Which from following carbohydrates produces glucose, galactose and fructose on hydrolysis?

Which from following carbohydrates produces glucose, galactose and fructose on hydrolysis?
  1. Maltose
  2. Raffinose
  3. Cellulose
  4. Lactose

Solution

Raffinose hydrolyzes to yield glucose, galactose, and fructose. As a trisaccharide, its hydrolysis reaction is $\text{Raffinose} + 2\text{H}_2\text{O} \rightarrow \text{Glucose} + \text{Galactose} + \text{Fructose}$.

Maltose gives only glucose: $\text{Maltose} + \text{H}_2\text{O} \rightarrow 2\text{Glucose}$. Cellulose produces glucose monomers: $(\text{C}_6\text{H}_{10}\text{O}_5)_n + n\text{H}_2\text{O} \rightarrow n\text{Glucose}$. Lactose yields glucose and galactose: $\text{Lactose} + \text{H}_2\text{O} \rightarrow \text{Glucose} + \text{Galactose}$.

Asked in: MHT CET 2025 (05 May Shift 2)

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