing zoekt bedrijf met probleem
    Zondervan, C. - \ 2005
    In: Vliegwiel naar duurzaamheid : Innovatieve Acties Programma 2003-2004 Arnhem : Provincie Gelderland - p. 60 - 61.
    Mild separation technology for food and biotech
    Zondervan, Charon - \ 2005
    Mild separation technology : opportunities for the recovery of natural ingredients
    Merck, K.B. ; Willemsen, J.H.A. ; Dijkink, B.H. ; Togtema, K.A. ; Gerritsen, Y.A.M. ; Zondervan, C. - \ 2005
    In: Recent research developments in agricultural and food chemistry : vol. 6 / Pandalai, S.G., Trivandrum : Research Signpost - ISBN 9788130800455 - p. 17 - 26.
    Nieuwe EU-richtlijn voor aanplant van bos en landschappelijke beplantingen
    Grimberg, G. ; Zondervan, J. ; Vries, S.M.G. de - \ 2004
    Vakblad Natuur Bos Landschap 1 (2004)7. - ISSN 1572-7610 - p. 14 - 15.
    houtachtige planten als sierplanten - bosbomen - plantmateriaal - rassen (planten) - eu regelingen - ornamental woody plants - forest trees - planting stock - varieties - eu regulations
    De EU richtlijn voor bosbouwkundig teeltmateriaal is bedoled als bijdrage aan de instandhouding en vergroting van de biologische diversiteit van de bossen. Dit artikel geeft aan, welke boomsoorten toegevoegd zijn aan de vernieuwde EU richtlijn (1999/105/EG)
    Long-term effects of timber harvesting in Mapane - North Suriname
    Steege, H. ter; Laumans, B. ; Laumans-Bus, D. ; Bongers, F.J.J.M. ; Zondervan, G. - \ 2003
    In: Long-term changes in tropical tree diversity: studies from the Guiana Shield, Africa, Borneo and Melanesia Wageningen : Tropenbos International (Tropenbos series 22) - ISBN 9789051130652 - p. 79 - 94.
    Monte Carlo simulation of the alpha-amylolysis of amylopectin potato starch. Part 1: Modeling of the structure of amylopectin
    Marchal, L.M. ; Zondervan, J. ; Bergsma, J. ; Beeftink, H.H. ; Tramper, J. - \ 2001
    Bioprocess and Biosystems Engineering 24 (2001). - ISSN 1615-7591 - p. 163 - 170.
    A fast In Vitro method to screen for antioxidant activity of functional components in foodstuff
    Marin-Vinader, L. ; Wichers, H.J. ; Zondervan, C. ; Boeriu, C. ; Soler-Rivas, C. - \ 2000
    In: European Conference on Nutritional Enhancement of Plant Foods, 6-9 September, at Norwich (United Kingdom)
    Mogelijkheden voor isolatie van fyto-oestrogenen
    Swallow, K. ; Langelaan, B. ; Zondervan, C. ; Jonge, H.D. ; Wichers, H. ; Soler Rivas, C. - \ 2000
    Voedingsmiddelentechnologie 33 (2000)24. - ISSN 0042-7934 - p. 11 - 13.
    geslachtshormonen - oestrogenen - plantenoestrogenen - steroïdhormonen - diethylstilbestrol - voedselhygiëne - voedingsmiddelen - ziektepreventie - voedselindustrie - voedseltechnologie - agro-industriële sector - sex hormones - oestrogens - plant oestrogens - steroid hormones - diethylstilbestrol - food hygiene - foods - disease prevention - food industry - food technology - agroindustrial sector
    Samenwerking tussen het Food Processing Development Centre in Leduc (Canada) en het Agrotechnologisch Onderzoeksinstituut ATO in Wageningen leidde tot de ontwikkeling van een snelle detectiemethode voor bepaling van fyto-oestrogenen in planten. Deze spelen een belangrijke rol in onze gezondheid en bij het voorkomen van ziekten
    Controlling Maillard reactions in the heating process of blockmilk using an electronic nose
    Zondervan, C. ; Muresan, S. ; Jonge, H.G. de; Thoden van Velzen, E.U. ; Wilkinson, E.C. ; Nijhuis, H.H. ; Leguijt, T. - \ 1999
    Journal of Agricultural and Food Chemistry 47 (1999)11. - ISSN 0021-8561 - p. 4746 - 4749.
