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| Effects of bioactive molecules on the growth and oil accumulation of microalgae Mychonastes afer |
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| KeyWord:microalgae Mychonastes afer growth oil accumulation nervonic acid bioactive molecule |
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| Abstract: |
| Abscisic acid (ABA)，epigallocatechin gallate (EGCG)，butylated hydroxyanisole (BHA) and gallic acid (GA) were added to the medium of Mychonastes afer during culturing and the effects of four bioactive molecules on the growth，oil accumulation and fatty acid composition of Mychonastes afer were studied. The results showed that four bioactive molecules added in the early exponential phase of growth had no significant impact on the biomass of microalgae，while they had remarkable influences on the oil content of microalgae, in which the oil content and oil productivity of microalgae added with BHA were the highest，reaching 35.76% and 0.94 g/L，and improved by 12.70% and 14.63% compared with microalgae added with dimethyl sulfoxide; the fatty acid composition of algae oil was not affected by four bioactive molecules; four bioactive molecules added in the late exponential phase of growth had slight impact on the growth of microalgae, had no significant promotion on oil accumulation, and had influences on the fatty acid composition of algae oil in different degrees. |
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