Page 348 - Pharmacognosy 2 PG303

Pharmacognosy-2 (PG303) Level 2 Clinical Pharmacy-Pharm D

Unorganized drugs Question

1- Complete the missing spaces in the following sentences:

a) The yellow color of curcuma is due to ……………… during preparation.
b) Gelatin is ……………. in nature and gives ……………. with picric acid.
c) Freshly fractured surface of asafetida gives…………. color with ……………

after washing with water.
d) The principal constituent of all varieties of Aloes is …………………

e) The freshly cut surface of the dried rhizome of Rheum palmatum shows
……………..fluorescence in ultra-violet light.

f) Asafetida has a strong …………… odor due to its ………………content.
g) Myrrh is used as ………………….
h) Aloe is …………..in nature, it is used topically for………………………..

2- Give a chemical test for the following un-organized drugs:

Drug Detailed chemical test

• Gum Arabic

• Gelatin

• Agar-Agar

• Opium

• Gum Tragacanth

• Colophony

• Asafetida

• Myrrh

3- Give only one example from un-organized drugs

Nature of drug Example

• Oleo-gum resin

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