    Poreuze polymeren scheiden selectiver
    Zondervan, C. - \ 1999
    Voedingsmiddelentechnologie 32 (1999)14/15. - ISSN 0042-7934 - p. 31 - 32.
    polymeren - organische verbindingen - distillatie - zuiveren - voedselindustrie - voedseltechnologie - verwerking - polymers - organic compounds - distillation - purification - food industry - food technology - processing
    MIP's (molecular imprinted polymers) zijn polymeren die als scheidingsmedium worden gebruikt voor de voedingsindustrie. Ze bieden duidelijke voordelen ten opzichte van conventionele technieken. In een tabel zijn toepassingen weergegeven
    Monte Carlo simulation of the alpha-amylolysis of amylopectin potato starch.
    Marcal, L.M. ; Ulijn, R.V. ; Zondervan, J. ; Bergsma, J. ; Gooijer, C.D. de; Tramper, J. - \ 1998
    In: Proceedings of the 2nd European Symposium on Biochemical Engineering Science. S. Feyo de Azevedo (ed.) - p. 351 - 351.
    Selective catalytic oxidation of benzyl alcohols to benzaldehydes with a dinuclear manganese(IV) complex
    Zondervan, C. ; Hage, R. ; Feringa, B.L. - \ 1997
    Chemical Communications (1997). - ISSN 1359-7345 - p. 419 - 420.
    Efficient synthesis and molecular structure of 2-hydroxyisophthaldehyde
    Zondervan, C. ; Beuken, E.K. van den; Kooijman, H. ; Spek, A.L. ; Feringa, B.L. - \ 1997
    Tetrahedron Letters 53 (1997). - ISSN 0040-4039 - p. 3111 - 3114.
    Homogeneous catalytic oxidation: a ligand approach
    Zondervan, C. - \ 1997
    University of Groningen. -
    Ontwikkeling van een biotoets voor het Noordelijk wortelknobbelaaltje (Meloidogyne hapla)
    Zondervan, A.A.W. - \ 1987
    Lelystad : PAGV (Verslag / Proefstation voor de Akkerbouw en de Groenteteelt in de Vollegrond nr. 70) - 34
    heteroderidae - indicatorplanten - nederland - plantenplagen - pratylenchus - grondanalyse - bodembiologie - bodemfauna - bodemflora - tylenchidae - heteroderidae - indicator plants - netherlands - plant pests - pratylenchus - soil analysis - soil biology - soil fauna - soil flora - tylenchidae
    Beschrijving van onderzoek naar de optimalisatie en standaardisatie van een biotoets voor M. hapla met goudsbloem (Calendula officinalis). Daarnaast worden biologische kenmerken van dit aaltje, de gewijzigde toetsmethodiek (toetsmedium sla) en de m.b.v. de proefresutaten opgestelde indeling in besmettingsklassen behandeld, evenals aanbevelingen voor toekomstig onderzoek met betrekking tot schade door M. hapla in de akkerbouw
    The effect of a natural high-fiber diet on serum lipids, fecal lipids, and colonic function
    Stasse-Wolthuis, M. ; Hautvast, J.G.A.J. ; Hermus, R.J.J. ; Katan, M.B. ; Bausch, J.E. ; Rietberg-Brussaard, J.H. ; Velema, J.P. ; Zondervan, J.H. ; Eastwood, M.A. ; Gordon Brydon, W. - \ 1979
    American Journal of Clinical Nutrition 32 (1979)9. - ISSN 0002-9165 - p. 1881 - 1888.
