Multimodal characterization of acid-pretreated poplar reveals spectral and structural parameters strongly correlate with saccharification - Archive ouverte HAL Access content directly
Journal Articles Bioresource Technology Year : 2019

Multimodal characterization of acid-pretreated poplar reveals spectral and structural parameters strongly correlate with saccharification

(1) , (1) , (1) , (1)
1

Abstract

Lignocellulose biomass can be transformed into sustainable chemicals, materials and energy but its natural recalcitrance requires the use of pretreatment to enhance subsequent catalytic steps. Dilute acid pretreatment is one of the most common and efficient ones, however its impact has not yet been investigated simultaneously at nano- and cellular-scales. Poplar samples have been pretreated by dilute acid at different controlled severities, then characterized by combined structural and spectral techniques (scanning electron microscopy, confocal microscopy, autofluorescence, fluorescence lifetime, Raman). Results show that pretreatment favours lignin depolymerization until severity of 2.4-2.5 while at severity of 2.7 lignin seems to repolymerize as revealed by broadening of autofluorescence spectrum and strong decrease in fluorescence lifetime. Importantly, both nanoscale and cellular-scale markers can predict hydrolysis yield of pretreated samples, highlighting some connections in the multiscale recalcitrance of lignocellulose.
Fichier principal
Vignette du fichier
S0960852419312453.pdf (1.04 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-02623521 , version 1 (20-07-2022)

Licence

Attribution - NonCommercial - CC BY 4.0

Identifiers

Cite

Aya Zoghlami, Yassin Refahi, Christine Terryn, Gabriel Paës. Multimodal characterization of acid-pretreated poplar reveals spectral and structural parameters strongly correlate with saccharification. Bioresource Technology, 2019, 293, ⟨10.1016/j.biortech.2019.122015⟩. ⟨hal-02623521⟩
18 View
7 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More