Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Quick screening of maize kernels for provitamin A content
Hulshof, P.J.M. ; Kosmeijer-Schuil, T. ; West, C.E. ; Hollman, P.C.H. - \ 2007
Journal of Food Composition and Analysis 20 (2007)8. - ISSN 0889-1575 - p. 655 - 661.
carotenoids - crops
Improving the micronutrient content of foods by bio-fortification is one of the strategies to alleviate micronutrient deficiencies. One of the target crops being bred for increased provitamin A content is maize. In order to estimate the success of these activities, we developed a quick screening method that allows distinction between low, medium and high levels of provitamin A carotenoids in maize by semi-quantitative analysis. Carotenoids in 13 lines of maize were extracted with acetone/hexane and carotenes and monohydroxy carotenoids were separated on a de-activated alumina column. The two fractions were quantified separately by absorption at 450 nm. Regression lines were constructed between the spectrophotometrically determined carotenoids in the fractions and the amount of retinol equivalents (RE) determined by HPLC in the full extract. Total carotene (¿g/100 g)=7.62 RE+176; r=0.97, P
Verwaarloosbare hoeveelheden cholesterolverhogende diterpenen in koffie gezet met de koffiepadzetmethode bij vergelijking met ongefilterde kookkoffie=Negligible amounts of cholesterol-raising diterpenes in coffee made with coffee pads in comparison with unfiltered coffee
Boekschoten, M.V. ; Cruchten, S.T.J. van; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 2006
Nederlands Tijdschrift voor Geneeskunde 150 (2006)52. - ISSN 0028-2162 - p. 2873 - 2875.
diterpenen - koffie - cholesterol - koffiezetapparaten - risicoschatting - gezondheid - diterpenes - coffee - coffeemakers - risk assessment - health
The objective of this research was to determine the amounts of the serum-cholesterol raising diterpenes cafestol and kahweol in coffee made with coffee pads and the Senseo coffee machine as opposed to filtered and unfiltered coffee
Food analyses of the Department of Human Nutrition.
Hulshof, P.J.M. ; Zock, P.L. ; Kosmeijer-Schuil, J.G. - \ 1998
In: Edible fats, baked goods and snacks
Daling transvetzuren, maar niet in alle grootverbruikproducten: vetzuursamenstelling van spijsvetten, koek en snacks.
Hulshof, P.J.M. ; Zock, P.L. ; Kosmeijer-Schuil, J.G. ; Bovenkamp, P. van de; Katan, M.B. - \ 1998
Voeding 59 (1998)5. - ISSN 0042-7926 - p. 24 - 27.
vetzuren - carbonzuren - vetten - oliën - bakoliën - bakvetten - zoetwaren - biscuits - fabricage - cakes - snacks - maaltijden - voedingsmiddelen - chemische samenstelling - voeding - oleïnezuur - onverzadigde vetzuren - acrylzuur - volksgezondheid - gezondheidszorg - spijsoliën - spijsvetten - fatty acids - carboxylic acids - fats - oils - cooking oils - cooking fats - confectionery - manufacture - meals - foods - chemical composition - nutrition - oleic acid - unsaturated fatty acids - acrylic acid - public health - health care - edible oils - edible fats
Deze vetzuren hebben een ongunstige invloed op het lipoproteineprofiel in het bloed. In een tabel is de vetzuursamenstelling van geselecteerde koek en snacks weergegeven. Tegenwoordig bevatten de margarines, bak- en braadvetten aanzienlijk minder verzadigd vet
Absorption and urinary excretion of the coffee diterpenes cafestol and kahweol in healthy ileostomy volunteers.
Roos, B. de; Meyboom, S. ; Kosmeijer-Schuil, T.G. ; Katan, M.B. - \ 1998
Journal of Internal Medicine 244 (1998). - ISSN 0954-6820 - p. 451 - 460.
Analysis of C18:1 cis and trans fatty acid isomers by the combination of gas-liquid chromatography of 4,4-dimethyloxazoline derivatives and methylesters.
Aro, A. ; Kosmeijer-Schuil, J.G. ; Bovenkamp, P. van de; Hulshof, P.J.M. ; Zock, P.L. ; Katan, M.B. - \ 1998
Journal of the American Oil Chemists Society 75 (1998). - ISSN 0003-021X - p. 977 - 985.
Separate effects of the coffee diterpenes cafestol and kahweol on serum lipids and liver transaminases.
Urgert, R. ; Essed, N. ; Weg, G. van der; Kosmeijer-Schuil, T.G. ; Katan, M.B. - \ 1997
American Journal of Clinical Nutrition 65 (1997). - ISSN 0002-9165 - p. 519 - 524.
