Synergism between plant extract and antimicrobial drugs used on Staphylococcus aureus diseases

Joyce Elaine Cristina Betoni, Rebeca Passarelli Mantovani, Lidiane Nunes Barbosa, Luiz Claudio Di Stasi, Ary Fernandes Junior
2006 Memórias do Instituto Oswaldo Cruz  
Searches for substances with antimicrobial activity are frequent, and medicinal plants have been considered interesting by some researchers since they are frequently used in popular medicine as remedies for many infectious diseases. The aim of this study was to verify the synergism between 13 antimicrobial drugs and 8 plant extracts -"guaco" (Mikania glomerata), guava (Psidium guajava), clove (Syzygium aromaticum), garlic (Allium sativum), lemongrass (Cymbopogon citratus), ginger (Zingiber
more » ... inale), "carqueja" (Baccharis trimera), and mint (Mentha piperita) -against Staphylococcus aureus strains, and for this purpose, the disk method was the antimicrobial susceptibility test performed. Petri dishes were prepared with or without dilution of plant extracts at sub-inhibitory concentrations in Mueller-Hinton Agar (MHA), and the inhibitory zones were recorded in millimeters. In vitro anti-Staphylococcus aureus activities of the extracts were confirmed, and synergism was verified for all the extracts; clove, guava, and lemongrass presented the highest synergism rate with antimicrobial drugs, while ginger and garlic showed limited synergistic capacity.
doi:10.1590/s0074-02762006000400007 pmid:16951808 fatcat:qndexhv3ebfndbyp3im6rdso5e