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de Vos, R.H. (author), van Dokkum, W. (author), Olthof, P.D.A. (author), Quirijns, J.K. (author), Muys, T. (author), van der Poll, J.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Over a period of 2 yr 126 different food items of a market basket of 16-18 yr old males were purchased every 2 months. The foodstuffs were prepared as for eating, and were combined in 12 commodity groups. Twelves samples of each food group were homogenized and analysed for 78 different chemicals, including pesticides, PCBs, bromine, heavy metals...article 1984
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- Centraal Instituut voor Voedingsonderzoek TNO (author), van Dokkum, W. (author) doctoral thesis 1984
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de Kruijf, N. (author), Rijk, M.A.H. (author), Soetardhi, L.A. (author), Rossi, L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)A study was carried out to establish whether the draft EEC method for determining overall (global) migration of the constituents of plastics-packaging materials into a fatty-food simulant could be applied to samples of commercially available homogeneous plastics materials and whether it would be possible to use extraction with a volatile solvent...article 1983
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Luten, J.B. (author), Riekwel Booy, G. (author), van der Greef, J. (author), de Noever ten - Brauw, M.C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Organo-arsenic has been isolated from sole, lemon sole, flounder, dab, crab and shrimps by extraction or ion-exchange in combination with thin-layer chromatography. An alkaline digestion of the samples, followed by a reduction with sodiumborohydride leads to the formation of trimethylarsine. The behaviour of the organo-arsenic compound was very...article 1983
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Bemelmans, J.M.H. (author), den Braber, H.J.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Marinated herring from the Baltic Sea was found to have an offensive odor and taste described as iodine-like and phenolic. Fat isolated from herring was found to contain this taint. The volatiles were isolated from the fat, using a molecular distillation and were subsequently fractionated by gas chromatography. A fraction containing the taint...conference paper 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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- Instituut CIVO-Toxicologie en voeding TNO Instituut voor Wiskunde, Informatieverwerking en Statistiek TNO (author), van Dokkum, W. (author), Pikaar, N.A. (author), Thissen, J.T.N.M. (author) article 1983
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- Centraal instituut voor voedingsonderzoek TNO (author), van den Berg, H. (author), Bruinse, H.W. (author) doctoral thesis 1983
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- Tollenaar, F.D. (author), Centraal Instituut voor Voedingsonderzoek TNO (author) article 1982
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van Battum, D. (author), Rijk, M.A.H. (author), Verspoor, R. (author), Rossi, L. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)An experimental study was carried out to establish whether the draft EEC method for the determination of the global migration of constituents from plastics packaging materials into fatty food stimulants could be applied to all plastics, including lacquers and laminates. Some difficulties were encountered in the use of the EEC method for melamine...article 1982
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- Centraal Instituut voor Voedingsonderzoek TNO (author), van Dokkum, W. (author), Wesstra, A. (author), Schippers, F.A. (author) article 1982
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Centraal Instituut voor Voedingsonderzoek TNO (author), van Dokkum, W. (author), de Vos, R.H. (author), Cloughley, F.A. (author), Hulshof, K.F.A.M. (author), Dukel, F. (author), Wijsman, J.A. (author)During a period of 2 years, every 2 months 126 different food items forming a 'market basket' were purchased, prepared and divided into twelve food commodity groups. The 'market basket' was based on a study of the dietary pattern of 16- to 18-year-old male adolescents. In the (homogenized) food group various additives and components of...article 1982
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Wijsman, J.A. (author), Hilwig, G.N.G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Es wurde untersucht, ob die Analyse von Glycerinäthern — eine in sehr geringer Menge im Unverseifbaren von Schweine‐und Rindsfett vorkommende Gruppe von Verbindungen — Perspektiven bei der Reinheitsbestimmung dieser Fette bietet. Dazu wurden eine “Mikro”‐Isolation und ein “Mikro”‐Analysenverfahren entwickelt, wobei die Möglichkeit besteht, die...article 1981
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- van Battum, D. (author), Centraal instituut voor voedingsonderzoek TNO (author) article 1978
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- Leegwater, D.C. (author) article 1978
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Haagsma, N. (author), Slump, P. (author), Gortemaker, B. (author), Schreuder, R. (author), Centraal instituut voor voedingsonderzoek TNO (author)A comparison is made between lysinoalanine (LAL) determinations both with an automatic amino acid analyzer (AAA) and with thin layer chromatography-densitometry (TLC) in different types of food and food ingredients, taken from the Dutch market. Generally there is a reasonable agreement between the LAL content obtained by both methods. However,...article 1978
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Wijsman, J.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The investigation in question deals with the iron contamination in cocoa and chocolate products. Semi finished goods as well as finished products were examined. An average of 29 mg/kg total iron (i.e. ionic + metallic iron) was found in cocoabeans. The iron content of cocoa shells was approximately 10 fold higher. The process of grinding roasted...article 1978
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- conference paper 1978
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- Centraal Instituut voor Voedingsonderzoek TNO (author), Nicolas, E. (author) book 1977
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- Instituut voor Visserijprodukten TNO (author), van Spreekens, K.J.A. (author) article 1977