Allelopathyc potential of baccharis salicifolia against staphylococcus aureus: Allelopathyc potential of baccharis salicifolia against staphylococcus aureus

Baccharis salicifolia is a species that has been shown to have significant bioactivities; several species of this genus are used in the popular medicine like diuretic, digestive and antifungal; however, there are few studies on the composition and active compounds of Baccharis. Allelopathic potential of ethanolic fractions of B. salicifolia was evaluated on antimicrobial activity against Staphylococcus aureus. The antibacterial activity of the B. salicifolia ethanolic extract on S. aureus was evaluated by the disc method and the bioguide fractionation by Thin Layer Chromatography (CCF) and Chromatography in Column (CC). The results showed that inhibition exists in the various fractions of the ethanolic extract (between 50-80% respectively) with respect to the positive control; The fractionation by CCF and with CC, allowed to evaluate 10 ethanolic fractions which possess the metabolites responsible for the antibacterial activity on S. aureus.