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Enzymatic hydrolysis and fermentation of pretreated cashew apple bagasse with alkali and diluted sulfuric Acid for bioethanol production.
Appl Biochem Biotechnol. 2009 May; 155(1-3):407-17.AB

Abstract

The aim of this work was to optimize the enzymatic hydrolysis of the cellulose fraction of cashew apple bagasse (CAB) after diluted acid (CAB-H) and alkali pretreatment (CAB-OH), and to evaluate its fermentation to ethanol using Saccharomyces cerevisiae. Glucose conversion of 82 +/- 2 mg/g CAB-H and 730 +/- 20 mg/g CAB-OH was obtained when 2% (w/v) of solid and 30 FPU/g bagasse was used during hydrolysis at 45 degrees C, 2-fold higher than when using 15 FPU/g bagasse, 44 +/- 2 mg/g CAB-H, and 450 +/- 50 mg/g CAB-OH, respectively. Ethanol concentration and productivity, achieved after 6 h of fermentation, were 20.0 +/- 0.2 g L(-1) and 3.33 g L(-1) h(-1), respectively, when using CAB-OH hydrolyzate (initial glucose concentration of 52.4 g L(-1)). For CAB-H hydrolyzate (initial glucose concentration of 17.4 g L(-1)), ethanol concentration and productivity were 8.2 +/- 0.1 g L(-1) and 2.7 g L(-1) h(-1) in 3 h, respectively. Hydrolyzates fermentation resulted in an ethanol yield of 0.38 and 0.47 g/g glucose with pretreated CAB-OH and CAB-H, respectively. Ethanol concentration and productivity, obtained using CAB-OH hydrolyzate, were close to the values obtained in the conventional ethanol fermentation of cashew apple juice or sugar cane juice.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Rocha MV
Departamento de Engenharia Química, Laboratório de Engenharia Bioquímica, Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil. valponterocha@yahoo.com.br
Rodrigues TH
No affiliation info available
de Macedo GR
No affiliation info available
Gonçalves LR
No affiliation info available

MeSH

AlkaliesAnacardiumBeveragesBiotechnologyCelluloseEnergy-Generating ResourcesFermentationGlucoseSaccharomyces cerevisiaeSulfuric Acids

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19031051

Citation

Rocha, Maria Valderez Ponte, et al. "Enzymatic Hydrolysis and Fermentation of Pretreated Cashew Apple Bagasse With Alkali and Diluted Sulfuric Acid for Bioethanol Production." Applied Biochemistry and Biotechnology, vol. 155, no. 1-3, 2009, pp. 407-17.
Rocha MV, Rodrigues TH, de Macedo GR, et al. Enzymatic hydrolysis and fermentation of pretreated cashew apple bagasse with alkali and diluted sulfuric Acid for bioethanol production. Appl Biochem Biotechnol. 2009;155(1-3):407-17.
Rocha, M. V., Rodrigues, T. H., de Macedo, G. R., & Gonçalves, L. R. (2009). Enzymatic hydrolysis and fermentation of pretreated cashew apple bagasse with alkali and diluted sulfuric Acid for bioethanol production. Applied Biochemistry and Biotechnology, 155(1-3), 407-17. https://doi.org/10.1007/s12010-008-8432-8
Rocha MV, et al. Enzymatic Hydrolysis and Fermentation of Pretreated Cashew Apple Bagasse With Alkali and Diluted Sulfuric Acid for Bioethanol Production. Appl Biochem Biotechnol. 2009;155(1-3):407-17. PubMed PMID: 19031051.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Enzymatic hydrolysis and fermentation of pretreated cashew apple bagasse with alkali and diluted sulfuric Acid for bioethanol production. AU - Rocha,Maria Valderez Ponte, AU - Rodrigues,Tigressa Helena Soares, AU - de Macedo,Gorete Ribeiro, AU - Gonçalves,Luciana R B, Y1 - 2008/11/25/ PY - 2008/05/26/received PY - 2008/11/03/accepted PY - 2008/11/26/pubmed PY - 2009/6/6/medline PY - 2008/11/26/entrez SP - 407 EP - 17 JF - Applied biochemistry and biotechnology JO - Appl Biochem Biotechnol VL - 155 IS - 1-3 N2 - The aim of this work was to optimize the enzymatic hydrolysis of the cellulose fraction of cashew apple bagasse (CAB) after diluted acid (CAB-H) and alkali pretreatment (CAB-OH), and to evaluate its fermentation to ethanol using Saccharomyces cerevisiae. Glucose conversion of 82 +/- 2 mg/g CAB-H and 730 +/- 20 mg/g CAB-OH was obtained when 2% (w/v) of solid and 30 FPU/g bagasse was used during hydrolysis at 45 degrees C, 2-fold higher than when using 15 FPU/g bagasse, 44 +/- 2 mg/g CAB-H, and 450 +/- 50 mg/g CAB-OH, respectively. Ethanol concentration and productivity, achieved after 6 h of fermentation, were 20.0 +/- 0.2 g L(-1) and 3.33 g L(-1) h(-1), respectively, when using CAB-OH hydrolyzate (initial glucose concentration of 52.4 g L(-1)). For CAB-H hydrolyzate (initial glucose concentration of 17.4 g L(-1)), ethanol concentration and productivity were 8.2 +/- 0.1 g L(-1) and 2.7 g L(-1) h(-1) in 3 h, respectively. Hydrolyzates fermentation resulted in an ethanol yield of 0.38 and 0.47 g/g glucose with pretreated CAB-OH and CAB-H, respectively. Ethanol concentration and productivity, obtained using CAB-OH hydrolyzate, were close to the values obtained in the conventional ethanol fermentation of cashew apple juice or sugar cane juice. SN - 1559-0291 UR - https://www.unboundmedicine.com/medline/citation/19031051/Enzymatic_hydrolysis_and_fermentation_of_pretreated_cashew_apple_bagasse_with_alkali_and_diluted_sulfuric_Acid_for_bioethanol_production_ L2 - https://dx.doi.org/10.1007/s12010-008-8432-8 DB - PRIME DP - Unbound Medicine ER -