Antibacterial Activity of Some Shrub Leaves Consumed by Goats

Abstract

This study aims to determine the antibacterial activity of extracts obtained from Quercus coccifera, Phillyrea latifolia, and Ephedra major shrubs. Shrub leave samples were harvested in April, July, October, and February. Leaves samples were extracted with distilled water, ethanol, and acetone. The antibacterial activity of leaf extracts from three shrub species was tested against S. aureus (ATCC 25923) and P. aeruginosa (ATCC 27853) bacteria using the disc diffusion method. Shrub extracts obtained from the leaves displaced antibacterial activity against S. aureus. Antibacterial activity was found for water, ethanol, and acetone extracts of Phillyrea latifolia in all sampling periods. Only extracts obtained from Q. coccifera and E. mojar extracted with ethanol showed antibacterial activity. Leave samples harvested in April from E. Major extracted with acetone showed antibacterial activity against S. aureus. The ethanolic extracts of P. latifolia showed the highest antibacterial activity. This activity was comparable to gentamicin and vancomycin in this study condition. Overall, ethanol was the most effective solvent for extract yield.