Bioreactor performance parameters for an industrially-promising methanotroph Methylomicrobium buryatense 5GB1
Abstract
Methane is a feedstock of interest for the future, both from natural gas and from renewable biogas sources. Methanotrophic bacteria have the potential to enable commercial methane bioconversion to value-added products such as fuels and chemicals. A strain of interest for such applications is Methylomicrobium buryatense 5GB1, due to its robust growth characteristics. But, to take advantage of the potential of this methanotroph, it is important to generate comprehensive bioreactor-based datasets for different growth conditions to compare bioprocess parameters. The datasets of growth parameters, gas utilization rates, and products (total biomass, extracted fatty acids, glycogen, excreted acids) were obtained for cultures of M. buryatense 5GB1 grown in continuous culture under methane limitation and O2 limitation conditions. Additionally, experiments were performed involving unrestricted batch growth conditions with both methane and methanol as substrate. All four growth conditions show significant differences. The most notable changes are the high glycogen content and high formate excretion for cells grown on methanol (batch), and high O2:CH4 utilization ratio for cells grown under methane limitation. The results presented here represent the most comprehensive published bioreactor datasets for a gamma-proteobacterial methanotroph. This information shows that metabolism by M. buryatense 5GB1 differs significantly for each of the fourmore »
- Authors:
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1618796
- Alternate Identifier(s):
- OSTI ID: 1233686
- Report Number(s):
- NREL/JA-5100-65607
Journal ID: ISSN 1475-2859; 182; PII: 372
- Grant/Contract Number:
- AR0000350; AC36-08GO28308
- Resource Type:
- Journal Article: Published Article
- Journal Name:
- Microbial Cell Factories
- Additional Journal Information:
- Journal Name: Microbial Cell Factories Journal Volume: 14 Journal Issue: 1; Journal ID: ISSN 1475-2859
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; methanotroph; bioreactors; continuous culture; methane; gas-to-liquid
Citation Formats
Gilman, Alexey, Laurens, Lieve M., Puri, Aaron W., Chu, Frances, Pienkos, Philip T., and Lidstrom, Mary E. Bioreactor performance parameters for an industrially-promising methanotroph Methylomicrobium buryatense 5GB1. United Kingdom: N. p., 2015.
Web. doi:10.1186/s12934-015-0372-8.
Gilman, Alexey, Laurens, Lieve M., Puri, Aaron W., Chu, Frances, Pienkos, Philip T., & Lidstrom, Mary E. Bioreactor performance parameters for an industrially-promising methanotroph Methylomicrobium buryatense 5GB1. United Kingdom. https://doi.org/10.1186/s12934-015-0372-8
Gilman, Alexey, Laurens, Lieve M., Puri, Aaron W., Chu, Frances, Pienkos, Philip T., and Lidstrom, Mary E. 2015.
"Bioreactor performance parameters for an industrially-promising methanotroph Methylomicrobium buryatense 5GB1". United Kingdom. https://doi.org/10.1186/s12934-015-0372-8.
@article{osti_1618796,
title = {Bioreactor performance parameters for an industrially-promising methanotroph Methylomicrobium buryatense 5GB1},
author = {Gilman, Alexey and Laurens, Lieve M. and Puri, Aaron W. and Chu, Frances and Pienkos, Philip T. and Lidstrom, Mary E.},
abstractNote = {Methane is a feedstock of interest for the future, both from natural gas and from renewable biogas sources. Methanotrophic bacteria have the potential to enable commercial methane bioconversion to value-added products such as fuels and chemicals. A strain of interest for such applications is Methylomicrobium buryatense 5GB1, due to its robust growth characteristics. But, to take advantage of the potential of this methanotroph, it is important to generate comprehensive bioreactor-based datasets for different growth conditions to compare bioprocess parameters. The datasets of growth parameters, gas utilization rates, and products (total biomass, extracted fatty acids, glycogen, excreted acids) were obtained for cultures of M. buryatense 5GB1 grown in continuous culture under methane limitation and O2 limitation conditions. Additionally, experiments were performed involving unrestricted batch growth conditions with both methane and methanol as substrate. All four growth conditions show significant differences. The most notable changes are the high glycogen content and high formate excretion for cells grown on methanol (batch), and high O2:CH4 utilization ratio for cells grown under methane limitation. The results presented here represent the most comprehensive published bioreactor datasets for a gamma-proteobacterial methanotroph. This information shows that metabolism by M. buryatense 5GB1 differs significantly for each of the four conditions tested. O2 limitation resulted in the lowest relative O2 demand and fed-batch growth on methane the highest. Future studies are needed to understand the metabolic basis of these differences. However, these results suggest that both batch and continuous culture conditions have specific advantages, depending on the product of interest.},
doi = {10.1186/s12934-015-0372-8},
url = {https://www.osti.gov/biblio/1618796},
journal = {Microbial Cell Factories},
issn = {1475-2859},
number = 1,
volume = 14,
place = {United Kingdom},
year = {Mon Nov 16 00:00:00 EST 2015},
month = {Mon Nov 16 00:00:00 EST 2015}
}
Web of Science
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