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Information Journal Paper

Title

Antibiotic Resistance and Biofilm Production in Catalase-Positive Gram-Positive Cocci Isolated from Brazilian Pasteurized Milk

Pages

  67-74

Abstract

 Background: Milk is a reservoir for several groups of microorganisms, which may pose health risks. The aim of this work was to assess the antibiotic resistance and biofilm production in catalase-positive Gram-Positive Cocci isolated from Brazilian pasteurized Milk. Methods: The bacteria were isolated using Baird-Parker agar and identified by Matrix-Assisted Laser Desorption/Ionization-Time-Of-Flight (MALDI-TOF) mass spectrometer. Disk diffusion technique was used to evaluate antiMicrobial susceptibility. For qualitative evaluation of biofilm production, the growth technique was used on Congo Red Agar. Results: Totally, 33 out of 64 isolates were identified, including Staphylococcus epidermidis (n=3; 4. 7%), Macrococcus caseolyticus (n=14; 21. 9%), and Kocuria varians (n=16; 25%). Twenty-two isolates were resistant to at least one antibiotic. Biofilm production was detected in only 5 isolates of K. varians and 1 isolate of S. epidermidis. All 14 M. caseolyticus isolates were resistant to at least one antibiotic; but, multidrug resistant (MDR) isolates were not detected. Among all K. varians isolates, 4 were resistant to at least one antibiotic from three different classes and were considered to be MDR. Conclusion: The presence of antibiotic-resistant M. caseolyticus, S. epidermidis, and K. varians isolates, especially MDRs, in Milk samples highlights the possible role of Milk as a reservoir of resistance genes.

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    Cite

    APA: Copy

    Machado, M.A.A., Ribeiro, W.A., Toledo, V.S., Ramos, G.L.P.A., Vigoder, H.C., & Nascimento, J.S.. (2020). Antibiotic Resistance and Biofilm Production in Catalase-Positive Gram-Positive Cocci Isolated from Brazilian Pasteurized Milk. JOURNAL OF FOOD QUALITY AND HAZARDS CONTROL, 7(2), 67-74. SID. https://sid.ir/paper/768401/en

    Vancouver: Copy

    Machado M.A.A., Ribeiro W.A., Toledo V.S., Ramos G.L.P.A., Vigoder H.C., Nascimento J.S.. Antibiotic Resistance and Biofilm Production in Catalase-Positive Gram-Positive Cocci Isolated from Brazilian Pasteurized Milk. JOURNAL OF FOOD QUALITY AND HAZARDS CONTROL[Internet]. 2020;7(2):67-74. Available from: https://sid.ir/paper/768401/en

    IEEE: Copy

    M.A.A. Machado, W.A. Ribeiro, V.S. Toledo, G.L.P.A. Ramos, H.C. Vigoder, and J.S. Nascimento, “Antibiotic Resistance and Biofilm Production in Catalase-Positive Gram-Positive Cocci Isolated from Brazilian Pasteurized Milk,” JOURNAL OF FOOD QUALITY AND HAZARDS CONTROL, vol. 7, no. 2, pp. 67–74, 2020, [Online]. Available: https://sid.ir/paper/768401/en

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