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Topochemistry, porosity and chemical composition determining successful enzymatic sacarification of sugarcane bagasse


This project proposes the development of a new concept for saccharification of sugarcane bagasse based on the enzymatic hydrolysis of forthcoming plants down regulated on lignin biosynthesis. The hypothesis is that once a sugarcane bagasse with reduced lignin content would be available, the hydrolysis of the entire polysaccharide fraction could be performed at mild conditions. Nowadays, the methods used in the pre-treatment of lignocellulosic materials, which precedes the advantageous enzymatic hydrolysis are quite harsh and inevitably lead to degradation and loss of valuable carbohydrates. Moreover, they are generally energy-intensive and generate undesirable by-products, which significantly add processing costs. To check on this hypothesis, the present proposal plan to prepare sugarcane bagasse samples with progressively reduced lignin contents by using a selective chemical step followed by mechanical fiberizing. These bagasse samples would serve as models to find the desirable characteristics, mainly in terms of lignin content, lignin topochemistry and cell wall porosity, necessary to minimize the harshness or abolish the treatment that precedes the enzymatic hydrolysis of the available polysaccharides, namely hemicellulose and cellulose. A subsequent step will be the evaluation of the plants with decreased lignin contents from studies involving down-regulation of lignin biosynthesis or from hybrids selected for low lignin contents. (AU)

