Abstract: The antioxidant activity of Rhodotorular glutinis pigment was determined by the capability of eliminating hydroxyradical and preventing linoleic acid lipid peroxidation in the text. VE as a standard antioxidant was used to contrast with sample.The results showed that Rhodotorular glutinis pigment and VE had similarly eliminate effect on hydroxy radical in a higherconcentration, but in a lower concentration , the Rhodotorular glutinis pigment had a better activity .And in this experiment,Rhodotorular glutinis pigment only in high concentration could inhibit linoleic acid lipid peroxidation.

Key words: rhodotorular glutinis pigment, hydroxy radical, linoleic acid lipidosome