Tyrosinase Inhibitory Effects and Antioxidative Activities of Saponins from Xanthoceras Sorbifolia Nutshell

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Abstract

Certain saponins are bioactive compounds with anticancer, antivirus and antioxidant activities. This paper discussed inhibitory effects of saponins from Xanthoceras Sorbifolia on tyrosinase, through the research of the rate of tyrosinase catalyzed L-DOPA oxidation. The inhibition rate of tyrosinase activity presented non-linear changes with the saponins concentration. The rate reached 52.0% when the saponins concentration was 0.96 mg/ml. Antioxidant activities of saponins from Xanthoceras Sorbifolia were evaluated by using hydroxyl and superoxide radical scavenging assays. The hydroxyl radical scavenging effects of the saponins were 15.5-68.7%, respectively at the concentration of 0.18-2.52 mg/ml. The superoxide radical scavenging activity reduced from 96.6% to 7.05% with the time increasing at the concentration of 1.44 mg/ml. All the above antioxidant evaluation indicated that saponins from Xanthoceras Sorbifolia exhibited good antioxidant activity in a concentration- dependent manner. © 2013 Zhang, Zhou.

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Zhang, H., & Zhou, Q. (2013). Tyrosinase Inhibitory Effects and Antioxidative Activities of Saponins from Xanthoceras Sorbifolia Nutshell. PLoS ONE, 8(8). https://doi.org/10.1371/journal.pone.0070090

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