Searched for: subject%3A%22Organic%255C%2Bacids%22
(1 - 20 of 21)

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Ringk, A. (author), Li, X. (author), Gholamrezaie, F. (author), Smits, E.C.P. (author), Neuhold, A. (author), Moser, A. (author), van der Marel, C. (author), Gelinck, G.H. (author), Resel, R. (author), de Leeuw, D.M. (author), Strohriegl, P. (author)
This work describes n-type self-assembled monolayer field-effect transistors (SAMFETs) based on a perylene derivative which is covalently fixed to an aluminum oxide dielectric via a phosphonic acid linker. N-type SAMFETs spontaneously formed by a single layer of active molecules are demonstrated for transistor channel length up to 100 μm. Highly...
article 2013
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van Melis, C.C.J. (author), Almeida, C.B. (author), Kort, R. (author), Groot, M.N.N. (author), Abee, T. (author)
In this study, the impact of a range of organic acids and structurally similar alcohols with three to six carbon backbones and increasing lipophilic character, were tested on the germination behavior of B. cereus ATCC 14579 spores. This approach allowed substantiating whether the effectivity of the various compounds was largely dictated by...
article 2012
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Hemery, Y.M. (author), Anson, N.M. (author), Havenaar, R. (author), Haenen, G.R.M.M. (author), Noort, M.W.J. (author), Rouau, X. (author), TNO Kwaliteit van Leven (author)
This study evaluated the potential of using ultra-fine grinding and electrostatic separation of wheat bran as methods to improve the bioaccessibility of para-coumaric acid (pCA), sinapic acid (SA) and ferulic acid (FA) from bran-rich breads. Bran fractions were produced and used to bake white bread, whole-grain bread, and seven different bran...
article 2010
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Fernandes, H. (author), Mentink, A. (author), Bank, R. (author), Stoop, R. (author), van Blitterswijk, C. (author), de Boer, J. (author), TNO Kwaliteit van Leven (author)
Human multipotent mesenchymal stromal cells (hMSCs) are multipotent cells that, in the presence of appropriate stimuli, can differentiate into different lineages such as the osteogenic, chondrogenic, and adipogenic lineages. In the presence of ascorbic acid, MSCs secrete an extracellular matrix mainly composed of collagen type I. Here we...
article 2010
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van Leeuwen, S.S. (author), Kralj, S. (author), Eeuwema, W. (author), Gerwig, G.J. (author), Dijkhuizen, L. (author), Kamerling, J.P. (author)
Mutagenesis of specific amino acid residues of the glucansucrase (GTF180) enzyme from Lactobacillus reuteri strain 180 yielded 12 mutant enzymes that produced modified exopolysaccharides (mEPSs) from sucrose. Ethanol-precipitated and purified mEPSs were subjected to linkage analysis, Smith degradation analysis, and 1D/2D <sup>1</sup>H NMR...
article 2009
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Bhattacharya, R. (author), de Kok, M.M. (author), Zhou, J. (author), TNO Industrie en Techniek (author)
We present a simple fabrication process that produces polymeric charge storage devices directly onto a textile surface. By using a coating of poly-(3,4-ethylenedioxythiophene):poly(styrene sulphonic acid) (PEDOT) as a solid electrolytic layer deposited between two woven silver coated polyamide yarns, we have created a simple polymeric textile...
article 2009
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Rijsdijk, K.F. (author), Hume, J.P. (author), Bunnik, F. (author), Florens, F.B.V. (author), Baider, C. (author), Shapiro, B. (author), van der Plicht, J. (author), Janoo, A. (author), Griffiths, O. (author), van den Hoek Ostende, L.W. (author), Cremer, H. (author), Vernimmen, T. (author), de Louw, P.G.B. (author), Bholah, A. (author), Saumtally, S. (author), Porch, N. (author), Haile, J. (author), Buckley, M. (author), Collins, M. (author), Gittenberger, E. (author), TNO Bouw en Ondergrond (author)
Although the recent history of human colonisation and impact on Mauritius is well documented, virtually no records of the pre-human native ecosystem exist, making it difficult to assess the magnitude of the changes brought about by human settlement. Here, we describe a 4000-year-old fossil bed at Mare aux Songes (MAS) in south-eastern Mauritius...
article 2009
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ten Cate, A.T. (author), Reinders, S.A.F. (author), Turkenburg, D.H. (author), Bruin, A. (author), D'Souza, F. (author), Donnelly, G.T. (author), Willemsen, P.R. (author), Maas, J.H. (author), van Bommel, K.J.C. (author), TNO Industrie en Techniek (author)
Polymer brush coatings, consisting of polymer chains covalently attached to a surface and being less than a hundred nanometer thick, allow the creation of functional surfaces without altering the inherent bulk properties or appearance of a product. Surface properties depend on the type and length of the polymer used, as well as on the grafting...
article 2009
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van Groenestijn, J.W. (author), Geelhoed, J.S. (author), Goorissen, H.P. (author), Meesters, K.P.M. (author), Stams, A.J.M. (author), Claassen, P.A.M. (author), TNO Kwaliteit van Leven (author)
Non-axenic operation of a 400 L trickle bed reactor inoculated with the thermophile Caldicellulosiruptor saccharolyticus, yielded 2.8 molH 2mol hexose converted. The reactor was fed with a complex medium with sucrose as the main substrate, continuously flushed with nitrogen gas, and operated at 73°C. The volumetric productivity was 22 mmolH2(L...
