A5045395401- Biodiesel Production and Applications
- Lubricants and Their Additives
- Catalysis and Hydrodesulfurization Studies
- Petroleum Processing and Analysis
- Catalytic Processes in Materials Science
- Thermal and Kinetic Analysis
- Insect and Pesticide Research
- Agricultural and Food Sciences
- Advanced Combustion Engine Technologies
- Silk-based biomaterials and applications
- Healthcare during COVID-19 Pandemic
- Insect Resistance and Genetics
- Fuel Cells and Related Materials
- Yersinia bacterium, plague, ectoparasites research
- Nanocomposite Films for Food Packaging
- Advanced Cellulose Research Studies
- Catalysis for Biomass Conversion
- Pigment Synthesis and Properties
- Wheat and Barley Genetics and Pathology
- Offshore Engineering and Technologies
- Heat transfer and supercritical fluids
- Drilling and Well Engineering
- Microbial Metabolic Engineering and Bioproduction
- Free Radicals and Antioxidants
- Ginkgo biloba and Cashew Applications
Universidade Federal do Rio Grande do Norte
2009-2024
Universidade Federal da Paraíba
2007-2011
Universidade de São Paulo
2005-2007
Instituto de Psicologia Comportamental de São Carlos
2003
Abstract The major maize storage proteins (α zeins) are deposited as an insoluble mass in the protein bodies of endosperm. Because they water, most structural studies performed alcohol solutions. To solve question raised by several authors about denaturation α zein structure alcohol, we analyze secondary zeins prepared with and without solubilization (corn gluten meal high concentrations traces β zeins). structures analyzed solid state Fourier transform IR spectroscopy (FTIR) KBr pellets...
Chemical interactions between metal particles (Ag or Ni) dispersed in a low-cost MCM-41M produced from beach sand amorphous silica and sulfur compounds were evaluated the deep adsorptive desulfurization process of real diesel fuel. N2 adsorption-desorption isotherms, X-ray diffraction (XRD), photoelectron spectroscopy (XPS), high-resolution transmission electron microscopy (HRTEM) scanning coupled to energy-dispersive (STEM-EDX) used for characterizing adsorbents. HRTEM XPS confirmed high...
Heterogeneous catalysts, named SPS (sodium potassium silicates), were synthesized with an alternative silica (MPI silica) obtained from beach sand. In this work, the MPI was modified NaOH and KOH producing silicate-based catalyst for biodiesel synthesis waste cooking oil (WCO). The characterized by XRD, CO2-TPD, Hammett basicity test, XRF, FESEM, EDX, FTIR TG/DTG. results confirmed presence of K2O/Na2O oxides their silicates, main active sites responsible catalytic action. CO2-TPD data...
Abstract The proline‐rich N‐terminal domain of γ‐zein has been reported in relevant processes, which include its ability to cross the cell membranes. Evidences indicate that synthetic hexapeptide (PPPVHL), naturally found portion γ‐zein, can adopt polyproline II (PPII) conformation aqueous solution. secondary structure maize protein bodies had analyzed by solid state Fourier transform infrared and nuclear magnetic resonance spectroscopies. However, it was not possible measure PPII content...
Abstract In this research, a greener heterogeneous catalyst (named TPC) was obtained from ‘Ponkan’ tangerine ( Citrus reticulata Blanco) peel ashes. TPC efficient for biodiesel production through the methyl route using refined soybean oil and waste cooking as raw materials in biorefinery‐based approach. Eight samples were prepared via calcination of ashes at 700 °C (TPC7), 800 (TPC8) 900 (TPC9), blends TPC7 with CaCO 3 K 2 CO . All catalysts employed preliminary tests transesterification...
Materiais com estrutura perovsquita são potenciais catalisadores para prevenir a emissão de componentes indesejáveis ao meio ambiente. Diferentes métodos têm sido propostos síntese desses materiais, visando produzir materiais homogêneos tamanho nanométrico partículas. Os compostos La0,8Ca0,2MnO3 e La0,8Ca0,2CoO3 foram preparados pelo método dos precursores poliméricos sua utilização como automotivos. Este foi utilizado porque permite obtenção pós fases cristalinas temperaturas mais baixas...
The nutritional value of maize seed is limited due to its high content storage proteins (zeins), which are deficient in essential amino acids such as lysine and tryptophan. In a previous paper, we showed that protein bodies obtained from BR473 variety, developed by Embrapa (Brazilian Agricultural Research Corporation), were mainly constituted Z27 smaller quantity Z50 gamma-zeins. Besides zein proteins, other not identified band the SDS/PAGE was also observed, could indicate presence non-zein...