Biosurfactant production by Bacillus subtilis using cassava-processing effluent

被引：81

作者：

Nitschke, M ^{[1
]}

Pastore, GM ^{[1
]}

机构：

[1] Univ Estadual Campinas, FEA, DCA, Lab Bioquim, BR-13083970 Campinas, SP, Brazil

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 2004年 / 112卷 / 03期

关键词：

biosurfactant; Bacillus subtilis; cassava effluent; surfactin; protease;

D O I：

10.1385/ABAB:112:3:163

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A cassava flour-processing effluent (manipueira) was evaluated as a substrate for surfactant production by two Bacillus subtilis strains. B. subtilis ATCC 21332 reduced the surface tension of the medium to 25.9 mN/m, producing a crude biosurfactant concentration of 2.2 g/L. The wild-type strain, B. subtilis LB5a, reduced the surface tension of the medium to 26.6 mN/m, giving a crude biosurfactant concentration of 3.0 g/L. A decrease in surfactant concentration observed for B. subtilis ATCC 21332 seemed to be related to an increase in protease activity. The biosurfactant produced on cassava effluent medium by B. subtilis LB5a was similar to surfactin.

引用

页码：163 / 172

页数：10

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