ANÁLISE DA EFICÁCIA ANTIBACTERIANA DO LYSOFORM® NA DESINFECÇÃO DE SUPERFÍCIES
ANÁLISE DA EFICÁCIA ANTIBACTERIANA DO LYSOFORM® NA DESINFECÇÃO DE SUPERFÍCIES
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DOI: https://doi.org/10.22533/at.ed.3222412081
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Palavras-chave: Desinfecção, microrganismos, agente químico, eficiência.
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Keywords: Disinfection, microorganisms, chemical agent, efficiency.
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Abstract: “Disinfection” is the elimination of microorganisms in vegetative form during the cleaning of inanimate surfaces; "disinfectants" are chemical agents classified by the efficiency of the number of microorganisms eradicated. This study evaluated the antibacterial effectiveness of Lysoform® in disinfecting the floor of a Microbiology Laboratory at the Federal University of Pará. The area analyzed was demarcated and the first collection was carried out with a swab soaked in 0.9% saline solution, which was rubbed on the floor and sown on Nutrient Agar (AN; dirty plate). The surface was disinfected with Lysoform® for 5 minutes (manufacturer's recommendation). The second collection was carried out, which was inoculated in AN (clean plate). The plates were incubated (37°C) and, after 24 hours, macroscopic analysis of the colony forming units (UFC) were done. Gram staining was performed on 6 colonies that were macroscopically different. Their susceptibility profiles were evaluated by disk diffusion: the bacterial suspensions were standardized and seeded on Mueller Hinton agar, where disks were placed with 10µL of 0.12% chlorhexidine, 2.5% sodium hypochlorite, 70% alcohol and Lysoform®, and an erythromycin disc. After incubating the plates (37°C/24h), the halos were measured. Lysoform® reduced bacteria on the floor, as the number of UFC on the dirty floor was greater than on the clean floor. Of the 6 colonies analyzed, 5 were from the dirty plate (C1-C5) and 1 from the clean plate (C6). Only Gram positive bacteria were found: C1-C2 were bacilli and C3-C6 were cocci. Regarding sensitivity, C1 was sensitive to all substances, except alcohol; C2-C4 and C6 were resistant to alcohol and sodium hypochlorite and sensitive to the others. C5 was resistant to alcohol, sodium hypochlorite and erythromycin. Lysoform® was effective in disinfecting the area evaluated, however, the importance of choosing disinfectants used in laboratory environments is reiterated, considering the manufacturer's recommendations, as effectiveness may vary for each microorganism.
- Mellani Vitória de Farias Jucá
- Carlos Daniel Cruz Ribeiro
- Emmanuelle Giuliana Mendes Santana
- Luan Ratis Oliveira
- Rebeca Moraes Pimentel da Costa
- Sandriele dos Passos Aires
- Suellen Emilliany Feitosa Machado