School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India.
School of Bio Sciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India.
Bioresour Technol. 2015 Dec;198:626-33. doi: 10.1016/j.biortech.2015.09.065. Epub 2015 Sep 26.
Constant and fluctuating light intensity significantly affects the growth and biochemical composition of microalgae and it is essential to identify suitable illumination conditions for commercial microalgae biofuel production. In the present study, effects of light intensities, light:dark cycles, incremental light intensity strategies and fluctuating light intensities simulating different sky conditions in indoor photobioreactor on Desmodesmus sp. VIT growth, lipid and carbohydrate content were analyzed in batch culture. The results revealed that Desmodesmus sp. VIT obtained maximum lipid content (22.5%) and biomass production (1.033 g/L) under incremental light intensity strategy. The highest carbohydrate content of 25.4% was observed under constant light intensity of 16,000 lx and 16:08 h light:dark cycle. The maximum biomass productivity of Desmodesmus sp. VIT (53.38 mg/L/d) was occurred under fluctuating light intensity simulating intermediate overcast sky condition.
恒定和波动的光照强度会显著影响微藻的生长和生物化学组成，因此确定适合商业微藻生物燃料生产的光照条件至关重要。在本研究中，分析了室内光生物反应器中不同光照强度、光照：黑暗周期、递增光照强度策略和模拟不同天空条件的波动光照强度对 VIT 小球藻生长、脂质和碳水化合物含量的影响。结果表明，在递增光照强度策略下，VIT 小球藻获得了最大的脂质含量（22.5%）和生物量产量（1.033 g/L）。在 16000 lx 的恒定光照强度和 16:08 h 的光照：黑暗周期下，观察到最高的碳水化合物含量为 25.4%。在模拟中等阴天天空条件的波动光照强度下，VIT 小球藻的最大生物量生产力（53.38 mg/L/d）。
