Palavras-chave
Extrato vegetal
Lactuca sativa
Doenças transmitidas por alimentos
Como Citar
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Resumo
Objetivo: Avaliar a eficácia de sanitizantes naturais, como extratos vegetais e óleos essenciais, na redução de Escherichia coli O157:H7 e Salmonella spp. em folhas de alface. Métodos: Por meio de revisão integrativa da literatura foram selecionados artigos publicados até abril de 2025, localizados nas bases PubMed, Science Direct, SciELO e EBSCO. Os critérios de inclusão abrangeram estudos que analisaram a ação antimicrobiana de óleos essenciais ou extratos vegetais em variedades de alface contaminadas com E. coli O157:H7 e Salmonella spp. Resultados: Dos 234 estudos inicialmente identificados, sete atenderam aos critérios estabelecidos. Os sanitizantes naturais apresentaram redução média de 1,55 log UFC/g, superior à da água (0,5 log UFC/g; p < 0,001) e semelhante ao cloro (1,95 log UFC/g; p = 0,274). O óleo essencial de tomilho destacou-se com reduções superiores a 3 log UFC/g. Não houve diferenças significativas entre os microrganismos e tipos de sanitizantes. Variáveis como concentração, tempo de tratamento e secagem não influenciaram a eficácia. Considerações finais: Apesar da variabilidade, sanitizantes naturais mostram-se promissores, especialmente se aliados a tecnologias como a microencapsulação. A ausência de padronização destaca a necessidade de mais pesquisas para garantir a segurança e aplicação comercial.
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