A5062637566- Biodiesel Production and Applications
- Adsorption and biosorption for pollutant removal
- Allelopathy and phytotoxic interactions
- Analytical Chemistry and Chromatography
- Dye analysis and toxicity
- Catalysis and Hydrodesulfurization Studies
- Photosynthetic Processes and Mechanisms
- Agricultural and Food Sciences
- Pesticide Exposure and Toxicity
- Organoselenium and organotellurium chemistry
- Microbial Natural Products and Biosynthesis
- Spectroscopy and Chemometric Analyses
- Enzyme-mediated dye degradation
- Chromium effects and bioremediation
- Microbial Metabolism and Applications
- Carcinogens and Genotoxicity Assessment
- Natural product bioactivities and synthesis
- Plant Growth Enhancement Techniques
- Electrochemical sensors and biosensors
- Phytochemistry Medicinal Plant Applications
- Light effects on plants
- Analytical Methods in Pharmaceuticals
- Antioxidant Activity and Oxidative Stress
- Enzyme Catalysis and Immobilization
- Essential Oils and Antimicrobial Activity
Universidade Federal de Mato Grosso
2016-2025
Centro Universitário Curitiba
2024
Universidade Federal de São Carlos
2024
Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso
2024
Universidade Brasil
2023
Universidade de São Paulo
2021-2023
Universidade Federal de Campina Grande
2023
Universidade de Cuiabá
2019
The design of processes involving microwave technology is dependent on the dielectric properties materials being processed. constant and loss factor pure liquids methanol, ethanol, glycerin sulfuric acid, as well vegetable oils (Brazil nut soybean), were measured using a vector network analyzer in an open-ended coaxial probe method (frequency range 300 MHz to 13 GHz) at various temperatures. For measurement during acid-catalyzed transesterification two oil:ethanol molar ratios three...
The development of novel phytotoxic compounds has been an important aim weed control research. In this study, we synthesized fluorinated chalcone derivatives featuring both electron-donating and electron-withdrawing groups. These were evaluated as inhibitors the photosystem II (PSII) electron chain well germination seedling growth Amaranthus plants. Chlorophyll a (Chl a) fluorescence assay was employed to evaluate their effects on PSII, while experiments conducted assess impact development....
Fungal contamination of Brazil nuts can cause health problems, which limits their worldwide consumption and leads to economic restrictions for the producing regions. In this study nut seeds by aflatoxin-producing fungal strains was investigated. It observed that 31 isolated from inside seed coat, 39% showed aflatoxigenic potential, indicating a high level microorganisms produce aflatoxins, have strong carcinogenic hepatotoxic activity. The moisture content water activity are determining...
In this study, artificial neural network (ANN) tools were employed to forecast the adsorption capacity of Malachite green (MG) by baru fruit endocarp waste (B@FE) under diverse conditions, including pH, adsorbent dosage, initial dye concentration, contact time, and temperature. Enhanced efficiency was notably observed alkaline pH conditions (pH 10). Kinetic analysis indicated that process closely followed a pseudo-second-order model, while equilibrium studies revealed Langmuir isotherm as...
The microwave-assisted interesterification of babassu oil with methyl, ethyl and butyl acetates was carried out via acid catalysis, using sulfuric, phosphoric, methanesulfonic acetic acids for the production biodiesel triacetin as an additive. Dielectric measurements in range 0.3 to 13 GHz pure reactants reactions media lead a clear understanding interaction between medium microwave irradiation, allowing achieving optimal conditions terms power, kind catalyst concentration, reactant molar...
Sewage sludge, produced daily and inherent to urban development, presents problems of disposal that are still challenging today. Its offers palliative solutions, where the final destination is generally in landfills or, restrictively, use agriculture. The synthesis carbon quantum dots (CQDs) from sewage sludge a better alternative stock organic material present sludge. work aims produce Carbon using principles green chemistry an raw intrinsic making its more sustainable. obtained has core...
