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dc.contributor.authorCosta, Siddhartha G. V. A. O. [UNESP]
dc.contributor.authorNitschke, Marcia
dc.contributor.authorLepine, Francois
dc.contributor.authorDeziel, Eric
dc.contributor.authorContiero, Jonas [UNESP]
dc.identifier.citationProcess Biochemistry. Oxford: Elsevier B.V., v. 45, n. 9, p. 1511-1516, 2010.
dc.description.abstractThe properties and applications of rhamnolipid surfactants produced by Pseudomonas aeruginosa L2-1 from cassava wastewater added with waste cooking oil (CWO) as low-cost substrate, were investigated and compared with the commercial rhamnolipid mixture JBR599 (Jeneil Biosurfactant Co., Saukville, USA). The rhamnolipids produced by strain L2-1 were characterized by high performance liquid chromatography-mass spectrometry. Sixteen different rhamnolipid congeners were detected, with Rha-C(10)-C(10) and Rha-Rha-C(10)-C(10) being the most abundant. The L2-1 rhamnolipids from CWO showed similar or better tensioactive properties than those from JBR599, with a minimal surface tension of 30 mN/m and a critical micelle concentration (CMC) of 30 mg/l. The L2-1 biosurfactants formed stable emulsions with several hydrocarbons and showed excellent emulsification of soybean oil (100%). These rhamnolipids removed 69% of crude oil present in contaminated sand samples at the CMC and presented antimicrobial activity against Bacillus cereus (32 mu g/ml), Micrococcus luteus (32 mu g/ml) and Staphylococcus aureus (128 mu g/ml). These results demonstrate that the rhamnolipids produced in ONO can be useful for industrial applications, such as the bioremediation of oil spills. (C) 2010 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.publisherElsevier B.V.
dc.relation.ispartofProcess Biochemistry
dc.sourceWeb of Science
dc.subjectP. aeruginosaen
dc.subjectCassava wastewateren
dc.subjectTensioactive propertiesen
dc.subjectOil removalen
dc.titleStructure, properties and applications of rhamnolipids produced by Pseudomonas aeruginosa L2-1 from cassava wastewateren
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionInst Armand Frappier
dc.description.affiliationUNESP, Dept Biochem & Microbiol, Inst Biol Sci, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUSP, Dept Phys Chem, Inst Chem, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationInst Armand Frappier, INRS, Laval, PQ H7V 1B7, Canada
dc.description.affiliationUnespUNESP, Dept Biochem & Microbiol, Inst Biol Sci, BR-13506900 Rio Claro, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Biociências, Rio Claropt
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