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Enabling large-scale production of algal oil in continuous output mode

Steve Slocombe, Maria Huete-Ortega, Rahul Vijay Kapoore, Katarzyna Okurowska, Alison Mair, John G. Day, Michele S. Stanley, Seetharaman Vaidyanathan

iScience, Volume: 24, Issue: 7, Start page: 102743

Swansea University Author: Steve Slocombe

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DOI (Published version): 10.1016/j.isci.2021.102743

Abstract

Large-scale algal oil production requires continuous outputs and a trade-off between growth and oil content. Two unrelated marine algae (Nannochloropsis oceanica [CCAP 849/10] and Chlorella vulgaris [CCAP 211/21A]) that showed high oil production under batch culture were studied under controlled sem...

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Published in: iScience
ISSN: 2589-0042
Published: Elsevier BV 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa65455
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spelling v2 65455 2024-01-17 Enabling large-scale production of algal oil in continuous output mode 4a1ea486a78ed357efdfa053a277ae40 Steve Slocombe Steve Slocombe true false 2024-01-17 SBI Large-scale algal oil production requires continuous outputs and a trade-off between growth and oil content. Two unrelated marine algae (Nannochloropsis oceanica [CCAP 849/10] and Chlorella vulgaris [CCAP 211/21A]) that showed high oil production under batch culture were studied under controlled semicontinuous cultivation conditions. Three essential attributes maximized oil productivity: (i) downregulation of cell size to maximize light absorption under N limitation; (ii) low nutrient-depletion thresholds to trigger oil induction; (iii) a means of carbohydrate suppression in favor of oil. N. oceanica responded better to input N/P variations and is more suited to continuous oil production. A low N/P ratio was effective in both suppressing carbohydrate and reducing cell size concomitant with oil production. In C. vulgaris, nutrient starvation thresholds for oil were higher and carbohydrate was preferentially induced, which impeded stress-level optimization for oil. These differences, which impact continuous oil production at scale, are driven by species adaptation to specific marine habitats. Journal Article iScience 24 7 102743 Elsevier BV 2589-0042 23 7 2021 2021-07-23 10.1016/j.isci.2021.102743 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University We are very grateful to Debra Brennan and Elaine Mitchell for technical assistance at SAMS. All other members of the project consortium, who did not directly participate in this study, are gratefully acknowledged for their indirect contributions. This work is a result of the UKRI BBSRC-DBT funded UK-India SuBB project (BB/K020633/1). S.V. also acknowledges financial support from UKRI EPSRC (EP/E036252/1) to Sheffield. 2024-03-21T10:16:16.8033249 2024-01-17T15:53:19.3729324 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Steve Slocombe 1 Maria Huete-Ortega 2 Rahul Vijay Kapoore 3 Katarzyna Okurowska 4 Alison Mair 5 John G. Day 6 Michele S. Stanley 7 Seetharaman Vaidyanathan 8 65455__29773__5bf8248666d04ef5ba4eb51f626b035e.pdf 65455_VoR.pdf 2024-03-21T10:14:21.0718468 Output 5001199 application/pdf Version of Record true Copyright: 2021 The Authors. This is an open access article under the CC BY-NC-ND license true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Enabling large-scale production of algal oil in continuous output mode
spellingShingle Enabling large-scale production of algal oil in continuous output mode
Steve Slocombe
title_short Enabling large-scale production of algal oil in continuous output mode
title_full Enabling large-scale production of algal oil in continuous output mode
title_fullStr Enabling large-scale production of algal oil in continuous output mode
title_full_unstemmed Enabling large-scale production of algal oil in continuous output mode
title_sort Enabling large-scale production of algal oil in continuous output mode
author_id_str_mv 4a1ea486a78ed357efdfa053a277ae40
author_id_fullname_str_mv 4a1ea486a78ed357efdfa053a277ae40_***_Steve Slocombe
author Steve Slocombe
author2 Steve Slocombe
Maria Huete-Ortega
Rahul Vijay Kapoore
Katarzyna Okurowska
Alison Mair
John G. Day
Michele S. Stanley
Seetharaman Vaidyanathan
format Journal article
container_title iScience
container_volume 24
container_issue 7
container_start_page 102743
publishDate 2021
institution Swansea University
issn 2589-0042
doi_str_mv 10.1016/j.isci.2021.102743
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description Large-scale algal oil production requires continuous outputs and a trade-off between growth and oil content. Two unrelated marine algae (Nannochloropsis oceanica [CCAP 849/10] and Chlorella vulgaris [CCAP 211/21A]) that showed high oil production under batch culture were studied under controlled semicontinuous cultivation conditions. Three essential attributes maximized oil productivity: (i) downregulation of cell size to maximize light absorption under N limitation; (ii) low nutrient-depletion thresholds to trigger oil induction; (iii) a means of carbohydrate suppression in favor of oil. N. oceanica responded better to input N/P variations and is more suited to continuous oil production. A low N/P ratio was effective in both suppressing carbohydrate and reducing cell size concomitant with oil production. In C. vulgaris, nutrient starvation thresholds for oil were higher and carbohydrate was preferentially induced, which impeded stress-level optimization for oil. These differences, which impact continuous oil production at scale, are driven by species adaptation to specific marine habitats.
published_date 2021-07-23T10:16:14Z
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score 11.013148

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