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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Tolerantie tegen damping-off in spinazie
Postma, Joeke - \ 2018
Met geo de boer op
Rip, F.I. ; Postma, Sytske - \ 2018
Geo-Info 15 (2018)4. - ISSN 1572-5464 - p. 48 - 50.
Future stewards? Connection to nature starts from childhood experiences in nature areas
Elands, B.H.M. ; Postma, L. ; Schouten-van der Laan, L. - \ 2018
In: The 9th International Conference on Monitoring and Management of Visitors in Recreational and Protected Areas (MMV9). - IRSTEA - ISBN 9782955125113 - p. 363 - 364.
Werkgroep Bodempathogenen en bodemmicrobiologie : Van een Chinese delegatie tot het organiseren van een bodemmicrobioom-dag
Os, G. van; Postma, J. - \ 2018
Gewasbescherming 49 (2018)1. - ISSN 0166-6495 - p. 17 - 17.
Jaarverslagen KNPV-Werkgroepen over 2017
Plant- en bodemmicrobioom – belang voor gewasbescherming : Plant and soil microbiome – relevance for crop protection : 2 november, 2017, Akoesticum, Ede
Postma, J. ; Wal, A. van der; Overbeek, L. van; Korthals, G. ; Goud, J.K. - \ 2018
Gewasbescherming 49 (2018)4/5/6. - ISSN 0166-6495 - p. 126 - 130.
Er gaat geen week voorbij, of er staat iets over micro-organismen in de krant: nieuwe infectieziektes, ziekenhuis met resistente bacteriën, de rol van darmflora op het ontstaan van obesitas in muizen. Ook de technologie om micro-organismen en hun complexe levensgemeenschappen in kaart te brengen maakt een snelle ontwikkeling door. Daarnaast zijn de technieken om grote hoeveelheden sequentiedata te verkrijgen en digitale dataopslag enorm toegenomen. Wat betekent dit voor de gewasbescherming?
Severity of olfactory deficits is reflected in functional brain networks-An fMRI study
Reichert, Johanna L. ; Postma, Elbrich M. ; Smeets, Paul A.M. ; Boek, Wilbert M. ; Graaf, Kees de; Schöpf, Veronika ; Boesveldt, Sanne - \ 2018
Human Brain Mapping 39 (2018)8. - ISSN 1065-9471 - p. 3166 - 3177.
Anosmia - FMRI - Functional connectivity - Hyposmia - Neuronal plasticity - Olfaction - Olfactory disorders
Even though deficits in olfactory function affect a considerable part of the population, the neuronal basis of olfactory deficits remains scarcely investigated. To achieve a better understanding of how smell loss affects neural activation patterns and functional networks, we set out to investigate patients with olfactory dysfunction using functional magnetic resonance imaging (fMRI) and olfactory stimulation. We used patients' scores on a standardized olfactory test as continuous measure of olfactory function. 48 patients (mean olfactory threshold discrimination identification (TDI) score=16.33, SD=6.4, range 6 - 28.5) were investigated. Overall, patients showed piriform cortex activation during odor stimulation compared to pure sniffing. Group independent component analysis indicated that the recruitment of three networks during odor stimulation was correlated with olfactory function: a sensory processing network (including regions such as insula, thalamus and piriform cortex), a cerebellar network and an occipital network. Interestingly, recruitment of these networks during pure sniffing was related to olfactory function as well. Our results support previous findings that sniffing alone can activate olfactory regions. Extending this, we found that the severity of olfactory deficits is related to the extent to which neural networks are recruited both during olfactory stimulation and pure sniffing. This indicates that olfactory deficits are not only reflected in changes in specific olfactory areas but also in the recruitment of occipital and cerebellar networks. These findings pave the way for future investigations on whether characteristics of these networks might be of use for the prediction of disease prognosis or of treatment success.
Verbeteren bodem- en substraatweerbaarheid
Postma, Joeke - \ 2018
Sturen op bodemweerbaarheid door toediening van organische stoffen
Postma, J. - \ 2018
Reuk- en smaakveranderingen bij kankerpatiënten : De invloed op voedingsstatus, smaakbeleving en kwaliteit van leven
Postma, Elbrich - \ 2018
Wageningen : Wageningen University & Research, Wetenschapswinkel (Wetenschapswinkel rapport 338) - ISBN 9789463438940 - 36
Biorefinery of the macroalgae Ulva lactuca : extraction of proteins and carbohydrates by mild disintegration
Postma, P.R. ; Cerezo-Chinarro, O. ; Akkerman, R.J. ; Olivieri, G. ; Wijffels, R.H. ; Brandenburg, W.A. ; Eppink, M.H.M. - \ 2018
Journal of Applied Phycology 30 (2018)2. - ISSN 0921-8971 - p. 1281 - 1293.
Enzymes - High shear homogenization - Macroalgae - Osmotic shock - Protein - Pulsed electric field

