Food Selectivity
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. AVALIAÇÃO DE NANOTUBOS DE CARBONO FUNCIONALIZADOS VISANDO O DESENVOLVIMENTO DE MÉTODOS DE PRÉ-CONCENTRAÇÃO DE ÍONS METÁLICOS E DETERMINAÇÃO POR TÉCNICAS ESPECTROMÉTRICAS E ELETROANALÍTICAS
This review focuses on the use of functionalized carbon nanotubes (CNTs) on the development of preconcentration methods with substantial contributions on selectivity and sensitivity for metal ions determination. CNTs have been usually employed in the development of preconcentration/speciation coupled to spectroanalytical techniques for ions determination at
Quím. Nova. Publicado em: 2020-09
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2. Quantification of Arsenic, Cadmium, Mercury and Lead in Pineapple: Method Development, Validation and Evaluation of In-House Reference Materials
A method for quantification of arsenic, cadmium, mercury, and lead in pineapple using inductively coupled plasma-mass spectrometry (ICP-MS) was developed, validated, and used to test the homogeneity and stability of in-house reference materials. The method was tested at the regulation levels given by the Food and Agriculture Organization of the United Nation
J. Braz. Chem. Soc.. Publicado em: 2020-06
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3. QUANTIFICAÇÃO DE CANABINOIDES EM EXTRATOS MEDICINAIS DE Cannabis POR CROMATOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA
Cannabidiol (CBD) and tetrahydrocannabinol (THC) are the main active principles in the Cannabis extracts. Rich-CBD extracts are indicated to control seizures in epileptic patients, THC is indicated as antiemetic to patients in chemotherapy treatment and extracts with THC and CBD in proportions of approximately 1:1 are indicated to control spasticity in patie
Quím. Nova. Publicado em: 2020-01
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4. Determination of adulterants in whey protein food supplements by liquid chromatography coupled to Orbitrap high resolution mass spectrometry
Resumo A cromatografia líquida acoplada à espectrometria de massas de alta resolução do tipo Orbitrap demonstrou ser uma técnica adequada para o controle de adulteração de substâncias proibidas não declaradas nos rótulos de suplementos proteicos derivados de soro de leite. Foi estabelecido um método de extração combinado a uma análise instrumen
Braz. J. Food Technol.. Publicado em: 27/06/2019
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5. Evaluation of food baits to capture Drosophila suzukii in the southern of Brazil
Abstract: Drosophila suzukii is one of the main pests of small fruits in the world. An effective monitoring is fundamental to detect the presence of the fly and to predict the infestation of fruits in new areas. We evaluated the food baits Ceratrap®, Torula®, Biofruit®, Suzukii Trap®, apple cider vinegar, and a homemade mixture comprising wine, vinegar a
An. Acad. Bras. Ciênc.. Publicado em: 23/05/2019
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6. COMPOSTOS ORGÂNICOS E INORGÂNICOS CONTENDO SELÊNIO: REVISÃO DE MÉTODOS ANALÍTICOS E PERSPECTIVAS PARA ANÁLISES QUÍMICAS
This article critically reviews the spectrometric, chromatographic and electroanalytical methods applied for the identification and quantification of organic and inorganic compounds containing Se and their applications in food, biological and natural water samples. The main characteristics, advantages and disadvantages of each analytical method are presented
Quím. Nova. Publicado em: 2017-10
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7. Direct Determination of N-Nitrosoglyphosate in Technical Glyphosate Using Ion Chromatography with UV Detection
The official method for analyzing N-nitrosoglyphosate (NNG), a relevant impurity, in glyphosate matrix demands complicated instrumentation and operating conditions not available in many laboratories. In this work, we developed a direct, simple, selective and sensitive ion chromatography (IC) method with UV detection for the determination of NNG in samples of
J. Braz. Chem. Soc.. Publicado em: 2017-07
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8. COMPARAÇÃO DE MÉTODOS POR CROMATOGRAFIA LÍQUIDA NA DETERMINAÇÃO DE MULTIRRESÍDUOS DE AGROTÓXICOS EM MORANGOS
Liquid chromatography is often used for the determination of pesticide multiresidues in foods. In Brazil, the strawberry crop is an example of a food with high levels of irregularities because of the application of pesticides. This is a major concern from the perspective of food safety, environmental protection, and certification for food export. The purpose
Quím. Nova. Publicado em: 2015-12
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9. Validation of a High Performance Liquid Chromatography Method for Aflatoxins Determination in Corn Arepas
Aflatoxins are toxic metabolites produced by Aspergillus species in raw materials and foodstuffs from agricultural sources. Due to the fact that aflatoxins are potentially carcinogenetic, it is important to have reliable analytic methods that allow determining their levels in food matrices. The main aim of this investigation was to validate the method for af
J. Braz. Chem. Soc.. Publicado em: 2015-04
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10. Determination of serum levels of imatinib mesylate in patients with chronic myeloid leukemia: validation and application of a new analytical method to monitor treatment compliance
OBJECTIVE: The goal of this study was to monitor imatinib mesylate therapeutically in the Tumor Biology Laboratory, Department of Hematology and Hemotherapy, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (USP). A simple and sensitive method to quantify imatinib and its metabolite (CGP74588) in human serum was developed and fully v
Rev. Bras. Hematol. Hemoter.. Publicado em: 2013
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11. Novos complexos de Ru(II) e Mg(II) com flavonóides : atividade tóxica, sítios ativos e mecanismos de ação / New Complexes of Ru(II) and Mg(II) with flavonoids: toxic activity, active sites and mechanisms of action.
The use of pesticides in agriculture, in order to enhance and ensure food production for a growing population has led to many concerns about risks to human health and the environment. Therefore, search for new strategies which seek a safer alternative is very important. With this aim, herein we describe new ruthenium(II) and magnesium(II) complexes containin
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/11/2012
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12. In vitro antimicrobial assessment of Cuban propolis extracts
Propolis is a resinous mixture of different plant exudates collected by honeybees. Currently, propolis is widely used as a food supplement and in folk medicine. We have evaluated 20 Cuban propolis extracts of different chemical types, brown (BCP), red and yellow (YCP), with respect to their in vitro antibacterial, antifungal and antiprotozoal properties. The
Mem. Inst. Oswaldo Cruz. Publicado em: 2012-12