Evaluation of Antioxidant Properties of Commercial Pomegranate Juices

Background . Consumers consider pomegranate juice one of the most beneficial for health. The limited production pomegranates in Russia cannot meet needs Russian consumers with juices its own production. Pomegranate are produced from concentrates or pasteurized direct-squeezed imported different countries, there is no information about their antioxidant properties. Purpose Study content main biologically active substances and activity various brands on consumer market, influence formation Materials Methods objects research were freshly pressed fruits (control)and samples commercial using technologies: «Grande», «Benature», «Grante» -direct-squeezed juice; «Swell», «O'keй», «Rich», «Gold Brand» - reconstituted «Nar» addition juice. In juices, total phenolic compounds, anthocyanin, flavonoids, tannins vitamin C was determined. determined by two methods: FRAP coulometrictitration based measurement results which index calculated. Results Juices industrial differed significantly amount substances, spread values between 40-50%, they contained less anthocyanin flavonoids than freshly-pressed Total prevailed composition compounds all (40-75%). varied depending method determination. test showed highest coulometric titration «Benature». had Rich>Benature>Grante, more 85%. properties depend (R2> 0.772) 0.538). Conclusion depends tannins. evaluation can be used development functional beverages.