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sumel ashique

Gambier is the dried aqueous extract of leaves and young twigs of Uncaria gambier, a plant from the Rubiaceae family. It is sourced from several Southeast Asian countries. Macroscopically, gambier has a cuboidal shape, reddish-brown color, and an astringent taste. It contains several chemicals including catechin, catechu tannic acid, catechu red, quercetin, and gambier fluorescein. A chemical test identifies gambier fluorescein by producing a green fluorescent color when reacted with sodium hydroxide and petrolium ether. Gambier is used as an astringent and in industries like leather, fabric dyeing due

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GURUNANAK INSTITUTE OF PHARMACEUTICAL SCIENCE & TECHNOLOGY
PALECATECHU By— Sumelashique-18601914080 Supratim das-18601914082 Sumitsaha-18601914081 B.pharm, 2nd year, sec-B
PALECATECHU Synonyms: Gambier  Biological source: Dried aqueous extract of leaves & young twigs of Uncaria gambier.  Family: Rubiaceae.  Geo.source: India, Bangladesh, Singapore & Indonesia.  Macroscopic character: Shape: Cuboidal Colour: Reddish brown
Macroscopic character: Odour: odourless Taste: Astringent Fracture: Uneven Special features: Brittle in nature, easily soluble in nature.
Preparation procedure: Leaves & twigs are collected & boiled with water. Extract is filtered & cooled. During cooling semi solid pasty mass formed. Placed in different dies.
Chemical Composition: I. Catechin (7-33)% II. Catechu tannic acid & catechu red III. Quercetin. IV. Gambier Fluorescein.
CHEMICAL TEST: ( GAMBIER FLUORESCIN) Alcoholic extract of Gambier Filtered then collect the filtrate To the filtrate add NaOH with shaking Petrolium ether is added & stands for few minutes Green colour fluorescence is observed
USES: I. Used as Astringent. II. Source of tannic acid III. Used in Leather & Fabric industry IV. Used in dyeing industry
REFERENCES…  PHARMACOIGNOSY C.K KOKATE,A.P PUROHIT,S.B GOKHALE 46th EDITION,NIRALI PRAKASHAN DRUGS CONTAINING TANNIN, Page no(9.15-9.16)
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