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Collins, S.L. (author), McMillan, A. (author), Seney, S. (author), van der Veer, C. (author), Kort, R. (author), Sumarah, M.W. (author), Reid, G. (author)Perturbations to the vaginal microbiota can lead to dysbiosis, including bacterial vaginosis (BV), which affects a large portion of the female population. In a healthy state, the vaginal microbiota is characterized by low diversity and colonization by Lactobacillus spp., whereas in BV, these species are displaced by a highly diverse population...article 2018
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Reimer, R.A. (author), Maathuis, A.J.H. (author), Venema, K. (author), Lyon, M.R. (author), Gahler, R.J. (author), Wood, S. (author)Many of the health benefits associated with dietary fiber are attributed to their fermentation by microbiota and production of short chain fatty acids (SCFA). The aim of this study was to investigate the fermentability of the functional fiber PolyGlyopleX® (PGX®) in vitro. A validated dynamic, computer-controlled in vitro system simulating the...article 2014
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TNO Kwaliteit van Leven (author), Klaassens, E.S. (author), Boesten, R.J. (author), Haarman, M. (author), Knol, J. (author), Schuren, F.H. (author), Vaughan, E.E. (author), Vos, W.M.de (author)Although their exact function remains enigmatic, bifidobacteria are among the first colonizers of the newborn infant gut and further develop into abundant communities, notably in response to diet. Therefore, the transcriptional responses of bifidobacteria in rapidly processed fecal samples from young infants that were fed either breast milk or a...article 2009
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van den Heuvel, E.G.H.M. (author), Muijs, T. (author), Brouns, F. (author), Hendriks, H.F.J. (author), TNO Kwaliteit van Leven (author)Consumption of fructo-oligosaccharides (FOS) has been shown to improve mineral absorption in the short term, but no long-term effects were studied in girls with a low calcium intake. Therefore, we hypothesized that short- and long-term consumption of short-chain FOS (sc-FOS) improves calcium and magnesium absorption in girls with a low habitual...article 2009
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Wang, Y. (author), Xu, H. (author), Wei, X. (author), Chai, C. (author), Xiao, Y. (author), Zhang, Y. (author), Chen, B. (author), Xiao, G. (author), Ouwerkerk, P.B.F. (author), Wang, M. (author), Zhu, Z. (author), TNO Kwaliteit van Leven (author)Monosaccharide transporters mediate the membrane transport of a variable range of monosaccharides, which plays a crucial role in sugar distribution throughout the plant. To investigate the significance of monosaccharide transporters for rice (Oryza sativa L.) seed development, cDNA of a new putative monosaccharide transporter gene OsMST4 was...article 2007
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Goosen, C. (author), Yuan, X.L. (author), van Munster, J.M. (author), Ram, A.F.J. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author), TNO Kwaliteit van Leven (author)A novel subfamily of putative intracellular invertase enzymes (glycoside hydrolase family 32) has previously been identified in fungal genomes. Here, we report phylogenetic, molecular, and biochemical characteristics of SucB, one of two novel intracellular invertases identified in Aspergillus niger. The sucB gene was expressed in Escherichia...article 2007
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Wijntje, R. (author), Bosch, H. (author), de Haan, A.B. (author), Bussmann, P.J.T. (author), TNO Kwaliteit van Leven TNO Bouw en Ondergrond (author)In prior work we studied the adsorption of triglycine on zeolite Y under reference conditions. This study aims to solve the question of which adsorbent properties and process conditions influence the adsorption triglycine from an aqueous solution by zeolite Y. Relevant zeolite parameters to study are: the amount of acidic sites (Si/Al2 ratio),...article 2007
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van der Werf, M.J. (author), Pieterse, B. (author), van Luijk, N. (author), Schuren, F. (author), van der Werff van der - Vat, B. (author), Overkamp, K. (author), Jellema, R.H. (author), TNO Kwaliteit van Leven (author)The value of the multivariate data analysis tools principal component analysis (PCA) and principal component discriminant analysis (PCDA) for prioritizing leads generated by microarrays was evaluated. To this end, Pseudomonas putida S12 was grown in independent triplicate fermentations on four different carbon sources, i.e. fructose, glucose,...article 2006
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Yuan, X.L. (author), Goosen, C. (author), Kools, H. (author), van der Maarel, M.J.E.C. (author), van den Hondel, C.A.M.J.J. (author), Dijkhuizen, L. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)As a soil fungus, Aspergillus niger can metabolize a wide variety of carbon sources, employing sets of enzymes able to degrade plant-derived polysaccharides. In this study the genome sequence of A. niger strain CBS 513.88 was surveyed, to analyse the gene/enzyme network involved in utilization of the plant storage polymer inulin, and of sucrose,...article 2006
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TNO Kwaliteit van Leven TNO Voeding (author), Ozimek, L.K. (author), Kralj, S. (author), Kaper, T. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author)Bacterial fructansucrase enzymes belong to glycoside hydrolase family 68 and catalyze transglycosylation reactions with sucrose, resulting in the synthesis of fructooligosaccharides and/or a fructan polymer. Significant differences in fructansucrase enzyme product specificities can be observed, i.e. in the type of polymer (levan or inulin)...article 2006
