Dynamics of PHA-Accumulating Bacterial Communities Fed with Lipid-Rich Liquid Effluents from Fish-Canning Industries.
PHA accumulation
bacterial diversity
bioplastics
fish-canning WWTP
mixed microbial cultures
network correlation analysis
sequencing batch reactors
Journal
Polymers
ISSN: 2073-4360
Titre abrégé: Polymers (Basel)
Pays: Switzerland
ID NLM: 101545357
Informations de publication
Date de publication:
29 Mar 2022
29 Mar 2022
Historique:
received:
04
03
2022
revised:
22
03
2022
accepted:
25
03
2022
entrez:
12
4
2022
pubmed:
13
4
2022
medline:
13
4
2022
Statut:
epublish
Résumé
The biosynthesis of polyhydroxyalkanoates (PHAs) from industrial wastes by mixed microbial cultures (MMCs) enriched in PHA-accumulating bacteria is a promising technology to replace petroleum-based plastics. However, the populations' dynamics in the PHA-accumulating MMCs are not well known. Therefore, the main objective of this study was to address the shifts in the size and structure of the bacterial communities in two lab-scale sequencing batch reactors (SBRs) fed with fish-canning effluents and operated under non-saline (SBR-N, 0.5 g NaCl/L) or saline (SBR-S, 10 g NaCl/L) conditions, by using a combination of quantitative PCR and Illumina sequencing of bacterial 16S rRNA genes. A double growth limitation (DGL) strategy, in which nitrogen availability was limited and uncoupled to carbon addition, strongly modulated the relative abundances of the PHA-accumulating bacteria, leading to an increase in the accumulation of PHAs, independently of the saline conditions (average 9.04 wt% and 11.69 wt%, maximum yields 22.03 wt% and 26.33% SBR-N and SBR-S, respectively). On the other hand, no correlations were found among the PHAs accumulation yields and the absolute abundances of total
Identifiants
pubmed: 35406269
pii: polym14071396
doi: 10.3390/polym14071396
pmc: PMC9003127
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : Spanish Ministry of Science and Innovation: TREASURE-MICROSALT project
ID : CTQ2017-83225-C2-2-R
Organisme : Spanish Ministry of Science and Innovation: ECOPOLYVER-MACROPOLYVER project
ID : PID2020-112550RC22
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