Thuja Health Dictionary

Thuja: From 1 Different Sources


Thuja occidentalis

FAMILY: Cupressaceae

SYNONYMS: Swamp cedar, white cedar, northern white cedar, eastern white cedar, tree of life, American arborvitae, cedarleaf (oil).

GENERAL DESCRIPTION: A graceful pyramid-shaped coniferous tree up to 20 metres high with scale-like leaves and broadly-winged seeds, sometimes planted as hedging. The tree must be at least fifteen years old before it is ready to be used for essential oil production.

DISTRIBUTION: Native to north eastern North America; cultivated in France. The oil is produced mainly in Canada and the USA, similar oils are also produced in the East – see here.

OTHER SPECIES: There are many forms and cultivated varieties of this tree: the western red cedar or Washington cedar (T. plicata); the Chinese or Japanese cedar (T. orientalis or Biota orientalis); the North African variety (T. articulata) which yields a resin known as ‘sanderac’.

The hiba tree (Thujopsis dolobrata) is used to produce hiba wood oil and hiba leaf oil in Japan. Hiba wood oil, according to available data, is non-toxic, non-irritant and non-sensitizing (unlike the other thuja oils), and has excellent resistance to fungi and bacteria due to the ketonic substances found in the oil. It is used extensively in Japan as an industrial perfume.

HERBAL/FOLK TRADITION: Used as an incense by ancient civilizations for ritual purposes. A decoction of leaves has been used for coughs, fever, intestinal parasites, cystitis and venereal diseases. The ointment has been used for rheumatism, gout, warts, verrucae, psoriasis and other ailments.

The twigs are current in the British Herbal Pharmacopoeia, used specifically for bronchitis with cardiac weakness, and warts.

ACTIONS: Antirheumatic, astringent, diuretic, emmenagogue, expectorant, insect repellent, rubefacient, stimulant (nerve, uterus and heart muscles), tonic, vermifuge.

EXTRACTION: Essential oil by steam distillation from the fresh leaves, twigs and bark.

CHARACTERISTICS: A colourless to pale yellowy-green liquid with a sharp, fresh, camphoraceous odour.

PRINCIPAL CONSTITUENTS: Thujone (approx. 60 per cent), fenchone, camphor, sabinene and pinene, among others.

SAFETY DATA: Oral toxin – poisonous due to high thujone content. Abortifacient.

AROMATHERAPY/HOME: USE None. ‘Should not be used in aromatherapy either internally or externally.’.

OTHER USES: Used in pharmaceutical products such as disinfectants and sprays; also as a counter-irritant in analgesic ointments and liniments. A fragrance component in some toiletries and perfumes. Employed as a flavour ingredient in most major food categories (provided that the finished food is recognized thujone-free).

Health Source: The Encyclopedia of Essential Oils
Author: Julia Lawless

Thuja Orientalis

Linn.

Synonym: Biota orientalis Endl.

Family: Cupressaceae.

Habitat: Native to China; planted all over India in gardens.

English: Oriental Arbor-Vitae.

Folk: Morepankhi.

Action: Leaves—diuretic, insectici- dal antipyretic.

The leaves contain rhodoxanthin, amentoflavone, hinokiflavone, querce- tin, myricetin, carotene (20.8 mg/100 g dry basis), xanthophyll and ascorbic acid (68 mg/100 g). Essential oil, obtained from twigs (0.32) and berries (0.25%), contains alpha-thujene, (+)- sabinene, (+)-camphene, cedrol, ce- drenol and alpha-and beta-pinenes as major constituents.

American Arbor-Vitae and White Cedar has been equated with T. occidentals and is used as Thuja.

It was introduced into India from North America, and grows as a Christmas tree in the plains of India.

Leaves—aninfusionisusedasa uterine stimulant, emmenagogue and diuretic. Boiled in lard, are applied externally for rheumatism. Bark—astringent, emmenagogue, diuretic. Oil— poisonous, disinfectant, insecticidal. Seed and fruit— antibacterial; inhibited the growth of Gram-positive microorganisms.

The leaves yields a volatile oil, containing thujone as major component, with iso-thujone, borneol, bornyl acetate, l-fenchone, limonene, sabinene, camphor, l-alpha-thujene; flavonoids, mucilage, tannins.

The heartwood yields a non-toxic antibiotic substance. It gave sesquiter- pene alcohols—occidentalol and oc- cidol; also alpha-beta-and gamma- eudesmol.

Thuja is used in homoeopathy for tissue degeneration and tumours, warts and fungoid growths, both internally and externally.... thuja orientalis



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