The effect of osmotic shock, enzymatic incubation, pulsed electric field, and high shear homogenization on the release of water-soluble proteins and carbohydrates from the green alga Ulva lactuca was investigated in this screening study. For osmotic shock, both temperature and incubation time had a significant influence on the release with an optimum at 30 °C for 24 h of incubation. For enzymatic incubation, pectinase demonstrated being the most promising enzyme for both protein and carbohydrate release. Pulsed electric field treatment was most optimal at an electric field strength of 7.5 kV cm−1 with 0.05 ms pulses and a specific energy input relative to the released protein as low as 6.6 kWh kgprot −1. Regarding literature, this study reported the highest protein (~ 39%) and carbohydrate (~ 51%) yields of the four technologies using high shear homogenization. Additionally, an energy reduction up to 86% was achieved by applying a novel two-phase (macrostructure size reduction and cell disintegration) technique.

Microalgal biorefinery for bulk and high-value products : Product extraction within cell disintegration
Postma, P.R. ; Lam, G.P. 't; Barbosa, M.J. ; Wijffels, R.H. ; Eppink, M.H.M. ; Olivieri, Giuseppe - \ 2017
In: Handbook of Electroporation Springer International Publishing - ISBN 9783319328850 - p. 2205 - 2224.
Cell disintegration - Energy consumption - Microalgal biorefinery - PEF - Protein extraction
Microalgae are a promising source for proteins, lipids, and carbohydrates for the cosmetic, nutraceutical, chemical, food/feed, and biofuel industry. In comparison with soy and palm oil, microalgae can be produced in a more sustainable way. To make microalgae production economically feasible, all biomass ingredients need to be efficiently utilized, similar to petroleum refineries in which oil is fractionated in fuels and a variety of products with higher value. However severe conditions can affect the properties of some components in the biomass. To overcome this, focus needs to be put on biorefinery techniques which are mild and effective. Microalgal biorefinery is a linear process consisting of harvesting, cell disintegration, sequential extraction, and further fractionation. Among these steps, the cell disintegration often represents a bottleneck for the extraction of hydrophilic or hydrophobic components, due to the presence of a tough cell wall in many strains. State of the art knowledge on both novel and classical techniques for product extraction within cell disintegration is presented. Comparison is made on the basis of two main criteria: yield of disintegration and energy consumption. The current work gives also a comprehensive outlook on business cases for microalgae biorefinery.
Veredelingsonderzoek naar damping-off in spinazie : Groene Veredeling Spinazie
Magnée, Kim ; Scholten, O.E. ; Lammerts Van Bueren, E. ; Groot, S.P.C. ; Postma, J. - \ 2017
Wageningen : Wageningen University & Research - 2 p.
Bijeenkomst consortiumpartners PPS Beter bodembeheer
Postma, Joeke - \ 2017
startbijeenkomst Beter Bodembeheer, inrichting PPS, met presentaties en discussies
Disease suppressive soil: theory and practice – Influence of soil management on disease suppressiveness in agricultural systems
Postma, Joeke - \ 2017
lezing voor studenten van de Plant soil interactions group
Disease management and suppressive soils.
Postma, Joeke - \ 2017
Conservation Agriculture college
Werkgroep Bodempathogenen en bodemmicrobiologie : The year after…
Os, G.J. van; Postma, J. - \ 2017
Gewasbescherming 48 (2017)1. - ISSN 0166-6495 - p. 17 - 17.
Gewassen en bodemleven beïnvloeden de bodemkwaliteit: "Laat het bodemleven voor je werken"
Postma, Joeke ; Sukkel, Wijnand - \ 2017

Tijdens de Biobeurs bekeken 150 personen de presentaties over bodemvruchtbaarheid van Wijnand Sukkel en bodemweerbaarheid van Joeke Postma, beiden onderzoekers van Wageningen Plant Research

8000 iepen krijgen een griepprik
Postma, Joeke - \ 2017

8000 Haagse iepen krijgen de komende weken een 'griepprik' tegen de iepziekte. Een jaarlijkse injectie wapent de bomen tegen aggressieve schimmels.

Bodemdiversiteit- de onzichtbare hulptroepen van de boer
Postma, Joeke - \ 2017
Bodembiodiversiteit – de onzichtbare hulptroepen van de boer; Effect van bodemleven op het verhogen van ziektewering
Postma, Joeke - \ 2017
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