黑果枸杞色素的抗氧化活性研究

目的：研究黑果枸杞色素的抗氧化活性。方法：通过测定黑果枸杞色素的还原能力和对化学模拟体系中二苯代苦味酰基(DPPH·)清除能力,以及对小鼠红细胞溶血性、小鼠血清抗活性氧能力、小鼠肝组织脂质过氧化产物MDA生成的影响和小鼠肝线粒体肿胀度的影响,探讨了黑果枸杞色素的体外抗氧化活性。结果：黑果枸杞色素在化学本质上具有一定的抗氧化能力,有很强的DPPH·清除活性,IC50达到0.164 mg·mL^-1；能显著的抑制小鼠红细胞溶血,IC50为0.112 mg·mL^-1；能增强小鼠血清抗活性氧能力,抑制小鼠肝组织脂质过氧化产物MDA生成和小鼠肝线粒体肿胀度,并显示出一定的量效关系。结论：黑果枸杞色素在一定浓度范围内具有抗氧化活性。

Study on antioxidant activity of pigment of Lycium ruthenicum

OBJECTIVE: To elvaulate the antioxidant activity of the pigment of Lycium ruthenicum. METHOD: The antioxidant activities were measured by the effects of the reducing ability, scavenging DPPH. H2O2-induced hemolysis of mice erythrocyte, serum resistance of reactive oxygen species, content of MDA in liver tissue, and swelling effect of mitochondria in liver tissue. RESULT: The pigment of L. ruthenicum could scaveng DPPH* remarkably with IC50 0.164 mg x mL(-1), inhibitte hemolysis of mice erythrocyte evidently with IC50 0.112 mg x mL(-1). The resistant of reactive oxygen species was enhanced by the tested substances, simultanously. The concentration of MDA of peroxidation of lipid in mice liver could be reduced, and the swelling of mice liver mitochondria alse be restrained. CONCLUSION: The pigment of L. ruthenicum has antioxidant activity in tested concentration.