Dynamics of Microbial Communities in Phototrophic Polyhydroxyalkanoate Accumulating Cultures.

ABSTRACT: Phototrophic mixed cultures (PMC) are versatile systems which can be applied for waste streams, valorisation and production of added-value compounds, such as polyhydroxyalkanoates (PHA). This work evaluates the influence of different operational conditions on the bacterial communities reported in PMC systems with PHA production capabilities. Eleven PMCs, fed either with acetate or fermented wastewater, and selected under either feast and famine (FF) or permanent feast (PF) regimes, were evaluated. Overall, results identified Chromatiaceae members as the main phototrophic PHA producers, along with Rhodopseudomonas, Rhodobacter and Rhizobium. The findings show that Chromatiaceae were favoured under operating conditions with high carbon concentrations, and particularly under the PF regime. In

SUBMITTER: Almeida JR 

PROVIDER: S-EPMC8874877 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature