Inland saline-alkaline water can be used for the low-cost cultivation of microalgae, but whether algal biomass under various light sources has the potential to produce biodiesel remains to be developed. Herein, the influence of different light-emitting diode (LEDs) light colors (blue, red, white, mixed blue-red, and mixed blue-white LED) on the growth performance, lipid accumulation, and fatty acid composition of Chlorella sp. HQ cultivated in inland saline-alkaline water was investigated. The highest algal density was obtained under blue LEDs at the end of cultivation, reaching 1.93±0.03 × 10⁷ cells/mL. White LEDs can improve biomass yield, total lipid yield, and triacylglycerol yield per algal cell. The main fatty acid components of Chlorella from inland saline-alkaline water were palmitic acid and linoleic acid. The BiodieselAnalyzer© software was used to predict algal biodiesel quality by estimating different quality parameters. The cetane number, kinematic viscosity, and density of Chlorella biodiesel were 51.714–67.69, 3.583–3.845 mm²/s, and 0.834–0.863 g/cm³, respectively. This further proved that the Chlorella biomass obtained from inland saline-alkaline water has the potential to be used as a high-quality biodiesel feedstock.

内陆盐碱水可用于微藻的低成本栽培，但在各种光源下藻类生物质是否具有生产生物柴油的潜力仍有待开发。在本文中，不同发光二极管 (LED) 光颜色（蓝色、红色、白色、混合蓝红和混合蓝白 LED）对小球藻的生长性能、脂质积累和脂肪酸组成的影响。调查了在内陆盐碱水中种植的总部。在培养结束时在蓝色 LED 下获得最高的藻类密度，达到 1.93±0.03 × 10 ^{7 个}细胞/mL。白光 LED 可以提高每个藻类细胞的生物质产量、总脂质产量和三酰甘油产量。小球藻的主要脂肪酸成分来自内陆盐碱水的有棕榈酸和亚油酸。BiodieselAnalyzer© 软件用于通过估计不同的质量参数来预测藻类生物柴油的质量。小球藻生物柴油的十六烷值、运动粘度和密度分别为 51.714–67.69、3.583–3.845 mm ² /s 和 0.834–0.863 g/cm ³。这进一步证明了从内陆盐碱水中获得的小球藻生物质具有用作优质生物柴油原料的潜力。