Whanger P D
Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis 97331, USA.
J Am Coll Nutr. 2002 Jun;21(3):223-32. doi: 10.1080/07315724.2002.10719214.
There are several selenocompounds in tissues of plants and animals. Selenate is the major inorganic selenocompound found in both animal and plant tissues. Selenocysteine is the predominant selenoamino acid in tissues when inorganic selenium is given to animals. Selenomethionine is the major selenocompound found initially in animals given this selenoamino acid, but is converted with time afterwards to selenocysteine. Selenomethionine is the major selenocompound in cereal grains, grassland legumes and soybeans. Selenomethionine can also be the major selenocompound in selenium enriched yeast, but the amount can vary markedly depending upon the growth conditions. Se-methylselenocysteine is the major selenocompound in selenium enriched plants such as garlic, onions, broccoli florets and sprouts, and wild leeks.
植物和动物组织中存在多种含硒化合物。硒酸盐是在动物和植物组织中发现的主要无机含硒化合物。当给动物投喂无机硒时，硒代半胱氨酸是组织中主要的硒氨基酸。硒代蛋氨酸是最初在投喂这种硒氨基酸的动物中发现的主要含硒化合物，但之后会随着时间转化为硒代半胱氨酸。硒代蛋氨酸是谷物、草原豆类和大豆中的主要含硒化合物。硒代蛋氨酸也可以是富硒酵母中的主要含硒化合物，但含量会因生长条件而有显著差异。甲基硒代半胱氨酸是大蒜、洋葱、西兰花小花和芽苗以及野韭菜等富硒植物中的主要含硒化合物。
