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On the filterate carry out the following tests:
fehling’s add few drops of BaCl2 a white ppt is
formed.
On the powder:
- Dissolve powder by heating in water, Cool. To 1 ml of the mucilage carefully add
water so as to form two separate layers. Add 0.1 ml of iodine. A dark brownishviolet
color appears at the interface. Mix. The liquid becomes pale yellow.
-A pink color with ruthenium red.
-A deep yellow color with KOH.

Uses:
1.Suspending,thickening and emulsifying agent in pharmacy.
2.Bulk laxative.
3. Nutrient media in bacteriological cultures.
4. Agarose is used for Electrophoresis chromatography.

Gelatin

Purified protein obtained either by partial acid hydrolysis (type A), partial alkaline
hydrolysis (type B) or enzymatic hydrolysis of collagen from animals (including fish
and poultry); it may also be a mixture of different types.

Shape: solid, usually occurring as translucent sheets, shreds, granules or powder.
Color: Faintly yellow or light yellowish-brown.

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