The effect of different heterogeneous catalysts on the microwave-assisted transesterification sunflower oil for production methylic biodiesel in a monomode microwave reactor is described.The experiments were carried out at 70 °C with 16:1 methanolsunflower molar ratio and basic acidic catalysts.The results showed that microwave-heated reactions occur up to four times faster than those conventional heating.The performed 24 catalysts; pure calcium oxide (CaO) potassium carbonate, either or...
Microwave heating technology is dependent on the dielectric properties of materials being processed. The H2SO4, H3PO4, ClSO3H, and H3CSO3H were investigated in this study using a vector network analyzer an open-ended coaxial probe method at various temperatures. Phosphoric sulfuric acids presented higher loss tangents frequency range 0.3-13 GHz, reflecting greater mobility ions counterions. employed as catalysts microwave-assisted homogeneous transesterification reactions for production...
We report an enzymatic biosensor based on the microbial lipase<italic>Ceratobasidium</italic>sp.2 immobilized lamellar zinc hydroxynitrate decorated gold nanoparticles and then incorporated into carbon paste with multi-walled nanotubes (CNTs).
The secreted poisonin bufonids (Anura: Bufonidae) include proteins, biogenic amines, toxic bufadienolides and alkaloids. chemical composition of the methanolic extract parotoid gland secretions by Amazonian toad Rhinella margaritifera was evaluated in a UFLC-DAD-micrOTOF system. Of twenty three compounds found extract, eighteen were identified mass/charge ratio as: five arginine diacids, six bufagenins (telocinobufagin, marinobufagin, bufotalin, cinobufotalin, bufalin cinobufagin),...
We report the synthesis of twelve indole derivatives bearing nitro or amide groups via Fischer methodology followed by reduction/acetylation and amidation reactions. After thorough characterization, these indoles were subjected to a number studies in order evaluate their bioactive potential as photosynthesis plant growth inhibitors. Firstly, molecular hybrids evaluated photosystem II (PSII) inhibitors through chlorophyll (Chl a) fluorescence measurement. In this study,...
Endophytic fungi are an important class of microorganisms, able to interact with a host plant via mutualistic mechanism without visible symptoms the fungal colonization. The synergy between endophytic and their can promote morphological, physiological biochemical changes through expression bioactive metabolites. This work aims correlate metabolic in Combretum lanceolatum metabolome its Diaporthe phaseolorum (Dp) Trichoderma spirale (Ts), discover corresponding metabolite-biomarkers,...
Selenium-containing compounds exhibit diverse biological activities, such as antioxidative, anti-inflammatory, and cancer preventive effects. Using Caenorhabditis elegans a model organism, we assessed the toxicity, neuroprotective, antioxidant properties, impact on longevity of 11 selenoacetylenes. Their toxicity bioactivities varied based molecular structure. Selenoacetylenes with butyl substituents were toxic to Galleria mellonella larvae. The presence but-3-in-2-ol radical increased...
Information on the behavior of dielectric properties electrolytic solutions, such as reaction mixtures, during acid-catalyzed transesterification reactions in biodiesel production is essential design processes involving microwave-heating technology. The influence acid catalyst parameters methanolysis and ethanolysis crude Brazil nut oil was investigated employing H2SO4, H3PO4, ClSO3H, CH3SO3H catalysts. Refined soybean, refined babassu, waste oils were used to study catalyzed by H2SO4....
Shewanella xiamenensis G5-03 isolated from contaminated landfill soil efficiently decolorized five textile azo dyes under static conditions. One of them, Reactive Red 239 (RR239), was completely at a pH range 7 to 11 (at 35°C) within 3-6 h. The bacterium also RR239 in wide temperature 25-40°C 8). kinetics decolorization by fitted the Michaelis–Menten Model (Km = 443.3 mg L-1, Vmax 166.7 L-1 h-1). monitored UV-Vis and FTIR spectroscopy, which showed significant changes peak positions when...