Eijk, P. van \ Goot, F. van der \ Tol, S. \ Wesenbeeck, B. van \ Wilms, T. \ 2018
water management - water quality - drinking water - water supply
Abstract: In Demak in Indonesië worden mangrovebossen in hoog tempo aangetast door aquacultuur, stedelijke ontwikkeling, vervuiling en infrastructuur. Met het verdwijnen van mangroven gaat biodiversiteit verloren, gaat de visserij achteruit en wordt de kust kwetsbaar voor verzilting, erosie en stormschade. Klimaatverandering doet daar nog een schepje bovenop. Is het mogelijk om een win-win situatie te creëren voor mens en natuur door natuurlijke processen te benutten om mangrovekusten te herstellen?
Abstract: Atze Jan van der Goot: The amount of meat and dairy that you and I eat is not seen as a sustainable diet. This can be seen as a problem, as these products are easy to use and very delicious. In Wageningen we are busy developing sustainable, vegetarian meat substitutions that look and taste like real meat. In this WURtalk I will tell about why and how this laboratory meat is made.
Abstract: In 2013 a new STW research programme was started on sustainable protein recovery. This STW Protein Programme consisted of five sustainable protein technology projects, which aimed at developing innovative methods to extract proteins from plant leaves, microalgae and insects to meet the increasing demand for food proteins for humans and livestock. The aim of the additional STW-project ‘Meer en Beter Eiwit’ was to summarize and evaluate the main results and conclusions of these five projects. Besides, some more recent additional insight on protein extraction was supplemented. Project partners including WUR, knowledge institutes and industry were interviewed to obtain their opinion on the project performed and future research needs.This has led to a vision document that gives direction to future research in the field of protein and technology.The approach of this project was to study the topic from start (biomass) via technology to finish (product). It was further put into a larger perspective, looking at the entire chain. When relevant, additional aspects such a soil quality and global protein demands were included.Biomass choice. When choosing a particular protein-recovery technology,biomass selection is the first requirement. Much research is being done on new biomass. However, the use of existing raw materials and residual flows should not be neglected.By building on existing processes and chains, fast(er)implementation is possible. Traditional crops like grain are relatively dry, and the proteins are present in protein bodies. Therefore, they are more easily extracted and give high yields and purities. New, green crops still require a lot of development.Protein streams in the world Protein-rich sources, like soybeans, rapeseed, maize and wheat are being consumed by both humans and animals.The crop with the largest production volume in Europe is is wheat, followed by potato, maize and barley. Together these four crops cover about 85% of the production of protein crops. Worldwide, maize is the largest crop. By far, the largest amount of proteins is being used in feed (>75%),followed by food consumption. Only a limited amount of proteins is isolated for specific use, for example as emulsifiers in different food formulations. An even smaller amount is used for application in chemicals or materials.Protein purity and functionality. Much research from the past focused on obtaining pure protein, e.g. RuBisCo from green leaves or protein from potato juice. Such processes can be economically feasible if the protein produced has a specific functionality, which allows for use as a high-quality food ingredient. However,high purity is not always required to obtain a certain functionality. In such cases the use of less refined,functional fractions is an interesting alternative.Mild separation and fractionation. When purified components are replaced by functional fractions, less intensive separation conditions can be used.Dry separation of proteins yielding a concentrate could bean alternative to wet separation yielding an isolate. Energy consumption is less, and a more native protein can be obtained. Fractionation can also lead to more complete use of biomass, generating little to no side streams.Chain approach for economy and sustainability. Next, it is also important to include the possibility of complete utilization of the raw material and closing cycles.These latter aspects can make or break economic feasibility and sustainability in a process. Efficient and effective use of protein and nitrogen, while maintaining biodiversity, is the most important development point for sustaining life on this earth. Modern agriculture should further improve nitrogen and feed use efficiencies to increase sustainability. Program evaluation. Next to conclusions on the content of the five projects, the evaluation also provides conclusions on the set-up of the STW/EZ programme on sustainable protein. Both academic and industrial participants acknowledged the added value of the link between fundamental research by a PhD and applied research by research institutes that was made in the project set-up. They also partly attributed the project successes to the multidisciplinary approach in the projects. The possibility within the projects to look at all aspects, and the ability to think anew on existing processes and develop new concepts of biorefinery greatly added to current scientific knowledge on protein extraction.
