Question

Inulin is a polymer of:

• A. (a) Glucose
• B. (b) Fructose
• C. (c) Galactose
• D. (d) Arabinose

Answer 1

The correct option is B

(b) Fructose

Explanation for correct option:

Option (B) Fructose

• Fructose, often known as fruit sugar, is a ketonic simple sugar present in many plants.
• It is frequently linked to glucose to produce the disaccharide sucrose.
• Inulin is a fructose polymer found in many plants.
• It is found in the roots and rhizomes of plants. Inulinase is produced by hydrolysis of inulin.

Explanation for incorrect options:

Option (A) Glucose:

Glucose has a chemical formula ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_6$ and is a simple sugar.

Option (C) Galactose:

• The most frequent monosaccharide is glucose, but galactose is more typically found in the disaccharide, lactose, or milk sugar.
• It is found in peas as a monosaccharide.
• Galactose is a glucose isomer.
• They simply differ in the arrangement of their atoms.
• Glucose and galactose are stereoisomers.

Option (D) Arabinose:

Arabinose is an aldopentose, which is a monosaccharide with five carbon atoms and an aldehyde ($\mathrm{CHO}$) functional group.

Thus, option (B) is correct. Inulin is a polymer of Fructose.