Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bang Khun Thain, Bangkok 10150, Thailand.
Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bang Khun Thain, Bangkok 10150, Thailand.
Bioresour Technol. 2022 Jan;343:126077. doi: 10.1016/j.biortech.2021.126077. Epub 2021 Sep 30.
This work investigated the cultivation of Arthrospira (Spirulina) platensis BP in a photobioreactor under light intensities of 635, 980, 1300, and 2300 µmol m s, using a semi-continuous mode to keep cell concentration at optical densities (OD) of 0.4, 0.6, and 0.8. The highest productivity of biomass (0.62 g L d) and phycocyanin (123 mg L d) were obtained when cells were grown under a light intensity of 2300 µmol m s at OD 0.6. At this concentration, the efficiency of energy consumption to the biomass of algae was around 2.26-2.31 g (kW h) d, while, a maximum photosynthetic efficiency of 8.02% was obtained under a light intensity of 635 µmol m s at OD 0.8. This indicates how light intensity, cell concentration, and light-dark conditions can enhance biomass and phycocyanin production, if well manipulated.
本研究在光强为 635、980、1300 和 2300 μmol m s 的光生物反应器中，采用半连续培养方式，将细胞浓度维持在光密度（OD）为 0.4、0.6 和 0.8，研究了螺旋藻（Spirulina）platensis BP 的培养。当细胞在 OD 0.6 下，光强为 2300 μmol m s 时，生物量（0.62 g L d）和藻蓝蛋白（123 mg L d）的最高产量为 0.62 g L d。在该浓度下，藻类生物质的能量消耗效率约为 2.26-2.31 g（kW h）d，而在 OD 0.8 下，光强为 635 μmol m s 时，最大光合效率为 8.02%。这表明，如果能够很好地控制光强、细胞浓度和光照-黑暗条件，可以提高生物量和藻蓝蛋白的产量。
