Growth and carotenoids contents of Habmatococcus sp

Abstract

Unicellular green alga Haematococcus is known for their ability to produce high antioxidant capacity as one of the key criteria in culture for commercial production of keto-carotenoid astaxanthin. The growth rate of Haematococcus is controlled and regulated by physical and chemical parameters. The aim of this study was to investigate and compare the effect of various culture media, light intensities and NaNO3 feeding treatments for the optimal growth of a local strain of Haematococcus. Then they were stressed under high light intensity (250 μmol photons m-2 s-1). The obtained result revealed that the local strain Haematococcus was produced the highest cell concentration in BBM culture medium at the light intensity of 30 μmol photons m-2 s-1 and 0.25g/L NaNO3 feeding. Key works: Astaxanthin, feeding treatments, Haematococcus, medium, light intensities.