| 초록 |
Microalgae have been suggested as alternative sources for biodiesel production. For the commercialization of microalgal biodiesel, the lipid production yield must first be enhanced through increasing both of cellular lipid content and the cell growth. This study investigated the effect of salinity on the cell growth, lipid content and production yield in marine microalga Tetraselmis sp. The cells were cultivated in F/2 medium under different salinities from 0, 9, 22, 35, 45, 55 to 70 PSU by adjusting MBL artificial seawater composition. Sterilized ambient air was supplied as 0.2 v/v/m for aeration and the light intensity was 100 μmol/m2/s. High salinities above 45 PSU showed inhibition of cell growth, while the biomass concentrations were higher under low salinities below 35 PSU. Low salinities of 9 and 22 PSU showed relatively higher lipid content among of all cultures, resulting in the highest lipid production of 0.264 and 0.275 g/L on day 9. The highest lipid production yield was achieved under 22 PSU. |
