Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/33717

TitleNovel bioemulsifier produced by a Paenibacillus strain isolated from crude oil
Author(s)Gudiña, Eduardo J.
Pereira, Jorge F. B.
Costa, Rita
Evtuguin, Dmitry V.
Coutinho, João A. P.
Teixeira, J. A.
Rodrigues, L. R.
KeywordsSurface active compound
Bioemulsifier
Paenibacillus sp
Bioremediation
Issue date2015
PublisherBioMed Central
JournalMicrobial Cell Factories
CitationGudiña, Eduardo J.; Pereira, Jorge F. B.; Costa, Rita; Evtuguin, Dmitry V.; Coutinho, João A. P.; Teixeira, J. A.; Rodrigues, L. R., Novel bioemulsifier produced by a Paenibacillus strain isolated from crude oil. Microbial Cell Factories, 14, 14, 2015
Abstract(s)BACKGROUND: Surface active compounds produced by microorganisms are attracting a pronounced interest due to their potential advantages over their synthetic counterparts, and to the fact that they could replace some of the synthetics in many environmental and industrial applications. RESULTS: Bioemulsifier production by a Paenibacillus sp. strain isolated from crude oil was studied. The bioemulsifier was produced using sucrose with and without adding hydrocarbons (paraffin or crude oil) under aerobic and anaerobic conditions at 40degreesC. It formed stable emulsions with several hydrocarbons and its emulsifying ability was not affected by exposure to high salinities (up to 300g/l), high temperatures (100degreesC-121degreesC) or a wide range of pH values (2-13). In addition, it presented low toxicity and high biodegradability when compared with chemical surfactants. A preliminary chemical characterization by Fourier Transform Infrared Spectroscopy (FT-IR), proton and carbon nuclear magnetic resonance (1H NMR and 13C CP-MAS NMR) and size exclusion chromatography indicated that the bioemulsifier is a low molecular weight oligosaccharide-lipid complex. CONCLUSION: The production of a low molecular weight bioemulsifier by a novel Paenibacillus strain isolated from crude oil was reported. To the best of our knowledge, bioemulsifier production by Paenibacillus strains has not been previously reported. The features of this novel bioemulsifier make it an interesting biotechnological product for many environmental and industrial applications.
TypeArticle
URIhttp://hdl.handle.net/1822/33717
DOI10.1186/s12934-015-0197-5
ISSN1475-2859
e-ISSN1475-2859
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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