As a primary enzyme with antioxidant activity, it catalyses the reduction of harmful peroxides by glutathione and protects the cell membrane from oxidative damage.

• 作为抗氧化酶系的重要成员之一，它能有效清除生物体内的自由基，防止脂质过氧化，对防治活性氧引起的疾病、动脉粥样硬化、免疫系统缺陷、辐射损伤、肺气肿和晒斑等疾病有潜在的价值。