Page 233 - PG 101-Course notes مذكرة النظري 24-25 with spec

Medicinal plants (PG 101) Level 1 Clinical Pharmacy-PharmD

excreta cause rejection of many drugs. This may be eliminated largely by packing and

storing the drugs in glass, plastic, or metal containers. Rodenticides such as Alpha-

naphthyl thiourea (ANTU) may be used.

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Introduction to pharmacognosy (Summary)

❖ Natural drug origin (Biological, Geographical and commercial)

❖ Plants are wild or cultivated (Terms: Indigenous and naturalized)

❖ Collection of wild plants (Disadvantages)

❖ Cultivation of crude drug Advantages and disadvantages).
❖ Collection (Proper time and stage).

❖ Drying (Causes of removal of moisture, Methods of drying)

❖ Effect of drying on odor, taste, color and active constituents.

❖ Storage (Physicochemical and biological factors) How to make stabilization of crude drug
against moisture????????? How to control insects????

❖ Adulteration types (Sophistication, Substitution and admixture)
❖ Methods of evaluation of crude drugs

❖ Chemistry of crude drugs:

❖ By products of metabolism

• Crystals (Ca-OX ,Ca carbonate and silica)
• Mucilage (Types and reagents)
• Volatile oils (Fixed oils)
• Tannins (Types and reagent)
• Alkaloids

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