Effect of capsaicin on tea-seed oil antioxidant and scavenging superoxide anion free radical activity

In this paper, the antioxidant property of capsaicin, including antioxidant effect on tea-seed oil and superoxide anion free radical O2-·scavenging activity was studied. The tea-seed oil with antioxidant was preserved at(60±2) ℃ for 10 d and the peroxide value(POV) of the tea-seed oil was determined by iodometry to test the antioxidant activity of cansaicin or other antioxidants on tea-seed oil. The O2-·scavenging activity was determined by modified pyrogallol auto-oxidation method. The result indicated that the POV of tea-seed oil with 0.10% capsaicin was 17.03 mmol/kg at the 10 th day, but the POV of sample without capsaicin was 32.16 mmol/kg. The antioxidant activity to tea-seed oil was between BHT and vitamin E under same concentration. The O2-·scavenging activity was 80.75% when the capsaicin concentration was 0.0060 mmol/ml, and at the same time,the scavenging activity of vitamin E and BHT was 81.12% and 77.15%, respectively. So capsaicin has strong O2-·scavenging activity.