用大豆黄酮(daidzein)灌喂脑老化模型小鼠.5周后分别测定各组小鼠脑组织的超氧化物歧化酶(SOD)活性、乳酸脱氢酶(LDH)活性、总抗氧化能力(T AOC)和丙二醛(MDA)含量.结果显示:大豆黄酮能够使脑老化模型小鼠的SOD的活力和T AOC显著增加,LDH的活力和MDA的含量极显著下降,其中T AOC和MDA超过了生理盐水对照组,暗示大豆黄酮除了通过提高SOD的活性来增加机体抗氧化能力外,还存在通过其他的途径来提高机体的抗氧化能力,并且大豆黄酮在抗氧化水平上还有一定的剂量效应. Dawley mice were fed with daidzein, and the activities of superoxide dismutase (SOD), lactate dehydrogenase (LDH), total antioxidant capacity T AOC) and malondialdehyde (MDA). The results showed that daidzein significantly increased the activity of SOD and T AOC, the activity of LDH and the content of MDA significantly decreased Over the saline control group, suggesting that in addition to daidzein by increasing the activity of SOD to increase the body’s antioxidant capacity, there are other ways to improve the body’s antioxidant capacity, and daidzein in the antioxidant level there is a certain Dose effect.