Abstract
ABSTRACT: The anthocyanin pigments in 51 blackberry samples were isolated and characterized by highperformance liquid chromatography (HPLC) with UV-visible detection, electrospray mass spectroscopy (ESMS), and hydrolysis and saponification reactions. Five pigments were detected: cyanidin-3-glucoside, cyanidin-3-rutinoside, cyanidin-3-xyloside, cyanidin-3-glucoside acylated with malonic acid, and an unidentified acylated derivative of cyanidin-3-glucoside. Four different quantitative patterns were evident among the cultivars and selections. Total anthocyanin content ranged from 70.3 to 201 mg/100 g with a mean of 137 mg/100 g. Ten commercial blackberry juice concentrate samples were analyzed. Total anthocyanin ranged from 12.3 to 107 mg/100 g on a single-strength juice basis, and 1 sample had an atypical profile.
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