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Type: Artigo de periódico
Title: Exopolymeric Substances (EPS) Produced by Petroleum Microbial Consortia
Author: da Cruz, GF
Angolini, CFF
Neto, EVD
Loh, W
Marsaioli, AJ
Abstract: Microbial consortia recuperated of crude oil samples from the Pampo Sul field, Campos Basin, RJ, produced biosurfactants in mineral media containing glucose and 9,10-dihydrophenantrene, n-nonadecane, nonadecanoic acid, slightly biodegraded crude oil (P1) or heavily biodegraded crude oil (P2) as carbon sources. The production of exopolimeric substances (EPS) and petroleum biodegradation do not necessarily occur simultaneously. The EPS analyses by infrared and eletronspray ionization mass spectrometry (ESI-MS) revealed a mixture of surfactine isoforms. The biosurfactants reduced the surface tension of water and Zinder medium from 72.4 and 55.7 to 28.6 mN m(-1). Additionally, this surfactant emulsified different oils in water with performances similar to or better than of a conventional surfactant, Tween 80.
Subject: biosurfactant
surface tension
emulsification index
hydrocarbon biodegradation
Country: Brasil
Editor: Soc Brasileira Quimica
Citation: Journal Of The Brazilian Chemical Society. Soc Brasileira Quimica, v. 21, n. 8, n. 1517, n. 1523, 2010.
Rights: aberto
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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