Study of the inhibitory effect of the media culture parameters and cell population to increase the biomass production of Dunaliella tertiolecta

Microalgal growth curve, after the exponential phase, shows a stationary phase where algalbiomass production is inhibited and remains constant by some factors such as nutrientdepletion and intrinsic behavior. The present study is concerned with evaluating effects ofthe culture medium condition and intrinsic behavior on biomass production by Dunaliellatertiolecta. To this end, effect of pH, nutrient concentration, CO2 (NaHCO3) concentration,possible secreted substances, and cell density on the biomass production by D. tertiolectawere investigated. The results showed that biomass yield can be significantly affected by pH(p