Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    '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.

    We have a manual that explains all the features 

    Current refinement(s):

    Records 1 - 20 / 48

    • help
    • print

      Print search results

    • export

      Export search results

    Check title to add to marked list
    The risks of drinking sugar sweetened drinks | WURcast
    Kampman, E. - \ 2019
    Wageningen : WURcast
    sugar - health - diseases - blood sugar - carbohydrates - soft drinks
    The consumption of sugar-sweetened drinks increases rapidly. What is the danger of these drinks? This lesson is part of the WageningenX MOOC called 'Nutrition and Cancer'.
    The TeRiFiQ project : Combining technologies to achieve significant binary reductions in sodium, fat and sugar content in everyday foods whilst optimising their nutritional quality
    Salles, C. ; Kerjean, J.R. ; Veiseth-Kent, E. ; Stieger, M. ; Wilde, P. ; Cotillon, C. - \ 2017
    Nutrition Bulletin 42 (2017)4. - ISSN 1471-9827 - p. 361 - 368.
    consumer - fat - food - perception - sodium - sugar
    Most developed countries are confronted with rising rates of diseases related to unhealthy eating habits, particularly the excessive consumption of salt, saturated fat and free sugars. However, fat, sugars and salt in food influence not only its nutritional qualities but also its sensory properties, safety (e.g. shelf life) and affordability. The main challenge is to formulate healthier foods that are acceptable to consumers. In this context, the overall objective of TeRiFiQ was to achieve significant binary reductions in the salt-fat and sugar-fat contents of frequently consumed food products around Europe, while, at the same time, ensuring the products’ nutritional and sensorial qualities, safety and affordability for both industry and consumers was not compromised. TeRiFiQ addressed four major food categories: cheeses, processed meat, bakery and sauce products. Different strategies adapted to each food category were used to reduce the target ingredients. Significant reductions in the salt-fat and fat-sugar contents of a number of cheese, processed meat, bakery and sauce products were achieved, and these changes were found to be acceptable to consumers. The most promising reformulated food products were developed at the industrial scale.
    Ecophysiology of novel intestinal butyrate-producing bacteria
    Bui, Thi Phuong Nam - \ 2016
    Wageningen University. Promotor(en): Willem de Vos, co-promotor(en): Caroline Plugge. - Wageningen : Wageningen University - ISBN 9789462577015 - 202
    butyrates - butyric acid bacteria - intestines - microbial interactions - faecal examination - mice - man - infants - genomics - intestinal physiology - microbial physiology - biochemical pathways - lysine - sugar - butyraten - boterzuurbacteriën - darmen - microbiële interacties - fecesonderzoek - muizen - mens - zuigelingen - genomica - darmfysiologie - microbiële fysiologie - biochemische omzettingen - lysine - suiker

    The human intestinal tract harbours a trillion on microbial cells, predominantly anaerobes. The activity and physiology of these anaerobes is strongly associated with health and disease. This association has been investigated for a long time.However, this has not been fully understood. One of the reasons is the limited availability of cultured representatives. It is estimated that there may be more than 3000 species colonised in the gut of healthy individuals, however, only a bit over 1000 species have been isolated and characterised. Among the intestinal microbes, butyrate-producing bacteria are of special interest as the butyrate produced, is crucial to maintain a healthy gut. In addition, butyrate-producing bacteria have shown a reverse correlation with several intestinal diseases. In Chapter 2 we described a novel species Anaerostipes rhamnosivorans 1y2T isolated from an infant stool. This strain belonged to genus Anaerostipes within Clostridium cluster XIVa. A. rhamnosivorans had a capability of converting rhamnose into butyrate that is unique within intestinal butyrate-producing bacteria. The genomic analysis also revealed the entire rhamnose fermentation pathway as well as the acetyl-CoA pathway for butyrate production. This bacterium is able to produce butyrate from a wide range of sugars as well as lactate plus acetate. In Chapter 3, we described the microbial interactions between A. rhamnosivorans and Bacteriodes thetaiotaomicron in dietary pectins; Blautia hydrogenotrophica in lactate and small amount of acetate; Methanobrevibacter smithii in glucose. We observed that A. rhamnosivorans was able to benefit from its partners in all cocultures for butyrate production. This is likely due to its high metabolic flexibility. While the interaction between A. rhamnosivorans and B. thetaiotaomicron appeared as syntrophy, the interaction between A. rhamnosivorans and hydrogenotrohic microbes were cross-feeding type where hydrogen was transferred between two species. The latter resulted in an increase in butyrate level. In Chapter 4 we described a novel species Intestinimonas butyriciproducens SRB521T representing a novel genus Intestinimonas from a mouse caecum within Clostridium cluster IV. This bacterium produced butyrate and acetate as end products from Wilkins-Chalgren-Anaerobe broth.

