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Type: Artigo de periódico
Title: Biosurfactant Production By Bacillus Subtilis Using Cassava-processing Effluent.
Author: Nitschke, Marcia
Pastore, Glaucia Maria
Abstract: 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.
Subject: Bacillus Subtilis
Carbohydrate Metabolism
Hydrogen-ion Concentration
Industrial Microbiology
Peptides, Cyclic
Spectrophotometry, Infrared
Surface Tension
Surface-active Agents
Citation: Applied Biochemistry And Biotechnology. v. 112, n. 3, p. 163-72, 2004-Mar.
Rights: fechado
Identifier DOI: 
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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