Occurrence of toxigenic fungi in herbal drugs

O aumento no consumo de produtos naturais transformou seu uso em um problema de Saude Publica devido a possibilidade do acesso a produtos sem adequadas condicoes de uso. A preocupacao com a qualidade dos produtos naturais e devida a potencialidade de contaminacao por fungos e ao risco da presenca de micotoxinas. Noventa e uma amostras de plantas medicinais foram avaliadas quanto a contaminacao fungica e ao potencial micotoxigenico de Aspergillus e Penicillium isolados nestas amostras. Os resultados indicaram que a micoflora predominante esteve distribuida entre 10 generos. Entretanto, 89,9% dos isolados corresponderam aos generos Aspergillus e Penicillium, extremamente importantes do ponto de vista micotoxicologico. Verificou-se que 21,97% dos isolados de Aspergillus e Penicillium demonstraram capacidade para produzir aflatoxinas (42,9%), ocratoxina A (22,4%) e citrinina (34,7%). A presenca de fungos toxigenicos representa risco potencial de contaminacao com micotoxinas e considerando o aumento no consumo de produtos de origem vegetal como alternativa terapeutica, e necessario estabelecer padroes para a presenca de fungos toxigenicos em drogas vegetais a fim de reduzir os riscos a saude do consumidor.

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