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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Bioeconomy mapping report, D 1.1 : An overview of the bioeconomy
Bos, H.L. ; Kranendonk, R.P. ; Harmsen, P.F.H. ; Schrijver, R.A.M. ; Leeuwen, J.J.A. van - \ 2018
EU (Bloom ) - 45 p.
biobased economy - biomass - biobased materials - biobased chemistry
Smullen van beschimmeld stro
Hendriks, Wouter ; Cone, John - \ 2018
biobased economy - animal nutrition - biomass - fibres - enzymes - digestibility - straw
Biomass Pretreatment and Enzymatic Hydrolysis Dynamics Analysis Based on Particle Size Imaging
Kapsokalyvas, Dimitrios ; Wilbers, Arnold ; Boogers, Ilco A.L.A. ; Appeldoorn, Maaike M. ; Kabel, Mirjam A. ; Loos, Joachim ; Zandvoort, Marc A.M.J. Van - \ 2018
Microscopy and Microanalysis 24 (2018)5. - ISSN 1431-9276 - p. 517 - 525.
biomass - enzymatic hydrolysis - large field of view - particle length distribution

Parameters such as pretreatment method, enzyme type and concentration, determine the conversion efficiency of biomass' cellulose and hemicellulose to glucose and mainly xylose in biomass-based fuel production. Chemical quantification of these processes offers no information on the effect of enzymatic hydrolysis (EH) on particle morphology. We report on the development of a microscopy method for imaging pretreated biomass particles at different EH stages. The method was based on acquiring large field of view images, typically 20×10 mm2 containing thousands of particles. Morphology of particles with lengths between 2 μm and 5 mm could be visualized and analyzed. The particle length distribution of corn stover samples, pretreated with increasing amounts of sulfuric acid at different EH stages, was measured. Particle size was shown to be dependent on pretreatment severity and EH time. The methodology developed could offer an alternative method for characterization of EH of biomass for second generation biofuels and visualization of recalcitrant structures.

Delicious mouldy straw : animal nutrition
Hendriks, Wouter ; Cone, John - \ 2018
biobased economy - animal nutrition - biomass - fibres - enzymes - digestibility - straw
Fungal footwear and orange peel fabrics : the sustainable catwalk
Poldner, Kim ; Houthoff, Iris ; Oever, Martien van den - \ 2018
biobased economy - clothing - biomass - fibres - biobased materials - chemistry
Systemic: Circular solutions for biowaste
Schoumans, O.F. ; Regelink, I.C. ; Ehlert, P.A.I. - \ 2018
Wageningen : Wageningen University & Research
EU H2020
Groene Mineralen Centrale : Duurzame productie van mineralen, biogas en schoon water
Schoumans, O.F. ; Regelink, I.C. ; Ehlert, P.A.I. - \ 2018
Wageningen : Wageningen University & Research
TKI
Factsheets SYSTEMIC Outreach Location
Schoumans, O.F. ; Regelink, I.C. ; Ehlert, P.A.I. - \ 2018
Wageningen : Wageningen University & Research - 23 p.
EU H2020
SYSTEMIC Newsletter, issue 1
Schoumans, O.F. ; Regelink, I.C. ; Ehlert, P.A.I. - \ 2018
Wageningen : Wageningen University & Research - 3 p.
EU H2020
Paddenstoelen aan de voeten en sinaasappelschillen om het lijf: duurzaam op de catwalk
Poldner, Kim ; Houthoff, Iris ; Oever, Martien van den - \ 2018
biobased economy - biomass - fibres - biobased materials - clothing
Characterization of phenology, physiology, morphology and biomass traits across a broad Euro-Mediterranean ecotypic panel of the lignocellulosic feedstock Arundo donax
Fabbrini, Francesco ; Ludovisi, Riccardo ; Alasia, Omar ; Flexas, Jaume ; Douthe, Cyril ; Ribas Carbó, Miquel ; Robson, Paul ; Taylor, Gail ; Scarascia-Mugnozza, Giuseppe ; Keurentjes, Joost J.B. ; Harfouche, Antoine - \ 2018
Global change biology Bioenergy (2018). - ISSN 1757-1693
Arundo donax - biomass - ecotype variability - growth traits - lignocellulosic biomass - multivariate analysis - perennial grasses - phenology - physiology

