|Online ISSN : 2349-8080
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Publisher : Excellent Publishers
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2Faculty of Chemistry, The University of Danang - University of Education, Danang, Vietnam
Haematococcus lacustris is capable to synthesize high content of astaxanthin. Moreover, astaxanthin extracted from H.lacustris has been shown to have the highest anti-oxidativeactivity. While the demand for astaxanthin in the world is increasing, the production of astaxanthin from H. lacustris is still not easy since they have low growth rate and are very sensitive to changes in culture conditions. This study aimed at investigating the effect of nutritional factors on the growth rate of H. lacustris in order to determine the optimal medium for the biomass growth and astaxanthin synthesis of this specy. The results showed that H.lacustris grew better in RM culture medium (2.62 ± 0.17 × 105 cells/ml) than in BBM culture medium (2.44 ± 0.10 × 105 cells/ml). The highest cell density of H. lacustris was achieved in the RM medium with NaNO3 at 1200 mg/l (3.72 ± 0.022 × 105 cells/ml), and in the RM medium with K2HPO4 at 320 mg/l (3.42 ± 0.05 × 105 cells/ml).