期刊
BIORESOURCE TECHNOLOGY
卷 273, 期 -, 页码 326-334出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.11.036
关键词
Rhodotorula babjevae; Microbial lipid; Glycolipids; Biosurfactant; Cancer cell lines
资金
- Ministry of Higher Education and Scientific Research, Tunisia
The newly isolated oleaginous yeast, Rhodotorula babjevae Y-SL7, was shown to accumulate high intracellular content of microbial oil (mainly triacylglycerols) and to secret, under the same culture conditions, an atypical glycolipid. This unusual behavior was induced when the strain was subjected to nitrogen limitation and high amount of carbon. A series of analytical methods was adopted in order to structurally characterize the secreted glycolipid. The latter consists of a mixture of 9 molecules formed by a polyol head group, bound through the carboxyl end of an acetylated 3-hydroxy fatty acid with C18 or C16 chain length. In addition of their physicochemical properties such as emulsifying activity on hydrophobic substrates, Y-SL7 glycolipids have shown a therapeutically promising cytotoxic effect against different cancer cell lines. In fact, Y-SL7 strain can be used for the production of triacylglycerols as energetic molecules and for the secretion of a biosurfactant of therapeutic and environmental interest.
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