Antioxidant activities of extracts by different solvents from Chondrus ocellatus.

Chondrus ocellatus was extracted by methanol, ethanol, ethyl ether, ethyl acetate, petroleum ether and acetone, respectively. Antioxidant activities of these extracts were determined by scavenging effect on superoxide free radicals, hydroxide free radicals, H₂O₂ induced hemolysis of rat erythrocytes and lipid peroxide of rat liver microsome. The results indicate that different extracts of Chondrus ocellatus all show some antioxidant activities on different free radicals, and solvents have some effects of extracts on these activities. At the same concentration, extracts show the highest scavenging rate on the four different free radicals extracted-by ethyl ether, acetone, ethyl ether and ethyl acetate, respectively. [ABSTRACT FROM AUTHOR]