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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.)

Effect of pretreatment and enzymatic hydrolysis on the physical-chemical composition and morphologic structure of sugarcane bagasse and sugarcane straw

Full text
Author(s):
de Souza Moretti, Marcia Maria ; Perrone, Olavo Micali ; Carreira Nunes, Christiane da Costa ; Taboga, Sebastiao ; Boscolo, Mauricio ; da Silva, Roberto ; Gomes, Eleni
Total Authors: 7
Document type: Journal article
Source: Bioresource Technology; v. 219, p. 773-777, NOV 2016.
Web of Science Citations: 15
Abstract

The present work aimed to study the effect of the pretreatment of sugarcane bagasse and straw with microwave irradiation in aqueous and acid glycerol solutions on their chemical composition, fiber structure and the efficiency of subsequent enzymatic hydrolysis. Thermogravimetric analysis showed that the pretreatment acted mainly on the lignin and hemicellulose fractions of the bagasse, whereas, in the straw, lesser structural and chemical changes were observed. The images from transmission electron microscopy (TEM) revealed that treating bagasse and straw with acid glycerol solution loosened the cell walls and there was a breakdown in the pit membrane. The treated material was submitted to hydrolysis for 72 h and higher yields of reducing sugars were observed compared to the untreated material (250.9 mg/g from straw and 197.4 mg/g from bagasse). TEM images after hydrolysis confirmed the possible points of access of the enzymes to the secondary cell wall region of the pretreated biomass. (C) 2016 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 13/23886-4 - Study on selectivity of hydrogenolysis / reductive hydrogenation processes of sugarcane bagasse under supercritical state catalyzed by structured metal oxides
Grantee:Mauricio Boscolo
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 10/08827-3 - Production of ligno-hemi-celulases by solid state fermentation and evaluation of the effect of the application of enzymes in the chemical composition and structure of sugar cane bagasse
Grantee:Marcia Maria de Souza Moretti
Support Opportunities: Scholarships in Brazil - Doctorate