Encyclopedia of Essential Oils: The complete guide to the use of aromatic oils in aromatherapy, herbalism, health and well-being.. Julia Lawless

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СКАЧАТЬ It clears the head, relieves intellectual fatigue, and gives the mind strength and clarity.’⁸

      OTHER USES The oil is used in soaps, cosmetics and perfumery; it is also used extensively in major food categories, especially savouries.

BAY, WEST INDIAN

      Pimenta racemosa

      FAMILY Myrtaceae

      SYNONYMS Myrcia acris, Pimenta acris, myrcia, bay, bay rum tree, wild cinnamon, bayberry, bay leaf (oil).

      GENERAL DESCRIPTION A wild-growing tropical evergreen tree up to 8 metres high, with large leathery leaves and aromatic fruits.

      DISTRIBUTION Native to the West Indies, particularly Dominica where the essential oil is produced.

      OTHER SPECIES There are several other varieties, for example the anise-scented and lemon-scented bay, the oils of which have a totally different chemical composition. Not to be confused with bay laurel, the common household spice, nor with the North American bayberry or wax myrtle (Myrcia cerifera) well known for its wax yielding berries.

      HERBAL/FOLK TRADITION The West Indian bay tree is often grown in groves together with the allspice or pimento bush, then the fruits of both are dried and powdered for the preparation of the household allspice. The so-called bay rum tree also provides the basic ingredient for the famous old hair tonic, which is made from the leaves by being distilled in rum. ‘A hair application with both fragrant and tonic virtues … useful for those who suffer from greasy hair and need a spirit-based, scalp-stimulating lotion to help them to control their locks!’⁹

      ACTIONS Analgesic, anticonvulsant, antineuralgic, antirheumatic, antiseptic, astringent, expectorant, stimulant, tonic (for hair).

      EXTRACTION Essential oil by water or steam distillation from the leaves. An oleoresin is also produced in small quantities.

      CHARACTERISTICS A dark yellow mobile liquid with a fresh-spicy top note and a sweet-balsamic undertone. It blends well with lavander, lavandin, rosemary, geranium, ylang ylang, citrus and spice oils.

      PRINCIPAL CONSTITUENTS Eugenol (up to 56 per cent), myrcene, chavicol and, in lesser amounts, methyl eugenol, linalol, limonene, among others.

      SAFETY DATA Moderately toxic due to high eugenol content; also a mucous membrane irritant – use in moderation only. Unlike bay laurel, however, it does not appear to cause dermal irritation or sensitization.

       AROMATHERAPY/HOME USE

      Skin Care: Scalp stimulant, hair rinse for dandruff, greasy, lifeless hair, and premoting growth.

      Circulation, Muscles And Joints: Muscular and articular aches and pains, neuralgia, poor circulation, rheumatism, sprains, strains.

      IMMUNE SYSTEM: Colds, ’flu, infectious diseases.

      OTHER USES Extensively used in fragrance work, in soaps, detergents, perfumes, aftershaves and hair lotions, including bay rum. Employed as a flavour ingredient in many major food categories, especially condiments, as well as alcoholic and soft drinks.

BENZOIN

      Styrax benzoin

      FAMILY Styracaceae

      SYNONYMS Gum benzoin, gum benjamin, styrax benzoin.

      GENERAL DESCRIPTION A large tropical tree up to 20 metres high with pale green citrus-like leaves, whitish underneath, bearing hard-shelled flattish fruit about the size of a nutmeg. The benzoin is a pathological product, formed when the trunk is cut; the tree exudes a balsamic resin which hardens upon exposure, to air and sunlight.

      DISTRIBUTION Native to tropical Asia; the two main regions of production are Sumatra, Java and Malaysia for ‘Sumatra’ benzoin, and Laos, Vietnam, Cambodia, China and Thailand for ‘Siam’ benzoin.

      OTHER SPECIES There are many different varieties within the Styrax family which produce benzoin, but these are generally classified under either Sumatra benzoin (S. paralleloneurus) or Siam benzoin (S. tonkinensis) – see also Botanical Classification section.

      HERBAL/FOLK TRADITION It has been used for thousands of years in the east as a medicine and incense; the fumigations were believed to drive away evil spirits. It was used by the Chinese herbalists for its heating and drying qualities, as a good urinary antiseptic and as an aid to digestion.

      In the west, it is best known in the form of compound tincture of benzoin or Friars Balsam, used for respiratory complaints. Externally it is used for cuts and irritable skin conditions; internally it is used as a carminative for indigestion, etc. It also acts as a preservative of fats.

      ACTIONS Anti-inflammatory, anti-oxidant, antiseptic, astringent, carminative, cordial, deodorant, diuretic, expectorant, sedative, styptic, vulnerary.

      EXTRACTION The crude benzoin is collected from the trees directly. Benzoin resinoid, or ‘resin absolute’, is prepared from the crude using solvents, for example benzene and alcohol, which are then removed. Commercial benzoin is usually sold dissolved in ethyl glycol or a similar solvent. A ‘true’ absolute is also produced in small quantities.

      CHARACTERISTICS 1. Sumatra crude benzoin occurs as greyish-brown brittle lumps with reddish streaks, with a styrax-like odour. There are several different qualities available; the so-called ‘almond’ grade is considered superior. 2. Siam benzoin comes in pebble or tear-shaped orange-brown pieces, with a sweet-balsamic vanilla-like scent, this type having a more refined odour than the Sumatra type.

      Benzoin resinoid is produced from both the Siam and Sumatra types, or a mix of the two. It is an orange-brown viscous mass with an intensely rich sweet-balsamic odour. It blends well with sandalwood, rose, jasmine, copaiba balsam, frankincense, myrrh, cypress, juniper, lemon, coriander and other spice oils.

      PRINCIPAL CONSTITUENTS 1. Sumatra Benzoin: mainly coniferyl cinnamate and sumaresinolic acid, with benzoic acid, cinnamic acid, and traces of styrene, vanillin and benzaldehyde. 2. Siam benzoin: mainly coniferyl benzoate (65–75 per cent), with benzoic acid, vanillin, siaresinolic acid and cinnamyl benzoate.

      SAFETY DATA Non-toxic, non-irritant, possible sensitization. Compound benzoin tincture is ‘regarded as moderately toxic, due probably to occasional contact dermatitis developed in some individuals … which contains, in addition to benzoin, aloe, storax, Tolu balsam and others.’¹⁰

       AROMATHERAPY/HOME USE

      Skin Care: Cuts, chapped skin, inflamed and irritated conditions.

      Circulation, Muscles And Joints: Arthritis, gout, СКАЧАТЬ