Effect of natural antioxidants on refined fish oil from viscera of channel catfish,ictalurus punctatus

The peroxide value was taken as index,the antioxidant effect of D-sodium erythorbate,rosemary and tea polyphenols on refined fish oil from the viscera of channel catfish was studied by Schaal oven-storage test.The results indicated that the antioxidation capability order was tea polyphenols rosemary D-sodium erythorbate,when the amount of antioxidants added 0.02% to the oil.The antioxidant effect of tea polyphenols increased with the enhancement of concentration.The citric acid and vitamin C were found to have a synergistic antioxidant effect on tea polyphenols,but Vitamin C exhibited a strong synergistic antioxidant effect compared to citric acid.