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Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators

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 micr...

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Main Authors: Chen, Junhui, Wei, Dong, Lim, Phaik Eem
Format: Article
Published: Elsevier 2020
Subjects:
Q Science (General)
QH Natural history
T Technology (General)
Online Access:http://eprints.um.edu.my/15239/
https://doi.org/10.1016/j.biortech.2019.122242
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spelling my.um.eprints.152392019-11-11T02:28:52Z http://eprints.um.edu.my/15239/ Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators Chen, Junhui Wei, Dong Lim, Phaik Eem Q Science (General) QH Natural history T Technology (General) 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 Elsevier 2020 Article PeerReviewed 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 https://doi.org/10.1016/j.biortech.2019.122242 doi:10.1016/j.biortech.2019.122242
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic Q Science (General)
QH Natural history
T Technology (General)
spellingShingle Q Science (General)
QH Natural history
T Technology (General)
Chen, Junhui
Wei, Dong
Lim, Phaik Eem
Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
description 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
format Article
author Chen, Junhui
Wei, Dong
Lim, Phaik Eem
author_facet Chen, Junhui
Wei, Dong
Lim, Phaik Eem
author_sort Chen, Junhui
title Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
title_short Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
title_full Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
title_fullStr Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
title_full_unstemmed Enhanced coproduction of astaxanthin and lipids by the green microalga Chromochloris zofingiensis: Selected phytohormones as positive stimulators
title_sort enhanced coproduction of astaxanthin and lipids by the green microalga chromochloris zofingiensis: selected phytohormones as positive stimulators
publisher Elsevier
publishDate 2020
url http://eprints.um.edu.my/15239/
https://doi.org/10.1016/j.biortech.2019.122242
_version_ 1651867365641551872
score 13.211869

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