article 2009
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TNO Kwaliteit van Leven (author), Sivan, S.S. (author), Wachtel, E. (author), Tsitron, E. (author), Sakkee, N. (author), van der Ham, F. (author), Groot, J.de (author), Roberts, S. (author), Maroudas, A. (author)
Knowledge of rates of protein turnover is important for a quantitative understanding of tissue synthesis and catabolism. In this work, we have used the racemization of aspartic acid as a marker for the turnover of collagen obtained from healthy and pathological human intervertebral disc matrices. We measured the ratio of the D- and L-isomers in...
article 2008
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Nijkamp, K. (author), Westerhof, R.G.M. (author), Ballerstedt, H. (author), de Bont, J.A.M. (author), Wery, J. (author), TNO Kwaliteit van Leven (author)
A Pseudomonas putida S12 strain was constructed that is able to convert glucose to p-coumarate via the central metabolite l-tyrosine. Efficient production was hampered by product degradation, limited cellular L-tyrosine availability, and formation of the by-product cinnamate via L-phenylalanine. The production host was optimized by inactivation...
article 2007
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Weenink, X.O. (author), Punt, P.J. (author), van den Hondel, C.A.M.J.J. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)
Although filamentous fungi have a unique property of secreting a large amount of homologous extracellular proteins, the use of filamentous fungi as hosts for the production of heterologous proteins is limited because of the low production levels that are generally reached. Here, we report a general screening method for the isolation of mutants...
article 2006
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TNO Kwaliteit van Leven (author), Sivan, S.S. (author), Tsitron, E. (author), Wachtel, E. (author), Roughley, P.J. (author), Sakkee, N. (author), van der Ham, F. (author), Groot, J.de (author), Roberts, S. (author), Maroudas, A. (author)
We have used the racemization of aspartic acid as a marker for the "molecular age" of aggrecan components of the human intervertebral disc matrix (aggregating and non-aggregating proteoglycans as well as the different buoyant density fractions of aggrecan). By measuring the D/L Asp ratio of the various aggrecan species as a function of age and...
article 2006
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Nijkamp, K. (author), van Luijk, N. (author), de Bont, J.A.M. (author), Wery, J. (author), TNO Kwaliteit van Leven TNO Voeding (author)
A Pseudomonas putida S12 strain was constructed that efficiently produced thefine chemical cinnamic acid from glucose or glycerol via the central metabolite phenylalanine. The gene encoding phenylalanine ammonia lyase from the yeast Rhodosporidium toruloides was introduced. Phenylalanine availability was the main bottleneck in cinnamic acid...
article 2005
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de Visser, P.C. (author), Govaerts, C. (author), van Hooft, P.A.V. (author), Overkleeft, H.S. (author), van Schepdael, A. (author), Hoogmartens, J. (author)
In the course of the synthesis and purification of new polymyxins and analogues, formation of a by-product with identical mass was observed and it was believed that this might be the result of acyl migration from the Nα- to the Nγ-position of residue α,γ-diaminobutyric acid 1 (Dab1) under acidic conditions. Therefore, a LC-MS/MS study was...
article 2004
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TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author), Yi, X. (author), Conesa, A. (author), Punt, P.J. (author), Hager, L.P. (author)
Site-directed mutagenesis has been used to investigate the role of glutamic acid 183 in chloroperoxidase catalysis. Based on the x-ray crystallographic structure of chloroperoxidase, Glu-183 is postulated to function on distal side of the heme prosthetic group as an acid-base catalyst in facilitating the reaction between the peroxidase and...
article 2003
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van de Weerd, H. (author), van Riemsdijk, W.H. (author), Leijnse, A. (author)
Natural organic matter (NOM) can act as a carder for contaminants. Therefore it is of great importance to understand its adsorption/desorption and transport behavior. NOM is a mixture of molecules varying from simple small molecules like citric acid to complicated large molecules like humic acid. To simulate sorption and transport of NOM in...
article 2002
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Zhang, S.Y. (author), Wang, J.S. (author), Jiang, Z.C. (author), Chen, M.X. (author)
As a result of seriously polluted raw water sources, some water- treatment plants in China are intending to apply the biofilm process as a pretreatment prior to the traditional drinking water-treatment systems. These polluted raw waters contain higher total organic matter and ammonium than unpolluted waters. It has been reported that synthetic...
article 2000
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Román, C. (author), Fischer, H.R. (author), Meijer, E.W. (author), Technisch Physische Dienst TNO - TH (author)
Diblock copolymers consisting of polystyrene and acid-functionalized poly(propylene imine) dendrimers have been found to self-assemble spontaneously into regular microdomains. The hybride dendrimer-linear chain block copolymers yield highly asymmetric molecules which display an aggregation behavior at the strong segregation limit that differs...
article 1999
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Verweij, A. (author), Kientz, C.E. (author), van den Berg, J. (author), Prins Maurits Laboratorium TNO (author)
The applicability of different liquid chromatographic systems such as ion-exchange, ion-exclusion, reversed phase and ion-pair partition was studied for the analysis of a number of simple structurally related organophosphorus acids which lack a chromophoric group. Preliminary experiments based on these chromatographic systems were carried out on...
article 1988
Searched for: subject%3A%22Organic%255C%2Bacids%22
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