Efeitos antifúngico e antiaflatoxigênico de timol e carvacrol em Aspergillus flavus
DOI:
https://doi.org/10.17765/2176-9206.2021v14n1.e7727Palavras-chave:
Aflatoxinas, Agentes antimicrobianos, Micotoxinas, Produtos naturais, TerpenosResumo
O objetivo deste estudo foi avaliar os efeitos do timol e carvacrol contra Aspergillus flavus e a produção de aflatoxinas. Foram determinadas a concentração inibitória mínima (CIM), o espectro fungitóxico e a atividade inibidora de micotoxinas pelo timol e carvacrol. Os resultados mostraram que timol e carvacrol exibiram ação fungicida de acordo com a CIM de 2500 e 30 µg mL-1, respectivamente. Tanto o timol quanto o carvacrol inibiram significativamente o crescimento de A. flavus (p<0,05) a partir de 600 e 15 µg mL-1, respectivamente. A biomassa fúngica, estimada pela determinação da concentração de ergosterol, foi significativamente reduzida (p <0,05) em 2500 µg mL-1 de timol e 250 µg mL-1 de carvacrol. O timol e o carvacrol exibiram efeitos antiaflatoxigênicos em 600 e 125 µg mL-1, respectivamente. O timol e o carvacrol exibiram atividade antifúngica, mas não exibiram alta atividade antiaflatoxigênica. Carvacrol e timol podem ser considerados como potentes compostos naturais antifúngicos contra A. flavus.Downloads
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