Lignin intermediates lead to phenyl acid formation and microbial community shifts in meso- and thermophilic batch reactors.

ABSTRACT:

Background

Lignin intermediates resulting from lignocellulose degradation have been suspected to hinder anaerobic mineralisation of organic materials to biogas. Phenyl acids like phenylacetate (PAA) are early detectable intermediates during anaerobic digestion (AD) of aromatic compounds. Studying the phenyl acid formation dynamics and concomitant microbial community shifts can help to understand the microbial interdependencies during AD of aromatic compounds and may be beneficial to counteract disturbances.

Results

The length of the aliphatic side chain and chemical structure of the benzene side group(s) had an influence on the methanogenic system. PAA, phenylpropionate (PPA), and phenylbutyrate (PBA) accumulations showed that the respective lignin intermediate was degraded

SUBMITTER: Prem EM 

PROVIDER: S-EPMC7816434 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature