Zhang Wen-Wen, Zhou Xue-Fei, Zhang Ya-Lei, Cheng Peng-Fei, Ma Rui, Cheng Wen-Long, Chu Hua-Qiang
State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai, 200092, P.R. China.
Poyang Lake Eco-economy Research Center, Jiujiang University, Jiujiang, 332005, P.R. China.
J Microbiol Biotechnol. 2018 Dec 28;28(12):2019-2028. doi: 10.4014/jmb.1807.07008.
Natural astaxanthin mainly derives from a microalgae producer, . The induction of nitrogen starvation and high light intensity is particularly significant for boosting astaxanthin production. However, the different responses to light intensity and nitrogen starvation needed to be analyzed for biomass growth and astaxanthin accumulation. The results showed that the highest level of astaxanthin production was achieved in nitrogen starvation, and was 1.64 times higher than the control group at 11 days. With regard to the optimization of light intensity utilization, it was at 200 μmo/m²/s under nitrogen starvation that the highest astaxanthin productivity per light intensity was achieved. In addition, both high light intensity and a nitrogen source had significant effects on multiple indicators. For example, high light intensity had a greater significant effect than a nitrogen source on biomass dry weight, astaxanthin yield and astaxanthin productivity; in contrast, nitrogen starvation was more beneficial for enhancing astaxanthin content per dry weight biomass. The data indicate that high light intensity synergizes with nitrogen starvation to stimulate the biosynthesis of astaxanthin.
天然虾青素主要来源于一种微藻生产商。氮饥饿和高光强度的诱导对于提高虾青素产量尤为重要。然而，需要分析生物量生长和虾青素积累对光强度和氮饥饿的不同反应。结果表明，在氮饥饿条件下虾青素产量达到最高水平，在第11天时比对照组高1.64倍。关于光强度利用的优化，在氮饥饿条件下，光强度为200 μmol/m²/s时，每光强度的虾青素生产率最高。此外，高光强度和氮源对多个指标都有显著影响。例如，高光强度对生物量干重、虾青素产量和虾青素生产率的显著影响大于氮源；相反，氮饥饿更有利于提高每干重生物量的虾青素含量。数据表明，高光强度与氮饥饿协同作用，刺激虾青素的生物合成。
Zotero 插件