Biomolecules - Result Question 20
####20. Sucrose in water is dextro-rotatory, $[\alpha] _{D}=+66.4^{\circ}$. When boiled with dilute $HCl$, the solution becomes leavo-rotatory, $[\alpha] _{D}=-20^{\circ}$. In this process, the sucrose molecule breaks into[1996]
(a) L-glucose + D-fructose
(b) L-glucose + L-fructose
(c) D-glucose + D-fructose
(d) D-glucose $+L$-fructose
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Solution:
- (c) The hydrolysis of sucrose by boiling with mineral acid or by enzyme invertase or sucrase produces a mixture of equal molecules of $D(+)$ glucose and D(-) Fructose.
