Department of Biochemical and Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil.
Biotechnol J. 2012 Nov;7(11):1412-7. doi: 10.1002/biot.201200177. Epub 2012 Oct 2.
Similar to other photosynthetic microorganisms, the cyanobacterium Arthrospira platensis can be used to produce pigments, single cell proteins, fatty acids (which can be used for bioenergy), food and feed supplements, and biofixation of CO(2) . Cultivation in a specifically designed tubular photobioreactor is suitable for photosynthetic biomass production, because the cultivation area can be reduced by distributing the microbial cells vertically, thus avoiding loss of ammonia and CO(2) . The aim of this study was to investigate the influence of light intensity and dilution rate on the photosynthetic efficiency and CO(2) assimilation efficiency of A. platensis cultured in a tubular photobioreactor in a continuous process. Urea was used as a nitrogen source and CO(2) as carbon source and for pH control. Steady-state conditions were achieved in most of the runs, indicating that continuous cultivation of this cyanobacterium in a tubular photobioreactor could be an interesting alternative for the large-scale fixation of CO(2) to mitigate the greenhouse effect while producing high protein content biomass.
类似于其他光合微生物，蓝藻节旋藻可以用来生产色素、单细胞蛋白、脂肪酸（可用于生物能源）、食品和饲料添加剂以及 CO(2)的生物固定。在专门设计的管状光生物反应器中进行培养适合于光合生物量的生产，因为通过垂直分布微生物细胞可以减少培养面积，从而避免氨和 CO(2)的损失。本研究旨在探讨在连续过程中光强和稀释率对管状光生物反应器中培养的节旋藻的光合效率和 CO(2)同化效率的影响。使用尿素作为氮源，CO(2)作为碳源和 pH 控制。在大多数运行中达到了稳态条件，表明在管状光生物反应器中连续培养这种蓝藻可能是一种有趣的选择，可以大规模固定 CO(2)，以减轻温室效应，同时生产高蛋白含量的生物质。
