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Fatty acid contents were measured in the cultures of the flagellate green algae Dunaliella tertiolecta Butcher under different conditions of light intensity, duration of light, and temperature. Duration of light and temperature, in particular, affected the growth rate of D. tertiolecta. The maximun ...

Fatty acid contents were measured in the cultures of the flagellate green algae Dunaliella tertiolecta Butcher under different conditions of light intensity, duration of light, and temperature. Duration of light and temperature, in particular, affected the growth rate of D. tertiolecta. The maximun cell number reached $2.32{\times}10^6$ cells/ml. The division rate per day was 1.97 in the exponential phase. The analysis of fatty acids obtained from various conditions showed that the lipid mainly contained C16, C18:3$\omega$3 fatty acids and there was no significant level of polyunsaturated fatty acids such as EPA and DHA. Polyene fatty acid increased with decreasing temperature and light intensity did not influence on fatty acid composition. The increasing duration of light enhanced the growth of D. tertiolecta, whereas polyene($\omega$3) slightly increased with decreasing the light period.