微藻拟球藻中生物质、脂肪酸和类胡萝卜素生产的 LED 功率效率。
LED power efficiency of biomass, fatty acid, and carotenoid production in Nannochloropsis microalgae.
机构信息
Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, China; Algae Biotechnology Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia.
Algae Biotechnology Laboratory, School of Agriculture and Food Sciences, The University of Queensland, Brisbane, Queensland 4072, Australia.
出版信息
Bioresour Technol. 2018 Mar;252:118-126. doi: 10.1016/j.biortech.2017.12.096. Epub 2017 Dec 29.
The microalga Nannochloropsis produces high-value omega-3-rich fatty acids and carotenoids. In this study the effects of light intensity and wavelength on biomass, fatty acid, and carotenoid production with respect to light output efficiency were investigated. Similar biomass and fatty acid yields were obtained at high light intensity (150 μmol m s) LEDs on day 7 and low light intensity (50 μmol m s) LEDs on day 11 during cultivation, but the power efficiencies of biomass and fatty acid (specifically eicosapentaenoic acid) production were higher for low light intensity. Interestingly, low light intensity enhanced both, carotenoid power efficiency of carotenoid biosynthesis and yield. White LEDs were neither advantageous for biomass and fatty acid yields, nor the power efficiency of biomass, fatty acid, and carotenoid production. Noticeably, red LED resulted in the highest biomass and fatty acid power efficiency, suggesting that LEDs can be fine-tuned to grow Nannochloropsis algae more energy-efficiently.
微藻拟球藻可产生高附加值的富含 ω-3 的脂肪酸和类胡萝卜素。在这项研究中，我们研究了光强和光波长对生物量、脂肪酸和类胡萝卜素生产的影响，以及它们与光输出效率的关系。在培养的第 7 天，高光强（150 μmol m⁻² s⁻¹）LED 和第 11 天的低光强（50 μmol m⁻² s⁻¹）LED 下，可获得相似的生物量和脂肪酸产量，但低光强下的生物量和脂肪酸（特别是二十碳五烯酸）生产的功率效率更高。有趣的是，低光强可提高类胡萝卜素生物合成和产量的类胡萝卜素功率效率。白光 LED 既不利于生物量和脂肪酸的产量，也不利于生物量、脂肪酸和类胡萝卜素生产的功率效率。值得注意的是，红光 LED 可实现最高的生物量和脂肪酸功率效率，表明可以对 LED 进行微调，以更有效地培养拟球藻。
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