Production of an extracellular polysaccharide with emulsifier properties by Penicillium citrinum |
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Authors: | Camargo-de-Morais MM Ramos SAF Pimentel MCB de Morais Jr MA Lima Filho JL |
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Institution: | (1) Laboratório de Imunopatologia Keizo Asami (LIKA), Setor de Biotecnologia, Universidade Federal de Pernambuco, Av. Moraes Rego, s/n, Cidade Universitária, 50670-901 Recife, PE, Brazil; Fax: |
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Abstract: | Penicillium citrinum produced a glycolipid with emulsifier properties during cultivation on mineral medium with 1% (v/v) olive oil as carbon source. The emulsifier production was growth-associated and reached maximal activity at 60 h of cultivation. The production yield (Y
p/s) was 0.54 and the best emulsifying activity was observed for xylene and diesel oil when compared to other carbohydrates tested. The emulsifier was shown to be stable to a wide range of pH and temperature values and was shown to contain D-galactose, D-glucose and D-xylose (8.2:1.0:5.3) with a total carbohydrate content of 43%. The presence of salts stimulated the emulsification activity, suggesting potential for its application in industrial waste or marine remediation. |
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Keywords: | Emulsifying agent fermentation glycolipid oil organic solvents Penicillium |
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