Preliminary study on antioxidant activity of flavone extractive from purslane

The total flavonoids content in purslane was determined by 75 percent alcohol extraction and column chromatography colorimetric. It was demonstrated that the total flavonoid in purslane was 7.63% using spectrophotometry. The extraction of flavonoids from purslane was studied and the antioxidant activity of the extracts towards free radical scavenging was evaluated, such as the superoxide aninon radicals and hydroxyl radicals. The results showed that the dosage of flavones was in direct proportion to the antioxidation. The antioxidative effect of flavonoids was better than ascorbic acid, rutin and β-carotene on equivalent condition. Flavonoids was a potential products of natural, safe and effective antioxidant. This study will provide scientific basis on producing medicinal components of flavonoids from purslane.