Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/46562

TitleNew glycolipid biosurfactants produced by the yeast strain Wickerhamomyces anomalus CCMA 0358
Author(s)Souza, Karla S. Teixeira
Gudiña, Eduardo J.
Azevedo, Zélia
Freitas, Victor de
Schwan, Rosane F.
Rodrigues, L. R.
Dias, Disney R.
Teixeira, J. A.
KeywordsBiosurfactant
Glycolipid
Antimicrobial activity
Critical micelle concentration
Wickerhamomyces anomalus
Issue dateJun-2017
PublisherElsevier
JournalColloids and Surfaces B: Biointerfaces
CitationSouza, Karla S. Teixeira; Gudiña, Eduardo J.; Azevedo, Zélia; Freitas, Victor de; Schwan, Rosane F.; Rodrigues, Lígia R.; Dias, Disney R.; Teixeira, José A., New glycolipid biosurfactants produced by the yeast strain Wickerhamomyces anomalus CCMA 0358. Colloids and Surfaces B: Biointerfaces, 154, 373-382, 2017
Abstract(s)In this work, biosurfactant production by several yeast strains was evaluated using different culture media. The best results were obtained with the strain Wickerhamomyces anomalus CCMA 0358 growing in a culture medium containing glucose (1 g/L) and olive oil (20 g/L) as carbon sources. This strain produced 2.6 g of biosurfactant per liter after 24 hours of growth. The crude biosurfactant reduced the surface tension of water to values around 31 mN/m, and its critical micelle concentration was 0.9 mg/mL. This biosurfactant was characterized through mass spectrometry (MS), and nuclear magnetic resonance (NMR) as a mixture of two different glycolipids, comprising a sugar moiety linked to one or three molecules of oleic acid. To the best of our knowledge, these biosurfactants are structurally different from those previously reported. Furthermore, the crude biosurfactant exhibited antimicrobial activity against several microorganisms, including the pathogens Candida albicans, Escherichia coli, Staphylococcus epidermidis and Streptococcus agalactiae, which opens the possibility for its use in several biomedical applications.
TypeArticle
URIhttp://hdl.handle.net/1822/46562
DOI10.1016/j.colsurfb.2017.03.041
ISSN0927-7765
e-ISSN0927-7765
Publisher versionhttp://www.journals.elsevier.com/colloids-and-surfaces-b-biointerfaces/
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

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