| To investigate the effects of concentration of iron, calcium and magnesium on the growth and lipid
accumulation of microalgal strain Desmodesmus sp. WC08, this research has tested the effects of 4 culture medium on the
growth and lipid accumulation by single factor experiment. It implied that the optimal biomass (2.42 g/L) and lipid productive
(0.58 g/L) were obtained in brine BG11, but the highest oil content (40.80%) was gained in F/2. Iron, magnesium and calcium
concentrations tests showed that calcium concentration had the significant effect on the biomass of Desmodesmus sp. WC08,
and minor effect was for iron concentration and magnesium concentration. At the same time, iron and calcium concentration
had significant effects on the oil content, but magnesium concentration just had smaller influence on the oil content. Given
lipid productive, the iron, magnesium and calcium all had significant impact. Brine BG11 medium was the optimal culture
medium for the growth and oil accumulation of Desmodesmus sp. WC08. And the optimal iron, magnesium and calcium
concentrations in brine BG11 culture medium were 2伊10-5, 0.09 and 0.05 mmol/L, respectively. |
