Study on the effect of salinity changes on growth, biomass, and chlorophyll a and carotenoid pigments of microalgae Nannochloropsis oculata

In this study the effect of different salinities on growth, biomass and pigments of Chlorophyll a and Carotenoid were tested to determine an appropriate salinity to produce maximum growth, biomass and carotenoids of microalgae (N.oculat).Therefore, the 2-liter flask contains microalga under different levels of salinities (20, 25, 32, 35, 50 ppt), and under laboratory conditions( temperature 25-22 ° C, PH. 8, and light period of 12 h light and 12 h darkness) were cultured for 14 days. The results of present study indicate that The maximum growth of microalgae (72.63×106cell ml–1) and the maximum specific growth rate of microalgae (0.33 d⁻1) included in treatments with salinity of 25 and 30 ppt, that had a significant difference with the other treatments (p