A5044993014- Chemistry Education and Research
- Carbohydrate Chemistry and Synthesis
- Science and Education Research
- Synthesis and biological activity
- Education Pedagogy and Practices
- Enzyme Catalysis and Immobilization
- Environmental Sustainability and Education
- Glycosylation and Glycoproteins Research
- Chemistry and Chemical Engineering
- Education and Digital Technologies
- Synthesis and Characterization of Heterocyclic Compounds
- Synthesis and Biological Evaluation
- Click Chemistry and Applications
- Agricultural and Food Sciences
- Synthesis of Organic Compounds
- Food Safety and Hygiene
- Microwave-Assisted Synthesis and Applications
- Diet, Metabolism, and Disease
- Structural and Chemical Analysis of Organic and Inorganic Compounds
- Synthesis and properties of polymers
- Multicomponent Synthesis of Heterocycles
- Dye analysis and toxicity
- X-ray Diffraction in Crystallography
- Fungal Plant Pathogen Control
- Microbial Metabolites in Food Biotechnology
Universidade Federal Rural de Pernambuco
2016-2025
Universidade Federal de Campina Grande
2017-2021
Centro de Estudos e Sistemas Avançados do Recife
2021
Sociedade Brasileira de Química
2021
Universidade Federal de Pernambuco
2001-2017
Universidade de Pernambuco
2013
The diamondback moth (Plutella xylostella) is a cosmopolitan pest known for its destruction of cruciferous plants. Commercial insecticides, such as Decis 25 EC and Azamax, are the main forms controlling this in irrigated systems agricultural communities city Garanhuns (northeastern Brazil). However, difficulty resides high fecundity short lifecycle, which serve resistance mechanisms to insecticides. Considering immediate need find alternative products insecticides employed these communities,...
This work was performed in order to evaluate the hygienical-sanitary and physical-chemical features of homemade production coalho cheese small units Jucati (PE) orientation breeders regarding the importance hygiene obtain quality mark. The collects were monthly during six months on properties. We analyzed samples milk, utensils used different stages line. it inadequate thermic treatment hygienic procedures utensils. Keeping track production, orienting analysing...
This is a report on an efficient and rapid synthesis of amidoximes using ultrasound irradiation with appropriate nitrile hydroxylamine hydrochloride in water/ethanol.This new synthetic methodology compared previously known methods.The main advantages the process reported are shorter reaction times, easier work-up, good yield.
The synthesis of 3-aryl-5-pentyl-1,2,4-oxadiazoles from carboxylic acid esters and arylamidoximes in the presence potassium carbonate is described.The reaction was carried out a microwave oven without any solvent much shorter time good yields.The structures synthesized compounds were elucidated using IR, 1 H 13 C NMR spectroscopy elemental analysis their antiproliferative activities evaluated against three different human cell lines.
1,2,4-Oxadiazole are compounds that have attracted the attention of many researchers due to their wide range biological activities.Methods used for synthesis 3,5-substituted 1,2,4-oxadiazoles reviewed in this works, as well applications.The syntheses based mostly on use primary amidoximes and acylating agents initial reactants.In last years, numerous reports concerning new methods been reported.The microwave irradiation ultrasound chemical has advantages with consequent impacts economy environment.
ORGANIC BIPHASIC.We describe the application of an amidoxime as catalyst in synthesis homoallylic alcohols from allylation reaction aldehydes with different features using potassium allyltrifluoroborate.The was conducted a catalytic amount appropriate biphasic system (water:dichloromethane), open atmosphere and ambient temperature.The products were obtained yields ranging moderate to excellent short times without need for further purifications almost all examples.Additionally, has proved...
Abstract N‐ glycosides are produced when an aglycone is connected, for example, using a glycosylation reaction, to the sugar moiety via linkage of C−N bond at anomeric carbon. N ‐glycosides obtained from different precursors, including glucals, 1‐azido glycosides, glycosyl azide, isothiocyanate, 2‐deoxy‐2‐iodo‐ ‐glycoside, glycosyl‐1 H ‐1,2,3‐triazol, and 2‐nitroglucal. The biological relevance ‐glycopyranosides has drowned attracted attention several researchers. scope this review covers...
