Influence of feedstock source on the development of polyhydroxyalkanoates-producing mixed microbial cultures in continuously stirred tank reactors
Articolo
Data di Pubblicazione:
2023
Citazione:
Influence of feedstock source on the development of polyhydroxyalkanoates-producing mixed microbial cultures in continuously stirred tank reactors / E. Clagnan, F. Adani. - In: NEW BIOTECHNOLOGY. - ISSN 1871-6784. - 76:(2023 Sep 25), pp. 90-97. [10.1016/j.nbt.2023.05.005]
Abstract:
Polyhydroxyalkanoates (PHAs) are the new frontier of bioplastic production; however, research is needed to develop and characterise efficient mixed microbial communities (MMCs) for their application with a multifeedstock approach. Here, the performance and composition of six MMCs developed from the same inoculum on different feedstocks were investigated through Illumina sequencing to understand community development and identify possible redundancies in terms of genera and PHA metabolism. High PHA production efficiencies (>80% mg CODPHA mg-1 CODOA-consumed) were seen across all samples, but differences in the organic acids (OAs) composition led to different ratios of the monomers poly(3-hydroxybutyrate) (3HB) to poly(3-hydroxyvalerate) (3HV). Communities differed across all feedstocks, with enrichments in specific PHA-producing genera, but analysis of potential enzymatic activity identified a certain degree of functional redundancy, possibly leading to the general high efficiency seen in PHA production from all feedstocks. Leading PHAs producers across all feedstocks were identified in genera such as Thauera, Leadbetterella, Neomegalonema and Amaricoccus.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Anaerobic digestion; Dark fermentation; Feedstock change; Mixed microbial cultures; Organic acids; Polyhydroxyalkanoates (PHAs)
Elenco autori:
E. Clagnan, F. Adani
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