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Navegando Ciências Biológicas- Licenciatura por Assunto "Água mineral"
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Monografia Acesso embargado Perfil de suscetibilidade antimicrobiana de bactérias isoladas de água mineral(2018) Matos, Aline ÁvilaThere is a perception that the consumption of natural mineral water represents a healthy style of life and that these products are relatively safe, free of impurities, which leads to increased potting and marketing of these waters. The lack of potability of water is not always perceptible to sight or smell, and a laboratory analysis is necessary to detect it. It becomes important the microbiological control of water due to its characteristic of transmission vehicle of bacteria, protozoa, viruses and fungi causing numerous diseases. These microorganisms are responsible for the occurrence of dysentery, hepatitis, cholera, among other serious diseases. For this reason, this research had as objective to analyze the presence of bacteria in mineral water samples commercialized in the city of Tubarão - SC and to evaluate the susceptibility of the isolated microorganisms to antibiotics. In the present study, fourteen mineral water samples of different brands were analyzed. The methodology used in the research for bacterial isolation was the filtering membrane technique in the media General Chromogenic Agar and Pseudomonas Agar. In order to complement the identification, Gram staining was performed, visualizing the morphology, arrangement and staining. The susceptibility profile to different antibiotics was measured by the Kirby-Bauer disk diffusion method. The results of this research revealed that, through microbiological analysis, eleven samples (78.57%) of mineral water presented microbial growth, 71.42% of which were bacteria (76.9% Gram negative and 23.1% Gram positive) and 14.28% fungi. As for the morphology, arrangement and coloration, the bacteria were mostly gram-negative bacilli (46,15%). In the TSA the highest resistance was observed for aztreonam (100%) and the most sensitive were amikacin, ampicillin, cefoxitin, gentamicin, sulfazotrim and tetracycline (0%). All Gram negative isolates were resistant to at least two antimicrobials. Thus, with the results obtained in this research, it is concluded that the mineral waters commercialized in the municipality of Tubarão demonstrate the presence of multiresistant bacteria, a fact that deserves attention due to the impact on public health.