    Butyrate production is assumed to derive from carbohydrate employing acetyl-CoA pathway. No gut bacterium is known to convert proteins or amino acids to butyrate although butyrogenic pathways from amino acid degradation have been detected in the human gut using metagenomic approach. In Chapter 5 we discovered a novel butyrate synthesis pathway from the amino acid lysine and the Amadori product fructoselysine in Intestinimonas butyriciproducens AF211 that was isolated from human stool. This strain appeared to grow much better in lysine as compared to sugars although lysine and acetyl-CoA pathways were both detected in its complete genome. Moreover, the strain AF211 was able to metabolise efficiently fructoselysine into butyrate, and acetate was found to affect the fructoselysine fermentation, representing the impact of the environmental conditions where acetate is abundant in the gut. While the lysine pathway was found in the gut of many individuals, the fructoselysine pathway was present in only half of those samples. The finding that strain I. butyriciproducens AF211 is capable of the butyrogenic conversion of amino acid lysine and fructoselysine, an Amadori product formed in heated foods via the Maillard reaction, indicated a missing link that coupling protein metabolism and butyrate formation. As this Amadori product has been implicated to play a role in aging process, the use of strain AF211 as fructoselysine clearance in the gut needs further investigation. In Chapter 6 we performed genomic and physiological comparison between the I. butyriciproducens strain AF211 (human isolate) and SRB521T (mouse isolate). I. butyriciproducens was the most abundant species within the Intestinimonas genus and highly prevalent in humans based on metadata analysis on 16S amplicons. We confirmed that the butyrogenesis from lysine was a shared characteristic between the two I. butyriciproducens strains. We also observed the host specific features including tolerance to bile, cellular fatty acid composition, more efficient capability of converting sugars into butyrate, especially galactose and arabinose, in the human strain AF211. In addition, genomic rearrangements as well as variations in bacteriophages differed among strains.

