초록 |
Enhancement of Dunaliella tertiolecta’s lipid/carbohydrate contents was done by exposing cells to stress conditions. The optimized conditions (nutrients, salinity, and light/dark) which enhances lipid/carbohydrate yield were determined. A relatively low salinity (17.5 %o), 5% CO2 and dark conditions resulted in maximum lipid productivity of (146.6 8 mg/L/d). While under CO2, salt and light deprived conditions the maximum carbohydrate productivity (202.56 mg/L/d) was achieved. Under salt variation, 5% CO2 and dark high yields of both lipid and carbohydrate productivity of 162.8 mg/L/d and 165.87 mg/L/d respectively were achieved. Carbohydrate productivity was better than many previous studies. |