微生物絮凝剂产生菌的筛选及其特性研究  

Screening for the bioflocculant producing strain and study on its characteristics

作　　者：褚可成[1] 石小霞[1] 陈志梅[1] 张东明[1] 薛林贵[1] 

机构地区：[1]兰州交通大学化学与生物工程学院,兰州730070

出　　处：《生物学杂志》2011年第5期42-46,共5页Journal of Biology

基　　金：国家自然科学基金项目(No:30870384);铁道部科技研究开发计划课题(No:2010Z001-E);甘肃省科技支撑计划项目(No:090NKCA079)

摘　　要：高活性微生物絮凝剂在废水处理方面起着非常重要的作用。从兰州佛慈中药制药厂废水池旁采集的土样中分离筛选出了具有絮凝活性的微生物菌种4株(C-5、G-12、G-2、N-7)。对其中3株絮凝率较高菌株的生长量、pH值变化、絮凝活性的分布进行了研究分析。结果表明G-2菌和C-5菌的最佳培养时间为60h,G-12菌为72h。它们的最高絮凝率分别为89.52%(G-2)、82.73%(C-5)、83.18%(G-12)。G-2菌和C-5菌产生絮凝效果的最高活性部位在菌体中而G-12菌则在上清液中。4 strains（C-5,G-12,G-2 and N-7） with flocculating activity were separated and selected from the soil near the waste water pool of Lanzhou FoCi pharmaceutical factory.The factors like growth,the pH and the distribution of flocculating activity of the chosen three strains with high flocculating rate were researched and analyzed.The results showed that the best cultivation time of G-2 and C-5 were 60 hours and G-12 was 72 h.The highest flocculating activity is 89.52%（G-2）,82.73%（C-5）and 83.18%（G-12）,respectively.The highest active sites of G-2 and C-5 were in the bacteria bodies.The broth of G-12 showed activity.

关 键 词：微生物 絮凝剂 筛选 絮凝率 

分 类 号：Q93-33[生物学—微生物学]