write the preparation of glucose from
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Answer:
Preparation of glucose.
Glucose is produced commercially by the hydrolysis of starch with dilute hydrochloric acid at high temperature under pressure.
An aqueous suspension of starch obtained from corn is acidified with hydrochloric acid, It is then heated with high-pressure steam in an autoclave. When the hydrolysis is complete, the liquid is neutralized with sodium carbonate to a pH of 4-5. The resulting solution is concentrated under reduced pressure to get the crystals of glucose.
Explanation:
Glucose is the most common monosaccharide. It is known as Dextrose because it occurs in nature principally as the optically active dextrorotatory isomer. Glucose is found in most sweet fruits, especially grapes (20-30%), and honey. It is an essential constituent of human blood. The blood normally contains 65 to 110 mg (0.06 to 0.1%) of glucose per 100 ml. in diabetic persons, the level may be much higher. In the combined form glucose occurs in abundance in cane sugar and polysaccharides such as starch and cellulose.