Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid
Abstract Background Marine microalga Nannochloropsis is a promising source for the production of renewable and sustainable biodiesel in replacement of depleting petroleum. Other than biodiesel, Nannochloropsis is a green and potential resource for the commercial production of nutraceutical eicosapen...
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ftdoajarticles:oai:doaj.org/article:2653b34451344ee3aafac2d3cc3f6dc5 2023-05-15T14:00:35+02:00 Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid Yongjin He Xiaofei Wang Hehong Wei Jianzhi Zhang Bilian Chen Feng Chen 2019-04-01T00:00:00Z https://doi.org/10.1186/s13068-019-1418-7 https://doaj.org/article/2653b34451344ee3aafac2d3cc3f6dc5 EN eng BMC http://link.springer.com/article/10.1186/s13068-019-1418-7 https://doaj.org/toc/1754-6834 doi:10.1186/s13068-019-1418-7 1754-6834 https://doaj.org/article/2653b34451344ee3aafac2d3cc3f6dc5 Biotechnology for Biofuels, Vol 12, Iss 1, Pp 1-15 (2019) Nannochloropsis sp. biomass Ethanolysis Biodiesel Eicosapentaenoic acid Enrichment Fuel TP315-360 Biotechnology TP248.13-248.65 article 2019 ftdoajarticles https://doi.org/10.1186/s13068-019-1418-7 2022-12-31T02:44:20Z Abstract Background Marine microalga Nannochloropsis is a promising source for the production of renewable and sustainable biodiesel in replacement of depleting petroleum. Other than biodiesel, Nannochloropsis is a green and potential resource for the commercial production of nutraceutical eicosapentaenoic acid (EPA, C20:5). In recent studies, low-value biodiesel can be achieved by transesterification of Nannochloropsis biomass. However, it is undoubtedly wasteful to produce microalgal biodiesel containing EPA from nutritional and economical aspects. A new strategy was addressed and exploited to produce low-value bulky biodiesel along with EPA enrichment via enzymatic ethanolysis of Nannochloropsis biomass with a specific lipase. Results Cellulase pretreatment on Nannochloropsis sp. biomass significantly improved the biodiesel conversion by direct ethanolysis with five enzymes from Candida antarctica (CALA and CALB), Thermomyces lanuginosus (TL), Rhizomucor miehei (RM), and Aspergillus oryzae (PLA). Among these five biocatalysts, CALA was the best suitable enzyme to yield high biodiesel conversion and effectively enrich EPA. After optimization, the maximum biodiesel conversion (46.53–48.57%) was attained by CALA at 8:1 ethanol/biomass ratio (v/w) in 10–15% water content with 10% lipase weight at 35 °C for 72 h. Meanwhile, EPA (60.81%) was highly enriched in microalgae NPLs (neutral lipids and polar lipids), increasing original EPA levels by 1.51-fold. Moreover, this process was re-evaluated with two Nannochloropsis species (IMET1 and Salina 537). Under the optimized conditions, the biodiesel conversions of IMET1 and Salina 537 by CALA were 63.41% and 54.33%, respectively. EPA contents of microalgal NPLs were 50.06% for IMET1 and 53.73% for Salina 537. Conclusion CALA was the potential biocatalyst to discriminate against EPA in the ethanolysis of Nannochloropsis biomass. The biodiesel conversion and EPA enrich efficiency of CALA were greatly dependent on lipidic class and fatty acid compositions of ... Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Biotechnology for Biofuels 12 1 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Nannochloropsis sp. biomass Ethanolysis Biodiesel Eicosapentaenoic acid Enrichment Fuel TP315-360 Biotechnology TP248.13-248.65 |
spellingShingle |
Nannochloropsis sp. biomass Ethanolysis Biodiesel Eicosapentaenoic acid Enrichment Fuel TP315-360 Biotechnology TP248.13-248.65 Yongjin He Xiaofei Wang Hehong Wei Jianzhi Zhang Bilian Chen Feng Chen Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
topic_facet |
Nannochloropsis sp. biomass Ethanolysis Biodiesel Eicosapentaenoic acid Enrichment Fuel TP315-360 Biotechnology TP248.13-248.65 |
description |
Abstract Background Marine microalga Nannochloropsis is a promising source for the production of renewable and sustainable biodiesel in replacement of depleting petroleum. Other than biodiesel, Nannochloropsis is a green and potential resource for the commercial production of nutraceutical eicosapentaenoic acid (EPA, C20:5). In recent studies, low-value biodiesel can be achieved by transesterification of Nannochloropsis biomass. However, it is undoubtedly wasteful to produce microalgal biodiesel containing EPA from nutritional and economical aspects. A new strategy was addressed and exploited to produce low-value bulky biodiesel along with EPA enrichment via enzymatic ethanolysis of Nannochloropsis biomass with a specific lipase. Results Cellulase pretreatment on Nannochloropsis sp. biomass significantly improved the biodiesel conversion by direct ethanolysis with five enzymes from Candida antarctica (CALA and CALB), Thermomyces lanuginosus (TL), Rhizomucor miehei (RM), and Aspergillus oryzae (PLA). Among these five biocatalysts, CALA was the best suitable enzyme to yield high biodiesel conversion and effectively enrich EPA. After optimization, the maximum biodiesel conversion (46.53–48.57%) was attained by CALA at 8:1 ethanol/biomass ratio (v/w) in 10–15% water content with 10% lipase weight at 35 °C for 72 h. Meanwhile, EPA (60.81%) was highly enriched in microalgae NPLs (neutral lipids and polar lipids), increasing original EPA levels by 1.51-fold. Moreover, this process was re-evaluated with two Nannochloropsis species (IMET1 and Salina 537). Under the optimized conditions, the biodiesel conversions of IMET1 and Salina 537 by CALA were 63.41% and 54.33%, respectively. EPA contents of microalgal NPLs were 50.06% for IMET1 and 53.73% for Salina 537. Conclusion CALA was the potential biocatalyst to discriminate against EPA in the ethanolysis of Nannochloropsis biomass. The biodiesel conversion and EPA enrich efficiency of CALA were greatly dependent on lipidic class and fatty acid compositions of ... |
format |
Article in Journal/Newspaper |
author |
Yongjin He Xiaofei Wang Hehong Wei Jianzhi Zhang Bilian Chen Feng Chen |
author_facet |
Yongjin He Xiaofei Wang Hehong Wei Jianzhi Zhang Bilian Chen Feng Chen |
author_sort |
Yongjin He |
title |
Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
title_short |
Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
title_full |
Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
title_fullStr |
Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
title_full_unstemmed |
Direct enzymatic ethanolysis of potential Nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
title_sort |
direct enzymatic ethanolysis of potential nannochloropsis biomass for co-production of sustainable biodiesel and nutraceutical eicosapentaenoic acid |
publisher |
BMC |
publishDate |
2019 |
url |
https://doi.org/10.1186/s13068-019-1418-7 https://doaj.org/article/2653b34451344ee3aafac2d3cc3f6dc5 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Biotechnology for Biofuels, Vol 12, Iss 1, Pp 1-15 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s13068-019-1418-7 https://doaj.org/toc/1754-6834 doi:10.1186/s13068-019-1418-7 1754-6834 https://doaj.org/article/2653b34451344ee3aafac2d3cc3f6dc5 |
op_doi |
https://doi.org/10.1186/s13068-019-1418-7 |
container_title |
Biotechnology for Biofuels |
container_volume |
12 |
container_issue |
1 |
_version_ |
1766269807807692800 |