원문정보
초록
영어
The heterotrophic marine microoragnism Thraustochytrium aureum ATCC 34304 produces substantial amount of polyunsaturated fatty acids. In this study, changes in the lipid and fatty acid compositions of T. aureum were investigated according to the growth stage. T. aureum was grown in artificial sea water medium for 10 days at 25°C. Thin layer chromatographic analysis of lipids showed the presence of triacylglyceride (TAG), phospholipids (PL), and sterol. The content of TAG was increased at the entrance of stationary phase of cell growth, but the content of PL was conversely decreased. It was agreed with the biological functions of the lipids, as a main constituent of membrane and an energy reservoir of TAG and PL, respectively. Transmission electron microscopic studies of the cells showed the accumulation of larger sized lipid bodies in 3th day cells. And this might be due to production of TAG was maximum during day 3 which served as an energy source to perform cell metabolism.