PMID: 18400704Apr 11, 2008Paper

Alkylresorcinols as biomarkers of whole-grain wheat and rye intake: plasma concentration and intake estimated from dietary records

The American Journal of Clinical Nutrition
Rikard LandbergPer Aman

Abstract

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. 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. 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. 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). 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.

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Citations

Jul 11, 2009·Beilstein Journal of Organic Chemistry·Kirsti Parikka, Kristiina Wähälä
May 27, 2010·European Journal of Clinical Nutrition·J MontonenT Pischon
Oct 24, 2009·The British Journal of Nutrition·Cristina Andres-Lacueva, Raul Zamora-Ros
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