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Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii
BACKGROUND: Propionibacterium freudenreichii is used in biotechnological applications to produce vitamin B(12). Although cultured mainly in anaerobic conditions, microaerobic conditions can greatly enhance biomass formation in P. freudenreichii. Since B(12) yields may be coupled to biomass formation...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9617374/ https://www.ncbi.nlm.nih.gov/pubmed/36307780 http://dx.doi.org/10.1186/s12934-022-01945-8 |
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author | Dank, Alexander Biel, Gabriela Abee, Tjakko Smid, Eddy J. |
author_facet | Dank, Alexander Biel, Gabriela Abee, Tjakko Smid, Eddy J. |
author_sort | Dank, Alexander |
collection | PubMed |
description | BACKGROUND: Propionibacterium freudenreichii is used in biotechnological applications to produce vitamin B(12). Although cultured mainly in anaerobic conditions, microaerobic conditions can greatly enhance biomass formation in P. freudenreichii. Since B(12) yields may be coupled to biomass formation, microaerobic conditions show great potential for increasing B(12) yields in P. freudenreichii. RESULTS: Here we show biomass formation increases 2.7 times for P. freudenreichii grown in microaerobic conditions on lactate versus anaerobic conditions (1.87 g/L vs 0.70 g/L). Consumption of lactate in microaerobic conditions resulted first in production of pyruvate, propionate and acetate. When lactate was depleted, pyruvate and propionate were oxidised with a concomitant sixfold increase in the B(12) titer compared to anaerobic conditions, showing potential for propionate and pyruvate as carbon sources for B(12) production. Consequently, a fed-batch reactor with anaerobically precultured lactate-grown cells was fed propionate in microaerobic conditions resulting in biomass increase and production of B(12). Vitamin yields increased from 0.3 [Formula: see text] B(12) per mmol lactate in anaerobic conditions to 2.4 [Formula: see text] B(12) per mmol lactate and 8.4 [Formula: see text] B(12) per mmol propionate in microaerobic conditions. Yield per cell dry weight (CDW) increased from 41 [Formula: see text] per g CDW in anaerobic conditions on lactate to 92 [Formula: see text] per g CDW on lactate and 184 [Formula: see text] per g CDW on propionate in microaerobic conditions. CONCLUSIONS: Here we have shown both B(12) yield per substrate and per CDW were highest on cells oxidising propionate in microaerobic conditions, showing the potential of propionate for biotechnological production of vitamin B(12) by P. freudenreichii. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12934-022-01945-8. |
format | Online Article Text |
id | pubmed-9617374 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-96173742022-10-30 Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii Dank, Alexander Biel, Gabriela Abee, Tjakko Smid, Eddy J. Microb Cell Fact Research BACKGROUND: Propionibacterium freudenreichii is used in biotechnological applications to produce vitamin B(12). Although cultured mainly in anaerobic conditions, microaerobic conditions can greatly enhance biomass formation in P. freudenreichii. Since B(12) yields may be coupled to biomass formation, microaerobic conditions show great potential for increasing B(12) yields in P. freudenreichii. RESULTS: Here we show biomass formation increases 2.7 times for P. freudenreichii grown in microaerobic conditions on lactate versus anaerobic conditions (1.87 g/L vs 0.70 g/L). Consumption of lactate in microaerobic conditions resulted first in production of pyruvate, propionate and acetate. When lactate was depleted, pyruvate and propionate were oxidised with a concomitant sixfold increase in the B(12) titer compared to anaerobic conditions, showing potential for propionate and pyruvate as carbon sources for B(12) production. Consequently, a fed-batch reactor with anaerobically precultured lactate-grown cells was fed propionate in microaerobic conditions resulting in biomass increase and production of B(12). Vitamin yields increased from 0.3 [Formula: see text] B(12) per mmol lactate in anaerobic conditions to 2.4 [Formula: see text] B(12) per mmol lactate and 8.4 [Formula: see text] B(12) per mmol propionate in microaerobic conditions. Yield per cell dry weight (CDW) increased from 41 [Formula: see text] per g CDW in anaerobic conditions on lactate to 92 [Formula: see text] per g CDW on lactate and 184 [Formula: see text] per g CDW on propionate in microaerobic conditions. CONCLUSIONS: Here we have shown both B(12) yield per substrate and per CDW were highest on cells oxidising propionate in microaerobic conditions, showing the potential of propionate for biotechnological production of vitamin B(12) by P. freudenreichii. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1186/s12934-022-01945-8. BioMed Central 2022-10-28 /pmc/articles/PMC9617374/ /pubmed/36307780 http://dx.doi.org/10.1186/s12934-022-01945-8 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ (https://creativecommons.org/publicdomain/zero/1.0/) ) applies to the data made available in this article, unless otherwise stated in a credit line to the data. |
spellingShingle | Research Dank, Alexander Biel, Gabriela Abee, Tjakko Smid, Eddy J. Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title | Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title_full | Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title_fullStr | Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title_full_unstemmed | Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title_short | Microaerobic metabolism of lactate and propionate enhances vitamin B(12) production in Propionibacterium freudenreichii |
title_sort | microaerobic metabolism of lactate and propionate enhances vitamin b(12) production in propionibacterium freudenreichii |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9617374/ https://www.ncbi.nlm.nih.gov/pubmed/36307780 http://dx.doi.org/10.1186/s12934-022-01945-8 |
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