OREGANO LEAF(ORIGANUM VULGARE)

Oregano scientifically named Origanum vulgare by Carolus Linnaeus, is a common species of Origanum, a genus of the mint family (Lamiaceae). It is native to warm-temperate western and southwestern Eurasia and the Mediterranean region. Oregano is a perennial herb, growing from 20?80 cm tall, with opposite leaves 14 cm long. Oregano will grow in a pH range between 6.0 (mildly acid) and 9.0 (strongly alkaline) with a preferred range between 6.0 and 8.0. The flowers are purple, 34 mm long, produced in erect spikes. It is sometimes called wild marjoram, and its close relative O. majorana is known as sweet marjoram.

MEDICINAL

Hippocrates used oregano as an antiseptic, as well as a cure for stomach and respiratory ailments. A Cretan oregano (O. dictamnus) is still used today in Greece as a palliative for sore throat. Oregano is high in antioxidant activity, due to a high content of phenolic acids and flavonoids. It also has shown antimicrobial activity against strains of the food-borne pathogen Listeria monocytogenes. In 2005, the US Federal Trade Commission brought legal action against a firm that had claimed oil of oregano treated colds and flus, and that oil of oregano taken orally treated and relieved bacterial and viral infections and their symptoms, saying the representations were false or were not substantiated at the time the representations were made, and that they were therefore a deceptive practice and false advertisements. The final stipulation on the matter said no representation as to any health benefit could be made without "competent and reliable scientific evidence".

BIOCHEMISTRY

The main chemical constituents include carvacrol, thymol, limonene, pinene, ocimene, and caryophyllene. The leaves and flowering stems are strongly antiseptic, antispasmodic, carminative, cholagogue, diaphoretic, emmenagogue, expectorant, stimulant, stomachic and mildly tonic.

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