Document Detail


Effects of different acid hydrolyses on the conversion of sweet sorghum bagasse into C5 and C6 sugars and yeast inhibitors using response surface methodology.
MedLine Citation:
PMID:  22728203     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Two different diluted acid pretreatments (sulfuric and hydrochloric acid) and one mixture of these acids were tested in sweet sorghum bagasse and analyzed through surface response methodologies. The response variables were C5 and C6 sugars and inhibitors (acetic acid, 5-hydroxymethylfurfural, and furfural). Results indicated that the three different pretreatments yielded similar amounts of total potentially fermentable sugars. The proposed acid hydrolysis schemes liberated 56-57% of total sugars available in the sweet sorghum bagasse (390-415mg sugar/g bagasse) and 44-61mg total inhibitors/g bagasse. A mild detoxification was effectively used in the optimized hydrolysates, but did not have effect an effect in the HCl/H(2)SO(4) mixture. The acetic acid and HMF significantly decreased in the HCl and H(2)SO(4) detoxified hydrolysates without any significant degradation of sugars. The HCl treatment was a good alternative due to its relatively lower hydrolysis time and adequate generation of C5 and C6 fermentable sugars.
Authors:
Erick Heredia-Olea; Esther Pérez-Carrillo; Sergio O Serna-Saldívar
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-30
Journal Detail:
Title:  Bioresource technology     Volume:  119C     ISSN:  1873-2976     ISO Abbreviation:  -     Publication Date:  2012 May 
Date Detail:
Created Date:  2012-6-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  216-223     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Departamento de Biotecnología e Ingeniería de Alimentos, Centro de Biotecnología, Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur, CP 64849, Monterrey, NL, Mexico.
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