    Chemie - Van suiker naar mobiel : Kennisclip Bogo-project e-learning
    Baltissen, A.H.M.C. - \ 2016
    Groen Kennisnet
    biopolymeren - suiker - biobased economy - biochemie - chemische reacties - polymelkzuur - melkzuur - bioplastics - tuinbouw - lesmaterialen - biopolymers - sugar - biobased economy - biochemistry - chemical reactions - polylactic acid - lactic acid - bioplastics - horticulture - teaching materials
    Deze kennisclip maakt onderdeel uit van de lesmodule Biobased Economy van het CIV T&U.
    Grondstofefficiëntie in de zuivel-, varkensvlees-, aardappel- en suikerketen
    Baltussen, W.H.M. ; Dolman, M.A. ; Hoste, R. ; Janssens, S.R.M. ; Reijs, J.W. ; Smit, A.B. - \ 2016
    LEI Wageningen UR (Nota / LEI Wageningen UR 2016-013) - 85
    agro-industriële ketens - efficiëntie - duurzaamheid (sustainability) - melk - varkensvlees - aardappelen - suiker - productie - nederland - agro-industrial chains - efficiency - sustainability - milk - pigmeat - potatoes - sugar - production - netherlands
    In opdracht van het ministerie van Economische Zaken en Topsector Agri & Food heeft LEIWageningen UR de state-of-the-art in kaart gebracht op het gebied van de duurzaamheidsprestatiesvoor vier belangrijke grondstoffen van de aardappel-, suiker-, varkensvlees- en zuivelketen. De viergrondstoffen zijn: land, water, energie en fosfaat. De focus in dit rapport ligt op de kansen enuitdagingen die er zijn op het gebied van efficiënter grondstofgebruik.
    From the Sugar Platform to biofuels and biochemicals : Final report for the European Commission Directorate-General Energy
    Taylor, R. ; Nattrass, L. ; Alberts, G. ; Robson, P. ; Chudziak, C. ; Bauen, A. ; Libelli, I.M. ; Lotti, G. ; Prussi, M. ; Nistri, R. ; Chiaramonti, D. ; lópez-Contreras, A.M. ; Bos, H.L. ; Eggink, G. ; Springer, J. ; Bakker, R. ; Ree, R. van - \ 2015
    E4tech/Re-CORD/Wageningen UR - 183
    chemie op basis van biologische grondstoffen - chemicaliën uit biologische grondstoffen - gevalsanalyse - suiker - chemische industrie - europa - karteringen - biobased economy - biobased chemistry - biobased chemicals - case studies - sugar - chemical industry - europe - surveys - biobased economy
    Numerous potential pathways to biofuels and biochemicals exist via the sugar platform1. This study uses literature surveys, market data and stakeholder input to provide a comprehensive evidence base for policymakers and industry – identifying the key benefits and development needs for the sugar platform. The study created a company database for 94 sugar-based products, with some already commercial, the majority at research/pilot stage, and only a few demonstration plants crossing the “valley of death”. Case studies describe the value proposition, market outlook and EU activity for ten value chains (acrylic, adipic & succinic acids, FDCA, BDO, farnesene, isobutene, PLA, PHAs and PE). Most can deliver significant greenhouse savings and drop-in (or improved) properties, but at an added cost to fossil alternatives. Whilst significant progress has been made, research barriers remain around lignocellulosic biomass fractionation, product separation energy, biological inhibition, chemical selectivity and monomer purity, plus improving whole chain process integration. An assessment of EU competitiveness highlights strengths in R&D, but a lack of strong commercial activity, due to the US, China and Brazil having more attractive feedstock and investment conditions. Further policy development, in particular for biochemicals, will be required to realise a competitive European sugar-based bioeconomy.
    Fructose consumption in the Netherlands: the Dutch national food consumption survey 2007-2010
    Sluik, D. ; Engelen, A.I.P. ; Feskens, E.J.M. - \ 2015
    European Journal of Clinical Nutrition 69 (2015). - ISSN 0954-3007 - p. 475 - 481.
    controlled feeding trials - fatty liver-disease - soft drink consumption - multiple source method - corn syrup - intake distributions - dietary-intake - metaanalysis - obesity - sugar
