Page 19 - phytochemistry I - PharmD Clinical

B- Non- Reducing Disaccharides

Sucrose (Saccharum. sugar, cane sugar, beet sugar)

2-O-(α-D-glucopyranosyl ) α -D-fructofuranose
Occurrence:
 Sugar cane (Saccharum officinarum L.; Graminae).
 Sugar beet (Beta vulgaris L.; Chenopodiaceae).
Properties:
 It does not reduce Fehling's solution.
 Readily hydrolyzed (even in the cold) by acid solution to give one molecule

of each of D-glucose and D-fructose (invert sugar).
 It is also hydrolyzed by the enzyme invertase.
Uses:
1- Preparation of syrups.
2- Diluent and sweetening agent in pharmaceutic products e.g. lozenges and

powdered extracts.
3- In 66% w/v in an aqueous solution, it is used as bacteriostatic and preservative.

Some Synthetic Disaccharide Derivatives

1- Sucralfate

 Sucralfate is the basic aluminum salt of the fully sulfated derivative of
sucrose.

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