The effects of fermentation product of peanut meal by Bacillus natto on growth performance and antioxidant activity of aging female rats induced by D-galactose were investigated. The results showed that the serum SOD activity of rats in aging model group was significantly lower than those in normal control group( P < 0. 05),and the content of MDA was significantly higher than those in normal control group( P < 0. 05),indicating that the model was successful. During the experiment,the average body weight of ...