4.7 Article

Effects of light intensity on the production of phycoerythrin and polyunsaturated fatty acid by microalga Rhodomonas salina

出版社

ELSEVIER
DOI: 10.1016/j.algal.2021.102397

关键词

Constant light intensity; Fatty acids; Phycoerythrin; Rhodomonas saline; Stepwise increasing light intensity

向作者/读者索取更多资源

This study reveals the significant impact of lighting conditions on cell growth and PE synthesis in Rhodomonas salina, with increasing light intensity leading to higher production of PE and PUFAs.
Phycoerythrin (PE) is a phycobilipmtein with great potential in food, pharmaceuticals, and cosmetics applications. This work sought to investigate the effects of lighting conditions on the PE synthesis by the alga Rhodomonas salina. It was found that the effects of light intensity on the cell growth and PE synthesis highly depend on the cell density, and ultimately, the number of photons received per unit of cells. No obvious light limitation or inhibition to cell growth was observed when each cell received the photons within the range of 2.4-28 x 10(-9) mu mol.s(-1). Under low light intensity, R. salina increased the PE synthesis in order to capture more photons to compensate light deficiency. A strategy of stepwise increasing light intensity was developed to capture the rapid cell growth and high PE synthesis. The PE titer with this method reached 32 mg L-1, similar to 20% higher than that obtained at a fixed light intensity of 250 mu mol photon flux m(-2) s(-1) (mu mol.m(-2).s(-)(1)). In addition to PE synthesis, R. salina also produces an appreciable amount of omega-3 polyunsaturated fatty acids (PUFAs) with stearidonic acid (SDA, C18:4) in particular. Collectively, this work demonstrates that light intensity plays an important role in the culture of R. salina for simultaneous production of PE and PUFAs.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据