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Centraal Instituut voor Voedingsonderzoek TNO (author), Olsman, W.J. (author)
Soy protein is the vegetable protein that is most frequently used in meat products. Accordingly, detection and determination procedures have mainly been focused on soy proteins. Cereal proteins received far less attention analytically, let alone the less conventional vegetable proteins. Every method published has only a limited applicability,...
article 1979
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Speek, A.J. (author), van Schaik, F. (author), Schrijver, J. (author), Schreurs, W.H.P. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
A reliable high-performance liquid chromatographic (HPLC) method is developed for the analysis of FAD in whole blood of humans. The method is able to separate FAD, FMN and Rb from each other and from interfering compounds. A reliable and sensitive detection of FAD has been obtained by selecting the optimal pH of the mobile phase and optimal...
article 1982
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Kroes, R. (author), Instituut CIVO-Toxicologie en voeding TNO (author)
Short-term tests designed to detect possible carcinogenicity have been extensively refined during the last years. Presently, many more or less simple and convenient systems are available to detect mutations, chromosome effects, DNA damage, and malignant transformation. Although their relevance to carcinogenicity is often reasonably good,...
article 1983
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Reuzel, P.G.J. (author), Feron, V.J. (author), Spit, B.J. (author), Beems, R.B. (author), Kroes, R. (author), Instituut CIVO-Toxicologie en voeding TNO (author)
Cofactors involved in respiratory tract carcinogenesis were studied in Syrian golden hamster or in rats using benzo(a)pyrene as the carcinogenic agent. These factors included severe tissue tissue damage induced by electro-coagulation, glass fibers administered by intratracheal instillation, acetaldehyde as irritant vapor, food restriction, and...
article 1983
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van Eeden, C.H. (author), de Jong, A.W.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The well-known Kroller method for the determination of cyanide requires the use of the harmful chemicals benzidine (carcinogenic) and bromine (toxic) in the colorimetric part; the analytical result depends strongly on the conduct of the liberation procedure. The substitution of barbituric acid and N-chlorosuccinimide for benzidine and bromine...
article 1985
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van den Berg, H. (author), Louwerse, E.S. (author), Bruinse, H.W. (author), Thissen, J.T.N.M. (author), Schrijver, J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The vitamin B6 status of women suffering from premenstrual symptoms (PMS, n = 19) and a group of matched controls (n = 19) has been investigated. The women volunteering in the study were selected on strictly defined criteria. Several biochemical parameters of the metabolism of vitamin B6 and tryptophan were studied in blood and urine samples...
article 1986
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Zwart, A. (author), Arts, J.H.E. (author), ten Berge, W.F. (author), Appelman, L.M. (author)
A new design for acute inhalation toxicity testing was evaluated and compared with results obtained according to OECD guideline 403. The new design consists of a range-finding test, which is compatible with a conventional limit test, and can be followed by determination of a concentration-time-mortality relationship, enabling calculation of LC50...
article 1992
document
te Koppele, J.M. (author), 't Hart, B.A. (author), Gaubius Instituut TNO (author)
article 1995
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van Nistelrooy, J.G.M. (author), van den Brink, J.M. (author), van Kan, J.A.L. (author), van Gorcom, R.F.M. (author), de Waard, M.A. (author), Prins Maurits Laboratorium TNO (author)
The CYP51 gene encoding eburicol 14α-demethylase (P450(14DM)) was cloned from a genomic library of the filamentous fungal plant pathogen Penicillium italicum, by heterologous hybridisation with the corresponding gene encoding lanosterol 14α-demethylase from the yeast Candida tropicalis. The nucleotide sequence of a 1739-bp genomic fragment and...
article 1996
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Zhu, Y. (author), Knol, W. (author), Smits, J.P. (author), Bol, J. (author), TNO Voeding (author)
A solid-state fermentation system, using polyurethane foam as an inert carrier, was used for the production of nuclease P1 by Penicillium citrinum. Optimization of nuclease P1 production was carried out using a synthetic liquid medium. After a two-step medium optimization using a fractional factorial experimental design, nuclease P1 productivity...
article 1996
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Jespersen, S. (author), Koedam, J.A. (author), Hoogerbrugge, C.M. (author), Tjaden, U.R. (author), van der Greef, J. (author), van den Brande, J.L. (author), TNO Voeding (author)
High molecular weight precursors of insulin-like growth factor II (IGF-II) were isolated from Cohn fraction IV of human plasma by ultrafiltration, affinity chromatography and reversed-phase high-performance liquid chromatography. Molecular weight determination by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) of two...
