Page 18 - phytochemistry I - PharmD Clinical

 Lactose is hydrolyzed readily by acid solutions or emulsin to give one
molecule of each of D-glucose and B-D-galactose.

 It is soluble in water and reduces Fehling's solution.
Uses:

1- Diluent in tablets and powders.
2- Nutrient in infants formulas, being more easily digested than sucrose.

Maltose (Malt sugar)

Maltose

4-O-(α-D-glucopyranosyl)-α-D-glucopyranose
Occurrence:
 Maltose is rarely found as such in nature (malt extract).
 It occurs only as a constituent of polysaccharides particularly of starch and

dextrins from which it is liberated as an end product of the action of amylase.
 It is a reducing disaccharide that is fermentable and is hydrolyzed by acids

or the enzyme maltase to yield 2 molecules of glucose.

Uses:
 Nutrient for adults and infants.

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