Impact of bleaching on subcritical water- and Formosolv-pretreated tulip tree to enhance enzyme accessibility.
Bioresour Technol
; 145: 128-32, 2013 Oct.
Article
em En
| MEDLINE
| ID: mdl-23566470
ABSTRACT
A novel method was developed for fractionating cellulose microfibrils from forest residue (tulip tree sawdust) to enhance cellulose digestibility, particularly at minimum enzyme loadings. This method involved three main stages selective hemicellulose solubilization by subcritical water (SCW) pretreatment, delignification of the SCW-pretreated solids using the Formosolv process, and deformylation/bleaching of the cellulose pulp with alkaline hydrogen peroxide solution. This process produced nearly 98% white cellulose microfibrils with 23-fold higher conversion to glucose as compared to the raw substrate after 72 h of enzymatic hydrolysis. This study showed that cellulose swelling had the greatest effect on the enzymatic hydrolysis efficiency of delignified pulp obtained by the Formosolv process.
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MEDLINE
Assunto principal:
Polissacarídeos
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Madeira
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Celulose
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Liriodendron
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Biocombustíveis
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Fracionamento Químico
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Lignina
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article