Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition
Microalgae have immense potential as biological sources to produce biofuels and high-value biomolecules. Biofilm-based microalgae cultivation has attracted much interest recently because of its high biomass productivity, reduced water use, and low cost of harvesting. This study aimed to understand t...
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doaj-b02893cf00fc42cf9cb3dfff909fda022020-11-24T22:10:06ZengMDPI AGEnergies1996-10732019-09-011219372410.3390/en12193724en12193724Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular CompositionXinru Zhang0Hao Yuan1Libo Guan2Xinyu Wang3Yi Wang4Zeyi Jiang5Limei Cao6Xinxin Zhang7School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaMicroalgae have immense potential as biological sources to produce biofuels and high-value biomolecules. Biofilm-based microalgae cultivation has attracted much interest recently because of its high biomass productivity, reduced water use, and low cost of harvesting. This study aimed to understand the effect of photoperiod on three microalgae biofilms, including <i>Nannochloris oculata, Chlorella</i> sp., and <i>Chlorella pyrenoidosa</i>. The examined photoperiods were 3:3 s, 5:5 s, 30:30 min, 12:12 h (light-period-to-dark-period ratio), and continuous lighting. By determining the maximum quantum yield and relative electron transport rate of photosystem II, we found that photoperiods on the seconds scale improved photosynthetic performance of microalgae biofilm. Biomass yield and lipid content of these three microalgae cultured under the photoperiod with the seconds scale increased by 11%−24% and 7%−22%, respectively, compared with those cultured under continuous lighting. In addition, the photoperiods of 3:3 s, 5:5 s, 30:30 min, and 12:12 h were beneficial for protein synthesis. These results have important implications in establishing suitable light regimes for microalgae biofilm-based cultivation systems.https://www.mdpi.com/1996-1073/12/19/3724microalgae biofilmphotoperiodphotosynthetic performancebiomassbiofuel |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xinru Zhang Hao Yuan Libo Guan Xinyu Wang Yi Wang Zeyi Jiang Limei Cao Xinxin Zhang |
spellingShingle |
Xinru Zhang Hao Yuan Libo Guan Xinyu Wang Yi Wang Zeyi Jiang Limei Cao Xinxin Zhang Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition Energies microalgae biofilm photoperiod photosynthetic performance biomass biofuel |
author_facet |
Xinru Zhang Hao Yuan Libo Guan Xinyu Wang Yi Wang Zeyi Jiang Limei Cao Xinxin Zhang |
author_sort |
Xinru Zhang |
title |
Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition |
title_short |
Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition |
title_full |
Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition |
title_fullStr |
Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition |
title_full_unstemmed |
Influence of Photoperiods on Microalgae Biofilm: Photosynthetic Performance, Biomass Yield, and Cellular Composition |
title_sort |
influence of photoperiods on microalgae biofilm: photosynthetic performance, biomass yield, and cellular composition |
publisher |
MDPI AG |
series |
Energies |
issn |
1996-1073 |
publishDate |
2019-09-01 |
description |
Microalgae have immense potential as biological sources to produce biofuels and high-value biomolecules. Biofilm-based microalgae cultivation has attracted much interest recently because of its high biomass productivity, reduced water use, and low cost of harvesting. This study aimed to understand the effect of photoperiod on three microalgae biofilms, including <i>Nannochloris oculata, Chlorella</i> sp., and <i>Chlorella pyrenoidosa</i>. The examined photoperiods were 3:3 s, 5:5 s, 30:30 min, 12:12 h (light-period-to-dark-period ratio), and continuous lighting. By determining the maximum quantum yield and relative electron transport rate of photosystem II, we found that photoperiods on the seconds scale improved photosynthetic performance of microalgae biofilm. Biomass yield and lipid content of these three microalgae cultured under the photoperiod with the seconds scale increased by 11%−24% and 7%−22%, respectively, compared with those cultured under continuous lighting. In addition, the photoperiods of 3:3 s, 5:5 s, 30:30 min, and 12:12 h were beneficial for protein synthesis. These results have important implications in establishing suitable light regimes for microalgae biofilm-based cultivation systems. |
topic |
microalgae biofilm photoperiod photosynthetic performance biomass biofuel |
url |
https://www.mdpi.com/1996-1073/12/19/3724 |
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