Polyphenol and vitamin C contents in European commercial blackcurrant juice products

► Polyphenol content in the European blackcurrant juices was studied extensively. ► Advanced methods were used for various polyphenol compounds. ► Polyphenol content in the commercial blackcurrant juices was highly variable. ► Significant between-country and within-country variations were demonstrated. ► Our data implicates variable intake of blackcurrant juice polyphenols to Europeans.