HINGU
Hingu consists of oleo-gum-resin obtained from rhizomes and roots of Ferula foetida Regel., Ferula narthex Bioss,and other species of Ferula (Fam. Umbelliferm), a perennial herb, occurring in Persia and Afghanistan, resin collected after making incisions at the upper part of tap root of more than five year old plants by scrapping in March, April, just before flowering, whole process repeated many times, after one or two days or after a few weeks when it gets hardened.
SYNONYMS
Sanskrit : Ramaha, Sahasravedhi
Assamese : Hin
Bengali : Hing
English : Asfoetida
Gujrati : Hing, Vagharni
Hindi : Hing, Hingda
Kannada : Hing, Ingu
Kashmiri : Eng
Malayalam : Kayam
Marathi : Hing, Hira, Hing
Oriya : Hengu, Hingu
Punjabi : Hing
Tamil : Perungayam
Telugu : Inguva
Urdu : Hitleet, Hing
DESCRIPTION
a) Macroscopic
Rounded, flattened or masses of agglutinated tears, greyish-white to dull yellow, mostly 12-25 mm in diameter, freshly exposed surface, yellowish and translucent or milky white, opaque, slowly becoming pink, red, finally reddish brown, odour, strong, characteristic and persistent, taste, bitter and acrid.
IDENTITY, PURITY AND STRENGTH
Identification
(I) Freshly broken surface when touched with sulphuric acid a bright red or reddishbrown colour is produced, changing to violet when acid washed off with water.
(II) Boil 0.2 g with 2 ml Hydrochloric acid for about 1 minute, cool, dilute with an equal volume of water, and filter into 3 ml of dilute solution of Ammonia, fluorescence is produced.
Absence of colophony resin:-Triturate 1 g with 10 ml of Light Petroleum (b.p. 40o-60o) for 2 minutes, filter into a test tube and add to the filtrate 10 ml of a fresh 0.5 per cent w/v aqueous solution of copper acetate, shake well and allow the liquids to separate, petroleum layer does not show any green colour, indicating absence of colophony resin.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 15 per cent, Appendix 2.2.3.
Acid-insoluble ash Not more than 3 per cent, Appendix 2.2.4.
Alcohol-soluble extractive Not less than 50 per cent, Appendix 2.2.6.
Water-soluble extractive Not less than 50 per cent, Appendix 2.2.7.
ASSAY
Place about 5 g accurately weighed, in a small beaker furnished with a glass rod, and tared add 50 ml of Alcohol (90 per cent), and boil gently. Filter the hot solution through a tared filter paper and boil the residue with further quantities of Alcohol (90 per cent); unitl all soluble matter is removed, using the glass rod to disintegrate the soluble matter. Wash the filter paper with hot alcohol (90 per cent) transfer the paper to the beaker, dry the 100o, and weigh. The- residue weighs not more than 50 per cent of the original sample taken.
CONSTITUENTS – Essential oil, gum and resin.
PROPERTIES AND ACTION
Rasa : Katu
Guna : Tiksna
Virya : Usna
Vipaka : Katu
Karma : Anulomana, Dipana, Hrdya, Krmighna, Pacana, Rucya, Vatakaphaprasamana
IMPORTANT FORMULATIONS – Hingvastaka Curna, Hingvadi Curna, Hinguvacadu Curna
THERAPEUTIC USES – Sularoga, Adhmana, Gulma, Hrdroga, Krmiroga, Udararoga, Agnimandya, Anaha
DOSE – 125-500 mg of the drug.
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