Chlorella sp. was cultured under stationary condition and aeration condition respectively. The effects of aeration on the growth rate, biomass, biological component and fatty acid composition of Chlorella sp. were studied. The results showed that comparing with stationary cultivation, the growth rate, biomass and productivity of Chlorella sp. in stationary phase under aeration condition were ten times higher; the contents of protein and total sugar increased significantly, while the contents of total lipid and starch reduced; the saturated fatty acids became less, while unsaturated fatty acids, especially polyunsaturated fatty acids went up; different aerations had different effects on the growth of Chlorella sp., and the suitable aeration condition was 1 L/min. The proper aeration measure could be used to improve cultivation efficacy and obtain higher desired product during the cultivation of Chlorella sp.. |