Effects of light intensity, salinity and temperature on growth in Çamalti strain of Dunaliella viridis Teodoresco from Turkey

In this study, Dunaliella viridis was isolated from Çamalti salt work and its growth rate, cell density, chlorophyll-a and total carotenoids content were studied in a batch system. This strain was cultured at different NaCl concentrations (1, 2 and 3M), different temperatures (25 and 28°C) and different light intensities (50 and 75 µmol photon/m2/sec). In this experiment maximum growth rate was at 2 M salinity with 28°C temperature and 50 µmol photon/m2/sec light intensity. Maximum cell density for D. viridis was obtained at 25°C, 50 µmol photon/m2/sec, 2M cultures. The highest chlorophyll-a and total carotenoids were calculated as 2.84±0.50 and 1.11±0.05 pg cell-1, respectively. The optimum temperature and salinity for growth of D. viridis strain were around 25°C and 2 M NaCl. The present study shows that cell densities and pigment yields of D. viridis Çamalti strain are strongly dependant on salinity, temperature and light intensity. © 2008 Asian Network for Scientific Information