A5008163959- Essential Oils and Antimicrobial Activity
- Insect Pest Control Strategies
- Extraction and Separation Processes
- Recycling and Waste Management Techniques
- Dye analysis and toxicity
- Phytochemistry and Biological Activities
- Phytochemicals and Antioxidant Activities
- Insect behavior and control techniques
- Natural product bioactivities and synthesis
- Advanced Chemical Sensor Technologies
- Fungal Plant Pathogen Control
- Sesquiterpenes and Asteraceae Studies
- Spectroscopy and Chemometric Analyses
- Water Treatment and Disinfection
- Plant chemical constituents analysis
- Biosensors and Analytical Detection
- Electrochemical sensors and biosensors
- Environmental Chemistry and Analysis
- Metal complexes synthesis and properties
- Insect Pheromone Research and Control
- Insect Resistance and Genetics
- Pesticide Residue Analysis and Safety
- Plant biochemistry and biosynthesis
- Coffee research and impacts
- Weed Control and Herbicide Applications
Universidade Federal de Viçosa
2015-2024
Universidade Federal de Ouro Preto
2016-2022
Essential oils of Cymbopogon nardus and C. winterianus have fungicidal, bactericidal, insect repellent activities. In addition, they are components fragrances, cosmetics, household products. The growing demand for essential has intensified adulteration practices such products.To evaluate the authenticity quality citronella commercial based on chemical composition [by gas chromatography mass spectrometry (GC-MS)] contents its major constituents 1 H-NMR, with a flame ionisation detector using...
3,6-Diidropiridin-2(1H)-ona foi isolado do extrato das sementes de Bunchosia glandulifera e D-mannitol da polpa. A elucidação estrutural 3,6-diidropiridin-2(1H)-ona realizada empregando os métodos espectrométricos. Cálculos teóricos dos deslocamentos químicos RMN 1H 13C para três estruturas candidatas foram realizados. Os calculados comparados com valores experimentais o método estatístico DP4. probabilidade DP4 carbono hidrogênio 100% a estrutura candidata R1 (3,6-diidropiridin-2(1H)-ona),...
The aim of this study is to investigate the application ultrasound in extraction betanin from beets (Beta vulgaris) using Deep eutectic solvents (DES). process was optimized response surface methodology. time variable found be correlated with performance. Three DES (choline chloride: urea (CC:U), choline glycerol (CC:G), and citric acid (CC:Ac)) were studied. concentration extracted CC:U, CC:G, CC:Ac 41.27-67.51, 82.46-104.45, 50.06-111.93 mg/100 g. maximum 111.193 g achieved 38 min 44%...
Due to the potential threats of nitrite public health and safety, in this work, we proposed, for first time, application PhotoMetrix® software detection meat products.Nitrite monitoring food matrices has been carried out by expensive analytical methods.Aiming mainly speed cost reduction, colorimetric analysis developed using digital imaging.Among them, PhotoMetrix®, a free based on templates univariate multivariate mathematicians, standing its functionality.Herein, evaluate efficiency...
Bunchosia glanduliera stands out because of the high content flavonoid compounds in pulp, contributing to antioxidant potential fruit extracts. Another plant species rich is Markhamia tomentosa. However, perform such an assay, a high-cost instrument needed. To develop simple and low-cost method for determination M. tomentosa B. glandulifera with PhotoMetrix® program application use pixels digital imaging as alternative linear correlation techniques univariate analysis implementing systems...
Drosophila suzukii, an invasive insect pest, poses a significant threat to various fruit crops. The use of broad-spectrum insecticides control this pest can reduce the effectiveness biological agents, such as parasitoid Trichopria anastrephae. Here, we evaluated toxicity newly synthesized lactone derivatives on D. suzukii and their selectivity towards T. We used in silico approaches identify potential targets from most promising molecules nervous system understand differences...
The indiscriminate use of herbicides makes weeds resistant, increasing the demand for more efficient herbicides. Novel potential were prepared from sorbic acid, being 8 dienamides and 6 epoxides. Subsequently, phytotoxic activities acid 14 synthesized compounds evaluated against sorghum, onion, cucumber, lettuce, beggartick seeds. Furthermore, protein target most active substance in plants was identified silico. Among tested compounds, (2E,4E)-N-(p-fluorophenyl)hexa-2,4-dienamide (2c),...
The structure of costunolide was modified before conducting the Cope rearrangement under thermal conditions. This modification undertaken to block highly reactive Michael acceptor α-methylene-γ-lactone, thus preventing side reactions at high temperatures. In this work, reaction performed heating or microwave irradiation using costunolide, not its version. Rates catalyzed by palladium(II) assisted were substantially enhanced. rearrangements elemanolide, eudesmanolides, and germacranolide...
Aim: This study aimed to enhance the aqueous dissolution of SRPK inhibitor N-(2-(piperidin-1-yl)-5-(trifluoromethyl)phenyl)isonicotinamide (SRPIN340). Materials & Methods: A complex with p-sulfonic calix[6]arene (Host) and SRPIN340 (Guest) was prepared, studied via 1H nuclear magnetic resonance (NMR) theoretical calculations biologically evaluated on cancer cell lines. Results conclusion: The 1:1 host (H)/guest (G) significantly enhanced SRPIN340, achieving 64.8% water solubility as...
Essential oils (EO) have diverse applications, such as antibacterial and antifungal activity. However, they are susceptible to oxidation in the presence of air, light, moisture. In addition, thermally unstable. this sense, it is necessary develop techniques increase lifespan EO. work, EO was obtained from cloves characterized by different techniques. The major compounds found were eugenol (83%), acetate (9%), β-caryophyllene (8%). encapsulated extrusion using a microfluidic device. sodium...
Abstract Aedes aegypti L. (Diptera: Culicidae) is a vector for serious diseases in tropical regions. This pest mainly controlled by commercial larvicides but the application of such products has led to environmental problems. Essential oils (EO) have been consistently reported as molecules with insecticidal activity and can be used produce more environmentally friendly control A. . In this study, larvicidal effect essential from leaves three Artemisia species was evaluated against A The were...
A cafeína é um alcaloide de ocorrência natural nas folhas e sementes muitas plantas geralmente adicionadas a medicamentos, alimentos produtos bebidas, sendo uma das substâncias psicoativas mais consumidas no mundo. O consumo mundial per capita tem aumentado através do bebidas energéticas, chá verde, erva-mate principalmente, café. Brasil líder na produção exportação grãos Desta forma, o presente estudo visa analisar quantificar presença em amostras café nos diferentes estágios maturação,...
As espécies do gênero Plumeria são conhecidas pela fragrância forte e agradável; no entanto, sua composição volátil variação de aroma amplamente desconhecidas. Os perfis diurno noturno dos aromas florais três foram avaliados com base na química (por HS-SPME / GC-MS). Vinte quatro compostos identificados. Linalol foi o composto majoritário em P. alba (86,5% dia 71,0% noite), menor rubra (8,3% 13,0% noite) ausente obtusa. O encontrado benzoato metila (55,9% 62,3% obtusa salicilato (30,2% 20,6%...