FAMILY: Lamiaceae (Labiatae)
SYNONYMS: Brandy mint, balm mint.
GENERAL DESCRIPTION: A perennial herb up to 1 metre high with underground runners by which it is easily propagated. The ‘white’ peppermint has green stems and leaves; the ‘black’ peppermint has dark green serrated leaves, purplish stems and reddish-violet flowers.
DISTRIBUTION: Originally a cultivated hybrid between M. viridis and M. aquatica, known to have been propagated from before the seventeenth century in England. Naturalized throughout Europe and America, it is cultivated worldwide. The oil is produced mainly in France, England, America, Russia, Bulgaria, Italy, Hungary, Morocco and China.
OTHER SPECIES: There are several different strains or chemotypes of peppermint. In addition there are numerous other species of mint, such as spearmint, apple mint, pennyroyal, water mint and pineapple mint – some of which are used to produce essential oils (see Botanical Classification section). Peppermints grown in northern regions, including the Mitcham peppermint, are considered of superior quality.
HERBAL/FOLK TRADITION: Mints have been cultivated since ancient times in China and Japan. In Egypt evidence of a type of peppermint has been found in tombs dating from 1000 BC. It has been used extensively in Eastern and Western medicine for a variety of complaints, including indigestion, nausea, sore throat, diarrhoea, headaches, toothaches and cramp.
It is current in the British Herbal Pharmacopoeia for intestinal colic, flatulence, common cold, vomiting in pregnancy and dysmenorrhoea.
ACTIONS: Analgesic, anti-inflammatory, antimicrobial, antiphlogistic, antipruritic, antiseptic, antispasmodic, antiviral, astringent, carminative, cephalic, cholagogue, cordial, emmenagogue, expectorant, febrifuge, hepatic, nervine, stomachic, sudorific, vasoconstrictor, vermifuge.
EXTRACTION: Essential oil by steam distillation from the flowering herb (approx. 3–4 per cent yield).
CHARACTERISTICS: A pale yellow or greenish liquid with a highly penetrating, grassy-minty camphoraceous odour. It blends well with benzoin, rosemary, lavender, marjoram, lemon, eucalyptus and other mints.
PRINCIPAL CONSTITUENTS: Menthol (29–48 per cent), menthane (20–31 per cent), menthyl acetate, menthofuran, limonene, pulegone, cineol, among others.
SAFETY DATA: Non-toxic, non-irritant (except in concentration), possible sensitization due to menthol. Use in moderation.
AROMATHERAPY/HOME: USE
Skin care: Acne, dermatitis, ringworm, scabies, toothache.
Circulation muscles and joints: Neuralgia, muscular pain, palpitations.
Respiratory system: Asthma, bronchitis, halitosis, sinusitis, spasmodic cough – ‘When inhaled (in steam) it checks catarrh temporarily, and will provide relief from head colds and bronchitis: its antispasmodic action combines well with this to make it a most useful inhalation in asthma.’.
Digestive system: Colic, cramp, dyspepsia, flatulence, nausea.
Immune system: Colds, ’flu, fevers.
Nervous system: Fainting, headache, mental fatigue, migraine, nervous stress, vertigo.
OTHER USES: Flavouring agent in pharmaceuticals, and ingredient in cough, cold and digestive remedies. Flavouring agent in many foods, especially chewing gum and sweets, alcoholic and soft drinks; also widely used to flavour tobacco. Fragrance component in soaps, toothpaste, detergents, cosmetics, colognes and perfumes.