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Exploring the effects of treatments with carbohydrases to obtain a high-cellulose content pulp from a non-wood alkaline pulp

Carbohydrate polymers, 2015-11, Vol.133, p.302 [Peer Reviewed Journal]

Copyright © 2015 Elsevier Ltd. All rights reserved. ;info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 0144-8617 ;EISSN: 1879-1344 ;DOI: 10.1016/j.carbpol.2015.07.016 ;PMID: 26344285

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Title:
Exploring the effects of treatments with carbohydrases to obtain a high-cellulose content pulp from a non-wood alkaline pulp
Author: Beltramino, Facundo ; Valls, Cristina ; Vidal, Teresa ; Roncero, M Blanca
Subjects: Agave - chemistry ; Biocatalysis ; Carbohydrase ; Carbohydrases ; Cellulose ; Cellulose - chemistry ; Cellulose - isolation & purification ; Cel·lulosa ; Cel·lulosa per a paper ; Endo-1,4-beta Xylanases - metabolism ; Endoglucanase ; Enginyeria paperera ; Enzymatic treatment ; Glycoside Hydrolases - metabolism ; High-cellulose content ; Hydrolysis ; Investigació ; Non-wood pulp ; Pasta paperera ; Polpa de fusta ; Sodium Hydroxide - chemistry ; Wood-pulp ; Xylanase ; Xylanases ; Àrees temàtiques de la UPC
Is Part Of: Carbohydrate polymers, 2015-11, Vol.133, p.302
Description: In this work, treatments with a xylanase (X) and carbohydrases mixture (Cx) were applied on a TCF bleached sisal pulp in order to obtain high-cellulose content fibers applicable on a wide range of uses. A limit of ≈12% w/w final content in hemicelluloses was found regardless of the enzymatic treatment assessed. An extraction with 4% and 9% w/v NaOH was performed for further hemicelluloses removal. We found that NaOH dose could be strongly reduced if combined with Cx or Cx+X treatments. Also, if necessary, a stronger reduction could be obtained with 9% w/v NaOH, which was found to be boosted in a 14% if performed after a treatment with Cx. An end-product with a low content in xylans (≈2.9% w/w) and in HexA (5.8μmol/odp) was obtained. Pulp Fock solubility was also increased (≈30%) by enzymatic treatments. HPLC analysis of effluents provided useful information of enzymatic catalytic mechanisms.
Publisher: England
Language: English
Identifier: ISSN: 0144-8617
EISSN: 1879-1344
DOI: 10.1016/j.carbpol.2015.07.016
PMID: 26344285
Source: Recercat

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Exploring the effects of treatments with carbohydrases to obtain a high-cellulose content pulp from a non-wood alkaline pulp

Copyright © 2015 Elsevier Ltd. All rights reserved. ;info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 0144-8617 ;EISSN: 1879-1344 ;DOI: 10.1016/j.carbpol.2015.07.016 ;PMID: 26344285

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