食品科学 ›› 2008, Vol. 29 ›› Issue (12): 465-468.

• 生物工程 • 上一篇    下一篇

絮凝剂产生菌的筛选及其特性研究

 王军辉, 查学强, 姜绍通   

  1. 合肥工业大学生物与食品工程学院;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Screening of Microbial Flocculant-producing Bacteria and Characterization of Produced Flocculant

 WANG  Jun-Hui, CHA  Xue-Qiang, JIANG  Shao-Tong   

  1. College of Biotechnology and Food Engineering,Hefei University of Technology,Hefei 230009,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 从合肥肉联厂污泥排放口的活性污泥中筛选得到一株稳定高效的微生物絮凝剂产生菌LH64,所产絮凝剂对高岭土悬浮液体系有较好的絮凝作用。对其特性研究表明:LH64在牛肉膏蛋白胨液体培养基中,pH7.0,30℃时生长良好,培养23h即可达到生长最大值。LH64在摇床培养23h时产生絮凝剂,主要为胞外絮凝剂。该絮凝剂有一定的热稳定性,加入Ca2+等金属离子及碱液可增加其絮凝活性。同时在优化絮凝条件下,该菌所产絮凝剂对多种废水净化效果明显,显示出良好的应用前景。

关键词: 筛选, 菌株, 微生物絮凝剂, 絮凝活性

Abstract: A flocculant-producing strain LH64 was isolated,which shows high and stable flocculating activity for kaolin suspension. The result showed that in the beef fextract-peptone liquid medium,at 30 ℃ and pH 7.0,the strain LH64 grows well,and after 23-hour culture,the maximum growth value is achieved. The strain LH64 flocculant mainly produces extracellullar flocculant,after 23-hour culture. The flocculant has some thermalstability. The flocculating activity is remarkably increased by Ca2+ and lye. The flocculant has obvious effects in waste water treatment,demonstrating its good application prospects.

Key words: screening, strain, microbial flocculant, flocculating activity