Effects of high light, high salt, nitrogen and phosphorus deficiency on growth and lipid production of Chlorella pyrenoidosa were investigated in a flat-plate photoreactor, and the oil quality indexes such as CN, IV, SV, CFPP, DU, and LCSF were also evaluated. The results show that the growth of C. pyrenoidosa was inhibited under the stress conditions, but the intracellular lipid content was significantly increased. Moreover, the combustion performance, oxidation stability, low temperature fluidity, and other oil quality indicators under these nutrient stress conditions were significantly improved. Importantly, it is found that starch was preferentially synthesized by algal cells, while with the prolongation of stress time, starch was gradually degraded, and the degraded carbon skeleton was mainly used for lipid synthesis.

中文翻译：

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应激条件下小球藻脂质生物合成特征

在平板光反应器中研究了高光，高盐，高氮，低磷缺乏对小球藻生长和脂质产生的影响，并且油质指标如CN，IV，SV，CFPP，DU和LCSF评估。结果表明，在胁迫条件下，C。pyrenoidosa的生长受到抑制，但细胞内脂质含量却明显增加。此外，在这些营养胁迫条件下，燃烧性能，氧化稳定性，低温流动性和其他油质指标得到了显着改善。重要的是，发现淀粉优先由藻类细胞合成，而随着胁迫时间的延长，淀粉逐渐降解，降解的碳骨架主要用于脂质合成。