Formulation of new medium for production of marine microalgae, Isochrysis sp.

This study was conducted to optimize the marine microalgae Isochrysis sp. biomass by minimum economic cost using agriculture fertilizers. Fot this purpose, microalgae Isochrysis sp. was cultured under batch culture condition using agriculture fertilizers to evaluate the differences in growth rate (biomass production) with those of analytical grade for 20 days. Four different culture media were prepared based on 100, 75, 50 and 25% cooper formula using commercial agriculture fertilizers and analytical grade inorganic salts and compared with F/2 medium as commonly used media for microalgae cultivation in laboratory scale. Isochrysis sp. showed better results in F/2 medium in terms of growth and intensity, however, no significant difference was found compared to medium 75% (P>0.05). This treatment i.e. medium 75% cooper for marine microalgae Isochrysis sp. is economically and biomass production have better conditions compared to other treatments. This treatment in addition to the marine microalgae copared to F/2, its cost is about 16 times lower (without consideration of the vitamins analytical grade vitamins). The results revealed that new formulation of fertilizer using commercial agricultural fertilizers as medium is feasible without any negative effect the Isochrysis sp. growth, and can be used as replacedment for the marine microalgae Isochrysis sp. biomass by minimum economic cost using agriculture fertilizers. Fot this purpose, microalgae Isochrysis sp. culture.