Staphylococcus
Mostrando 37-48 de 9109 artigos, teses e dissertações.
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37. [Multirresistência e fatores de virulência de Staphylococcus aureus isolados de suínos]
RESUMO A emergência de cepas de Staphylococcus aureus resistentes à meticilina associadas à pecuária (LA-MRSA) e o papel potencial dos suínos na evolução dessas cepas têm levado ao aumento do interesse na pesquisa desses microrganismos. No entanto, isso tem contribuído para a falta de estudos sobre o isolamento e a caracterização de cepas de S. au
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2021-03
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38. Evaluation of a rapid detection method of Salmonella in comparison with the culture method and microbiological quality in fish from the Brazilian Amazon
Abstract Microbiological safety of fish is a concern of consumers, industries and regulatory agencies worldwide. Among the pathogenic microorganisms, Salmonella spp. is one of the main agents of foodborne diseases and should be absent in animal products. Rapid and accurate identification of pathogens in the supply chain is important for both quality assuranc
Food Sci. Technol. Publicado em: 2021-03
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39. Evaluation of Antibacterial Activity, Chromatographic Analysis for Rutin and Quercetin Quantification Using HPLC-UV-Vis from the Hydro-Alcoholic Extract Obtained from Bidens pilosa Linné
Novel and miniaturized technique, a dynamic sonication-assisted solvent extraction before the analysis by high performance liquid chromatography-ultraviolet visible (HPLC-UV-Vis) for isolation, identification and quantification of rutin and quercetin metabolites in alcoholic extracts from Bidens pilosa Linné, was developed. The results showed that the flowe
J. Braz. Chem. Soc.. Publicado em: 2021-03
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40. Qualidade microbiológica da água e dos mexilhões Perna perna (Linnaeus, 1758) cultivados em Piúma, Espírito Santo, Brasil
RESUMO Este estudo objetivou verificar a qualidade microbiológica da água e dos mexilhões cultivados pela Associação dos Maricultores de Piúma (AMPI), Espírito Santo, Brasil. Foram realizadas sete coletas de água e mexilhões, mensalmente, entre outubro de 2016 e maio de 2017. Os mexilhões foram coletados nos long lines da AMPI, e em cada mês foram
Eng. Sanit. Ambient.. Publicado em: 2021-02
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41. Assessment of the Physicochemical Quality Indicators and Microbiological Effects of Brazilian Ozonized Vegetable Oils
The study of quality indicators in the process of obtaining ozonized vegetable oils is useful for monitoring the ozonation reaction. The Brazilian oils “dendê”, soy, corn, rice and sunflower were studied, all of them were ozonated applying different doses of ozone. Ozonized oils were evaluated by determining the physicochemical indexes of peroxide, acid
J. Braz. Chem. Soc.. Publicado em: 2021-01
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42. Mastite gangrenosa em ovinos causada por Staphylococcus haemolyticus multirresistente
RESUMO: A mastite é uma doença multifatorial e é considerada um dos problemas mais importantes na indústria de laticínios no mundo todo. A condição é caracterizada pela redução de leite e várias anormalidades na glândula mamária. O objetivo deste estudo foi relatar um surto de mastite gangrenosa causada por Staphylococcus haemolyticus multirresi
Pesq. Vet. Bras.. Publicado em: 2020-12
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43. Ovarian hormones influence immune response to Staphylococcus aureus infection
ABSTRACT Objective: Staphylococcus aureus infections remain associated with considerable morbidity and mortality in both hospitals and the community. There is little information regarding the role of ovarian hormones in infections caused by S. aureus. The aim of this study was to evaluate the effects of ovariectomy in the immune response induced by S. aureu
Braz J Infect Dis. Publicado em: 2020-12
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44. Desenvolvimento de filtros cerâmicos com níquel e prata suportados em argila montmorilonita K10 para desinfecção de água
Resumo Este trabalho visou a obtenção de filtros cerâmicos com ação bactericida para desinfecção de água. Para isto, suspensões aquosas de argila montmorilonita K10 foram preparadas nas concentrações de 48%, 50% e 52% e impregnadas em esponjas poliméricas para formação dos esqueletos cerâmicos por meio do método de réplica. Os filtros cerâm
Cerâmica. Publicado em: 2020-12
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45. Antibacterial activity of essential oils encapsulated in chitosan nanoparticles
Abstract In this study, cinnamon (Cinnamomum zeylanicum), thyme (Thymus vulgaris) and Schinus molle essential oils (at 125, 250 and 500 µg/mL) were encapsulated in chitosan nanoparticles by ionotropic gelation. Their antimicrobial activity against Staphylococcus aureus ATCC 25923, Enterococcus sp., Escherichia coli ATCC 25922, Klebsiella pneumoniae (BLEE +)
Food Sci. Technol. Publicado em: 2020-12
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46. Synthesis and Antioxidant and Antimicrobial Properties of β-Hydroxy Sulfides, Sulfoxides, and Sulfones Derived from Cardanol and Glycerol Derivatives
Natural and synthetic sulfur-bearing organic compounds have many applications in medicinal chemistry. This article reports the preparation of amphiphilic β-hydroxy sulfides, sulfoxides, and sulfones derived from cardanol and glycerol. Thiolysis of cardanol epoxide 3 with various thiols (4a-4j) in ethanol or water yielded the corresponding β-hydroxy sulfide
J. Braz. Chem. Soc.. Publicado em: 2020-12
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47. Bergenin of Peltophorum dubium (Fabaceae) Roots and Its Bioactive Semi-Synthetic Derivatives
This work describes the isolation of pure bergenin from Peltophorum dubium roots with good yields and its further derivatization through Williamson synthesis. The alkyl derivatives of the bergenin were identified by nuclear magnetic resonance and mass spectrometry data analysis. Among them, three derivatives were reported for the first time herein, 8,10-dihe
J. Braz. Chem. Soc.. Publicado em: 2020-12
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48. Synthesis, in silico Study and Antimicrobial Activity of New Piperine Derivatives Containing Substituted δ-Esters
A series of fifteen new piperine-derived diesters was synthesized through the substitution reaction between the salt of piperic acid, obtained through piperine basic hydrolysis, with the δ-chloro-esters, obtained through the cleavage of tetrahydrofuran (THF) with acyl chlorides in the presence of ZnCl2. The final compounds were obtained with yields ranging
J. Braz. Chem. Soc.. Publicado em: 2020-12