Selenium Distribution,Characterization and Partitioning in Rice Grown in China
(0) Selenium (Se)-being a crucial component of glutathione peroxide,thioredoxin reductase and at least 23 other essential selonoproteins,is a necessity for both human and animal health. The nutrition spectrum,however,for Se is relatively narrow,with recommended intake of between 50-200 μg per day (NRC,1983).Physiological depletion of Se has been associated with muscular weakness,myalgia,cartilage disfunction,reproductive impairment and heart failure.Chronic Se toxicosis or selenosis,on the other hand has been implicated in causing hair and nail loss,skin lesions,liver enlargement in addi tion to gastrointestinal and neurological pathologies (McLaughlin et al.,1999).Both deficiency and ex cess disease etiologies generally follow geographi cal Se distribution,with environmental and agricul tural practices having a marked influence on the Se content of many foods.In particular the Se content of rice for those whose dietary mainstay is this grain is of particular concern. This study proposes to bridge key knowledge gaps regarding the Se content of Chinese rice and provide further clarity for spatial,regional,country and even global grain Se patterns.
P.N.Williams G-X.Sun Y.-G Zhu
Research Centre for Eco-Environmental Sciences,Chinese Academy of Sciences.18 Shuangqing Road,Haidian District,Beijing 100085,China
国际会议
The First International Conference on Selenium in the Environment and Human Health(第一届硒与环境和人体健康国际会议)
苏州
英文
9-10
2009-10-01（万方平台首次上网日期，不代表论文的发表时间）