Dipterocarpus turbinatus

Gaertn. f.

Family ► Dipterocarpaceae.

Habitat ► The Andamans and Assam.

English ► Common Gurjun tree, Wood Oil tree.

Dolichandrone falcate Seem. 221

Ayurvedic ► Ajakarna, Chhaagakar-na, Ashwakarna.

Siddha/Tamil ► Enney, Saara.

Action ► Oleo-resin (known as Gurjan Oil or Gurjan Balsam)— stimulant to genitourinary system, diuretic, spasmolytic; used externally on ulcers, ringworm and other cutaneous affections. Bark—a decoction is prescribed rheumatism.

Essential oil from oleo-resin contained humulene, beta-caryophyllene, a bicyclic sesquiterpene hydrocarbon and a sesquiterpene alcohol.

The twig bark contains 9% tannin and 7.3% soluble non-tans.

leaves is applied to sprains. Bark— astringent and anti-inflammatory. Aerial parts—hypoglycaemic.

The plant contains bioflavonoids (vitamin P) which are biologically active in improving blood circulation and strengthening capillaries. Aqueous and alcoholic extracts of the plant exhibited cardioinhibitory and coronory constricting, also spasmolytic, sedative and hypotensive activity.

The leaves and pods gave iso-rham-netin-3-O-rutinoside, quercetin-3-O-galactoside and quercetin-3-O-rutino-side. Resin gave a diterpene carboxylic acid (hautriwaic acid). Flowers gave kaempferol.

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