Giant reed (Arundo donax L.) is a perennial rhizomatous grass, which has attracted great attention as a potential lignocellulosic feedstock for bioethanol production due to high biomass yield in marginal land areas, high polysaccharide content and low inhibitor levels in microbial fermentations. However, little is known about the trait variation that is available across a broad ecotypic panel of A. donax nor the traits that contribute most significantly to yield and growth in drought prone environments. A collection of 82 ecotypes of A. donax sampled across the Mediterranean basin was planted in a common garden experimental field in Savigliano, Italy. We analysed the collection using 367 clumps representing replicate plantings of 82 ecotypes for variation in 21 traits important for biomass accumulation and to identify the particular set of ecotypes with the most promising potential for biomass production. We measured morpho-physiological, phenological and biomass traits and analysed causal relationships between traits and productivity characteristics assessed at leaf and canopy levels. The results identified differences among the 82 ecotypes for all studied traits: those showing the highest level of variability included stomatal resistance, stem density (StN), stem dry mass (StDM) and total biomass production (TotDM). Multiple regression analysis revealed that leaf area index, StDM, StN, number of nodes per stem, stem height and diameter were the most significant predictors of TotDM and the most important early selection criteria for bioenergy production from A. donax. These traits were used in a hierarchical cluster analysis to identify groups of similar ecotypes, and a selection was made of promising ecotypes for multiyear and multisite testing for biomass production. Heritability estimates were significant for all traits. The potential of this ecotype collection as a resource for studies of germplasm diversity and for the analysis of traits underpinning high productivity of A. donax is highlighted.

Biobased performance materials in a circular economy
Bolck, Christiaan - \ 2018
biobased economy - biobased materials - biomass - renewable energy
Christiaan Bolck (Biobased Performance Materials): ‘We doen onderzoek dat impact heeft’
Bolck, Christiaan - \ 2018
biobased economy - biobased materials - biomass - polymers - bioplastics - dyes - pigments - paints - plant extracts
Er is nog veel te winnen
Thoden van Velzen, Ulphard ; Molenveld, Karin ; Hugenholtz, Jeroen - \ 2018
biobased economy - recycling - biobased materials - biomass - residual streams - agricultural wastes - biofuels - bioenergy

Willen we ons huishoudelijk afval optimaal benutten, dan moeten we de grondstoffen erin efficiënter scheiden en terugwinnen. 'We zijn nog ver verwijderd van het ideale, circulaire beeld.'

