Cassava flour wastewater as a substrate for biosurfactant production.
Five cassava flour wastewater (manipueira) preparations were tested as culture media for biosurfactant production by a wild-type Bacillus sp. isolate. No-solids (F), no-solids diluted (F/2), natural (I), natural diluted (I/2), and decanted (IPS) were the tested manipueira media. The microorganism was able to grow and to produce biosurfactant on all manipueira preparations. The media whose solids were removed (F and F/2) showed better results than preparations with the presence of solids (I, I/2, and IPS). No-solids medium (F) showed a surface tension of 26,59 mN/m and reciprocal of critical micelle concentration of over 100 and was selected as a potential substrate for biosurfactant production.
Laboratório de Bioquímica, Departanento de Ciéncia de Alinentos, Faculdade de Engenharia de Alimentos, UNICAMP, Rua Monteiro, Lobato, 80 Cx. Postal 6121, CEP 13083-970, Campinas, SP, Brazil. nitschke@bol.com.br
Marcia
M
Nitschke
Glaucia
G
Pastore
D001407:Bacillus / Q000254:growth & development / Q000378:metabolism*; D005433:Flour; D007700:Kinetics; D002365:Manihot; D028321:Plant Preparations; D013500:Surface Tension; D013501:Surface-Active Agents / Q000138:chemical synthesis*; D014865:Waste Disposal, Fluid
D028321:Plant Preparations; D013501:Surface-Active Agents