Genome-centric metagenomics revealed the effect of pH on the microbiome involved in short-chain fatty acids and ethanol production.
Anaerobic fermentation
Ethanol
Food waste
Microbial community
Short-chain fatty acids
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Jun 2023
Jun 2023
Historique:
received:
01
02
2023
revised:
13
03
2023
accepted:
15
03
2023
medline:
11
4
2023
pubmed:
20
3
2023
entrez:
19
3
2023
Statut:
ppublish
Résumé
Added-value chemicals production via food waste (FWs) valorization using open-mixed cultures is an emerging approach to replace petrochemical-based compounds. Nevertheless, the effects of operational parameters on the product spectrum remain uncertain given the wide number of co-occurring species and metabolisms. In this study, the identification of 58 metagenome-assembled genomes and their investigation assessed the effect of slight pH variations on microbial dynamics and the corresponding functions when FWs were subjected to anaerobic fermentation (AF) in 1-L continuous stirred tank reactors at 25 °C. The initial pH of 6.5 promoted a microbial community involved in acetate, butyrate and ethanol production, mediated by Bifidobacterium subtile IE007 and Eubacteriaceae IE027 as main species. A slight pH decrease to 6.1 shaped microbial functions that resulted in caproate and H
Identifiants
pubmed: 36934910
pii: S0960-8524(23)00346-2
doi: 10.1016/j.biortech.2023.128920
pii:
doi:
Substances chimiques
Fatty Acids
0
Ethanol
3K9958V90M
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
128920Informations de copyright
Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.