Page 80 - Org 3 theoritical book 2024-25

Clinical Pharmacy PharmD - 2024/2025 Level 2 Pharmaceutical Organic Chemistry-3 (PC 305)
2. Unlike sucrose, maltose is a reducing sugar; it gives positive tests with

Fehling’s, Benedict’s, and Tollens’ solutions. Maltose also reacts with
phenylhydrazine to form a monophenylosazone (i.e., it incorporates two

a) Lactose

Lactose is a disaccharide present in the milk of humans, cows, and almost all other

mammals. Lactose is a reducing sugar that hydrolyzes to yield D-glucose and D-

galactose; the glycosidic linkage is β.

Polysaccharides

Polysaccharides, also known as glycans, consist of monosaccharides joined by

glycosidic linkages.

Homopolysaccharides: Polysaccharides that are polymers of a single

monosaccharide

Heteropolysaccharides: those made up of more than one type of monosaccharide.

Example: starch, glycogen, and cellulose.