Solubilization of sugarcane bagasse by mono and cocultures of thermophilic anaerobes with and without cotreatment.
Bioresour Technol
; 406: 130982, 2024 Aug.
Article
de En
| MEDLINE
| ID: mdl-38879055
ABSTRACT
Cotreatment, mechanical disruption of lignocellulosic biomass during microbial fermentation, is a potential alternative to thermochemical pretreatment as a means of increasing the accessibility of lignocellulose to biological attack. Successful implementation of cotreatment requires microbes that can withstand milling, while solubilizing and utilizing carbohydrates from lignocellulose. In this context, cotreatment with thermophilic, lignocellulose-fermenting bacteria has been successfully evaluated for a number of lignocellulosic feedstocks. Here, cotreatment was applied to sugarcane bagasse using monocultures of the cellulose-fermenting Clostridium thermocellum and cocultures with the hemicellulose-fermenting Thermoanaerobacterium thermosaccharolyticum. This resulted in 76 % carbohydrate solubilization (a 1.8-fold increase over non-cotreated controls) on 10 g/L solids loading, having greater effect on the hemicellulose fraction. With cotreatment, fermentation by wild-type cultures at low substrate concentrations increased cumulative product formation by 45 % for the monoculture and 32 % for the coculture. These findings highlight the potential of cotreatment for enhancing deconstruction of sugarcane bagasse using thermophilic bacteria.
Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Solubilité
/
Cellulose
/
Techniques de coculture
/
Saccharum
/
Fermentation
Langue:
En
Journal:
Bioresour Technol
Sujet du journal:
ENGENHARIA BIOMEDICA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Brésil
Pays de publication:
Royaume-Uni