Research on the Effects of Nitric Nitrogen and Temperature on Heamatococcus lacustris Under Different Cultural Modes

Abstract:

Autotrophic and heterotrophic growth and the effect of nitric nitrogen，temperature on Heamatococcus lacustris were investigated. The microalgae grew better in heterotrophic mode. In autotrophic and heterotrophic the biomass were 0.687 g/L and 3.319 g/L respectively ，the astaxathin content were 2.264% and 3.199%，respectively. In heterotrophic，the optimum growth concentration of sodium acetate was 1.5 g/L，nitric nitrogen was 0.5 g/L，growth temperature was 22 ℃，the suitable stress temperature was 30 ℃.