Question:
Which polysaccharide has \(\alpha\)-glycoside linkage?
Which polysaccharide has \(\alpha\)-glycoside linkage?
Show Hint
Starch components (amylose, amylopectin) have \(\alpha\)-linkages; cellulose has \(\beta\)-linkages.
Updated On: Apr 23, 2026
- Amylose
- Amylopectin
- Cellulose
- All of these
Show Solution
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The Correct Option is A
Solution and Explanation
Step 1: Formula / Definition}
\[ \alpha\text{-glycoside linkage} = \text{axial C1-O bond} \]
Step 2: Calculation / Simplification}
Amylose: \(\alpha\)-1,4 linkages (starch component)
Amylopectin: \(\alpha\)-1,4 and \(\alpha\)-1,6 linkages (branched starch)
Cellulose: \(\beta\)-1,4 linkages
\(\therefore\) Both amylose and amylopectin have \(\alpha\)-linkages. Question asks "which" singular - amylose is the straight-chain \(\alpha\)-polymer.
Step 3: Final Answer
\[ \text{Amylose} \]
\[ \alpha\text{-glycoside linkage} = \text{axial C1-O bond} \]
Step 2: Calculation / Simplification}
Amylose: \(\alpha\)-1,4 linkages (starch component)
Amylopectin: \(\alpha\)-1,4 and \(\alpha\)-1,6 linkages (branched starch)
Cellulose: \(\beta\)-1,4 linkages
\(\therefore\) Both amylose and amylopectin have \(\alpha\)-linkages. Question asks "which" singular - amylose is the straight-chain \(\alpha\)-polymer.
Step 3: Final Answer
\[ \text{Amylose} \]
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