中文摘要：

有机体的多种疾病都与自由基对机体的氧化损伤有关，而抗氧剂具有很强的抗氧化活性和清除自由基的能力，保护机体细胞免受自由基的攻击，因此引起广泛关注并被应用于食品技术和医药学领域．抗氧剂分为内源性抗氧剂和外源性抗氧剂两类，内源性抗氧剂包括超氧化物歧化酶、谷胱甘肽过氧化物酶和过氧化氢酶等，外源性抗氧剂包括抗坏血酸、黄酮类化合物以及酚类化合物等．对上述抗氧剂抗氧化作用机理研究现状进行了综述．

英文摘要：

Various diseases are associated with the organism oxidative damage induced by free radicals in the body, moreover, antioxidants have powerful antioxidant activity and capacity of scavenging free radical, and protect the bodyg cells from attack of free radical, therefore, they have been widely used in food technology and medicine fields. Antioxidants are divided into endogenous antioxidants and exogenous antioxidants, endogenous antioxidants includes superoxide dismutase, glutathione peroxidase and catalase, exogenous antioxidants includes ascorbic acid, flavonoids and phenolic compounds. The antioxidant mechanism of the above antioxidants is reviewed in this thesis.