Antimicrobial activity of hydroalcoholic extracts of “aguaymanto” fruits (Physalis peruviana L.) and “eucalyptus” leaves (Eucalyptus globulus Labill.) against Staphylococcus aureus

Abstract

Aim:   To   determine   the   in   vitro   antimicrobial   activity   of   the   hydroalcoholic   extracts   of   aguaymanto  fruits  (Physalis  peruviana  L.)  and  eucalyptus  leaves  (Eucalyptus  globulus  Labill.)  in  concentrations of 40%, 70% and 100% against Staphylococcus aureus. Material and methods: It was a  comparative  and  experimental  study;  an  oxacillin  resistant  strain  of  Staphylococcusaureus was analyzed with which 15 repetitions were performed for each concentration plus a positive control with  vancomycin.  The  disk-diffusion  antibiogram  test  was  used  to  assess  antimicrobial  activity.  The obtained data were processed in the SPSS Statistics 22 program and were statistically analyzed according to the ANOVA test and the Duncan test. Results: There was a significant difference (p <0.001) in the results of the 3 concentrations of the hydroalcoholic extract of Physalis  peruviana  L.  with the vancomycin control; due to these did not present an antimicrobial activity comparable to the control. As for the hydroalcoholic extract of Eucalyptus globulus Labill., according to Duncan’s test, its antimicrobial activity at a concentration of 100% (16.00 mm) was very similar to the effect produced by vancomycin (16.30 mm) against Staphylococcus aureus. Conclusion: The hydroalcoholic extract of eucalyptus in the 100% concentration was the one with the highest antimicrobial activity against S. aureus.