article 1996
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Rijnkels, J.M. (author), Hollanders, V.M.H. (author), Woutersen, R.A. (author), Koeman, J.H. (author), Alink, G.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The potential inhibitory effects of a vegetables-fruit mixture on the initiation and promotion phases of azoxymethane-induced colorectal carcinogenesis were examined in rats fed low- or high-fat diets. Rats were fed low-fat diets (20 energy percent, Diets A and B) or high-fat diets (40 energy percent, Diets C and D), supplemented with a...
article 1998
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Korst, A.E.C. (author), Boven, E. (author), van der Sterre, M.L.T. (author), Fichtinger-Schepman, A.M.J. (author), van der Vijgh, W.J.F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Amifostine (Ethyol, WR-2721) is in use in the clinic as a protector against platinum-induced toxicities. We have previously reported that amifostine induced a potentiation of the antitumour activity of carboplatin in human ovarian cancer xenografts. An influence of amifostine on the pharmacokinetics of carboplatin, resulting in higher platinum...
article 1998
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Löwik, M.R.H. (author), Hulshof, K.F.A.M. (author), van der Heijden, L.J.M. (author), Brussaard, J.H. (author), Burema, J. (author), Kistemaker, C. (author), de Vries, P.J.F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
From April 1987-March 1988, the first Dutch National Food Consumption Survey (DNFCS) was carried out among 2203 households comprising 5898 subjects, aged 1-85. In 1992 (January-December) the second DNFCS was conducted among 6218 subjects, aged 1-92 belonging to 2475 households. In both surveys, among other things, information on individual food...
article 1998
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Noort, D. (author), Hulst, A.G. (author), Platenburg, D.H.J.M. (author), Polhuijs, M. (author), Benschop, H.P. (author), Prins Maurits Laboratorium TNO (author)
A convenient and rapid micro-anion exchange liquid chromatography (LC) tandem electrospray mass spectrometry (MS) procedure was developed for quantitative analysis in serum of O-isopropyl methylphosphonic acid (IMPA), the hydrolysis product of the nerve agent sarin. The mass spectrometric procedure involves negative or positive ion electrospray...
article 1998
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Salomons, E.M. (author), Technisch Physische Dienst TNO - TH (author)
The numerical implementation of the Green's function parabolic equation (GFPE) method for atmospheric sound propagation is discussed. Four types of numerical errors are distinguished: (i) errors in the forward Fourier transform; (ii) errors in the inverse Fourier transform; (iii) errors in the refraction factor; and (iv) errors caused by the...
article 1998
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Knippels, L.M.J. (author), Penninks, A.H. (author), Spanhaak, S. (author), Houben, G.F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Background: Although several in vivo antigenicity assays using parenteral immunization are operational, no adequate enteral sensitization models are available to study food allergy and allergenicity of food proteins. Objective: This paper describes the development of an enteral model for food allergy research in the Brown Norway (BN) rat....
article 1998
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van Puymbroeck, M. (author), Kuilman, M.E.M. (author), Maas, R.F.M. (author), Witkamp, R.F. (author), Leyssens, L. (author), van Miert, A.S.J.P.A.M. (author), Hendriks, L. (author), van der Zande, D.J.M. (author), Adriaensens, P. (author), Jacobs, M.-P. (author), Raus, J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The metabolism of the illegal growth promoter ethylestrenol (EES) was evaluated in bovine liver cells and subcellular fractions of bovine liver preparations. Incubations with bovine microsomal preparations revealed that EES is extensively biotransformed into norethandrolone (NE), another illegal growth promoter. Furthermore, incubations of...
article 1999
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Whittaker, M.H. (author), Frankos, V.H. (author), Wolterbeek, A.P.M. (author), Waalkens-Berendsen, D.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Plant stanol esters are intended for use as an ingredient in food to reduce the absorption of cholesterol from the gastrointestinal tract. Consumption of plant stanol esters has a demonstrated diet-derived public health benefit, as shown by numerous clinical studies. Plant stanol esters are ring-saturated analogs of common dietary sterols that...
article 1999
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Trap, H.C. (author), Langenberg, J.P. (author), Department of Chemical Toxicology, TNO Prins Maurits Laboratory, P.O. Box 45, 2280 AA, Rijswijk, Netherlands (author)
A method is presented for the continuous analysis of generated vapors of the nerve agents soman and satin and the blistering agent sulfur mustard. By using a gas sampling valve and a very short (15 cm) column connected to an on-column injector with a 'standard length' column, the system can either be calibrated or used for performing high speed...
article 1999
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