Temperature

In the present research work Spirulina fusiformis was cultivated in outdoor conditions in extreme conditions of Rajasthan and its biochemical composition was analyzed in order to find its nutritional value. Results of the present study reveals that under these growing conditions nutritional value of the cyanobacterium Spirulina fusiformis was maintained suitably

The well-known correlation between algae and renewable energy sources and in this fact has brought about a great interest for seeking growth conditions of algae. Light is one of the most important factor for growth and contents of algae. In this study, the effect of different light regimes on the growth rate and chlorophyll were determined and the results were indicated significant varieties in culture at different light intensities. It was observed that maximum growth rate in Spirulina platensis (0.077 µ day-1 ) and Dunalliella salina (0.085 µ day-1 ) was observed at 2500 lux and reduced with increase in intensity. When effect of temperature was studied it was found that the best growth rates for Spirulina platensis was at 30ºC and for Dunalliella salina at 25 ºC while chlorophyll content in Spirulina platensis was found to be maximum at 35ºC and for Dunalliella salina at 30 ºC.