Characterization of Thermophilic Lignocellulolytic Microorganisms in Composting
Identifiers
URI: http://hdl.handle.net/10835/15022
DOI: https://doi.org/10.3389/fmicb.2021.697480
DOI: https://doi.org/10.3389/fmicb.2021.697480
Share
Metadata
Show full item recordAuthor/s
López López, María Josefa; Jurado Rodríguez, Macarena Del Mar; López González, Juan Antonio; Estrella González, Maria José; Martínez Gallardo, María Rosa; [et al.]Date
2021-08-11Abstract
Composting involves the selection of a microbiota capable of resisting the high temperatures generated during the process and degrading the lignocellulose. A deep understanding of the thermophilic microbial community involved in such biotransformation is valuable to improve composting efficiency and to provide thermostable biomass-degrading enzymes for biorefinery. This study investigated the lignocellulose-degrading thermophilic microbial culturome at all the stages of plant waste composting, focusing on the dynamics, enzymes, and thermotolerance of each member of such a community. The results revealed that 58% of holocellulose (cellulose plus hemicellulose) and 7% of lignin were degraded at the end of composting. The whole fungal thermophilic population exhibited lignocellulose-degrading activity, whereas roughly 8–10% of thermophilic bacteria had this trait, although exclusively for hemicellulose degradation (xylan-degrading). Because of the prevalence of both groups, their enzymati...
Palabra/s clave
culturome
xylanase
cellulase
ligninases
laccase
lignin peroxidase
thermotolerance