Anthocyanin Metabolites Are Abundant and Persistent in Human Urine
文献类型: 外文期刊
第一作者: Kalt, Wilhelmina
作者: Kalt, Wilhelmina;McDonald, Jane E.;Vinqvist-Tymchuk, Melinda R.;Fillmore, Sherry A. E.;Liu, Yan
作者机构:
关键词: bioavailability;chalcone;colonic metabolism;enterohepatic;LC-MS
期刊名称:JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY ( 影响因子:5.279; 五年影响因子:5.269 )
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年卷期:
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收录情况: SCI
摘要: LC-MS/MS revealed that metabolites of anthocyanins (Acn) were abundant in human urine (n = 17) even after 5 days with no dietary Acn. After intake of 250 mL of blueberry juice, parent Acn were 4% and Acn metabolites were 96% of the total urinaiy Acn for the following 24 h. Multiple reaction monitoring revealed 226 combinations of mass transition X retention times for known Acn and predicted Acn metabolites. These were dominated by aglycones, especially aglycone glucuronides. The diversity of Acn metabolites could include positional isomers of Acn conjugates and chalcones. The persistence of Acn metabolites suggested enterohepatic recycling leading to prolonged residence time. The prevalence of Acn metabolites based on pelargonidin, which is. not present in blueberry juice, may reflect ongoing dehydroxylation and demethylation of other Acn via xenobiotic and colonic bacterial action. The results suggest that exposure to Acn-based flavonoid moieties is substantially greater than suggested by earlier research.
分类号: R15`S
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