真菌胞外聚合物及其与重金属作用机制研究进展  

Fungal extracellular polymeric substances and their interaction mechanisms with heavy metals

作　　者：王亮[1,2] 陈桂秋[1,2] 曾光明[1,2] 张文娟[1,2] 陈云[1,2] 

机构地区：[1]湖南大学环境科学与工程学院,湖南长沙410082 [2]环境生物与控制教育部重点实验室(湖南大学),湖南长沙410082

出　　处：《环境污染与防治》2010年第6期74-80,共7页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.50908078);国家水体污染控制与治理科技重大专项(No.2009ZX07212-001-02;No.2009ZX07212-001-06);中国博士后科学基金资助项目(No.200902467;No.20080430153);湖南省博士后科研资助专项计划项目(No.2008RS402);高等学校博士学科点专项科研基金资助项目(No.20070532058)

摘　　要：真菌胞外聚合物(EPS)是近年来真菌微生物研究的热点,其在食品行业、医药工业和环境重金属污染治理中起着非常重要的作用。综述了国内外关于真菌EPS提取方法、产量影响因素、组成和结构的研究进展;介绍了真菌EPS在环境中与重金属作用机制的研究进展,主要包括胞外吸附和络合机制、草酸盐微沉淀机制和胞外重金属还原机制。在此基础上,展望了真菌EPS在环境重金属污染治理特别是重金属废水处理上的应用前景和亟待解决的研究内容,以便更好地为国内真菌EPS和重金属污染治理等方面的研究提供参考。Fungal extracellular polymeric substances（EPS）are highlight in recent fungal micro-organisms research.It plays a very important role in the food and pharmaceutical industry and environmental pollution control.This paper summarized the research progress of the extraction methods,yield factors,composition and structure of fungal EPS.The molecular mechanism of fungal EPS with heavy metals in environment was introduced from extracellular complexing adsorption mechanism,oxalic acid micro-precipitation mechanism and heavy metal reduction mechanism.On that basis,the application forecast and burning question of fungal EPS for the treatment of heavy metal containing wastewater were prospected in order to provide a reference for the domestic research of pollution control about fungal EPS and heavy metals.

关 键 词：真菌 胞外聚合物 重金属 分子机制 生物吸附 

分 类 号：X703[环境科学与工程—环境工程] X172