水稻籽实中砷的结合形态特征及其稳定性

应用生态学报 ›› 2002, Vol. ›› Issue (9): 1141-1144.

水稻籽实中砷的结合形态特征及其稳定性

何孟常, 杨居荣

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

收稿日期:2000-08-18 修回日期:2001-01-12 出版日期:2002-09-15
通讯作者: 何孟常,男,1963年生,博士,副教授,主要从事水环境、土壤污染化学、环境生态学等研究,发表论文40余篇,其中SCI收录6篇.E-mail:hemc@bnu.edu.cn
基金资助:
国家自然科学基金(29977002);水环境模拟国家重点实验室开放基金资助项目(9905).

Characteristic of binding forms of arsenic in polluted rice seed and their stability

HE Mengchang, YANG Jurong

State Key Joint Laboratory of Environmental Simulation and Pollution Control, Institute of Environmental Sciences, Beijing Normal University, Beijing 100875

Received:2000-08-18 Revised:2001-01-12 Online:2002-09-15

摘要/Abstract

摘要： 利用凝胶层析方法对水稻籽实中As的结合形态特征及其稳定性进行了研究.结果表明,水稻籽实中存在的As主要与表观分子量为54.5KD和5.5KD的蛋白质形成结合体.分子量为54.5KD的蛋白质As结合体不太稳定,并且在蒸煮加热和体外消化酶的作用下容易分解,生成相对稳定的、小分子的结合体形式.

关键词: 水稻籽实, 砷, 结合形态, 稳定性

Abstract: The protein-binding forms of As in polluted rice seed and their stability were studied using the methods of Sephadex chromatography. The results showed that As in rice seed was mainly combined with the proteins with apparent molecular weights of 54.5 KDand 5.5 KD. The protein-binding form of As (54.5 KD) was unstable, and was easily decomposed into stable and tiny molecular under the treatment of steaming and digestive enzyme.

中图分类号:

何孟常, 杨居荣. 水稻籽实中砷的结合形态特征及其稳定性[J]. 应用生态学报, 2002, (9): 1141-1144.

HE Mengchang, YANG Jurong . Characteristic of binding forms of arsenic in polluted rice seed and their stability[J]. Chinese Journal of Applied Ecology, 2002, (9): 1141-1144.

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