Oregano (Scientific name: Origanum vulgare) is also known as Wild Marjoram, Mountain Mint, Origanum, Wintersweet and Winter Marjoram. This erectly spreading plant has strong aromatic characteristics, with leaves and stems that are fleshy. The leaves of oregano are heart-shaped, with toothed edges, and which, grow for up to 9 meters in length. In other countries, the plant is primarily used as a culinary ingredient. However, in countries like the Philippines, Oregano is a known herbal medicine for its strong anti-oxidant properties. Plant family: Lamiaceae (mint family).
Sensoric quality: Aromatic, warm and slightly bitter. Oregano largely varies in intensity: Good quality is so strong that it almost numbs the tongue, but the cultivars adapted to colder climate have often unsatisfactory flavor.
Main constituents: The essential oil (max. 4%) may contain variable amounts of the two phenols carvacrol and thymol (see also thyme and savory); furthermore, a variety of monoterpene hydrocarbons (limonene, terpinene, ocimene, caryophyllene, beta-bisabolene and p-cymene) and monoterpene alcohols (linalool, 4-terpineol) are reported.
In Mexican oregano (Lippia graveolens) an essential oil of very similar constitution is found. A typical analysis is as follows: 50% thymol, 12% carvacrol, 9% p-cymene and a number of further monoterpenoids (1,8 cineol, gamma-terpinene, terpinene-4-ol and terpinene-4-yl acetate) in amounts between 1 and 5%. Flowering Oregano. This Italian cultivar has an exceptionally intensive flavor.
Origin: Several species of genus Origanum are native to the Mediterranean, all of which are traded as a spice. The influence of climate, season and soil on the composition of the essential oil is greater than the difference between the various species. The most important species are O. vulgare (pan-European), O. onites (Greece, Asia Minor) and O. heracleoticum (Italy, Balkan peninsular, West Asia). A closely related plant is marjoram