Sucrose is also known as invert sugar.
It is derived from sugarcane and sugar beet naturally. Aqueous solution of sucrose is dextrorotatory and rotates plane polarized light entering the solution 66.5° to the right. When sucrose is hydrolysed with dilute acids or invertase enzyme, it gives two products in equimolar concentration, dextrorotatory D-(+)-glucose and laevorotatory D-(-)-fructose. The laevorotation of fructose (–92.4°) is more than dextrorotation of glucose (+ 52.5°), the resulting equimolar mixture of the products is laevorotatory. Thus, hydrolysis of sucrose brings about a change in the sign of rotation, from dextro (+) to laevo (–) and thus the product is named as invert sugar.
Rate this question :