Flow cytometry: a tool for understanding the behaviour of polyhydroxyalkanoate accumulators
Date
Authors
PINTO IBIETA, FERNANDA EMILIA
González, Karina
Salinas, Alejandro
Pinto-Ibieta, Fernanda
Navia, Rodrigo
Liu, Shijie
Cea, Mara
González, Karina
Salinas, Alejandro
Pinto-Ibieta, Fernanda
Navia, Rodrigo
Liu, Shijie
Cea, Mara
Authors
Date
Datos de publicación:
10.1007/s00253-022-12318-x
Keywords
Bioreactors - Flow Cytometry - Mixed Microbial Cultures - Polyhydroxyalkanoates - Carbon - Polyhydroxyalkanoates - Polyhydroxybutyrate - Batch Reactors - Flow Cytometry - Food Supply - Metabolism - Attractive Strategies - Metabolic Activity - Metabolic State - Mixed Microbial Culture - Physiological State - Polyhydroxyalkanoates - Polyhydroxybutyrate - Process Tools - Production Process - Sequencing Batch Reactors - Microorganisms - Carbon - Dissolved Oxygen - Polyhydroxyalkanoic Acid - Polyhydroxybutyrate - Accumulation - Bioreactor - Famine - Flow Cytometry - Microbial Activity - Analytic Method - Article - Bacterial Strain - Carbon Source - Hydraulic Retention Time - Metabolism - Microorganism - Nonhuman - Operation Duration - Solids Retention Time - Waste Water Treatment Plant - Fermentation - Bioreactors - Fermentation - Flow Cytometry
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Abstract
Abstract: The use of mixed microbial cultures (MMCs) is seen as an attractive strategy for polyhydroxyalkanoate (PHA) production. In order to optimize the MMC-PHA production process, tools are required to improve our understanding of the physiological state of the PHA-storing microorganisms within the MMC. In the present study, we explored the use of flow cytometry to analyse the metabolic state and polyhydroxybutyrate (PHB) content of the microorganisms from an MMC-PHA production process. A sequencing batch reactor under a feast and famine regime was used to enrich an MMC with PHB-storing microorganisms. Interestingly, once the PHB-storing microorganisms are selected, the level of PHB accumulation depends largely on the metabolic state of these microorganisms and not exclusively on the consortium composition. These results demonstrate that flow cytometry is a powerful tool to help to understand the PHA storage response of an MMC-PHA production process. Key points: Flow cytometry allows to measure PHB content and metabolic activity over time. Microorganisms showing high PHB content also have high metabolic activity. PHB producers with low metabolic activity show low PHB content. © 2023 Elsevier B.V., All rights reserved.
Description
Keywords
Bioreactors , Flow Cytometry , Mixed Microbial Cultures , Polyhydroxyalkanoates , Carbon , Polyhydroxyalkanoates , Polyhydroxybutyrate , Batch Reactors , Flow Cytometry , Food Supply , Metabolism , Attractive Strategies , Metabolic Activity , Metabolic State , Mixed Microbial Culture , Physiological State , Polyhydroxyalkanoates , Polyhydroxybutyrate , Process Tools , Production Process , Sequencing Batch Reactors , Microorganisms , Carbon , Dissolved Oxygen , Polyhydroxyalkanoic Acid , Polyhydroxybutyrate , Accumulation , Bioreactor , Famine , Flow Cytometry , Microbial Activity , Analytic Method , Article , Bacterial Strain , Carbon Source , Hydraulic Retention Time , Metabolism , Microorganism , Nonhuman , Operation Duration , Solids Retention Time , Waste Water Treatment Plant , Fermentation , Bioreactors , Fermentation , Flow Cytometry
Citation
10.1007/s00253-022-12318-x