| Literature DB >> 20580228 |
Luciane Maria Colla1, Juliana Rizzardi, Marta Heidtmann Pinto, Christian Oliveira Reinehr, Telma Elita Bertolin, Jorge Alberto Vieira Costa.
Abstract
Lipases and biosurfactants are compounds produced by microorganisms generally involved in the metabolization of oil substrates. However, the relationship between the production of lipases and biosurfactants has not been established yet. Therefore, this study aimed to evaluate the correlation between production of lipases and biosurfactants by submerged (SmgB) and solid-state bioprocess (SSB) using Aspergillus spp., which were isolated from a soil contaminated by diesel oil. SSB had the highest production of lipases, with lipolytic activities of 25.22U, while SmgB had 4.52U. The production of biosurfactants was not observed in the SSB. In the SmgB, correlation coefficients of 91% and 87% were obtained between lipolytic activity and oil in water and water in oil emulsifying activities, respectively. A correlation of 84% was obtained between lipolytic activity and reduction of surface tension in the culture medium. The surface tension decreased from 50 to 28mNm(-1) indicating that biosurfactants were produced in the culture medium. Copyright 2010 Elsevier Ltd. All rights reserved.Entities:
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Year: 2010 PMID： 20580228 DOI： 10.1016/j.biortech.2010.05.086
Source DB: PubMed Journal: Bioresour Technol ISSN： 0960-8524 Impact factor: 9.642