茶叶中的硒成分分析  

Analysis on Selenium Compositions in Tea Leaves

作　　者：杜琪珍[1] 沈星荣[1] 方兴汉[1] 

机构地区：[1]中国农业科学院茶叶研究所

出　　处：《茶叶科学》1991年第2期133-137,共5页Journal of Tea Science

摘　　要：采用硒75示踪研究了茶叶中的硒成分。结果表明,茶叶中的硒约80%属于硒蛋白质,其中除少量与色素、多酚、核酸和果胶呈结合状态外,其余绝大部分的硒蛋白均呈游离状态。硒蛋白中占硒总量21.91%的硒为硒代甲硫氨酸硒,无机硒仅占硒总量的8%左右。Selenium compositions in tea leaves were analysed with selenium 75tracing.Results showed that proteins and inorganic compositions were about80% and 8% of selenium in tea leaves(dry weight)respectively.Most ofthe selenium proteins were free,except the small amount of the combina-tions of pigments,polyphenols,pectin and nudeic acid.Of the selenium intea leaves,21.91% was in form of selenomethionine.

关 键 词：茶叶 硒 硒75 有机硒 无机硒 

分 类 号：S571.1[农业科学—茶叶生产加工]