ZEDOARY OIL

Botanical Name Curcum Zedoaria Rosc.
Synonyms -
Family Zlnalberaceae
Local Name Kadtur
English Name Lecloary

Plant Description

Zedoary is an erect herb, often reaching a height of 50 cm with avoid rootstock. Leaves are oblong, acuminate, 30-60cm long, narrowed to the base, petiole longer than the leaf blade. Flowers are pale yellow. It is cultivated throughout Nepal within the altitude of 1000 m.

Extraction

Zedoary oil is obtained by steam distillation of the rhizomes of Curcuma zedoaria.

Uses

The oil can be used as analgesic, anti-inflammatory, digestive, sedative and stomachic. Zedoary oil is used as gastro-intestinal stimulant in flatulent colic and it prevents the stress ulceration. The oil is used as a condiment, as flavouring for liqueurs and in perfumery.

Organoleptic Properties

Appearance: Viscous fluid
Colour: Golden Yellow
Aroma: Warm-Spicy, woody and camphoraceous cineolic odour.

Active Constituents

1,8, cineol, -eudesmol, major constituents of Zedoary oil. Other components are curculone, curcumadiol, curcumanolide A and B, curcumenol, curcucumenone, curcumol, curcumin, curdione, dehydrocurdione, 0-borneol, 0-camphene, 0-camphor. The root also contains numerous other bitter substances,tannins and flavonoids.

Physico-Chemical Properties

Specific gravity 0.899 - 0.9313 at 27° C?>
Optical rotation [-] 0.75° to 8° at 27° C?>
Refractive index 1.39 to 1.482 at 27° C?>
Acid number 1. 162 to 3.74
Ester number 8.23 to 37.28
Ester number 60 to 75 (after acetylation)
Solubility Soluble in 80%- 90% alcohol