Escherichia coli inhibition and inactivation by extracts from plants with medicinal and spice ethnographic indicative

Abstract

The in vitro Intensity of Bacterial Inhibition Activity (IINIB) and the Intensity of Bacterial Inactivation Activity (IINAB) of diverse aqueous alcoholic/hydroalcoholic from extracts of 59 plants with medicinal or spice ethnographic indicative assessed in Porto Alegre/RS/BR, were determinated against Escherichia sp. (or E. coli ATCC n° 11229 or E. coli p.16 CPVDF - SAA/RS) in challenge doses ≤ 108 CFU.mL-1. Extracts of 30 plants presented some anti-Escherichia coli selective activity while the remaining 29 plants presented no activity. The validity of ethnographical search instruments in the prospection of anti-bacterial protection factors in plants and the influence of inhibition/inactivation results in the prediction of E. coli diagnostic were discussed.