文献类型：期刊文献

英文题名：Controlling average number of photons received per biomass to promote the growth of Synechocystis sp. PPC 6803

作者：Zhang, Jiangong[1];Fan, Fei[2];Yu, Tao[2];Chen, Jianpei[1];Wan, Minxi[2];Li, Yuanguang[2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2022

卷号：44

期号：5-6

起止页码：767

外文期刊名：BIOTECHNOLOGY LETTERS

收录：;EI(收录号：20222012106479);WOS:【SCI-EXPANDED(收录号:WOS:000793613500001)】；

基金：This work was funded by National Natural Science Foundation of China (31372548).

语种：英文

外文关键词：Synechocystis sp; PCC 6803; Light attenuation; Average number of photons received per biomass; Growth rate; Light efficiency

摘要：To investigate the actually received light of cells in the photo bioreactor, a light attenuation model of Synechocystis sp. PCC 6803 was established. The relationship between the average number of photons received per biomass (APRPB) and the growth of cell was analyzed. The results demonstrated, Cornet model was accurately fitted with the light attenuation of Synechocystis sp. PCC 6803 and the cell growth rate was affected by APRPB. When the value of APRPB is 3.2 mu mol g(-1) s(-1), the cell have the maximum light efficiency. A maximum specific growth rate of 0.05 h(-1) was achieved with APRPB from 3.2 to 12.8 mu mol g(-1) s(-1). After 156 h cultivation, compared to cells cultured under constant light [light intensity: 100 and 1800 mu mol/(m(2) s)], the DCW under controlled light intensity (light intensity increasing with the cell density) was higher by 79.1% and 20.0%, respectively. This study indicated that APRPB could be used as a light intensity regulation criterion to improve cell production despite different types of reactor and cell density, which provided a theoretical basis for improving the biomass yield of Synechocystis sp. PCC 6803 or other photosynthetic auto-trophic organism.