Landberg, Rikard
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Abstract
Background: Alkylresorcinols (ARs), phenolic lipids exclusively present in the outer parts of wheat and rye grains, have been proposed as specific dietary biomarkers of whole-grain wheat and rye intake.Objective: The objective was to validate plasma ARs as a biomarker of whole-grain wheat and rye intakes by studying the correlation between their plasma concentration and intake calculated from food records.Design: In a randomized crossover study, 22 women and 8 men were given a defined amount of either whole-grain or refined-cereal-grain products to be included in their habitual diets for two 6-wk periods. Blood samples were collected and food intakes were recorded before and after each intervention period.Results: Plasma AR concentrations were significantly higher after the whole-grain diet period than after the refined-grain period (P < 0.0001) and were well correlated with average daily AR intake estimated by self-reported weighed food records (Spearman's r = 0.58, P < 0.001).Conclusion: Plasma AR concentrations are correlated with intake assessed by food records, which suggests that ARs are selective nutritional biomarkers for the intake of whole-grain wheat and rye.
Published in
American Journal of Clinical Nutrition
2008, volume: 87, number: 4, pages: 832-838
Publisher: AMER SOC CLINICAL NUTRITION
SLU Authors
Kamal-Eldin, Afaf
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
Åman, Per
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
- Department of Molecular Sciences, Swedish University of Agricultural Sciences
UKÄ Subject classification
Food Science
Publication identifier
- DOI: https://doi.org/10.1093/ajcn/87.4.832
Permanent link to this page (URI)
https://res.slu.se/id/publ/18026