首页    期刊浏览 2025年07月12日 星期六
登录注册

文章基本信息

  • 标题:Escherichia coliに対する重金属毒性のフミン酸による低下
  • 本地全文:下载
  • 作者:太田 隆文 ; 星 真由美 ; 中澤 明子
  • 期刊名称:Journal of Health Science
  • 印刷版ISSN:1344-9702
  • 电子版ISSN:1347-5207
  • 出版年度:1983
  • 卷号:29
  • 期号:2
  • 页码:105-109
  • DOI:10.1248/jhs1956.29.2_105
  • 出版社:The Pharmaceutical Society of Japan
  • 摘要:Effect of humic acid on heavy-metal toxicity to Escherichia coli was investigated. The toxicity was evaluated as growth inhibition, namely an increase in generation or lag phase time, or a decrease in O.D. at stationary phase. With five metals (Co2+, Ni2+, Cd2+, Cu2+, Cr6+), an approximately linear relationship was observed between these parameters and metal concentration. The slope of such straight line obtained with each metal decreased clearly except with Cu2+ when E. coli was incubated in the culture medium containing humic acid together with a metal. That is to say, the toxicity of heavy metals was reduced with the humic acid. Gel filtration chromatography of a mixture of each metal and the humic acid showed that these metals had affinity for the humic acid under the growth conditions of E. coli.
  • 关键词:humic acid;heavy-metal toxicity;chromium;cobalt;nickel;cadmium;copper;Escherichia coli
国家哲学社会科学文献中心版权所有