Determination of acylated anthocyanin in human urine after ingesting a purple-fleshed sweet potato beverage with various contents of anthocyanin by LC-ESI-MS/MS

Abstract

Eighty-seven healthy volunteers ingested a purple-fleshed sweet potato beverage with various contents of anthocyanin (beverage A; 22.1 mg/250 ml, B; 107.8, C; 84.9). An acylated anthocyanin, peonidin 3-caffeoylsophoroside-5- glucoside, was detected in the urine 2 h after ingestion. The concentrations were 15:1 ± 2:2 μg/l of urine (mean ± SEM), 46:6 ± 5:3, and 53:3 ± 2:2 for beverages A, B, and C respectively.