Page 286 - Pharmacognosy 2 PG303

Pharmacognosy-2 (PG303)

Jalap Root Rauwolfia Roo

(Radix Jalapae) (Indian Snake Root
‫درنة االجلبة‬
Sarpaganda)
‫جذر الثعبان الهندي‬

Origin Dried tuberous roots of Dried roots and rhizom
Ipomea purga, of Rauwolfia serpenti
family Apocyanaceae
family Convolvulaceae
▪ Known as Mexican

Jalap (Vera Cruz).

Active ▪ 8-12% Glycosidal resin ✓ Alkaloids)1.2-1.4%

constituents ▪ (convolvulin ,jalapin) ➢ the most important
Coloring matter. • reserpine

▪ Mannitol. • rescinnamine

• serpentine

✓ Resin (has a CNS

depressant effect).