Institution
Ministry of Agriculture
Government•Rio de Janeiro, Brazil•
About: Ministry of Agriculture is a government organization based out in Rio de Janeiro, Brazil. It is known for research contribution in the topics: Chemistry & Salmonella. The organization has 1153 authors who have published 1189 publications receiving 14442 citations.
Topics: Chemistry, Salmonella, Detection limit, Quechers, Population
Papers published on a yearly basis
Papers
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TL;DR: In this paper, an estudo for caracterizar a situacao epidemiologica da brucelose bovina no Estado do Espirito Santo was conducted.
Abstract: Realizou-se um estudo para caracterizar a situacao epidemiologica da brucelose bovina no Estado do Espirito Santo. O Estado foi dividido em dois circuitos produtores. Em cada circuito foram amostradas aleatoriamente cerca de 300 propriedades e, dentro dessas, foi escolhido de forma aleatoria um numero pre-estabelecido de animais, dos quais foi obtida uma amostra de sangue. No total, foram amostrados 5.351 animais, provenientes de 622 propriedades. Em cada propriedade amostrada foi aplicado um questionario epidemiologico para verificar o tipo de exploracao e as praticas de criacao e sanitarias que poderiam estar associadas ao risco de infeccao pela doenca. O protocolo de testes utilizado foi o da triagem com o teste do antigeno acidificado tamponado e o reteste dos positivos com o teste do 2-mercaptoetanol. O rebanho foi considerado positivo quando pelo menos um animal foi reagente as duas provas sorologicas. Para o Estado, as prevalencias de focos e de animais infectados foram, respectivamente, de 9,0% [7,0-11,6%] e 3,5% [1,9-6,4%]. Para os circuitos, as prevalencias de focos e de animais infectados foram, respectivamente, de: circuito 1, 6,8% [4,5-10,2%] e 3,4% [1,3-8,6%]; circuito 2, 10,9% [7,9%-14,8%] e 3,7% [2,1-6,3%]. Os fatores de risco (odds ratio, OR) associados a condicao de foco foram: utilizacao de inseminacao artificial (OR = 7,05 [2,51-19,82]) e confinamento/semiconfinamento dos animais (OR = 2,98 [1,22-7,26]). A vacinacao de femeas entre tres e oito meses de idade foi um fator protetor (OR = 0,03 [0,01-0,1]).
35 citations
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TL;DR: In this article, the authenticity of Minas Frescal cheese was assessed using SDS-PAGE in 21 commercial samples acquired in Southern Brazil and the results indicated the irregular presence of whey in the composition of these products, contrary to the enzymatic process legally required.
35 citations
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16 Feb 2015-Food Additives and Contaminants Part A-chemistry Analysis Control Exposure & Risk Assessment
TL;DR: A fast and simple analytical method for the determination of quinolones and fluoroquinolones, tetracyclines and sulfonamides in bovine liver samples using LC-MS/MS and accuracy was between 86% and 110%.
Abstract: Antibacterials are widely used in veterinary medicine. Residues of these drugs can remain in food of animal origin, including bovine liver. This paper describes a fast and simple analytical method for the determination of quinolones and fluoroquinolones, tetracyclines and sulfonamides in bovine liver samples. Deuterated enrofloxacin, sulfapyridine and demeclocycline were used as internal standards. The homogenised liver samples were extracted with acidified acetonitrile. Steps of non-solid-phase extraction (SPE) clean-up and concentration were used in the presented method. The final extracts were analysed by sensitive and selective detection of all components in a single run using LC-MS/MS. Acceptable recoveries between 66% and 110% were obtained. Good linearity (r2) above 0.96, considering three different days, for all drugs was achieved in concentrations ranging from 0.0 to 2.0 × the maximum residue limit (MRL). Intraday precision with coefficient of variation (CV%) (n = 6) lower than 14.7% and inter-da...
35 citations
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TL;DR: In this article, a detailed procedure for in-house method validation was proposed and applied to the validation of a method for determination of arsenic in bovine liver, where data were fitted by ordinary least squares method (OLSM). Violations of assumptions underlying OLSM residuals were evaluated.
34 citations
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TL;DR: The proposed analytical method for lactic acid quantification in milk by ion exclusion-HPLC with UV detection proved to be a useful quality control tool in laboratories because it was able to determine milk acidity even in adulterated samples.
34 citations
Authors
Showing all 1177 results
Name | H-index | Papers | Citations |
---|---|---|---|
Otto R. Gottlieb | 36 | 325 | 6011 |
Paloma Melgarejo | 32 | 108 | 2679 |
Andrey Pereira Lage | 29 | 158 | 3081 |
Julián Santiago-Moreno | 28 | 154 | 2518 |
Antonio López-Sebastián | 28 | 112 | 2309 |
Paulo Sávio Lopes | 28 | 285 | 2994 |
Alice Y.M. Jones | 27 | 119 | 3218 |
Vitor Salvador Picão Gonçalves | 25 | 72 | 1565 |
José Soares Ferreira Neto | 24 | 142 | 2012 |
Zilca Campos | 22 | 64 | 1332 |
Rodrigo Barcellos Hoff | 21 | 60 | 1137 |
Rodinei Augusti | 21 | 27 | 1630 |
Fabiano Barreto | 20 | 72 | 1091 |
Márcio Machado Ladeira | 19 | 86 | 1018 |
Daniel Vidal Pérez | 19 | 115 | 1101 |