O objetivo deste trabalho foi avaliar a atividade de ácidos orgânicos e compostos clorados comerciais para o controle de Salmonella spp. A concentração inibitória mínima (CIM) do dióxido de cloro, dicloro isocianurato de sódio e ácidos tricloro isocianúrico, lático e peracético foi determinada para cepas padrões de S. Enteretidis, S. Typhimurium e a S. Heidelberg e avaliada com 54 cepas isoladas de frigorífico. O produto com melhor desempenho foi avaliado em água de chiller artificialmente contaminada com Salmonella spp. Entre os clorados, apenas o dicloro isocianurato (60 mg.L -1 ) foi capaz de inibir Salmonella spp. A CIM dos ácidos lático e peracético variou de 0,5 a 2,0%. Os ácidos peracético (1,0%) e lático (2,0%) foram capazes de inibir 98,14 e 100% das cepas isoladas, respectivamente. O ácido lático a 2,0% foi capaz de inibir completamente o crescimento das três cepas padrões de Salmonella spp. inoculadas na água do chiller. Os dados reforçam a necessidade de discussões para regulamentar o uso do ácido lático na tecnologia de abate de aves.Palavras-chave: ácido lático, ácido peracético, dicloro isocianurato de sódio, Salmonella spp., CIM.
Organic Acids and Chlorine Compounds for Control of Salmonella spp. in PoultryThe aim of this work was to evaluate the activity of organic acids and commercial chlorinated compounds to control Salmonella spp. The minimum inhibitory concentration (MIC) of chlorine dioxide, sodium dichloro isocyanurate and trichloroisocyanuric, lactic and peracetic acids was determined using ATCC strains of S. Enteretidis, S. Typhimurium and S. Heidelberg and 54 strains isolated from the poultry slaughterhouse. Latic acid was evaluated in chiller water artificially contaminated with Salmonella spp. Among chlorinated agentes, only sodium dichloro isocyanurate (60 mg.L -1 ) was able to inhibit Salmonella spp. The MIC of the lactic and peracetic acids ranged from 0.5 to 2.0%. Peracetic (1.0%) and lactic acid (2.0%) were able to inhibit 98.14 and 100% of the isolated strains, respectively. Lactic acid at 2.0% was able to completely inhibit the growth of the three ATCC strains of Salmonella spp. inoculated in the chiller water. The data reinforce the need for discussions to regulate the use of lactic acid in poultry slaughter technology.
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