污染作物籽实中Cu的分布、结合形态及其毒性  

Distribution, Binding Forms of Cu in Polluted Seeds of Crops and Its Toxicity

作　　者：杨居荣[1] 查燕[1] 刘虹[1] 云影[1] 

机构地区：[1]北京师范大学环境科学研究所环境模拟与污染控制国家重点联合实验室,北京100875

出　　处：《农业环境保护》2001年第4期199-201,共3页Agro-Environmental Protection

基　　金：国家自然科学基金资助项目( 49771069)

摘　　要：采用组织化学及生物化学试验方法 ,研究了污染作物籽实中 Cu的结合形态。结果表明， Cu在籽实各形态结构中的分布不均，以富含蛋白质的胚中浓度最高，以粗纤维和纤维素为主的种皮中浓度也较高；在籽实的主要营养成分中，以蛋白质的分布比例最高，脂肪中很少 ;在籽实不同类型蛋白质的分布比例也有差别；谷物经过深加工后， Cu污染可得到明显减轻。Distribution and binding forms of Cu in polluted seeds of rice, wheat and soybean were studied using histochemistry and experimentation of biochemistry, respectively. The results showed that the distribution of Cu in the seeds was uneven. It was discovered that the highest amounts of Cu in protein in embryo, and next abundant in the seed capsule in fibre and cellulose. In various nourish components of seeds, the concentrations of Cu exhibited: the highest in protein and the lowest in fat, respectively. The concentration of Cu in a variety of proteins was also detected to be different. During food processing, the concentrations of Cu decrease distinctly.

关 键 词：谷物 分布 结合形态 铜 毒性 污染作物 籽实 作物监测 

分 类 号：X835[环境科学与工程—环境工程] X132