Mechanisms of promotion in the heterotrophic growth of Chlorella vulgaris by the combination of sodium acetate and hydrolysate of broken rice.

Cai, Y; Zhai, L; Wu, K; Li, Z; Gu, Z; Wang, Y; Cui, X; Zhou, T; Ruan, R; Liu, T; Liu, Y; Zhang, Q

Mechanisms of promotion in the heterotrophic growth of Chlorella vulgaris by the combination of sodium acetate and hydrolysate of broken rice.

Cai, Y Zhai, L Wu, K Li, Z Gu, Z Wang, Y Cui, X Zhou, T Ruan, R Liu, T Liu, Y Zhang, Q

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Publisher:: Elsevier BV
Publication Type:: Journal Article
Citation:: Bioresour Technol, 2022, 364, pp. 127965
Issue Date:: 2022-09-14

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Field	Value	Language
dc.contributor.author	Cai, Y
dc.contributor.author	Zhai, L
dc.contributor.author	Wu, K
dc.contributor.author	Li, Z
dc.contributor.author	Gu, Z
dc.contributor.author	Wang, Y
dc.contributor.author	Cui, X
dc.contributor.author	Zhou, T
dc.contributor.author	Ruan, R
dc.contributor.author	Liu, T
dc.contributor.author	Liu, Y
dc.contributor.author	Zhang, Q
dc.date.accessioned	2023-01-22T23:58:27Z
dc.date.available	2022-09-09
dc.date.available	2023-01-22T23:58:27Z
dc.date.issued	2022-09-14
dc.identifier.citation	Bioresour Technol, 2022, 364, pp. 127965
dc.identifier.issn	0960-8524
dc.identifier.issn	1873-2976
dc.identifier.uri	http://hdl.handle.net/10453/165335
dc.description.abstract	In order to reduce the culture cost and increase the growth rate of heterotrophic Chlorella vulgaris, the effects of hydrolysate of broken rice (HBR) combined with sodium acetate on its growth were evaluated. Results showed that the addition of 0.4 g/L of sodium acetate could stabilize the pH of the medium via the co-metabolism of acetate, ammonia and nitrate by Chlorella vulgaris. Meanwhile, isocitrate lyase activity increased threefold, which further promoted the glyoxylate cycle and the citric acid cycle, which finally provided more energy and metabolic precursors for cell growth. The biomass production (5.04 g/L), biomass productivity (1.65 g/L/day) and protein content (64.14 %) were 1.56, 1.81 and 1.77 times higher than the glucose group. This study demonstrated that HBR combined with sodium acetate could effectively promote the heterotrophic metabolism of microalgae, which provided scientific basis and guidance for industrial production of high-value products using Chlorella vulgaris as a fermentation platform.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	Elsevier BV
dc.relation.ispartof	Bioresour Technol
dc.relation.isbasedon	10.1016/j.biortech.2022.127965
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Biotechnology
dc.title	Mechanisms of promotion in the heterotrophic growth of Chlorella vulgaris by the combination of sodium acetate and hydrolysate of broken rice.
dc.type	Journal Article
utslib.citation.volume	364
utslib.location.activity	England
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
utslib.copyright.status	closed_access	*
dc.date.updated	2023-01-22T23:58:26Z
pubs.publication-status	Published online
pubs.volume	364

Abstract:

In order to reduce the culture cost and increase the growth rate of heterotrophic Chlorella vulgaris, the effects of hydrolysate of broken rice (HBR) combined with sodium acetate on its growth were evaluated. Results showed that the addition of 0.4 g/L of sodium acetate could stabilize the pH of the medium via the co-metabolism of acetate, ammonia and nitrate by Chlorella vulgaris. Meanwhile, isocitrate lyase activity increased threefold, which further promoted the glyoxylate cycle and the citric acid cycle, which finally provided more energy and metabolic precursors for cell growth. The biomass production (5.04 g/L), biomass productivity (1.65 g/L/day) and protein content (64.14 %) were 1.56, 1.81 and 1.77 times higher than the glucose group. This study demonstrated that HBR combined with sodium acetate could effectively promote the heterotrophic metabolism of microalgae, which provided scientific basis and guidance for industrial production of high-value products using Chlorella vulgaris as a fermentation platform.

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http://hdl.handle.net/10453/165335