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Urinary Excretion of Cyanidin Glucosides and Glucuronides in Healthy Humans After Elderberry Juice Ingestion

Author(s): Bitsch Roland | Netzel Michael | Sonntag Susanne | Strass Gabriele | Frank Thomas | Bitsch Irmgard

Journal: Journal of Biomedicine and Biotechnology
ISSN 1110-7243

Volume: 2004;
Issue: 5;
Start page: 343;
Date: 2004;
Original page

In a pilot study with 6 females and 1 male, the metabolism of various cyanidin glucosides after oral administration of elderberry juice was investigated. The anthocyanin metabolites were detected in urinary excretion. After ingestion of a bolus quantity of 3.57 g total anthocyanins in a 150 mL elderberry juice concentrate, 0.053 % of the administered dose was excreted in urine as glucosidically bound cyanidins within the first 5 hours. Only 0.003 % of the ingested anthocyanin glucosides was excreted as cyanidin glucuronide, suggesting that this conversion step might be of minor importance in urinary excretion.
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