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Abstract
Garcinia mangostana has been documented in Thai traditional medicine in various aspects. Although many benefits have been claimed, few scientific reports are available in the literature. The antioxidant properties were determined by scavenging DPPH, nitric oxide and lipid radicals in dose-dependent manners. In particular, the powerful scavenging activities were found. These data indicated that Garcinia mangostana played a pivotal role on the antioxidant and chemo preventive activities via a reducing mechanism and inhibition of intra cellular oxidative stress respectively. Antioxidant property of Garcinia mangostana have been studied by using different solvent extracts with different concentrations. The good free radical scavenging activity was found in THF extract at 20mg/ml concentration.