A5090780053- Biofuel production and bioconversion
- Enzyme Production and Characterization
- Microbial Metabolic Engineering and Bioproduction
- Enzyme Catalysis and Immobilization
- Sugarcane Cultivation and Processing
- Microbial Metabolites in Food Biotechnology
- Catalysis for Biomass Conversion
- Food composition and properties
- Enzyme-mediated dye degradation
- Advanced Cellulose Research Studies
- Natural Products and Biological Research
- Agricultural and Food Sciences
- Nanoparticles: synthesis and applications
- Polysaccharides Composition and Applications
- Chromium effects and bioremediation
- Biocrusts and Microbial Ecology
- Proteoglycans and glycosaminoglycans research
- Geography and Environmental Studies
- Bioeconomy and Sustainability Development
- Collagen: Extraction and Characterization
- Recycling and utilization of industrial and municipal waste in materials production
- Fermentation and Sensory Analysis
- Coal and Its By-products
- Biotechnology and Related Fields
- Plant Genetic and Mutation Studies
Universidade de São Paulo
2005-2021
Colorado State University
2006
Universidade Federal de Juiz de Fora
1998
Physique et Mécanique des Milieux Hétérogènes
1997
Centre National de la Recherche Scientifique
1997
Geociencias Barcelona
1994
Abstract Sugarcane is among the principal agricultural crops cultivated in tropical countries. The annual world production of sugarcane ∼1.6 billion tons, and it generates ∼279 million metric tons (MMT) biomass residues (bagasse leaves). residues, particularly bagasse (SB) leaves (SL) have been explored for both biotechnological non‐biotechnological applications. For last three decades, SB SL use lignocellulosic bioconversion, which offers opportunities economic utilization residual...
The recalcitrance of lignocellulosic materials is a major limitation for their conversion into fermentable sugars. Lignin depletion in new cultivars or transgenic plants has been identified as way to diminish this recalcitrance. In study, we assessed the success sugarcane breeding program selecting with low lignin content, and report chemical composition agronomic characteristics eleven experimental hybrids two reference samples. enzymatic digestion untreated chemically delignified samples...
Lignin and hemicelluloses are the major components limiting enzyme infiltration into cell walls. Determination of topochemical distribution lignin aromatics in sugar cane might provide important data on recalcitrance specific cells. We used cellular ultraviolet (UV) microspectrophotometry (UMSP) to topochemically detect hydroxycinnamic acids individual fiber, vessel parenchyma walls untreated chlorite-treated cane. Internodes, presenting typical vascular bundles sucrose-storing cells, were...
Abstract Transitioning from gasoline and petroleum‐based products to biofuels green chemicals is a paradigm shift that will lead the development of bioeconomy. In this sense, role biorefineries in countries like Brazil very important as country generates huge amount second generation (2G) biomass every year also has an attractive consumable market. However, technological innovations are still required unleash fullest potential conversion biochemicals, although successful examples already...
This paper describes a study of the variability measured composition for single bulk sugarcane bagasse conducted across eight laboratories using similar analytical methods, with purpose determining expected variation compositional analysis performed by different laboratories. The results show good agreement within laboratory, but greater when are compared among These interlaboratory variabilities do not seem to be associated specific method or technique any piece instrumentation. summary...
Abstract Chemithermomechanical (CTM) processing was used to pretreat sugarcane bagasse with the aim of increasing cell wall accessibility hydrolytic enzymes. Yields pretreated samples were in range 75–94%. Disk refining and alkaline‐CTM alkaline/sulfite‐CTM pretreatments yielded materials 21.7, 17.8, 15.3% lignin, respectively. Hemicellulose content also decreased some extent. Fibers presented external fibrillation, fiber curling, increased swelling, high water retention capacity. Cellulose...
This study examined the hierarchical structuring of *BEA zeolite using two distinct approaches: double aluminum removal with solid ammonium hexafluorosilicate (2x-AHFS) and a solution 0.2 M sodium hydroxide followed by 0.5 hydrochloric acid (T-NaOH). Additionally, niobium pentoxide (Nb2O5) was impregnated at different loadings (5, 10, 15, 20 wt.%) onto hierarchized materials. Both treatments increased SiO2/Al2O3 ratio produced crystals domains about same size. The hierarchization methods...
Wheat straw hemicellulosic hydrolysate was used for xylitol bioproduction. The use of a xylose-containing medium to grow the inoculum did not favor production in hydrolysate, which submitted previous detoxification treatment with 2.5% activated charcoal optimized removal inhibitory compounds.
STRUCTURE, COMPOSITION AND BIODEGRADATION.Wood is the main raw material used in pulp and paper industry.It a that presents heterogeneous structure complex composition, which results relatively resistant to biodegradation process.In present review, we attempted summarize structural characteristics of wood describe chemical nature its major components to, afterwards, comment about biodegradation.The role enzyme manganese peroxidase lignin degradation by selective white-rot fungus,...
Abstract Candida guilliermondii cells, immobilized in Ca‐alginate beads, were used for batch xylitol production from concentrated sugarcane bagasse hydrolyzate. Maximum concentration (20.6 g/L), volumetric productivity (0.43 g/L · h), and yield (0.47 g/g) obtained after 48 h of fermentation higher than similar immobilized‐cell systems but lower free‐cell cultivation systems. Substrates, products, biomass concentrations material balances to study the ways which different carbon sources...
Abstract This study describes the performance of four different resins, in sequence, to detoxify sugarcane bagasse hemicellulosic hydrolysate and improve xylitol production by calcium alginate‐entrapped Candida guilliermondii FTI20037 cells under conditions low oxygen concentration. The treatment resulted a removal 82.1% furfural, 66.5% hydroxymethylfurfural, 61.9% phenolic compounds derived from lignin degradation, 100% chromium, 46.1% zinc, 28.5% iron, 14.7% sodium 3.5% nickel. On other...