Chen, Junhui and Wei, Dong and Lim, Phaik Eem (2020) Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators. Bioresource Technology, 295. p. 122242. ISSN 0960-8524, DOI https://doi.org/10.1016/j.biortech.2019.122242.
Full text not available from this repository.Abstract
Phytohormones comprise a variety of trace bioactive compounds that can stimulate cell growth and promote metabolic shifts. In the present work, a two-stage screening strategy was innovatively established to identify positive phytohormones for enhancement of astaxanthin and lipid coproduction in microplate-based cultures of mixotrophic Chromochloris zofingiensis. The results showed that auxins were the most efficient stimulators for astaxanthin accumulation. The maximum content of 13.1 mg/g and yield of 89.9 mg/L were obtained using indole propionic acid (10 mg/L) and indoleacetic acid (7.8 mg/L), representing the highest levels of astaxanthin in this microalga reported to date. Total lipids with the highest content (64.5% DW) and productivity (445.7 mg/L/d) were coproduced with astaxanthin using indoleacetic acid. Statistical analysis revealed close relations between phytohormones and astaxanthin and lipid biosynthesis. This study provides a novel original strategy for improving astaxanthin and lipid coproduction in C. zofingiensis using the selected phytohormones as positive stimulators. © 2019 Elsevier Ltd
| Item Type: | Article |
|---|---|
| Funders: | Science and Technology of Guangzhou (Grant No. 201704030084), SinoPec Technology Development Program, China ( 218017-1 , 36100002-19-FW2099-0035 ), 111 Project, China (Grant No. B17018) |
| Uncontrolled Keywords: | Chromochloris zofingiensis; Astaxanthin; Lipids; Phytohormones; Induction |
| Subjects: | Q Science > Q Science (General) Q Science > QH Natural history T Technology > T Technology (General) |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences |
| Depositing User: | Dr Mohd Faizal Hamzah |
| Date Deposited: | 23 Dec 2015 02:33 |
| Last Modified: | 11 Nov 2019 02:28 |
| URI: | http://eprints.um.edu.my/id/eprint/15239 |
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