Poliana de Castro Melo

ORCID: 0000-0003-0774-6211
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About
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Research Areas
  • Milk Quality and Mastitis in Dairy Cows
  • Microbial Metabolism and Applications
  • Bacterial biofilms and quorum sensing
  • Antimicrobial Resistance in Staphylococcus
  • Food Safety and Hygiene
  • Probiotics and Fermented Foods
  • Identification and Quantification in Food
  • Chromium effects and bioremediation
  • Enterobacteriaceae and Cronobacter Research
  • Microbial infections and disease research
  • Mosquito-borne diseases and control
  • Digestive system and related health
  • Salmonella and Campylobacter epidemiology
  • Dye analysis and toxicity
  • Listeria monocytogenes in Food Safety
  • Antimicrobial agents and applications
  • Antimicrobial Peptides and Activities
  • Wound Healing and Treatments
  • Agricultural and Food Sciences
  • Consumer Attitudes and Food Labeling
  • Dental materials and restorations
  • Animal Disease Management and Epidemiology
  • Oral microbiology and periodontitis research
  • Brucella: diagnosis, epidemiology, treatment
  • Zoonotic diseases and public health

Universidade Estadual de Santa Cruz
2014-2022

Universidade Federal de Uberlândia
2020

Universidade Federal do Triângulo Mineiro
2020

Universidade Estadual Paulista (Unesp)
2010-2013

Biofilm formation is considered to be a selective advantage for Staphylococcus aureus mastitis isolates by facilitating bacterial persistence in the udder. It requires attachment mammary epithelium, proliferation and accumulation of cells multilayers. The objective this study was determine sensitivity specificity three techniques detection S. biofilm-positive strains. Two phenotypic tests, including growth on microtitre plates Congo red agar, were compared with PCR technique using 94 strains...

10.1590/s1517-83822013005000031 article EN Brazilian Journal of Microbiology 2013-01-01

Biofilms constitute a physical barrier, protecting the encased bacteria from detergents and sanitizers. The objective of this work was to analyze effectiveness sodium hypochlorite (NaOCl) against strains Staphylococcus aureus isolated raw milk cows with subclinical mastitis milking environment (blowers conducting tubes). results revealed that, in presence NaOCl (150ppm), number adhered cells twelve S. significantly reduced. When same were evaluated biofilm condition, different obtained. It...

10.1590/s0100-736x2014000200002 article EN cc-by Pesquisa Veterinária Brasileira 2014-02-01

Staphylococcus aureus causes nosocomial and intramammary infections in humans cattle, respectively. A large number of virulence factors are thought to play important roles the pathogenesis this bacterium. Currently, genome-wide data-analysis studies being used better understand its epidemiology. In study, we conducted a genome wide comparison phylogenomic analyses S. find specific patterns associated with clinical subclinical mastitis strains cattle compare them those human origin. The...

10.3389/fmicb.2022.1033675 article EN cc-by Frontiers in Microbiology 2022-11-07

Introduction:The ability of staphylococci to produce biofilm is an important virulence mechanism that allows bacteria both adhere and live on artificial surfaces resist the host immune factors antibiotics.Staphylococcal infections have become increasingly difficult treat due their antibiotic resistance.Therefore, there a continuous need for new effective treatment alternatives against staphylococcal infections.The main goal this study was test N-acetylcysteine (NAC) vancomycin alone in...

10.4322/rbeb.2013.019 article EN Revista Brasileira de Engenharia Biomédica 2013-01-01

The presence of biofilm-forming bacteria from the mammary gland dairy cows adhered to equipment in milking environment represents one major causes bacterial resistance during mastitis treatment. aim this study was identify strains Staphylococcus aureus, epidermidis and Escherichia coli milk samples with mastitis, as well expansion tank set liners. We aimed quantify extracellular proteins polysaccharides biofilm produced by each strain. A total 294 were collected a farm municipality...

10.5433/1679-0359.2017v38n4p1887 article EN publisher-specific-oa Semina Ciências Agrárias 2017-08-04

We studied the molecular epidemiology of Staphylococcus aureus strains potentially toxigenic, isolated from production process Minas frescal cheese in a small dairy plant state São Paulo. For this, samples were taken during period June 2008 to July 2009. Samples collected surface receiving and storage tanks raw milk, balance tank pasteurized water supply system, pipes equipments, hands handler packaged cheese, totaling 140 samples. The colonies on Baird-Parker Agar confirmed as Gram positive...

10.5216/cab.v14i1.14972 article EN cc-by Ciência Animal Brasileira 2013-03-27

A raiva é uma antropozoonose causada por um vírus transmitido pelo contato com a saliva de mamíferos infectados, principalmente através da mordedura ou lambedura mucosas. O objetivo desse estudo foi analisar cobertura vacinal contra na cidade Jatai- GO 2010 2018. Utilizando dados cedidos pela Unidade Vigilância em Zoonoses do município pode ser observado que nos anos não houve cálculo falta e 2011 2015 vacinação. Já 2012, 2013 2014 85%, 99% 116% respectivamente e, após esse crescimento...

10.33448/rsd-v9i7.4223 article PT Research Society and Development 2020-05-17

The epidemiological relationships between isolated Staphylococcus aureus strains in milk samples of dairy cows, reagent to California Mastitis Test, individual and group was demonstrated different sites the production fluxogram, 12 milk-producing farms Gameleira region, municipality Sacramento MG Brazil, so that localization transmission modes may be identified. Two hundred forty-four out 446 collected at several were bio-chemically characterized as coagulase-positive staphylococcus....

10.1590/s1517-83822012000400050 article EN Brazilian Journal of Microbiology 2012-12-01

<p>Os <em>Staphylococcus, </em>principais agentes causadores da mastite, quando em biofilmes, estão relacionados a uma série de mecanismos resistência diferentes tipos infecções. O presente trabalho avaliou susceptibilidade e dos <em>Staphylococcus aureus</em>, isolados casos mastite bovina do ambiente ordenha, condições biofilme, frente três antimicrobianos distintos concentrações. Foram utilizadas trinta duas estirpes <em>S. aureus </em>testadas...

10.11606/issn.1678-4456.v52i3p228-233 article PT cc-by-nc Brazilian Journal of Veterinary Research and Animal Science 2015-09-30

The objective of this study was to verify the isolation tax by immunomagnetic separation (IMS) strains Shigatoxin producing Escherichia coli serogroups O157 and O111 in dairy farms Jaboticabal-SP, Brazil, starting from positive samples, detected polimerase chain reaction (PCR). Initially feces, water milk samples were submitted a selection process, through PCR multiplex, order detect presence sequences stx 1 , 2 eae . All first phase new targeting rfb O111, what resulted in, respectively,...

10.5216/cab.v9i3.433 article EN Ciência Animal Brasileira 2008-10-15

The purpose of this study was to evaluate the microbiological conditions food served in self-service restaurants Itumbiara-GO. In total, we studied 23 and foods collected were: pasta, tomato cucumber salad, mayonnaise meat from pan. samples were acquired with support municipality's sanitary inspectors. Our research focused on total mesophiles, coagulase positive taphylococci heat tolerant coliforms. sample preparations their dilutions performed according technique recommended by Compendium...

10.5007/2175-7925.2010v23n4p129 article EN cc-by Biotemas 2010-01-01
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