O objetivo desta pesquisa foi avaliar a qualidade de físico – químicos do queijo coalho comercializado no município Barreiros PE. As amostras foram coletadas em pequeno supermercado - PE, entre os meses julho dezembro. Os valores médios encontrados para parâmetros físico-químicos foram: umidade-36,37g/100g; cinzas-4,31g/100g; cloretos-2,00g/100g; acidez- 1,47(g/100g ácido láctico); extrato seco 63,56g/100g. Não houve diferença (p>0,05) queijos comercializados Barreiros/PE físico- químicos.
As dificuldades conceituais que alunos apresentam sobre o tema "isomerismo" são atribuídas a problemas básicos, como compreensão de teorias estruturais, ligações químicas e representações fórmulas estruturais. Este trabalho teve objetivo avaliar evolução da apren dizagem estudantes do ensino médio fenômeno isomeris mo. A metodologia utilizada se baseou nas concepções prévias dos estu dantes na utilização processo construção conceito isome- ria. Os dados foram coletados um grupo 25 terceira...
Ésteres constituem uma das classes de substâncias químicas largamente encontradas na natureza. Alguns ésteres, baixo peso molecular, tendem a apresentar sabor e aroma agradáveis e, por isso, são bastante usados em alimentos bebidas industrializadas. Os ésteres podem ser sintetizados através da reação entre um ânion carboxilato haleto alquila ou ainda pela esterificação Fischer. Industrialmente, Fischer é dos principais métodos para síntese ésteres. No presente trabalho descreve-se...
This article describes an experiment that involves the extraction and separation of pigments spinach extract by column chromatography using silica obtained from rice husk ash as a stationary phase.The experimental procedure is very simple to apply in chemistry laboratory, allowed illustrate some concepts organic chemistry: structure molecules, solubility, polarity, extraction, partition coefficient, adsorption retention factor (R f ), well objectives fundamentals chromatographic methods.The...
Carbohydrates are the most abundant biomolecules on Earth and annually approximately 200 billion tons of these compounds produced by higher plants algae.Among many classified as carbohydrates, D-glucose is far monosaccharide.Dglucose one few carbohydrates low molecular mass, economically attractive, a large scale prone to structural modifications for production new compounds.Dglucose used in varied industrial sectors, such as: food, pharmaceutical, cosmetic, chemical, among others.Therefore,...
O queijo de coalho é um típico da região Nordeste do Brasil, que tem uma crescente popularidade nas cidades Agreste Meridional Pernambuco. Logo, o objetivo deste estudo foi avaliar os parâmetros físico - químicos “Coalho” produzido artesanalmente na cidade Calçado PE. Foram coletadas amostras em dez (10) queijarias fundo quintal e as analise foram feitas duplicata. Os valores médios encontrados para queijos estudados pH 5,99, umidade 55,40, cloreto sódio 0,742 , gordura 26,17 proteína 21,53...
O trabalho foi realizado com o objetivo de avaliar teor caseína e albumina no leite vacas da raça Girolanda em diferentes fases lactação. período experimental teve duração 45 dias (dezembro/2005 a janeiro/2006), dividido duas fases: I- avaliação albumina; II- investigação os efeitos climatização, número ordenha, alimentação manejo. Os resultados indicam redução do proteínas, consequentemente, quantidade aumento proporcional albumina. Concluiu-se que alimentadas base capim-elefante, silagem...
O uso de atividades lúdicas no ensino Química está associado à busca por melhorias processo e aprendizagem. Diante deste contexto, a construção aplicação jogos didáticos para o se configura como uma das inúmeras alternativas viáveis promoção tais melhorias. Esse artigo relata experiência que utiliza metodologia na aprendizagem Orgânica, auxiliar isomeria funções oxigenadas. Antes da dos foi ministrada aula teórica sobre os assuntos em questão logo após realizado um teste sondagem avaliar...