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Cellulose nanofibers production using a set of recombinant enzymes.

Authors :
Rossi BR
Pellegrini VOA
Cortez AA
Chiromito EMS
Carvalho AJF
Pinto LO
Rezende CA
Mastelaro VR
Polikarpov I
Source :
Carbohydrate polymers [Carbohydr Polym] 2021 Mar 15; Vol. 256, pp. 117510. Date of Electronic Publication: 2020 Dec 15.
Publication Year :
2021

Abstract

Cellulose nanofibers (CNF) are renewable and biodegradable nanomaterials with attractive barrier, mechanical and surface properties. In this work, three different recombinant enzymes: an endoglucanase, a xylanase and a lytic polysaccharide monooxygenase, were combined to enhance cellulose fibrillation and to produce CNF from sugarcane bagasse (SCB). Prior to the enzymatic catalysis, SCB was chemically pretreated by sodium chlorite and KOH, while defibrillation was accomplished via sonication. We obtained much longer (μm scale length) and more thermostable (resisting up to 260 °C) CNFs as compared to the CNFs prepared by TEMPO-mediated oxidation. Our results showed that a cooperative action of the set of hydrolytic and oxidative enzymes can be used as a "green" treatment prior to the sonication step to produce nanofibrillated cellulose with advanced properties.<br /> (Copyright © 2020 Elsevier Ltd. All rights reserved.)

Details

Language :
English
ISSN :
1879-1344
Volume :
256
Database :
MEDLINE
Journal :
Carbohydrate polymers
Publication Type :
Academic Journal
Accession number :
33483031
Full Text :
https://doi.org/10.1016/j.carbpol.2020.117510