Production and characterization of biosurfactant from Bacillus subtilis CCTCC AB93108

被引：0

作者：

刘智峰 ^{[1
,2
]}

曾光明 ^{[1
,2
]}

钟华 ^{[1
,2
]}

傅海燕 ^{[1
,3
]}

刘小兰 ^{[1
]}

机构：

[1] College of Environmental Science and Engineering, Hunan University

[2] Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University

[3] Department of Environmental Engineering, Xiamen University of Technology

来源：

JournalofCentralSouthUniversityofTechnology | 2010年 / 17卷 / 03期

关键词：

Bacillus subtilis; biosurfactant; surfactant; emulsification activity; emulsion stability; hydrophobicity;

D O I：

暂无

中图分类号：

TQ423 [表面活性剂];

学科分类号：

0817 ;

摘要：

The production and properties of the biosurfactant synthesized by Bacillus subtilis CCTCC AB93108 were studied. The maximum concentration of the surfactant is 1.64 g/L when the bacteria grow in a medium supplemented with glucose as carbon sources. The isolated biosurfactant is a complex of protein and polysaccharide without lipids. It reduces the surface tension of distilled water to 45.9 mN/m, and its critical micelle concentration (CMC) is 2.96 g/L. It can stabilize emulsions of several aromatic and aliphatic hydrocarbons, such as benzene, xylene, n-pentane, n-nonane, gasoline and diesel oil. It presents high emulsification activity and stability in a wide range of temperature (4-100 ℃) and a long period of duration.

引用

页码：516 / 521

页数：6

共 9 条

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