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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Sugarcane bagasse ozonolysis pretreatment: Effect on enzymatic digestibility and inhibitory compound formation

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Author(s):
Travaini, Rodolfo [1] ; Morales Otero, Marian Derly [2] ; Coca, Monica [1] ; Da-Silva, Roberto [3] ; Bolado, Silvia [1]
Total Authors: 5
Affiliation:
[1] Univ Valladolid, Dept Chem Engn & Environm Technol, E-47011 Valladolid - Spain
[2] Univ Valle, Sch Environm & Nat Resources Engn, Lab Environm Microbiol & Biotechnol, Santiago De Cali 25360 - Colombia
[3] Sao Paulo State Univ, UNESP, IBILCE, Lab Biochem & Appl Microbiol, Dept Chem & Environm, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Bioresource Technology; v. 133, p. 332-339, APR 2013.
Web of Science Citations: 58
Abstract

Sugarcane bagasse was pretreated with ozone to increase lignocellulosic material digestibility. Bagasse was ozonated in a fixed bed reactor at room temperature, and the effect of the two major parameters, ozone concentration and sample moisture, was studied. Acid insoluble and total lignin decreased whereas acid soluble lignin increased in all experiments. Pretreatment barely attacked carbohydrates, with cellulose and xylan recovery rates being >92%. Ozonolysis increased fermentable carbohydrate release considerably during enzymatic hydrolysis. Glucose and xylose yields increased from 6.64% and 2.05%, for raw bagasse, to 41.79% and 52.44% under the best experimental conditions. Only xylitol, lactic, formic and acetic acid degradation compounds were found, with neither furfural nor HMF (5-hydroxymethylfurfural) being detected. Washing detoxification provided inhibitor removal percentages above 85%, increasing glucose hydrolysis, but decreasing xylose yield by xylan solubilization. SEM analysis showed structural changes after ozonization and washing. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 07/08641-4 - Production and comparison study for action of celullases and hemicellulases of different thermophilic and mesophilic fungus on saccharification of sugarcane bagasse
Grantee:Rodolfo Travaini
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 10/12624-0 - Application of physical-chemical and enzymatic methods in the saccharification of sugar cane bagasse: studies on microorganisms, fermentative processes and hydrolyses methods
Grantee:Eleni Gomes
Support Opportunities: Research Projects - Thematic Grants