Abstract
Four essential oil samples of Tunisian Thyme (Coridothymus capitatus (L.) Rchb. f.) were collected from two geographycally different areas, either in vegetative state or flowering, and then analyzed by GC and GC-MS. Antibacterial and antifungal in vitro tests done against pathogenic and saprophytic strains of human and animal skin microflora indicate that samples collected in full flowering period were the most efficient. These strong activities may be linked to high levels of carvacrol.