The coffee diterpene cafestol occurs in both robusta and arabica beans. It is present in unfiltered coffee brews and raises serum concentrations of cholesterol, triacylglycerols, and alanine aminotransferase in humans. The effects are linear with the cafestol dose. Unfiltered coffee also contains the related compound kahweol, which occurs only in the major coffee strain arabica. The activity of kahweol is unknown. In a randomized, double-blind crossover study, we gave 10 healthy male volunteers either pure cafestol (61-64 mg/d) or a mixture of cafestol (60 mg/d) and kahweol (48-54 mg/d) for 28 d. Relative to baseline values, cafestol raised mean ( /-SEM) total serum cholesterol concentrations by 0.79 /- 0.14 mmol/L (31 /- 5 mg/dL), low-density-lipoprotein (LDL) cholesterol by 0.57 /- 0.13 mmol/L (22 /- 5 mg/dL), fasting triacy-glycerols by 0.65 /- 0.12 mmol/L (58 /- 11 mg/dL), and alanine aminotransferase by 18 /- 2 U/L (all P < 0.01). Relative to cafestol alone, the mixture of cafestol plus kahweol increased total cholesterol by another 0.23 /- 0.16 mmol/L (9 /- 6 mg/dL) (P = 0.08), LDL cholesterol by 0.23 /- 0.16 mmol/L (9 /- 6 mg/dL) (P = 0.09), triacylglycerols by 0.09 /- 0.10 mmol/L (8 /- 9 mg/dL) (P = 0.20), and alanine aminotransferase by 35 /- 11 U/L (P = 0.004). Thus, the effect of cafestol on serum lipid concentrations was much larger than the additional effect of kahweol, and the hyperlipidemic potential of unfiltered coffee mainly depends on its cafestol content. Both cafestol and kahweol raised alanine aminotransferase concentrations, and their hyperlipidemic effect thus seems not to be coupled with their effect on liver cells.
Absorption and metabolism of the cholesterol-raising coffee diterpenes cafestol and kahweol in healthy ileostomy volunteers.
Roos, B. de; Meyboom, S. ; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 1997
Atherosclerosis 134 (1997)1-2. - ISSN 0021-9150 - p. 29 - 29.
Absorptie en metabolisme van de cholesterolverhogende koffiediterpenen cafestol en kahweol.
Roos, B. de; Meyboom, S. ; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 1997
Voeding 58 (1997)6. - ISSN 0042-7926 - p. 27 - 28.
Intake levels, sites of action and excretion routes of the cholesterol-elevating diterpenes from coffee beans in humans.
Urgert, R. ; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 1996
Biochemical Society Transactions 24 (1996). - ISSN 0300-5127 - p. 800 - 806.
Het gehalte van de serumcholesterolverhogende diterpenen cafestol en kawheol in verschillende koffiedranken.
Urgert, R. ; Weg, G. van der; Kosmeijer-Schuil, T. ; Bovenkamp, P. van de; Hovenier, R. ; Katan, M. - \ 1995
Voeding 56 (1995)5. - ISSN 0042-7926 - p. 32 - 32.
Levels of the cholesterol-elevating diterpenes cafestol and kawheol in various coffee brews.
Urgert, R. ; Weg, G. van der; Kosmeijer-Schuil, T.G. ; Bovenkamp, P. van de; Hovenier, R. ; Katan, M.B. - \ 1995
Journal of Agricultural and Food Chemistry 43 (1995). - ISSN 0021-8561 - p. 2167 - 2172.
In vivo oxidized cholesterol in atherosclerosis. Letter to the editors.
Stalenhoef, A.F.H. ; Kleinveld, H.A. ; Kosmeijer-Schuil, T.G. ; Demacker, P.N.M. ; Katan, M.B. - \ 1993
Atherosclerosis 98 (1993). - ISSN 0021-9150 - p. 113 - 114.
Voedingsmiddelenanalyses van de Vakgroep Humane Voeding. Deel 11 Spijsvetten en oliën
Hulshof, P.J.M. ; Bovenkamp, P. van de; Boogerd, L. ; Bos, J. ; Germing-Nouwen, C. ; Kosmeijer-Schuil, T. ; Hollman, P.C.H. ; Katan, M.B. - \ 1991
Unknown Publisher
voedingsmiddelen - chemische samenstelling - vetten - oliën - bakoliën - bakvetten - boter - margarine - voedingswaarde - voedsel - voedselsamenstelling - kwaliteit - eigenschappen - huishoudens - ziekenhuizen - ziekenhuiscatering - verpleeghuizen - ingrediënten - dierlijke producten - ghana - filippijnen - spijsoliën - spijsvetten - institutionele huishoudens - foods - chemical composition - fats - oils - cooking oils - cooking fats - butter - nutritive value - food - food composition - quality - properties - households - hospitals - hospital catering - nursing homes - ingredients - animal products - philippines - edible oils - edible fats - institutional households
Voedingsmiddelenanalyses van de Vakgroep Humane Voeding. Deel 11A Spijsvetten en oliën : achtergrondcijfers
Hulshof, P.J.M. ; Bovenkamp, P. van de; Boogerd, L. ; Bos, J. ; Germing-Nouwen, C. ; Kosmeijer-Schuil, T. ; Katan, M.B. - \ 1990
Unknown Publisher
voedingsmiddelen - chemische samenstelling - vetten - oliën - bakoliën - bakvetten - boter - margarine - voedingswaarde - voedsel - voedselsamenstelling - kwaliteit - eigenschappen - huishoudens - ziekenhuizen - ziekenhuiscatering - verpleeghuizen - ingrediënten - dierlijke producten - ghana - filippijnen - spijsoliën - spijsvetten - institutionele huishoudens - foods - chemical composition - fats - oils - cooking oils - cooking fats - butter - nutritive value - food - food composition - quality - properties - households - hospitals - hospital catering - nursing homes - ingredients - animal products - philippines - edible oils - edible fats - institutional households
Quantification of oxysterols in Dutch foods: Egg products and mixed diets.
