Optimization of the determination of tocopherols in Lamiacea sp. by a normal phase liquid chromatographic method

Many wild plants gathered from the scrubland were preserved and used for medicinal and food purposes in the north-eastern region of Portugal. Sines they are important ingredients of lhe folk pharmacopoeia and lraditional cuisine some of these wi ld botanicals have been semidomesticated and are still cultivaled in homegardens and present in every homesteads. Several ethnobotanical surveys conducted in this Portuguese region have high lighted lhe use of three particular Lamiaceae. Ground ivy (Giechoma hederaceae), oregano (Origanum vulgare subsp. virens) and mastic thyme (Thymus mastichina) are widespread Mediterranean perennial herbs widely considered as medicinal plants, although it has also been reported some other common uses.