期刊
JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY
卷 32, 期 11, 页码 1357-1372出版社
KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGY
DOI: 10.4014/jmb.2209.09012
关键词
Chlorella; biotechnology; lipids; microalgae; biomass; phycoremediation
资金
- NRF grant - Korean government (Ministry of Science and ICT) [2022R1C1C1008690, 2022M3A9I3018121]
- Catholic University of Korea, Research Fund, 2022
- National Research Foundation of Korea [2022R1C1C1008690, 2022M3A9I3018121] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Microalgae, particularly Chlorella spp., have been proposed as an alternative to fossil fuels due to their advantages such as faster growth, usage of non-arable land, recovery of nutrients from wastewater, efficient CO2 capture, and high amount of valuable biomolecules for humans. However, the cost-consuming cultivation, processing, and lipid extraction processes remain major restrictions in microalgal biofuel technology. This study provides a comprehensive review of lipid enhancement strategies for Chlorella cells, with a focus on regulating carbon sources, nutrients, stresses, and expression of exogenous genes to improve biomass production and lipid synthesis.
Heavy reliance on fossil fuels has been associated with increased climate disasters. As an alternative, microalgae have been proposed as an effective agent for biomass production. Several advantages of microalgae include faster growth, usage of non- arable land, recovery of nutrients from wastewater, efficient CO2 capture, and high amount of biomolecules that are valuable for humans. Microalgae Chlorella spp. are a large group of eukaryotic, photosynthetic, unicellular microorganisms with high adaptability to environmental variations. Over the past decades, Chlorella has been used for the large-scale production of biomass. In addition, Chlorella has been actively used in various food industries for improving human health because of its antioxidant, antidiabetic, and immunomodulatory functions. However, the major restrictions in microalgal biofuel technology are the cost-consuming cultivation, processing, and lipid extraction processes. Therefore, various trials have been performed to enhance the biomass productivity and the lipid contents of Chlorella cells. This study provides a comprehensive review of lipid enhancement strategies mainly published in the last five years and aimed at regulating carbon sources, nutrients, stresses, and expression of exogenous genes to improve biomass production and lipid synthesis.
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