期刊
BIORESOURCE TECHNOLOGY
卷 228, 期 -, 页码 227-234出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.12.077
关键词
Crypthecodinium sp; Total fatty acids; DHA; Starch; Neutral lipids
资金
- National Research Foundation (NRF)
- Prime Minister's Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) Programme [R-182-000-205-592]
- 985 Project of Peking University
- National Natural Science Foundation of China [31471717]
In the present study, light illumination was found to be efficient in elevating the total fatty acid content in a newly isolated heterotrophic microalga, Crypthecodinium sp. SUN. Under light illumination, the highest total fatty acid and DHA contents were achieved at 96 h as 24.9% of dry weight and 82.8 mg g (1) dry weight, respectively, which were equivalent to 1.46-fold and 1.68-fold of those under the dark conditions. The elevation of total fatty acid content was mainly contributed by an increase of neutral lipids at the expense of starches. Moreover, light was found to alter the cell metabolism and led to a higher specific growth rate, higher glucose consumption rate and lower non-motile cell percentage. This is the first report that light can promote the total fatty acids accumulation in Crypthecodinium without growth inhibition. (C) 2016 Elsevier Ltd. All rights reserved.
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