Praktijkonderzoek bioraffinage
Doorn, Wim van; Baars, J.J.P. ; Dam, J.E.G. van; Keijsers, E.R.P. ; Yilmaz, G. - \ 2018
Amersfoort : Stichting Toegepast Onderzoek Waterbeheer (STOWA rapport 2018-25) - ISBN 9789057737930 - 59
waterbeheer - bioraffinage - materialen uit biologische grondstoffen - biomassa - waterplanten - reststromen - water management - biorefinery - biobased materials - biomass - aquatic plants - residual streams
Waterschappen en andere waterbeheerders zien dat de laatste jaren in toenemende mate inspanningen nodig zijn om problemen door uitheemse en/of invasieve plantensoorten in het waterbeheer te beheersen. Echte oplossingen zijn nog steeds niet beschikbaar. Tegelijkertijd werken de waterschappen samen met andere gebiedsbeheerders en ketenpartners aan verduurzaming van het waterbeheer, onder meer door bij te dragen aan een meer circulaire economie, en aan realisatie van de Kader Richtlijn Water doelstellingen. In dit project is onderzocht hoe bioraffinage kan bijdragen aan deze verduurzaming, door het produceren van diverse nuttige grondstoffen uit groenresten van het waterbeheer. Daarbij lag de nadruk op het verwaarden van woekerende waterplanten en oevermaaisels via kleinschalige, mobiele bioraffinage. Daarbij worden op de plaats ter waar maaisels vrijkomen via een bioraffinage machine de planten opgewerkt tot diverse producten, zoals eiwitten (voor diervoer of technische toepassingen), vezels (voor diervoeder, papier/karton of biocomposiet), mineralenconcentraat (meststof) en eventueel substraat voor vergisting tot biogas. Loosbaar water is wat overblijft en terug kan naar het aquatisch milieu.
Europese alternatieve bron voor natuurrubber
Meer, I.M. van der - \ 2018
Topsector Tuinbouw en Uitgangsmaterialen - 2 p.
biobased economy - biomass - biobased materials - rubber - taraxacum officinale
Natuurrubber is onmisbaar voor de samenleving. De toekomstige vraag zal echter veel groter zijn dan het huidige aanbod. Bijna al het rubber is bovendien afkomstig van, kwetsbare, plantages uit Zuidoost-Azië. In dit project werken we aan een veelbelovend Europees alternatief voor de productie van natuurrubber: de Russische paardenbloem.
Toine Timmermans: ‘Ik pleit voor grootschalige inzet reststromen’
Timmermans, Toine - \ 2018
residual streams - biomass - nutrition - agricultural wastes - animal health - animal welfare - animal production
Bioplastic uit geur van salie
Jongedijk, Esmer - \ 2018
biomass - biobased materials - bioplastics - sage
Laccase-Mediated Grafting on Biopolymers and Synthetic Polymers : A Critical Review
Slagman, Sjoerd ; Zuilhof, Han ; Franssen, Maurice C.R. - \ 2018
ChemBioChem 19 (2018)4. - ISSN 1439-4227 - p. 288 - 311.
biomass - enzyme catalysis - grafting - polymers - surface chemistry
Laccase-mediated grafting on lignocelluloses has gained considerable attention as an environmentally benign method to covalently modify wood, paper and cork. In recent decades this technique has also been employed to modify fibres with a polysaccharide backbone, such as cellulose or chitosan, to infer colouration, antimicrobial activity or antioxidant activity to the material. The scope of this approach has been further widened by researchers, who apply mediators or high redox potential laccases and those that modify synthetic polymers and proteins. In all cases, the methodology relies on one- or two-electron oxidation of the surface functional groups or of the graftable molecule in solution. However, similar results can very often be achieved through simple deposition, even after extensive washing. This unintended adsorption of the active substance could have an adverse effect on the durability of the applied coating. Differentiating between actual covalent binding and adsorption is therefore essential, but proves to be challenging. This review not only covers excellent research on the topic of laccase-mediated grafting over the last five to ten years, but also provides a critical comparison to highlight either the lack or presence of compelling evidence for covalent grafting.
De toekomst van hout in de biobased economy
Annevelink, E. ; Harmsen, P.F.H. ; Spijker, J.H. - \ 2018
Vakblad Natuur Bos Landschap 15 (2018)141. - ISSN 1572-7610 - p. 7 - 11.
biobased economy - hout - biobrandstoffen - biomassa - hernieuwbare energie - materialen uit biologische grondstoffen - cellulose - lignine - vezels - wood - biofuels - biomass - renewable energy - biobased materials - lignin - fibres
De laatste jaren is de biobased economy sterk gegroeid door allerlei activiteiten, variërend van fundamenteel onderzoek naar nieuwe biobased toepassingen, tot het op commerciële schaal vervaardigen van biobased producten. Welke kansen biedt dit voor hout en houtige biomassa en wat zijn de verwachte effecten op de houtmarkt?
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