| 초록 |
Microalgal lipids can be used as feedstock for biodiesel production, and the nutritional factors such as nitrogen affect the biomass productivity, lipid content, and fatty acids composition of microalgae during cultivation. In order to investigate the effect of nitrogen source on the biomass and lipid production of a marine microalga Tetraselmis sp., nine different nitrogen sources including sodium nitrate, potassium nitrate, ammonium nitrate, ammonium bicarbonate, ammonium chloride, ammonium acetate, urea, glycine, and yeast extract were compared at the same concentration of 8.82 mM. Biomass productivity was the highest in yeast extract, followed by glycine, nitrate, and urea. All ammonium sources showed an inhibition in cell growth, but resulted in a higher lipid content than other nitrogen sources. The highest lipid productivity was achieved in yeast extract supplementation due to a significantly higher biomass production. Majur components of fatty acid methyl ester (FAME) biodiesel were palmitic, oleic, linoleic, and α-linolenic acid. |