    Background/objectives: Despite the worldwide scientific and media attention, the actual fructose consumption in many non-US populations is not clear. The aim of this study was to estimate the fructose consumption and its main food sources in a representative sample of the general Dutch population. Subjects/methods: In all, 3817 children and adults aged 7–69 years from the Dutch National Food Consumption Survey 2007–2010 were studied. Values for fructose content of the products were assigned using several food composition tables. Diet was assessed with two nonconsecutive 24-h dietary recalls. The Multiple Source Method was used to take into account day-to-day variation and to estimate the habitual fructose consumption. Results: Median habitual fructose intake was 46¿g/day, with an interquartile range of 35–60¿g/day. In boys, the highest median intake was observed among 14- to 18-year olds: 61¿g/day. In girls, those aged 9–13 years reported the highest median intake: 56¿g/day. Of total fructose intake, 67% was consumed in the form of sucrose and 33% was consumed as free fructose. Soft drinks constituted the main food source of total fructose (13–29% across age and sex categories), followed by juices (9–12%), fruit (9–18%), cake and cookies (9–11%) and dairy products (6–10%). Conclusions: Fructose comprised 9% of the mean daily energy intake in the general Dutch population aged 7–69 years. The fructose consumption was somewhat lower than most recent figures from the US. The main food sources of fructose were soft drinks, juices and fruit.
    Combinatory Effects of Texture and Aroma Modification on Taste Perception of Model Gels
    Knoop, J.E. ; Sala, G. ; Smit, G. ; Stieger, M.A. - \ 2013
    Chemosensory Perception 6 (2013)2. - ISSN 1936-5802 - p. 60 - 69.
    sensory perception - flavor release - solution viscosity - sugar - fat - integration - odor - hydrocolloids - enhancement - preferences
    In this study, the effects of texture modification and aroma-induced sweetness enhancement were systematically investigated in apple-flavored semi-solid Na-caseinate gels. Gels containing apple juice as a basic flavor were developed differing in stiffness, brittleness and serum release (texture modification), aroma, and sugar concentration (flavor modification). In a full factorial design (2 x 2 x 2), eight samples were evaluated by a sensory panel on ten attributes (five texture, five flavor). Sweetness was enhanced significantly by modification of texture, aroma, and sugar concentration. Texture modification was found to be by far the greatest contributor to overall sweetness. In comparison to texture modifications, aroma modification and changes of sugar concentration resulted only in small sweetness enhancement. When texture and aroma modifications are combined, a small additive effect of aroma modification on sweetness enhancement was found in addition to the sweetness enhancement caused by texture modification. This suggests that the relationship between texture (modification) and flavor (modification) and sweetness is additive in a nonlinear manner. It can be concluded that texture modification is a valid tool to enhance taste intensity. Hence, texture modification can compensate for a loss of sweet taste intensity induced by sugar reduction, while aroma-induced sweetness enhancement can contribute to further taste enhancement in order to develop healthier products.
    Sweet sorghum performance under irrigated conditions in northwest China : Biomass and its partitioning in inbred and hybrid cultivars at two nitrogen levels
    Fan, F. ; Spiertz, J.H.J. ; Han, L.P. ; Liu, Z.X. ; Xie, G.H. - \ 2013
    Research on Crops 14 (2013)2. - ISSN 0972-3226 - p. 459 - 470.
    bicolor-l. moench - water-use efficiency - ethanol-production - harvest time - raw-material - yield - sugar - growth - crop - genotypes
    Effects of cultivar choice and nitrogen supply on biomass yield and dry matter partitioning of sweet sorghum [Sorghum bicolor (L.) Moench] were studied under irrigated conditions in the arid temperate climate of north-west China. Two hybrid cultivars, Zaoshu-1 (ZS 1) and Chuntian-2 (CT 2), and two inbred cultivars, Rio and Lvneng-3 (LN 3) were grown in a field trial at two nitrogen fertilizer levels (0 and 150 kg/ha of N) in Urumchi (43°01'N, 88°37'E). Hybrid cultivars produced much higher aboveground dry biomass yields, amounting to on an average 27.2 t/ha than inbred cultivars with on an average 24.3 t/ha. Crop growth rates amounted to 30.8 g/m2/day on an average during the period from elongation to heading as well as from heading to maturity, however; the growth rates of the inbred cultivars slowed down after heading, while those of the hybrids still increased. Inbred cultivar Rio had the highest plant height (328 cm) and stem dry weight (16.5 t/ha). Average grain yield was 11.2 and 5.5 t/ha for hybrids and inbreds, respectively. Partitioning of dry matter differed between the inbred cultivars, but did not for the hybrids. Application of fertilizer nitrogen resulted in a higher plant height, stem dry biomass, dry biomass of leaves and aboveground biomass in inbred and hybrid cultivars. In conclusion, hybrid and inbred cultivars of sweet sorghum performed well in the environment of north-west China when irrigated. Biomass and grain yields of hybrids turned out to be higher than those of inbreds.
