In vitro antimicrobial activity, total polyphenols and flavonoids contents of Nopalea cochenillifera (L.) Salm-Dyck (Cactaceae)

This study evaluated the antimicrobial activity in vitro qualitative and quantitativemethods, and made the determination of total polyphenols and flavonoids in the ethanolextract of Nopalea cochenillifera. The assessment determined the antimicrobial minimuminhibitory concentration (MIC) against Escherichia coli, Salmonella typhi, Micrococcus,Klebsiella pneumoniae, Staphylococcus aureus, Candida albicans, Candida glabrata,Prototheca zopffi, Cryptococcus neoformans, Saccharomyces cervisiae e Malassezia furfur.The determination of total polyphenols and flavonoids were significant when comparedrespectively to the standards of gallic acid and rutin.