LIQUID GLUCOSE

LIQUID GLUCOSE


Synonyms  : Corn syrup, Starch syrup


Source : It is purified concentrated aqueous solution of nutritive saccharides.


Method of Preparation


Liquid glucose is obtained by partial hydrolysis of edible starch or starchy substances by action of Hydrochloric acid. It is purified and concentrated aqueous solution of nutritive saccharides.
The degree of hydrolysis of starch is measured as Dextrose equivalent, which is percent of Dextrose calculated on dry basis.

Description

It is highly viscous transparent liquid yellow coloured non-crystallizing liquid with slight characteristic smell and sweet taste. It is less sweet than sucrose.
The viscosity of liquid glucose depends upon density, temperature and its Dextrose equivalent. It is soluble in water, glycerine and slightly soluble in alcohol.

ldentification


Liquid glucose differs from sucrose in the respect that it readily reduces Fehling's solution producing a red precipitate of Cuprous oxide.


Uses :

1.    Its hygroscopic and non-crystalizing property is very important tool to improve the quality of liquid preparations in pharmaceutical industry.
2.    Liquid glucose should not be used instead of glucose or parenteral purposes.
3.    It is also used as sweetening agent. Its high dextrose equivalent exhibits moderate osmotic pressure and also inhibits microbial spoilage.

4.    Industrially, it is used in jams, jellies, creams, ice creams, tobacco and Confectionery products

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