    CAP and EU Trade Policy Reform : Assessing impact on developing countries
    Meijerink, G.W. ; Achterbosch, T.J. - \ 2013
    The Hague : LEI, part of Wageningen UR (LEI report : Research area International policy ) - ISBN 9789086156320 - 109
    gemeenschappelijk landbouwbeleid - landbouwbeleid - internationale handel - europese unie - ontwikkelingslanden - import - export - markten - subsidies - economische impact - prijzen - vruchtgroenten - suiker - cap - agricultural policy - international trade - european union - developing countries - imports - exports - markets - subsidies - economic impact - prices - fruit vegetables - sugar
    Effect of spatial distribution of tastants on taste intensity, fluctuation of taste intensity and consumer preference of (semi-)solid food products
    Mosca, A.C. ; Bult, J.H.F. ; Stieger, M.A. - \ 2013
    Food Quality and Preference 28 (2013)1. - ISSN 0950-3293 - p. 182 - 187.
    pulsatile stimulation - saltiness enhancement - ice-cream - salt - sugar - pleasantness - perception - contrast - bread - fat
    Two sensory studies were carried out to compare the taste intensity, the perceived fluctuation of taste intensity and the consumer preference of food products with homogeneous and inhomogeneous distributions of tastants using 2-alternative forced choice tests. The first study evaluated pairs of gels, breads and sausages (1 homogeneous product and 1 inhomogeneous product). The second study evaluated 4 types of gel and 4 types of sausage (1 homogeneous product and 3 inhomogeneous products varying in the magnitude of tastant concentration differences). In the first study, all products with an inhomogeneous distribution of tastants were perceived sweeter or saltier than the respective homogeneous products. Tastant concentration differences were perceived as fluctuations of taste intensity in inhomogeneous gels and breads, but not in inhomogeneous sausages. Inhomogeneous gels and sausages were more preferred than the homogeneous products, whereas inhomogeneous and homogeneous breads were equally preferred. In the second study, inhomogeneous gels with large tastant concentration differences were perceived sweeter than the homogeneous gel. The taste intensity of homogeneous and inhomogeneous sausages did not differ. Tastant concentration differences induced perceivable taste intensity fluctuations in inhomogeneous gels, but not in inhomogeneous sausages. The inhomogeneous gel with the largest tastant concentration difference was more preferred than the homogeneous gel. Homogeneous and inhomogeneous sausages were equally preferred. Results suggest that the enhancement of taste that is caused by tastant concentration differences does not require the conscious perception of taste intensity fluctuations. We conclude that products in which tastants are heterogeneously distributed are equally or more preferred than products in which tastants are homogeneously distributed. Therefore, the modulation of the spatial distribution of tastants might be used as a strategy to reduce sugar and salt in food products without compromising consumer preference.
    Time to first fracture affects sweetness of gels
    Sala, G. ; Stieger, M.A. - \ 2013
    Food Hydrocolloids 30 (2013)1. - ISSN 0268-005X - p. 73 - 81.
    emulsion-filled gels - sugar - perception - fat - deformation - preferences - texture - flavor - impact - foods
    The aim of this study was to investigate the influence of the breakdown behaviour on sweetness intensity of gelled model foods. Emulsion-filled gelatine/agar gels varying mainly in fracture strain (eF) were used. The fracture strain was modified by changing either the ratio between gelatine and agar concentration or the size of the oil droplets embedded in the gel matrix. The sugar content of all gels was kept constant at 6 wt%. The fracture strain of the gels varied between eF = 37% and eF = 72%. The number of gel fragments (n) obtained after uniaxial compression of a gel specimen increased with decreasing fracture strain from n = 10 (eF = 72%) to n = 200 (eF = 37%). A quantitative descriptive analysis sensory study revealed that the sweetness intensity perceived after firstfracture of the gel in the mouth was higher for gels with lower fracture strain. The sweetness intensity of the most brittle gel (Isweet = 65; eF = 37%) was almost twice as high