    Invloed van voedingsvezel op cholesterolstofwisseling en darmpassagetijd bij gezonde vrijwilligers
    Brussaard-Rietberg, T. ; Zondervan, J. ; Bausch, J.E. ; Velema, J. ; Stasse-Wolthuis, M. - \ 1978
    Unknown Publisher
    Modelling urban run-off : a quasilinear approach
    Zondervan, J.G. - \ 1978
    Landbouwhogeschool Wageningen. Promotor(en): D.A. Kraijenhoff van de Leur. - Wageningen : Pudoc - ISBN 9789022006658 - 68
    afvoer - hydrologie - stroomgebieden - drainage - rivieren - stedelijke gebieden - water - modellen - analogen - geografie - nederzetting - onderzoek - nederland - veluwe - gelderland - discharge - hydrology - watersheds - drainage - rivers - urban areas - water - models - analogues - geography - settlement - research - netherlands - veluwe - gelderland

    The non-linear behaviour of catchments, as ascertained by various investigators, is discussed. Blackbox analysis with Laguerre functions shows non-linear behaviour for a small urban catchment area. Some approaches to non-linear systems for rainfall and run-off are considered. Two quasilinear methods are compared with a theoretical model for their application. Results from an application of the most promising method on an urban catchment area confirm the feasibility of this method. Six conceptual models are compared and an application of the quasilinear method is given with a conceptual model. A satisfactory treatment of losses forms a major problem in modelling urban rainfall and run-off. Hence a chapter is devoted to transformation of rainfall into sewer inflow and concurrent losses. The use of critical sequences of rainfall for modelling is discussed. Evidence suggesting the maximum time interval between samples is given.

    Calculation of instantaneous unit hydrographs in an urban area
    Kloet, P. van der; Wal, M. van der; Zondervan, J.G. - \ 1977
    In: UNESCO Symposium on the Effects of Urbanization and Industrialization on the Hydrologic Regime and Water Quality, IAHS publication 123 - p. 124 - 144.
    De toevoer van regenwater naar een straatkolk
    Dommerholt, A. ; Zondervan, J.G. - \ 1977
    H2O : tijdschrift voor watervoorziening en afvalwaterbehandeling 10 (1977). - ISSN 0166-8439 - p. 204 - 207.
    Omvorming van neerslag tot rioolinvoer bij enkele typen verhardingen
    Zondervan, J.G. ; Dommerholt, A. - \ 1976
    Wageningen : LH (Nota / Landbouwhogeschool. Laboratorium voor hydraulica en afvoerhydrologie 38) - 24
    neerslag - oppervlakkige afvoer - riolering - stedelijke gebieden - precipitation - runoff - sewerage - urban areas
    Omvorming van neerslag tot rioolinvoer bij een bepaald type "inlet area"
    Zondervan, J.G. ; Dommerholt, A. - \ 1975
    Wageningen : LH (Nota / Laboratorium voor Hydraulica . Landbouwhogeschool 33) - 28
    neerslag - daken - afvoer - gebouwen - oppervlakkige afvoer - stedelijke terreinen - riolering - precipitation - roofs - discharge - buildings - runoff - urban sites - sewerage
    De mogelijkheid tot het uitvoeren van een reeks beregeningsproeven op het dak van het eigen gebouw werd begin 1974 geopperd door prof. Kraijenhoff van de Leur. Vervolgens is na enige voorbereiding in de tweede helft van 1974 door de schrijvers een reeks beregeningsproeven uitgevoerd op een deel van het dak van de hydraulica hal van de afdeling Hydraulica en Afvoerhydrologie. Doel van de experimenten was de transformatie van neerslag tot rioolinvoer door een bepaald type "inlet area" bij verschillende neerslagintensiteiten te onderzoeken en met een rekenmodel te beschrijven. Onder een
    Groei en mortaliteit der waardehoutsoorten in geexploiteerd en natuurlijk verjongd drooglandbos : opname en verwerking 1971 : rapportering over het verloop der werkzaamheden
    Zondervan, G.J. - \ 1972
    (Paramaribo) : [s.n.] (Celos rapporten no. 61) - 40
    milieufactoren - bosbouw - bosbouwkundige handelingen - groei - natuurlijke verjonging - houtteelt - suriname - environmental factors - forestry - forestry practices - growth - natural regeneration - silviculture - suriname
    Methodenstudies van de houtoogst in Dunningen van Pinus caribaea : een tijdstudie met vellingsgereedschap
    Zondervan, G.J. - \ 1972
    Paramaribo : [s.n.] (Celos rapporten no. 66) - 28
    bijlen - velling - bosbouw - handzagen - primaire bewerking - bomen - werkplanning - pinus caribaea - axes - felling - forestry - hand saws - primary conversion - trees - work planning - pinus caribaea
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