硒是一种人体必需的微量元素,在人体内充当多种含硒酶,如谷胱甘肽过氧化酶的活动中心等,保护细胞膜免受氧自由基氧化损失的作用,具有防癌抗癌的生物化学功能。硒甲基半胱氨酸及其衍生物γ-谷氨酰硒甲基半胱氨酸是国际上公认的具有抗癌效应的机硒化物(Ip et al.,2000;Stan et al.,2008),富硒食品中是否富含这两种特殊的有机硒,关系此富硒食品有无抗癌防癌的功效。我国湖北恩施地区 Selenium is an essential trace element in the human body, acting as a variety of selenium-containing enzymes in the human body, such as the active center of glutathione peroxidase and the like, protecting the cell membrane from the oxidative loss of oxygen free radicals, Biochemical function. Selenomethyl cysteine ​​and its derivatives γ-glutamylselenomethycysteine ​​is an internationally recognized anti-cancer effect of organo-selenides (Ip et al., 2000; Stan et al., 2008 ), Rich in selenium foods are rich in these two special organic selenium, the relationship between this selenium-rich food anti-cancer effect. Enshi, Hubei, China