Content of sugar, titrated acids and biologically active substances in blackberries grown in the forest-steppe of Ukraine

Abstract For the first time was assessed quality of fruits four varieties American blackberries and one Swiss Serbian selection, grown in Forest-Steppe Ukraine. The limits variation fruit mass, content dry soluble substances, sugars, titrated acids, ascorbic acid, polyphenols anthocyanins were established. mass varied within a minimum 6.6 g Asterina variety maximum 8.2 – Chester Thornless, amount substances range 9.4 (Cacanska Bestrna) 15.1% (Heaven Can Wait), sugars from 7.82 to 12.72% Kiowa Thornless varieties. highest bioactive particular accumulated by Heaven Wait varieties, last these, among studied had polyphenolic 845 mg.100 −1 , variability which very low, corresponding 8%. According look fruit, its as well taste, ratio sugar there highlighted that have prospect widespread cultivation industrial plantations, such Chief Joseph. In order conduct selection process for creation whose will excellent marketable, consumer preventive qualities (apart above-mentioned varieties) should be also involved with others, namely Kiowa.