as the sweetness intensity of the least brittle gel (Isweet = 36; eF = 72%). In addition, the panelists determined the time after which the maximum sweetness intensity was perceived (tmax). The maximum sweetness intensity of brittle gels was perceived after tmax = 6 s (eF = 37%), whereas for less brittle gels the maximum sweetness intensity was perceived after tmax = 15 s (eF = 72%). The temporal evolution of sweetness intensity after the maximum sweetness intensity was comparable for all gels. The results suggest that the velocity of formation of new surfaces of the food in contact with the taste buds influences sweetness intensity in addition to the total surface which is generated during breakdown of the food.
    FAQ: Gezonde bijen met stevia?
    Blacquiere, T. - \ 2012
    S.n.
    honingbijen - zoekgedrag - foerageren - suiker - stevia rebaudiana - onderzoek - diervoeding - honey bees - searching behaviour - foraging - sugar - stevia rebaudiana - research - animal nutrition
    Beantwoording van de vraag of Stevia misschien kan worden aangewend als gezond voedsel voor bijen.
    Is er toekomst zonder bietenquotum? : LEI onderzoekt concurrentiekracht bietensector
    Galen, Michiel van - \ 2011
    agricultural economics - quotas - sugarbeet - markets - sugar - agricultural policy - economic development
    Cuban Sugar Industry: Transnational Networks and Engineering Migrants in Mid-Nineteenth Century Cuba
    Curry Machado, J.M. - \ 2011
    New York : Palgrave Macmillan - ISBN 9780230111394 - 278
    cuba - latijns-amerika - geschiedenis - agrarische geschiedenis - suikerindustrie - suiker - beplantingen - migranten - migrantenarbeid - interraciale relaties - immigranten - ontwikkeling - technologie - innovatie adoptie - industrialisatie - stoommachines - slavernij - agrarische handel - cuba - latin america - history - agricultural history - sugar industry - sugar - plantations - migrants - migrant labour - race relations - immigrants - development - technology - innovation adoption - industrialization - steam engines - slavery - agricultural trade
    Technological innovation was central to nineteenth-century Cuba’s lead in world sugar manufacture. Along with steam-powered machinery came migrant engineers, indispensable aliens who were well rewarded for their efforts. These migrant engineers remained perennial outsiders, symbolic of Cuba's growing economic dependency, privileged scapegoats unconsciously caught up in the island's political insecurities. This book tells the story of a group of forgotten migrant workers who anonymously contributed to Cuba's development and whose experience helps illuminate both the advance of the Cuban sugar industry and the processes by which the island was bound into global commodity-driven networks of control, dependency, and resistance.
    Sugar quotas: yes or no? : economic consequences for sector, chain, international market situation and third world
    Smit, A.B. ; Bont, C.J.A.M. de - \ 2011
    Den Haag : LEI Wageningen UR (LEI report / LEI Wageningen UR 2011-065) - ISBN 9789086155408 - 44
    suiker - suikerbieten - landbouwbeleid - agrarische economie - quota's - akkerbouw - bedrijfsresultaten in de landbouw - sugar - sugarbeet - agricultural policy - agricultural economics - quotas - arable farming - farm results
    Het ministerie van EL&I heeft het LEI gevraagd inzicht te verschaffen in de argumenten voor en tegen voortzetting van het centrale element van de huidige suikermarktordening, de quotering, na september 2015. De centrale vraag daarbij is: Wat zijn de gevolgen voor telers, verwerkende industrie, de andere schakels in de suikerketen en andere belanghebbenden in met name Nederland van voortzetting respectievelijk een fundamentele verandering van het Europese suikerbeleid? De resultaten in dit rapport zijn gebaseerd op literatuuronderzoek, waarmee de factoren die een rol spelen in de suikermarkt zijn geïnventariseerd, en op de toepassing van een aantal modellen. Met de modellen zijn aan de hand van een aantal uitgangspunten de effecten van beleidsveranderingen voor onder meer de productie van suiker, de oppervlakte suikerbieten en de inkomens van suikerbietentelers en de toegevoegde waarde en de werkgelegenheid in het akkerbouwcomplex in Nederland ingeschat.
    Wel of geen suikerquotering? Economische gevolgen voor sector, keten, internationale marktverhoudingen en derde wereld
    Smit, A.B. ; Bont, C.J.A.M. de; Helming, J.F.M. ; Leeuwen, M.G.A. van; Meer, R.W. van der; Berkhout, P. ; Dijk, M. van; Janssens, S.R.M. ; Jager, J.H. - \ 2011
