A5065677467- Biofuel production and bioconversion
- Enzyme Production and Characterization
- Enzyme Catalysis and Immobilization
- Microbial Metabolic Engineering and Bioproduction
- Catalysis for Biomass Conversion
- Enzyme-mediated dye degradation
- Catalytic Processes in Materials Science
- Fermentation and Sensory Analysis
- Phytochemicals and Antioxidant Activities
- Mycorrhizal Fungi and Plant Interactions
- Layered Double Hydroxides Synthesis and Applications
- Biochemical and biochemical processes
- Fungal Biology and Applications
- Protein Hydrolysis and Bioactive Peptides
- Catalysis and Hydrodesulfurization Studies
- Microbial Metabolites in Food Biotechnology
- Microbial Metabolism and Applications
- Lignin and Wood Chemistry
- Natural Products and Biological Research
- Agricultural and Food Sciences
- Biodiesel Production and Applications
- Cassava research and cyanide
- Food composition and properties
- Meat and Animal Product Quality
- Mesoporous Materials and Catalysis
Universidade Estadual Paulista (Unesp)
2016-2025
Faculdade de Medicina de São José do Rio Preto
2020
University of California, Santa Barbara
2018
Centro Universitário de Rio Preto
2017
Universidade de São Paulo
1993-2009
Universidade Federal de São Carlos
2002
University of Washington
2002
Aims To obtain new cellulases and xylanases from thermophilic fungi; evaluate their potential for sugarcane bagasse saccharification. Methods Results Thirty-two heat-tolerant fungi were isolated the environment, identified (morphological/molecular tools) production of enzymes was evaluated by solid state fermentation using lignocellulosic materials as substrates. Myceliophthora thermophila JCP 1-4 best producer endoglucanase (357·51 U g−1), β-glucosidase (45·42 xylanase (931·11 g−1)...
Microbial rennet-like milk-clotting enzymes are aspartic proteinases that catalyze milk coagulation, substituting calf rennet. Crude enzymatic extract produced by the thermophilic fungus, Thermomucor indicae-seudaticae N31, on solid state fermentation (SSF) using wheat bran, exhibited high activity and low proteolytic after 24 h of fermentation. Highest (MCA) was at pH 5.7, 70 °C in 0.04 M CaCl2; it stable range 3.5–4.5 for up to 45 1 h. MCA highly inhibited pepstatin A. Hydrolytic profile...
Sugarcane bagasse (SCB) was treated in three stages using ozone oxidation (O), washing an alkaline medium (B) and ultrasonic irradiation (U). The impact of each pretreatment stage on the physical structure SCB evaluated by its chemical composition, infrared technique (FTIR-ATR), thermogravimetric analysis (TGA/DTG). sequence O, B, U provided a significant reduction lignin hemicellulose, which confirmed changes absorption bands corresponding to these compounds, when observed infrared....
The role of copper(II) species in the oxidation inorganic cyanide to cyanate and conversion or urea into ethyl carbamate was investigated. process has been shown be independent from dissolved oxygen. Elemental analysis infrared spectroscopy have formation a mixed copper carbonate/hydroxide water/ethanol. complexation CuII formed upon makes former more susceptible nucleophilic attack ethanol, with carbamate. Comparatively, minor respect Therefore, present some samples Brazilian sugar cane...
Wood rotting Basidiomycetes collected in the "Estação Ecológica do Noroeste Paulista", São José Rio Preto, Paulo State, Brazil, concerning Aphyllophorales order and identified as Coriolopsis byrsina SXS16, Lentinus strigellus SXS355, sp SXS48, Picnoporus sanguineus SXS 43 Phellinus rimosus SXS47 were tested for ligninases production by solid state fermentation (SSF) using wheat bran or rice straw culture media. C. produced highest laccase (200 U mL(-1)) activities of manganese peroxidase...
The present work aimed to study the effect of pretreatment sugarcane bagasse and straw with microwave irradiation in aqueous acid glycerol solutions on their chemical composition, fiber structure efficiency subsequent enzymatic hydrolysis. Thermogravimetric analysis showed that acted mainly lignin hemicellulose fractions bagasse, whereas, straw, lesser structural changes were observed. images from transmission electron microscopy (TEM) revealed treating solution loosened cell walls there was...
For the implementation of cellulosic ethanol technology, maximum use lignocellulosic materials is important to increase efficiency and reduce costs. In this context, appropriate pentose released by hemicellulose hydrolysis could improve de economic viability process. Since Saccharomyces cerevisiae unable ferment pentose, search for pentose-fermenting microorganisms be an alternative. work, isolation yeast strains from decaying vegetal materials, flowers, fruits insects their application...
PRODUCTION OF BIONAPHTHA FROM (C3-C5) PRIMARY ALCOHOLS VIA CATALYTIC DEHYDROGENATION/DEHYDRATION PROCESSES. A sequence of dehydrogenation/dehydration reactions homologous alcohols: propanol, butanol and pentanol was conducted using heterogeneous catalysts composed mixed metal oxides basically Mg Al derived from hydrotalcites in the ratio M2+/Al3+ = 3, with 10 20% substituted by Cu. The were carried out a fixed-bed reactor over duration 6 h at temperatures 450 500 °C yielded products...
The isolation of microorganisms from soil impacted by xenobiotic chemicals and exposing them in the laboratory to contaminant can provide important information about their response contaminants. purpose this study was isolate bacteria with historical application herbicides evaluate potential degrade diuron. media contained either glucose or diuron as carbon source. A total 400 were isolated, 68% being Gram-positive 32% Gram-negative. Most isolates showed between 10 30% after five days...
Reported are the temperature dependencies of temporal product evolution for lignin model compounds over copper-doped porous metal oxide (CuPMO) in supercritical-methanol (sc-MeOH). These studies investigated 1-phenylethanol (PPE), benzyl phenyl ether (BPE), dihydrobenzofuran (DHBF), and phenol operating ranges from 280 to 330 °C. The first three represent β-O-4 α-O-4 linkages as well furan group commonly found β-5 linkage. Phenol was due its key role proliferation noted earlier with this...
The presence of 51 volatile compounds, among alcohols and esters in Brazilian sugar-cane spirit (cachaça), were investigated by high-resolution gas chromatography (HRGC). following identified quantified: methanol, 1,4-butanodiol, 2-phenylethyl alcohol, amyl cetyl cynamic n-decanol, geraniol, isoamyl isobutanol, menthol, n-butanol, n-dodecanol, n-propanol, n-tetradecanol, propionate, ethyl acetate, benzoate, heptanoate, valerate, methyl propyl butyrate. average higher content (262 mg/100 mL...
For the first time, production of an extracellular β-glucosidase (Sp-β-gl) by a Sporidiobolus pararoseus yeast strain is reported. The Sp-β-gl activity was quantified, characterized, and assessed for its efficiency in releasing aroma-enhancing compounds wines. maximum enzymatic synthesis after 72 h growth complex media with 20 g/L cellobiose. optimal pH temperature were 5.5 at 50 °C, respectively. It showed wide range stability exhibited quite high thermostability low temperatures. In...