Effects of Culture Medium Enrichment with Zinc on Astaxanthin Accumulation in a New Strain of the Microalga Dysmorphococcus globosus.

ABSTRACT: High Zn²⁺ concentrations in microalgal cells that produce astaxanthin as a feed additive can reduce the symptoms of malnutrition in aquatic animals. Therefore, in this study, we analysed the effect of Zn²⁺ in the culture medium on the growth of a newly isolated microalgal strain Dysmorphococcus globosus ZY24. Zn²⁺ and white light stress altered the pigment content in microalgal cells. In addition, high Zn²⁺ concentrations in the culture medium altered cell morphology and chlorophyll fluorescence and also increased intracellular Zn²⁺ accumulation. Further, an optimal Zn²⁺ concentration in the culture medium promoted the synthesis of astaxanthin and other pigments. When the concentration of Zn²⁺ was 45.5 mg L

SUBMITTER: Zan Z 

PROVIDER: S-EPMC11644740 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature