Abstract
Scenedesmus spp. have been reported as potential microalgal species used for the lipid production. This study investigated the effects of light intensity (at three levels: 50, 250, and 400 μmol photons m−2 s−1) on the growth and lipid production of Scenedesmus sp. 11-1 under N-limited condition. Carotenoid to chlorophyll ratio was higher when algae 11-1 grew under 250 and 400 μmol photons m−2 s−1 than that under 50 μmol photons m−2 s−1, while protein contents was lower. Highest biomass yield (3.88 g L−1), lipid content (41.1 %), and neutral lipid content (32.9 %) were achieved when algae 11-1 grew at 400 μmol photons m−2 s−1. Lipid production was slight lower at 250 μmol photons m−2 s−1 level compared to 400 μmol photons m−2 s−1. The major fatty acids in the neutral lipid of 11-1 were oleic acid (43–52 %), palmitic acid (24–27 %), and linoleic acid (7–11 %). In addition, polyunsaturated fatty acids had a positive correlation with total lipid production, and monounsaturated fatty acids had a negative one.
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Acknowledgment
This study was supported by grant KGCX2-YW-374-3 from Chinese Academy of Sciences and grant 2008ZX07422-003-5-2 from the Ministry of Science and Technology of China.
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Liu, J., Yuan, C., Hu, G. et al. Effects of Light Intensity on the Growth and Lipid Accumulation of Microalga Scenedesmus sp. 11-1 Under Nitrogen Limitation. Appl Biochem Biotechnol 166, 2127–2137 (2012). https://doi.org/10.1007/s12010-012-9639-2
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DOI: https://doi.org/10.1007/s12010-012-9639-2