IDENTIFICATION TESTS FOR RESINOUS DRUGS Chemical test for Asafoetida

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IDENTIFICATION TESTS FOR RESINOUS DRUGS
Chemical test for Asafoetida

Objective: 
To perform the chemical test for ASAFOETIDA

Biological source:
It is the oleo resin obtained from roots and rhizomes of Ferula foetida.
Fam- umbelliferae

Physical characteristics:
Appearance           - Crystalline
Colour                   -Yellowish brown
Odour                    - Intense penetrating and alliaceous odour
Shape                    - Tear and masses
Taste                      - Bitter acrid and alliaceous taste
Solubility               - Partially soluble in alcohol

Sr.
No.
Test
Observation
Inference
1.
Triturate with water
Yellowish orange 
emulsion
Asafoetida present
2.
Treat fractured surface with with 50% nitric acid
Green colour.
Asafoetida present
3.
Treat fractured surface with conc.sulphuric acid
Red or reddish brown colour 
Asafoetida present
4.
Combined Umbelliferone Test: Triturate 0.5 g of drug + sand + 5ml Hydrochloric acid, add 2ml water, filter, Filtrate + equal volume of ammonia
Blue fluorescence
( umbelliferone)
Asafoetida present
5.
Alcoholic extract + phloroglucinol and conc HCL
Pink colour.
Asafoetida present
6.
On burning
Yellow flame
Asafoetida present


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