Eekelen, E.M.M. van \ Sittoni, L. \ Goot, F. van der \ Nieboer, H.E. \ Baptist, M.J. \ Boer, J. \ Tonneijck, F.H. \ 2017
Abstract: World-wide the turbidity of many rivers, estuaries and shallow seas is increasing, leading to degradation of water quality and growing siltation. Large volumes of dredged sediments are disposed and lost offshore, while coastal regions and river banks are eroding, exposing towns to more recurrent flooding. A huge amount of sediment is trapped in reservoirs behind dams, reducing their storage and flood mitigation capabilities. These are all indicators that smart and integrated sediment management is necessary. At the same time, coastal development activities demand for large quantities of sediment as building material, with many areas of the world characterized by fine sediments (mud), especially in large river delta regions. Integrated sediment management approaches leveraging on Building with Nature (BwN) concepts represents a potentially powerful solution to these enormous world-wide challenges and societal needs. With this in mind, EcoShape initiated the Living Lab for Mud (LLM), an initiative that aims to develop integrated knowledge and technologies to improve understanding and implementation of management, use and reuse of (fine and soft) sediments often linked to the reinforcement, safety and restoration of coastal ecosystems (e.g. salt marshes and mangroves) or land reclamation.The LLM consists of a series of pilot projects within and outside the Netherlands, which integrate the various aspects and processes of sediment management: from sedimentation and resuspension, to fate and transport, to consolidation and strength development. The LLM integrates these physical processes with biota and socio-economic aspects, in order to develop feasible, applicable and sustainable BwN based solutions. Pilots include strategic sediment disposal to naturally nourish coastal mudflats (i.e. Mud Motor, The Netherlands), enhancing sediment trapping to encourage mangroves restoration and coastal aggradation (i.e. Demak, Indonesia), and ripening of fine dredged sediments for production of building material (i.e. Kleirijperij, The Netherlands).This presentation will introduce the LLM initiative and give an overview of these pilot projects.
Abstract: Karsten Reise brengt apocalyptische voorspellingen over zeespiegelstijging terug tot hanteerbare proporties. ‘Aardbeien van drijvende akkers, stel je toch voor hoe dat zou zijn!’ De bioloog van het Duitse waddeneiland Sylt kijkt verder dan de dijk.
Abstract: Committed by the Dutch poultry sector research is carried out concerning acting perspective for prevention of AI-introduction on poultry farms, based on existing knowledge. The findings are shown in two parts: part I with practical advices for poultry farmers, and part II with its underpinning with a summary of existing knowledge of risk factors, preventive measures, early detection and possibilities for promoting desired (preventive) behaviour.
sustainability - food process engineering - foods - food sciences - food technology - raw materials - meat alternates
Abstract: Verduurzaming van de productie van onze dagelijkse levensmiddelen vergt een omslag in de industrieel-technologische manier van grondstofgebruik. Granen, aardappels en soja worden nu gescheiden in zo zuiver mogelijke fracties als eiwitten en oliën. Gebruik van de minder zuivere fracties leidt zowel tot minder energie- en grondstoffenverlies als tot gezondere producten. Die gedachten deelt prof.dr. Atze Jan van der Goot donderdag 10 maart in zijn inaugurele rede als persoonlijk hoogleraarschap Duurzame eiwitstructurering aan Wageningen University.
Abstract: Door middel van een case-control studie is onderzoek gedaan naar veronderstelde risicofactoren voor introductie van laag-pathogene aviaire influenza (LPAI) virus op pluimveelegbedrijven met vrije uitloop. Onder een LPAI virus werd in dit onderzoek verstaan: een aviair influenza virus van elk subtype (H1 tm H16), met uitzondering van de hoog pathogene aviaire influenza (HPAI) virussen. Veertig bedrijven met een LPAI virus introductie in het verleden (cases) zijn vergeleken met 81 bedrijven waar geen introductie heeft plaats gevonden (controls) om te onderzoeken of potentiële risicofactoren voor een besmetting met een LPAI virus geïdentificeerd kunnen worden. Vragen over aanwezigheid van potentiële risicofactoren zijn door middel van enquêtes voorgelegd aan de pluimveehouders.
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