Page 225 - PG 101-Course notes مذكرة النظري 24-25 with spec

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

Treatment of drugs before drying

Some drugs as underground organs need cleaning and garbling. The cleaning

process includes:

1- The removal of soil particles from the drugs either by shaking, brushing, or

washing under steam of water.

2- In some cases small rootlets are cut off as in rhubarb and liquorice, and they are

peeled.

3- Some drugs such as ginger and cinnamon are decorticated to acquire a good

appearance or to remove tissues containing undesirable substances.

4- Garbling is the process of the removal of foreign matters such as sand, dirt, or

other parts of the plants from the drug. This can be achieved either by hand or by a

special machine. Metallic particles can be removed by passing the drug over a big

magnet.

✓ The complete removal of foreign material is not practical, and for this reason

the pharmacopoeias state certain limits of them.

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