Study on auto-oxidation and several antioxidants on antioxidation performance of raspberry seed oil

The effects of temperature and time on the auto- oxidation of raspberry seed oil and antioxidantion performance of several antioxidants in raspberry seed oil were studied according to peroxide value ( POV) of raspberry seed oil. The results showed that temperature and time had a remarkable effect during the oil self- oxidation process, and the effect of temperature was greater than that of time.Tertiary butyl hydroquinone ( TBHQ) and proanthocyanidins had good antioxidantion ability for the oil, proanthocyanidins with ascorbic acid ( V C) or with citric acid exhibited remarkable antioxidant activity and synergistic effect in the raspberry oil, V C was better than citric acid.When 0.02% proanthocyanidins with 0.02% V C was used in the oil, the shelf life of the oil was prolonged from 2³ months to 16¹7 months in 20℃.