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https://hdl.handle.net/1822/46562
Título: | New glycolipid biosurfactants produced by the yeast strain Wickerhamomyces anomalus CCMA 0358 |
Autor(es): | Souza, Karla S. Teixeira Gudiña, Eduardo J. Azevedo, Zélia Freitas, Victor de Schwan, Rosane F. Rodrigues, L. R. Dias, Disney R. Teixeira, J. A. |
Palavras-chave: | Biosurfactant Glycolipid Antimicrobial activity Critical micelle concentration Wickerhamomyces anomalus |
Data: | Jun-2017 |
Editora: | Elsevier 1 |
Revista: | Colloids and Surfaces B: Biointerfaces |
Citação: | Souza, 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 |
Resumo(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. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/46562 |
DOI: | 10.1016/j.colsurfb.2017.03.041 |
ISSN: | 0927-7765 |
e-ISSN: | 0927-7765 |
Versão da editora: | http://www.journals.elsevier.com/colloids-and-surfaces-b-biointerfaces/ |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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document_46728_1.pdf | 1,52 MB | Adobe PDF | Ver/Abrir |