Page 18 - Phytochemistry -1 (PG404) / Clinical Pharmacy 2nd level students ( 2019 )

Clinical pharmacy PharmD program Third level Phytochemistry-1 (PG-504)

(5) Sucrose = Cane sugar = Beet sugar = Saccharose = sugar

1. Molisch

2. Fehling test before hydrolysis

3. Fehling test after hydrolysis: Boil 3ml sugar sol. + 1 ml dil HCl,
neutralize with sod. Carbonate powder till no eff., then boil the resulting

sol. with equal vol. of Fehling A & B solutions, a red ppt is produced.

4. Resorcinol test

5. Cobalt nitrate test

6. Arsenic acid test: A red color is produced by adding drops of arsenic

acid to a sucrose solution.

(6) Lactose = Milk sugar

1. Molisch

2. Fehling

3. Osazone (cluster or tufts of needles)

(7) Maltose = Malt sugar

1. Molisch

2. Fehling

3. Osazone (rosettes of plates)

Honey

It consists of dextrose, fructose, mannitol, sucrose/ in water.

Honey may be adulterated with:

1. Excessive sucrose or liquid glucose.

2. Admixture of commercial glucose & inverted sugar.

3. Too much water

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