Moreover, the concentration of polyphenols present in Black Russian and Tolusa extracts decreased by a factor of 2, 5 and 6 after ultrasonic treatment. However, the highest TEAC values (3.64-6.18 and 3.53-6.34 µmol Trolox/mg of extract) were found in polyphenol-rich extracts of Black Russian and Tolusa, respectively. The lowest Trolox equivalents antioxidant capacity (TEAC) values (1.29-1.62 and 1.56-1.99 µmol Trolox/mg of extract) were obtained from extracts containing anthocyanins. The extracts exhibited significant radical scavenging activity in a dose-dependent manner. The extracts obtained from the fruit of Black Russian and Tolusa were found to contain anthocyanins and other phenolic compounds. Anthocyanin composition was analyzed by HPLC-DAD and identification of the main anthocyanins was carried out by LC-MS-MS. The extraction yields of the extracts were estimated on the basis of reducing sugars content. Tolusa Cosmopolitan) with different anthocyanin profiles were obtained using an ultrasonic technique and the impact of the polyphenol concentration on antioxidant activity of these extracts was examined. Polyphenol-rich extracts from the fruit of two cultivars of strawberry (Fragaria x ananassa Duch. siberianmouse siberian .Isolation of polyphenol-rich and anthocyanin-rich extracts from red and black cultivars of strawberry (Fragaria x ananassa). 1st Studio - Siberian Mouse MSH-45 Masha 47

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