期刊
BIORESOURCE TECHNOLOGY
卷 159, 期 -, 页码 240-248出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.02.078
关键词
LED; Wavelength shift; Chlorella vulgaris; Microalgal cultivation; Biodiesel
资金
- Ministry of Trade, Industry Energy (MOTIE)
- Korea Institute for Advancement of Technology (KIAT)
- Honam Institute for Regional Program Evaluation through the Leading Industry Development for Economic Region
- Advanced Biomass R&D Center (ABC) of Korea - Ministry of Education, Science and Technology [ABC-2012-055032]
- Industrial Technology Research Infrastructure Program - Ministry of Trade, Industry and Energy (MTE, Korea) [N0000004]
- Korea Evaluation Institute of Industrial Technology (KEIT) [N0000004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
LEDs light offer several advantages over the conventional lamps, thereby being considered as the optimal light sources for microalgal cultivation. In this study, various light-emitting diodes (LEDs) especially red and blue color with different light wavelengths were employed to explore the effects of light source on phototrophic cultivation of Chlorella vulgaris. Blue light illumination led to significantly increased cell size, whereas red light resulted in small-sized cell with active divisions. Based on the discovery of the effect of light wavelengths on microalgal biology, we then applied appropriate wavelength at different growth stages; blue light was illuminated first and then shifted to red light. By doing so, biomass and lipid productivity of C. vulgaris could be significantly increased, compared to that in the control. These results will shed light on a novel approach using LED light for microalgal biotechnology. (C) 2014 Elsevier Ltd. All rights reserved.
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