POLA Discovers Antioxidant and Melanin Suppressing Effects in Shinko's Subtree Extract

 With the cooperation of Shimane Prefecture, as a result of joint research with Professor Kaeko Murota of the Department of Life Science, Faculty of Bioresource Sciences, Shimane University, POLA was discarded in the process of cultivating Shimane Prefecture's specialty grape variety, Shinko. It was discovered that the accessory canopy has high antioxidant and melanin-suppressing effects. This knowledge will be used in future products released by POLA.

As a result of evaluating the antioxidant effect of the DPPH radical scavenging activity of the extract extracted from the accessory tree of "Shinko" (leaves and stems picked from spring to summer) with 50% ethanol aqueous solution, it was found that the Compared to branches (pruned from autumn to winter) and extracts extracted from fruits, it showed a higher antioxidant effect.


In addition, the accessory tree extract contained a higher concentration of polyphenols than the extracts from other parts. Furthermore, as a result of analyzing the components of polyphenols contained in the accessory tree extract, it contained a large amount of quercetin and quercetin glycosides, and these were considered to be active antioxidant components.

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