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Mar. Drugs 2019, 17(1), 39;

Differences between Motile and Nonmotile Cells of Haematococcus pluvialis in the Production of Astaxanthin at Different Light Intensities

The Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361101, China
Coastal and Ocean Management Institute, Xiamen University, Xiamen 361101, China
Key Laboratory of Marine Chemistry and Applied Technology, Xiamen 361101, China
College of Ocean and Earth Science, Xiamen University, Xiamen 361101, China
Xiamen Ocean Vocational College, Xiamen 361101, China
College of fisheries, Guangdong Ocean University, Zhanjiang 524088, China
Author to whom correspondence should be addressed.
Received: 30 November 2018 / Revised: 8 January 2019 / Accepted: 8 January 2019 / Published: 9 January 2019
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Haematococcus pluvialis, as the best natural resource of astaxanthin, is widely used in nutraceuticals, aquaculture, and cosmetic industries. The purpose of this work was to compare the differences in astaxanthin accumulation between motile and nonmotile cells of H. pluvialis and to determine the relationship between the two cells and astaxanthin production. The experiment design was achieved by two different types of H. pluvialis cell and three different light intensities for an eight day induction period. The astaxanthin concentrations in nonmotile cell cultures were significantly increased compared to motile cell cultures. The increase of astaxanthin was closely associated with the enlargement of cell size, and the nonmotile cells were more conducive to the formation of large astaxanthin-rich cysts than motile cells. The cyst enlargement and astaxanthin accumulation of H. pluvialis were both affected by light intensity, and a general trend was that the higher the light intensity, the larger the cysts formed, and the larger the quantity of astaxanthin accumulated. In addition, the relatively low cell mortality rate in the nonmotile cell cultures indicated that the nonmotile cells have a stronger tolerance to photooxidative stress. We suggest that applying nonmotile cells as the major cell type of H. pluvialis to the induction period may help to enhance the content of astaxanthin and the stability of astaxanthin production. View Full-Text
Keywords: Haematococcus pluvialis; astaxanthin; light intensity; photooxidative stress Haematococcus pluvialis; astaxanthin; light intensity; photooxidative stress

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Li, F.; Cai, M.; Lin, M.; Huang, X.; Wang, J.; Ke, H.; Zheng, X.; Chen, D.; Wang, C.; Wu, S.; An, Y. Differences between Motile and Nonmotile Cells of Haematococcus pluvialis in the Production of Astaxanthin at Different Light Intensities. Mar. Drugs 2019, 17, 39.

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