Journal
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
Volume 19, Issue 2, Pages 191-194Publisher
SPRINGER
DOI: 10.1023/A:1023299111663
Keywords
emulsifying agent; fermentation; glycolipid; oil; organic solvents; Penicillium
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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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