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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
document
van Dokkum, W. (author), de Vos, R.H. (author), Muys, Th. (author), Wesstra, J.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
1. During a period of 2.5 years, every 3 months 221 different food items forming a 'market basket' were purchased, prepared and divided into twenty-three food-commodity groups. The 'market basket' was based on a study of the dietary intake of 18-year-old male, Dutch adolescents. In the (homogenized) food groups various minerals and trace...
article 1989
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van Dokkum, W. (author), Wesstra, A. (author), Luyken, R. (author), Hermus, R.J.J. (author), Instituut CIVO-Toxicologie en voeding TNO (author)
Twelve young men were given for periods of 20 d, each of three mixed diets, namely a low-protein (LP) diet (9% total energy as protein, 67% of animal origin), a high-animal-protein (HA) diet (16% total energy as protein, 67% of animal origin) and a high-vegetable-protein (HV) diet (16% total energy as protein, 67% of vegetable origin). Retention...
article 1986
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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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de Vos, R.H. (author), van Dokkum, W. (author), Schouten, A. (author), Jong de -Berkhout, P. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Over a period of 2.5 yr, 221 different food items of a 'market basket' of 18-yr-old males were purchased every 3 months. In total, 10 market baskets were collected. The foodstuffs were prepared by normal methods and combined into 23 commodity groups. Homogenates were prepared from each commodity group, followed by analysis for 17 different...
article 1990
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Schaafsma, G. (author), Meuling, W.J.A. (author), van Dokkum, W. (author), Bouley, C. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Objective: To investigate in adult male volunteers the effect of a new fermented milk product, fermented by Lactobacillus acidophilus and with fructo-oligosaccharides added, on blood lipids. Design: Randomized placebo-controlled double-blind two-way cross over trial with two treatment periods of three weeks, separated by a wash-out period of one...
article 1998
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Pikaar, N.A. (author), Wedel, M. (author), van der Beek, E.J. (author), van Dokkum, W. (author), Kempen, H.J.M. (author), Kluft, C. (author), Ockhuizen, T. (author), Hermus, R.J.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
To investigate the effect of moderate alcohol consumption on blood constituents related to cardiovascular disease, 12 male volunteers consumed (instead of their usual alcoholic drinks) four different standardized amounts of red wine in addition to their habitual diet. Each dose was given to the subjects during a period of 5 weeks in a randomized...
article 1987
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Torre H.W., van der (author), van Dokkum, W. (author), Schaafsma, G. (author), Wedel, M. (author), Ockhuizen, T. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
After a 5-week period of low selenium intake, twenty-four Dutch men received 55, 135 or 215 μg Se/d as Se-rich meat or bread for a 9-week period. Four unsupplemented subjects served as controls. Plasma Se increased more rapidly than erythrocyte Se levels; the increases were significantly dependent (P < 0.001) on Se intake level. Glutathione...
article 1991
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van Dokkum, W. (author), Schrijver, J. (author), Wesstra, J.A. (author), Instituut CIVO-Toxicologie en Voeding TNO (author)
The biological variability of the values of various biochemical indices used for the assessment of the nutritional status of man was investigated in 4 healthy male volunteers (mean age 23 years). They were given a constant diet for 60 d, with the nutrient intake at the level of the Dutch recommendations. Blood was collected twice a week and 24-h...
article 1990
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van den Heuvel, E.G.H.M. (author), Muys, T. (author), van Dokkum, W. (author), Schaafsma, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Background: In rats, nondigestible oligosaccharides stimulate calcium absorption. Recently, this effect was also found in human subjects. Objective: The objective of the study was to investigate whether consumption of 15 g oligofructose/d stimulates calcium absorption in male adolescents. Design: Twelve healthy, male adolescents aged 14-16 y...
article 1999
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van Dokkum, W. (author), de Boer, B.C.J. (author), van Faassen, A. (author), Pikaar, N.A. (author), Hermus, R.J.J. (author), Instituut CIVO-Toxicologie en voeding TNO (author)
We suggest that a lower faecal pH may be correlated with a lower mortality of large-bowel cancer and that faecal pH should always be considered in epidemiological studies on the role of diet in colon carcinogenesis.
article 1983
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