Structure, properties and applications of rhamnolipids produced by Pseudomonas aeruginosa L2-1 from cassava wastewater

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorCosta, Siddhartha G. V. A. O.
dc.creatorNitschke, Marcia
dc.creatorLepine, Francois
dc.creatorDeziel, Eric
dc.creatorContiero, Jonas
dc.date2013-09-30T18:47:17Z
dc.date2014-05-20T13:56:19Z
dc.date2016-10-25T17:05:41Z
dc.date2013-09-30T18:47:17Z
dc.date2014-05-20T13:56:19Z
dc.date2016-10-25T17:05:41Z
dc.date2010-09-01
dc.date.accessioned2017-04-05T21:14:48Z
dc.date.available2017-04-05T21:14:48Z
dc.identifierProcess Biochemistry. Oxford: Elsevier B.V., v. 45, n. 9, p. 1511-1516, 2010.
dc.identifier1359-5113
dc.identifierhttp://hdl.handle.net/11449/20128
dc.identifierhttp://acervodigital.unesp.br/handle/11449/20128
dc.identifier10.1016/j.procbio.2010.05.033
dc.identifierWOS:000281091700010
dc.identifierhttp://dx.doi.org/10.1016/j.procbio.2010.05.033
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/865862
dc.descriptionThe 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.
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageeng
dc.publisherElsevier B.V.
dc.relationProcess Biochemistry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectRhamnolipids
dc.subjectP. aeruginosa
dc.subjectCassava wastewater
dc.subjectTensioactive properties
dc.subjectOil removal
dc.titleStructure, properties and applications of rhamnolipids produced by Pseudomonas aeruginosa L2-1 from cassava wastewater
dc.typeOtro


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