Abstract: FTC method was used to determine inhibition effect of red radish pigment to peroxidation of linoleic acid(40℃)Gas chromatography was adopted to measure inhibition action of red radish pigment in the oxygen absorption during the peroxidation of canola oil(93℃).Natural red radish pigment had almost the same antioxidative activity as BHT at the same concentration.The inhibition ratio,coold be achiewed more than 93％by the 0.01％pigment addition.Red radish pigment was a natural,edible and strong antioxidative pigment with broad application prospects.

Key words: Red radish pigment Antioxidant effect FTC(Ferric Thiocyanate)method Gas chromatography Linoleic acid Canola oil