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Antimicrobial Activity Of Aqueous Yerba Mate Extracts, Kellie Parks Burris
Antimicrobial Activity Of Aqueous Yerba Mate Extracts, Kellie Parks Burris
Doctoral Dissertations
Ilex paraguariensis, is used in the preparation of a widely popular tea beverage (Yerba Mate) mainly produced and consumed in the countries of Uruguay, Paraguay, Argentina and Brazil. Dialyzed aqueous extracts were screened for antimicrobial activity against Escherichia coli O157:H7, Staphylococcus aureus, methicillin-resistant S. aureus and S. pseudintermedius, and Pseudomonas syringae pv. tomato.
Using a concentrated extract, S. aureus was found to be the more sensitive to extracts than E. coli O157:H7. Minimum inhibitory concentration (MIC) was defined as the lowest concentration of extract tested that did not allow bacterial growth (inhibition) above the original inoculums of …