Accumulating evidence indicates that consumption of berries may exert beneficial effects against oxidative stress mediated diseases. Pelargonidin-3-O-glucoside (Pg3G), a bioactive ingredient in strawberry, has been reported to possess a potent antioxidant capacity. This study was therefore designed to develop an effective method to prepare pure Pg3G from strawberry and investigate its protective effect against H2O2-induced oxidative stress. According to our results, Pg3G occupied 85.55% of total anthocyanin content in strawberry. 240mg of Pg3G with the purity of 97.26% was finally isolated from 320g of strawberry lyophilized powder (SLP) by combination of AB-8 macroporous resin and high-speed counter-current chromatography (HSCCC) technologies. Further study unveiled that Pg3G significantly inhibited H2O2-induced ROS generation, GSH depletion and mitochondrial dysfunction, thereby ameliorating H2O2-induced oxidative stress. Overall, this study suggests that pelargonidin-3-O-glucoside can be used as a natural bioactive agent to prevent cellular oxidative stress.
Keywords: GSH; High-speed counter-current chromatography; Oxidative stress; Pelargonidin-3-O-glucoside; Strawberry.
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