Antibacterial activity of Stachys persica from Labiatae

The extract or essential oils of some plants show strong antimicrobial activities and could be used as antimicrobial drugs or food preservation. Many spices of Labiataefamily are aromatic plants, which have large amounts of volatile oils and frequently show antimicrobial properties.In this research antimicrobial activity of essential oil and water extract, ethanol extract, acetone extract, methylethyl-ether extract and toluene extract of Stachys persica (Labiatae), were studied on Staphylococcus aureus invitro. Disk diffusion method used todetermining inhibitory caused by the effect of the plant extract essential oils on bacteria. The results of experiments demonstrated that water extract of the plant was not effective on the microorganism. Ethanol and acetone extracts hadn’t antibacterial activities. In contrast,methyl ethyl ether and toluene extracts showed a significant antibacterial effect. Among the extracts, toluene extract had the strongest effect, and then methyl ethyl ketone was effective. Also, the volatile oil of S. persica on S. aureus had a strong effect on the microorganism and essential oil was more effective than extracts.

Keywords:

Stachys persica , Essential oil , Extract , Disk blank