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Publicações científicas (17)
(Referências obtidas automaticamente do Web of Science e do SciELO, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores)
SIQUEIRA, GERMANO; VARNAI, ANIKO; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Enhancement of cellulose hydrolysis in sugarcane bagasse by the selective removal of lignin with sodium chlorite. APPLIED ENERGY, v. 102, n. SI, p. 399-402, . (08/56256-5)
MASARIN, FERNANDO; NEVES, ALINE S.; MILAGRES, ADRIANE M. F.; FERRAZ, ANDRE. Evaluation of a simple alkaline pretreatment for screening of sugarcane hybrids according to their in vitro digestibility. INDUSTRIAL CROPS AND PRODUCTS, v. 51, p. 390-395, . (11/08826-0, 08/56256-5)
MACHADO, ANGELA DA SILVA; FERRAZ, ANDRE. Biological pretreatment of sugarcane bagasse with basidiomycetes producing varied patterns of biodegradation. Bioresource Technology, v. 225, p. 17-22, . (14/06923-6, 08/56256-5)
COSTA, THALES H. F.; VEGA-SANCHEZ, MIGUEL E.; MILAGRES, ADRIANE M. F.; SCHELLER, HENRIK V.; FERRAZ, ANDRE. Tissue-specific distribution of hemicelluloses in six different sugarcane hybrids as related to cell wall recalcitrance. BIOTECHNOLOGY FOR BIOFUELS, v. 9, . (14/06923-6, 11/50535-2, 08/56256-5)
SIQUEIRA, GERMANO; ARANTES, VALDEIR; SADDLER, JACK N.; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Limitation of cellulose accessibility and unproductive binding of cellulases by pretreated sugarcane bagasse lignin. BIOTECHNOLOGY FOR BIOFUELS, v. 10, . (12/09940-3, 14/06923-6, 08/56256-5)
VALADARES, FERNANDA; GONCALVES, THIAGO A.; GONCALVES, DAYELLE S. P. O.; SEGATO, FERNANDO; ROMANEL, ELISSON; MILAGRES, ADRIANE M. F.; SQUINA, FABIO M.; FERRAZ, ANDRE. Exploring glycoside hydrolases and accessory proteins from wood decay fungi to enhance sugarcane bagasse saccharification. BIOTECHNOLOGY FOR BIOFUELS, v. 9, . (14/06923-6, 08/56256-5)
MESQUITA, JESSICA FARIA; FERRAZ, ANDRE; AGUIAR, ANDRE. Alkaline-sulfite pretreatment and use of surfactants during enzymatic hydrolysis to enhance ethanol production from sugarcane bagasse. Bioprocess and Biosystems Engineering, v. 39, n. 3, p. 441-448, . (14/06923-6, 08/56256-5)
SPORCK, DANIELE; REINOSO, FELIPE A. M.; RENCORET, JORGE; GUTIERREZ, ANA; DEL RIO, JOSE C.; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Xylan extraction from pretreated sugarcane bagasse using alkaline and enzymatic approaches. BIOTECHNOLOGY FOR BIOFUELS, v. 10, . (14/06923-6, 08/56256-5)
MENDES, FERNANDA M.; HEIKKILA, ELINA; FONSECA, MARIANA B.; MILAGRES, ADRIANE M. F.; FERRAZ, ANDRE; FARDIM, PEDRO. Topochemical characterization of sugar cane pretreated with alkaline sulfite. INDUSTRIAL CROPS AND PRODUCTS, v. 69, p. 60-67, . (11/08826-0, 11/50535-2, 08/56256-5)
SIQUEIRA, GERMANO; VARNAI, ANIKO; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Enhancement of cellulose hydrolysis in sugarcane bagasse by the selective removal of lignin with sodium chlorite. APPLIED ENERGY, v. 102, p. 4-pg., . (08/56256-5)
COSTA, THALES H. F.; MASARIN, FERNANDO; BONIFACIO, TAINA O.; MILAGRES, ADRIANE M. F.; FERRAZ, ANDRE. The enzymatic recalcitrance of internodes of sugar cane hybrids with contrasting lignin contents. INDUSTRIAL CROPS AND PRODUCTS, v. 51, p. 202-211, . (10/50051-2, 11/50535-2, 08/56256-5)
MENDES, FERNANDA M.; LAURITO, DEBORA F.; BAZZEGGIO, MARIANA; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Enzymatic digestion of alkaline-sulfite pretreated sugar cane bagasse and its correlation with the chemical and structural changes occurring during the pretreatment step. BIOTECHNOLOGY PROGRESS, v. 29, n. 4, p. 890-895, . (11/08826-0, 08/56256-5)
CORTEZ, D. V.; ROBERTO, I. C.; BARBOSA, M. H. P.; MILAGRES, A. M. F.. Evaluation of cellulosic and hemicellulosic hydrolysate fermentability from sugarcane bagasse hybrids with different compositions. BIOMASS CONVERSION AND BIOREFINERY, v. 4, n. 4, p. 6-pg., . (08/56256-5)
LAURITO-FRIEND, D. F.; MENDES, F. M.; REINOSO, F. M.; FERRAZ, A.; MILAGRES, A. M. F.. Sugarcane hybrids with original low lignin contents and high field productivity are useful to reach high glucose yields from bagasse. BIOMASS & BIOENERGY, v. 75, p. 65-74, . (08/56256-5)
MOREIRA, SERGIO; MILAGRES, ADRIANE M. F.; MUSSATTO, SOLANGE I.. Reactive dyes and textile effluent decolorization by a mediator system of salt-tolerant laccase from Peniophora cinerea. Separation and Purification Technology, v. 135, p. 183-189, . (08/56256-5)
VARNAI, ANIKO; COSTA, THALES H. F.; FAULDS, CRAIG B.; MILAGRES, ADRIANE M. F.; SIIKA-AHO, MATTI; FERRAZ, ANDRE. Effects of enzymatic removal of plant cell wall acylation (acetylation, p-coumaroylation, and feruloylation) on accessibility of cellulose and xylan in natural (non-pretreated) sugar cane fractions. BIOTECHNOLOGY FOR BIOFUELS, v. 7, . (11/50535-2, 08/56256-5)
MENDES, FERNANDA M.; FONSECA, MARIANA B.; FERRAZ, ANDRE; MILAGRES, ADRIANE M. F.. Anatomic and Ultrastructural Characteristics of Different Regions of Sugar Cane Internodes Which Affect Their Response to Alkaline Sulfite Pretreatment and Material Recalcitrance. ENERGY & FUELS, v. 30, n. 2, p. 1078-1084, . (14/06923-6, 11/50535-2, 08/56256-5)

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Patente(s) depositada(s) como resultado deste projeto de pesquisa

PROCESSO DE OBTENÇÃO DE SUBSTRATO LIGNOCELULÓSICO E USO DO SUBSTRATO LIGNOCELULÓSICO BR1020130010987 - Universidade de São Paulo (USP) . André Luis Ferraz ; Adriane Maria Ferreira Milagres ; Thales Henrique de Freitas Costa ; Fernanda Machado Mendes - 16 de janeiro de 2013