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Damveld, R.A. (author), Arentshorst, M. (author), Franken, A. (author), van Kuyk, P.A. (author), Klis, F.M. (author), van den Hondel, C.A.M.J.J. (author), Ram, A.F.J. (author), TNO Kwaliteit van Leven (author)In Aspergillus niger, the genes coding for glutamine:fructose-6-phosphate amidotransferase (gfaA) and α-1,3-glucan synthase (agsA) are induced in response to cell wall stress. In silico analysis of the promoter region of the two genes revealed the presence of putative DNA binding sites for transcription factors involved in stress responses,...article 2005
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Heijne, W.H.M. (author), Lamers, R.J.A.N. (author), van Bladeren, P.J. (author), Groten, J.P. (author), van Nesselrooij, J.H.J. (author), van Ommen, B. (author), TNO Kwaliteit van Leven (author)This study investigated whether integrated analysis of transcriptomics and metabolomics data increased the sensitivity of detection and provided new insight in the mechanisms of hepatotoxicity. Metabolite levels in plasma or urine were analyzed in relation to changes in hepatic gene expression in rats that received bromobenzene to induce acute...article 2005
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Venema, K. (author), Vermunt, S.H.F. (author), Brink, E.J. (author), TNO Kwaliteit van Leven (author)D-Tagatose is partly absorbed in the stomach and small intestine. Most of it is fermented by the large intestinal microbiota. The effect of D-tagatose on the composition of the microbiota and production of short chain fatty acids (SCFAs) was studied in vivo and in vitro. Gastrointestinal (GI) complaints were also studied. The in vivo study was...article 2005
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Broersen, K. (author), Voragen, A.G.J. (author), Hamer, R.J. (author), de Jongh, H.H.J. (author), TNO Voeding (author)In this article we show how various degrees of glycosylation can be used to control the thermal stability of proteins. The primary amines of β-lactoglobulin were glycosylated with glucose or fructose within a range of non-denaturing reaction parameters. The modified fractions were characterized and analyzed for structural stability and...article 2004
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Ram, A.F.J. (author), Arentshorst, M. (author), Damveld, R.A. (author), van Kuyk, P.A. (author), Klis, F.M. (author), van den Hondel, C.A.M.J.J. (author), TNO Voeding (author)Perturbation of cell wall synthesis in Saccharomyces cerevisiae, either by mutations in cell wall synthesis-related genes or by adding compounds that interfere with normal cell wall assembly, triggers a compensatory response to ensure cell wall integrity. This response includes an increase in chitin levels in the cell wall. Here it is shown that...article 2004
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van Hijum, S.A.F.T. (author), Szalowska, E. (author), van der Maarel, M.J.E.C. (author), Dijkhuizen, L. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author)Lactobacillus reuteri strain 121 employs a fructosyltransferase (FTF) to synthesize a fructose polymer [a fructan of the levan type, with β(2→6) linkages] from sucrose or raffinose. Purification of this FTF (a levansucrase), and identification of peptide amino acid sequences, allowed isolation of the first Lactobacillus levansucrase gene (lev),...article 2004
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Valencia, J.V. (author), Weldon, S.C. (author), Quinn, D. (author), Kiers, G.H. (author), de Groot, J. (author), TeKoppele, J.M. (author), Hughes, T.E. (author), Gaubius instituut TNO (author)Advanced glycation end products (AGEs) accumulate with age and at an accelerated rate in diabetes. AGEs bind cell-surface receptors including the receptor for advanced glycation end products (RAGE). The dependence of RAGE binding on specific biochemical characteristics of AGEs is currently unknown. Using standardized procedures and a variety of...article 2004
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Trofimova, D. (author), de Jongh, H.H.J. (author), TNO Voeding (author)Maillard products of β-lactoglobulin (βLg) and fructose oligosaccharide (FOS) were obtained in different degrees of modification depending on incubation time and pH. By use of a variety of biochemical and spectroscopic tools, it was demonstrated that the modification at limited degrees does not significantly affect the secondary, tertiary, and...article 2004
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van der Maarel, M.J.E.C. (author), van der Veen, B. (author), Uitdehaag, J.C.M. (author), Leemhuis, H. (author), Dijkhuizen, L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Starch is a major storage product of many economically important crops such as wheat, rice, maize, tapioca, and potato. A large-scale starch processing industry has emerged in the last century. In the past decades, we have seen a shift from the acid hydrolysis of starch to the use of starch-converting enzymes in the production of maltodextrin,...article 2002
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van Dokkum, W. (author), Wezendonk, B. (author), Srikumar, T.S. (author), van den Heuvel, E.G.H.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Objective: To study the effect of the intake of 15 g nondigestible oligosaccharides per day on various parameters of large-bowel function, as well as on blood lipid concentrations and glucose absorption in man. Design: Latin square, randomized, double-blind, diet-controlled. Setting: Metabolic research unit. Subjects: Twelve apparently healthy...article 1999
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