Fermentable sugars recovery from grape stalks for bioethanol production

[EN]Three different processes were investigated for the recovery of fermentable sugars from grape stalks: autohydrolysis at 121 ºC before and after a pre-washing step and acid hydrolysis (2% H2SO4 w/w) after a pre-washing step. Moreover, optimal conditions of a charcoal-based purification process we...

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Authors: Egüés Artola, Itziar, Serrano Cantador, Luis, Amendola, Danila, De Faveri, D. M., Spigno, Giorgia, Labidi Bouchrika, Jalel
Format: article
Publication Date:2013
Country:España
Institution:Universidad del País Vasco
Repository:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/65386
Online Access:http://hdl.handle.net/10810/65386
Access Level:Open access
Keyword:grape stalks
hydrolysis
sugars
purification
fermentation
ethanol
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spelling Fermentable sugars recovery from grape stalks for bioethanol productionEgüés Artola, ItziarSerrano Cantador, LuisAmendola, DanilaDe Faveri, D. M.Spigno, GiorgiaLabidi Bouchrika, Jalelgrape stalkshydrolysissugarspurificationfermentationethanol[EN]Three different processes were investigated for the recovery of fermentable sugars from grape stalks: autohydrolysis at 121 ºC before and after a pre-washing step and acid hydrolysis (2% H2SO4 w/w) after a pre-washing step. Moreover, optimal conditions of a charcoal-based purification process were determined by experimental design. All hydrolysates, with their corresponding synthetic liquors were used as fermentation substrates for the production of metabolites by the yeast: Debaryomyces nepalensis NCYC 1026. The main fermentation product was ethanol, where a maximum production of 20.84 g/l, a conversion yield of 0.35 g ethanol/g monomeric sugars and a productivity of 0.453 g/l h were obtained from non-purified autohydrolysate liquor. In all cases, ethanol production and cell growth were better in nonpurified liquors than in synthetic liquors. These results could be influenced by the presence of other sugars in the hydrolysates, with higher concentration in non-purified ones.The authors would like to thank the Juan de la Cierva program (JCI-2011-09399) of Spanish Ministry of Science and Innovation, Department of Education, Universities and Investigation of the Basque Government (Grant of I.E., ref BFI09.164), Agrisystem Doctoral School of the Università Cattolica del Sacro Cuore, Italy– Spain Integrated Actions Program (project IT2009-0054) and Pro- getto Ager grant no 2010-2222 for supporting this workElsevier202420242013info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/65386reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoInglésinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/3.0/es/(c) 2013 Elsevier under Atribución-NoComercial-SinDerivadas 4.0oai:addi.ehu.eus:10810/653862026-06-18T09:23:17Z
dc.title.none.fl_str_mv Fermentable sugars recovery from grape stalks for bioethanol production
title Fermentable sugars recovery from grape stalks for bioethanol production
spellingShingle Fermentable sugars recovery from grape stalks for bioethanol production
Egüés Artola, Itziar
grape stalks
hydrolysis
sugars
purification
fermentation
ethanol
title_short Fermentable sugars recovery from grape stalks for bioethanol production
title_full Fermentable sugars recovery from grape stalks for bioethanol production
title_fullStr Fermentable sugars recovery from grape stalks for bioethanol production
title_full_unstemmed Fermentable sugars recovery from grape stalks for bioethanol production
title_sort Fermentable sugars recovery from grape stalks for bioethanol production
dc.creator.none.fl_str_mv Egüés Artola, Itziar
Serrano Cantador, Luis
Amendola, Danila
De Faveri, D. M.
Spigno, Giorgia
Labidi Bouchrika, Jalel
author Egüés Artola, Itziar
author_facet Egüés Artola, Itziar
Serrano Cantador, Luis
Amendola, Danila
De Faveri, D. M.
Spigno, Giorgia
Labidi Bouchrika, Jalel
author_role author
author2 Serrano Cantador, Luis
Amendola, Danila
De Faveri, D. M.
Spigno, Giorgia
Labidi Bouchrika, Jalel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv grape stalks
hydrolysis
sugars
purification
fermentation
ethanol
topic grape stalks
hydrolysis
sugars
purification
fermentation
ethanol
description [EN]Three different processes were investigated for the recovery of fermentable sugars from grape stalks: autohydrolysis at 121 ºC before and after a pre-washing step and acid hydrolysis (2% H2SO4 w/w) after a pre-washing step. Moreover, optimal conditions of a charcoal-based purification process were determined by experimental design. All hydrolysates, with their corresponding synthetic liquors were used as fermentation substrates for the production of metabolites by the yeast: Debaryomyces nepalensis NCYC 1026. The main fermentation product was ethanol, where a maximum production of 20.84 g/l, a conversion yield of 0.35 g ethanol/g monomeric sugars and a productivity of 0.453 g/l h were obtained from non-purified autohydrolysate liquor. In all cases, ethanol production and cell growth were better in nonpurified liquors than in synthetic liquors. These results could be influenced by the presence of other sugars in the hydrolysates, with higher concentration in non-purified ones.
publishDate 2013
dc.date.none.fl_str_mv 2013
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/65386
url http://hdl.handle.net/10810/65386
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
(c) 2013 Elsevier under Atribución-NoComercial-SinDerivadas 4.0
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/3.0/es/
(c) 2013 Elsevier under Atribución-NoComercial-SinDerivadas 4.0
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405942022406144
score 15,301603

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