Bovenkamp, P. van de; Kosmeijer-Schuil, T.G. ; Katan, M.B. - \ 1988
Lipids 23 (1988). - ISSN 0024-4201 - p. 1079 - 1085.
Voedingsmiddelenanalyses van de Vakgroep Humane Voeding. Deel VII Maaltijden en produkten.
Bovenkamp, P. van de; Bos, J. ; Germing-Nouwen, C. ; Kosmeijer-Schuil, T. ; Willems, M. ; Zijlmans, A. ; Katan, M.B. - \ 1987
Wageningen : Vakgroep Humane Voeding, Landbouwuniversiteit - ISBN 9789072407092 - 119
voedingsmiddelen - chemische samenstelling - vetten - oliën - bakoliën - bakvetten - boter - margarine - voedingswaarde - voedsel - voedselsamenstelling - kwaliteit - eigenschappen - huishoudens - ziekenhuizen - ziekenhuiscatering - verpleeghuizen - dierlijke producten - ingrediënten - ghana - filippijnen - spijsoliën - spijsvetten - institutionele huishoudens - foods - chemical composition - fats - oils - cooking oils - cooking fats - butter - nutritive value - food - food composition - quality - properties - households - hospitals - hospital catering - nursing homes - animal products - ingredients - philippines - edible oils - edible fats - institutional households
Voedingsmiddelenanalyses van de Vakgroep Humane Voeding. Deel 6 Zout- en vetgehalte van sauzen, kruiden, vleeswaren en andere producten.
Bovenkamp, P. van de; Katan, M.B. ; Folmer, P. ; Rutten, F. ; Bos, J. ; Germing-Nouwen, C. ; Kosmeijer-Schuil, T. ; Brussaard, J.H. - \ 1987
Wageningen : Vakgroep Humane Voeding, Landbouwuniversiteit - ISBN 9789072407061 - 96
voedingsmiddelen - chemische samenstelling - vetten - oliën - bakoliën - bakvetten - boter - margarine - voedingswaarde - voedsel - voedselsamenstelling - kwaliteit - eigenschappen - huishoudens - ziekenhuizen - ziekenhuiscatering - verpleeghuizen - dierlijke producten - ingrediënten - ghana - filippijnen - spijsoliën - spijsvetten - institutionele huishoudens - foods - chemical composition - fats - oils - cooking oils - cooking fats - butter - nutritive value - food - food composition - quality - properties - households - hospitals - hospital catering - nursing homes - animal products - ingredients - philippines - edible oils - edible fats - institutional households
Assay of cholesterol oxidation products in foods
Bovenkamp, P. van de; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 1985
CVD epidemiology newsletter 38 (1985). - p. 62 - 62.
Voedingsmiddelenanalyses van de Vakgroep Humane Voeding. Deel 3 Nutrient composition of 167 food items from Ghana, The Philippines, Italy and Finland
Westenbrink, S. ; Knuiman, J.T. ; West, C.E. ; Heijden, L. van der; Bovenkamp, P. van de; Koot-Gronsveld, E.A.M. ; Kosmeijer-Schuil, J.G. ; Katan, M.B. - \ 1983
Unknown Publisher
voedingsmiddelen - chemische samenstelling - vetten - oliën - bakoliën - bakvetten - boter - margarine - voedingswaarde - voedsel - voedselsamenstelling - kwaliteit - eigenschappen - huishoudens - ziekenhuizen - ziekenhuiscatering - verpleeghuizen - dierlijke producten - ingrediënten - ghana - filippijnen - spijsoliën - spijsvetten - institutionele huishoudens - foods - chemical composition - fats - oils - cooking oils - cooking fats - butter - nutritive value - food - food composition - quality - properties - households - hospitals - hospital catering - nursing homes - animal products - ingredients - philippines - edible oils - edible fats - institutional households
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