title: Urinary Excretion of Cyanidin Glucosides and Glucuronides in Healthy Humans After Elderberry Juice Ingestion.
abstract: 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.
authors.forename: Roland
authors.initials: R
authors.lastname: Bitsch
authors.forename: Michael
authors.initials: M
authors.lastname: Netzel
authors.forename: Susanne
authors.initials: S
authors.lastname: Sonntag
authors.forename: Gabriele
authors.initials: G
authors.lastname: Strass
authors.forename: Thomas
authors.initials: T
authors.lastname: Frank
authors.forename: Irmgard
authors.initials: I
authors.lastname: Bitsch