土壤中异黄酮植物雌激素降解体系的研究  

Research on the degradation system of isoflavonic phytoestrogen in soil

作　　者：李依韦[1] 银玲[1] 薛兰兰 

机构地区：[1]内蒙古民族大学生命科学学院,内蒙古通辽028042 [2]内蒙古赤峰市松山区农牧业局,内蒙古赤峰024005

出　　处：《环境污染与防治》2012年第3期55-58,共4页Environmental Pollution & Control

基　　金：内蒙古民族大学科研项目(No.MDX2010034)

摘　　要：利用睾丸酮丛毛单胞菌(菌株C.test+act5)具有消化多环芳烃类化合物这一特性,以异黄酮植物雌激素为底物筛选菌株C.test+act5降解雌激素的培养条件,使异黄酮植物雌激素在土壤中的含量相对降低,以期为高效降解环境中激素类物质奠定基础。结果表明:菌株C.test+act5降解异黄酮植物雌激素的最适质量浓度为100～200μg/mL,最适温度为30℃,最适pH为6.0;在此条件下,降解48h时的降解率达85%左右,72h后几乎完全被降解。Comamonas testosteroni （C. test4-act5） had property of degrading Pahs compounds, so experiments were conducted to culture C. test＋act5 using isoflavonic phytoestrogen as the substrate. The optimal culture condi- tions were obtained so as to make better use of C. test ＋ acts for decreasing the isoflavonic phytoestrogen in soil. These conclusions laid the foundations for efficient treatment of environmental hormone. Results showed that the op- timal culture conditions of C. test4-act5 were isoflavonic phytoestrogen 100-200μg/mL, temperature 30 ℃and pH 6.0. In these conditions, the degradation rate of isoflavonic phytoestrogen reached to 85 % after 48 h of culture, and it almost entirely degraded after culturing 72 h.

关 键 词：异黄酮植物雌激素 睾丸酮丛毛单胞菌 降解 

分 类 号：X53[环境科学与工程—环境工程] X17