Characterization of microbial communities in anaerobic acidification reactors fed with casein and/or lactose.

ABSTRACT: Protein-rich agro-industrial waste streams are high in organic load and represent a major environmental problem. Anaerobic digestion is an established technology to treat these streams; however, retardation of protein degradation is frequently observed when carbohydrates are present. This study investigated the mechanism of the retardation by manipulating the carbon source fed to a complex anaerobic microbiota and linking the reactor performance to the variation of the microbial community. Two anaerobic acidification reactors were first acclimated either to casein (CAS reactor) or lactose (LAC reactor), and then fed with mixtures of casein and lactose. Results showed that when lactose was present, the microbial community acclimated to casein shifted from mainly Chloroflexi to Proteobacteri

SUBMITTER: Deng Z 

PROVIDER: S-EPMC9468126 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature