초록
The objective of this article was to provide the extraction yields, the kinetic parameters, and the fatty acids compositions in the oil obtained from freeze-dried cells of Mortierella isabellina. The oil was obtained by supercritical CO<SUB>2</SUB> (SFE-CO<SUB>2</SUB>) and compressed liquefied petroleum gas (LPG) extractions in different conditions of temperature and pressure. According to the kinetic curves, the mass transfer rates, and the yields of extract, 80<SUP>o</SUP>C/250bar (SFE-CO<SUB>2</SUB>) and 40<SUP>o</SUP>C/20bar (LPG) were the most favorable conditions. The highest yield was 4.45wt.% (LPG). According to the fatty acids composition, SFE-CO<SUB>2</SUB> provided a slightly higher performance than compressed LPG. The highest concentration of fatty acids was 361mg/g oil at 40<SUP>o</SUP>C/150bar. Stearic, cis-10-pentadecanoic, cis-10-heptadecanoic, oleic, linoleic and linolenic acids were the major fatty acids extracted. These results highlight the possibility of using pressurized fluids to break the cells for increasing the fatty acids extraction from a lipids-rich fungal biomass.