    Den Haag : LEI, onderdeel van Wageningen UR (Rapport / LEI : Onderzoeksveld Sector en ondernemerschap ) - ISBN 9789086155330 - 123
    agrarische economie - quota's - landbouwbeleid - gemeenschappelijk landbouwbeleid - invoerrechten - bedrijfseconomie - suiker - wereldmarkten - economische analyse - scenario-analyse - agricultural economics - quotas - agricultural policy - cap - import levies - business economics - sugar - world markets - economic analysis - scenario analysis
    De toekomst van het Europese suikerbeleid houdt de betrokken partijen bezig. Afschaffing van de suikerquota zou een breuk met het tot dusver gevoerde beleid inhouden. Voor het ministerie van EL&I was dit aanleiding om het LEI opdracht te geven om hierover een studie te doen. In dit rapport wordt verslag gedaan van de bevindingen van de onderzoekers. Het blijkt dat de economische gevolgen van de afschaffing van de quotering voor de Nederlandse akkerbouw divers zijn en sterk verschillen per individueel bedrijf.
    Chemoenzymatic synthesis of biotin-appended analogues of gangliosides GM2, GM1, GD1 and GalNAc-GD1a for solid-phase applications and improved ELISA tests
    Pukin, A. ; Florack, D.E.A. ; Brochu, D. ; Lagen, B. van; Visser, G.M. ; Wennekes, T. ; Gilbert, M. ; Zuilhof, H. - \ 2011
    Organic & Biomolecular Chemistry 9 (2011)16. - ISSN 1477-0520 - p. 5809 - 5815.
    surface-plasmon resonance - carbohydrate microarrays - campylobacter-jejuni - cholera-toxin - oligosaccharide microarrays - biological-systems - guillain-barre - nmr analysis - binding - sugar
    Biotinylated analogues of gangliosides GM2, GM1, GD1a and GalNAc-GD1a were synthesized in high yields using glycosyltransferases from Campylobacter jejuni. The presence of a biotin moiety in the aglycone part of these mimics allows for attachment of these materials onto various streptavidin-coated surfaces. Analysis of the interaction of biotin-appended GM1 with the B subunit of Escherichia coli heat-labile enterotoxin performed in a modified ELISA procedure shows the potential of this compound to replace the natural GM1 in toxin detection.
    Concurrentiemonitor suiker
    Galen, M.A. van; Janssens, S.R.M. ; Meer, R.W. van der; Baltussen, W.H.M. - \ 2011
    Den Haag : LEI, onderdeel van Wageningen UR (LEI-rapport : Onderzoeksveld Markt & ketens ) - ISBN 9789086155026 - 69
    suikerindustrie - suiker - agrarische economie - marktconcurrentie - landbouwsector - landbouwprijzen - internationale vergelijkingen - ketenmanagement - internationale handel - suikerbieten - sugar industry - sugar - agricultural economics - market competition - agricultural sector - agricultural prices - international comparisons - supply chain management - international trade - sugarbeet
    Rapport in het kader van het project concurrentiemonitor. In dit project zijn de verschillende beleidsmaatregelen, de productie en verwerking van suikerbieten en suikerriet op wereldschaal en de internationale handel in suiker in kaart gebracht.
    Duurzaamheid van biobased producten : energiegebruik en broeikasgasemissie van producten met suikers als grondstof
    Bos, H.L. ; Conijn, J.G. ; Corre, W.J. ; Meesters, K.P.H. ; Patel, M. - \ 2011
    Wageningen : Wageningen UR - Food & Biobased Research (Groene grondstoffen 11) - 54
    biobased economy - chemie op basis van biologische grondstoffen - suiker - bioplastics - suikergewassen - duurzaamheid (sustainability) - energiegebruik - broeikasgassen - emissie - biobased economy - biobased chemistry - sugar - bioplastics - sugar crops - sustainability - energy consumption - greenhouse gases - emission
    In deze studie is onderzocht hoe de duurzaamheid van verschillende biobased producten die uit fermenteerbare suikers kunnen worden gemaakt zich tot elkaar verhoudt. Daarbij is gekeken naar het gebruik van niet-hernieuwbare energie en de uitstoot van broeikasgassen tijdens het gehele productieproces, inclusief het telen van de gewassen. Er zijn vijf verschillende gewassen met elkaar vergeleken. In de studie zijn verschillende invalshoeken gekozen, waarbij in het ene geval er voor wordt gekozen de co-producten te verzamelen en om te zetten in energie, en in het andere geval de huidige landbouwpraktijk wordt aangenomen, waarbij co-producten deels op het land blijven liggen. Verder wordt het effect getoond van verschillende manieren om de data te presenteren. Drie manieren van presenteren leiden schijnbaar tot verschillende conclusies.
    Check title to add to marked list
    << previous | next >>

    Show 20 50 100 records per page

     
    Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.