Question:
Glycosidic linkage between C\(_1\) of \(\alpha\)-glucose and C\(_2\) of \(\beta\)-fructose is found in:
Glycosidic linkage between C\(_1\) of \(\alpha\)-glucose and C\(_2\) of \(\beta\)-fructose is found in:
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Sucrose is a non-reducing sugar as both anomeric carbons of glucose and fructose are involved in glycosidic linkage.
Updated On: Jan 13, 2026
- maltose
- sucrose
- lactose
- amylose
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The Correct Option is B
Approach Solution - 1
Step 1: Understanding Glycosidic Linkage
Glycosidic bonds are covalent bonds formed between sugar molecules through dehydration synthesis.
The type of glycosidic bond determines the digestibility and function of the disaccharide.
Step 2: Comparison of Linkages
Maltose consists of two glucose units linked by a C\(_1\)-C\(_4\) \(\alpha\)-glycosidic bond.
Sucrose has a glycosidic bond between C\(_1\) of \(\alpha\)-glucose and C\(_2\) of \(\beta\)-fructose.
Lactose is made up of galactose and glucose with a C\(_1\)-C\(_4\) glycosidic bond.
Amylose consists of glucose monomers linked by C\(_1\)-C\(_4\) \(\alpha\)-glycosidic bonds.
Final Answer: Since sucrose contains an \(\alpha\)-glucose and a \(\beta\)-fructose linked at C\(_1\)-C\(_2\), the correct answer is (B).
Glycosidic bonds are covalent bonds formed between sugar molecules through dehydration synthesis.
The type of glycosidic bond determines the digestibility and function of the disaccharide.
Step 2: Comparison of Linkages
Maltose consists of two glucose units linked by a C\(_1\)-C\(_4\) \(\alpha\)-glycosidic bond.
Sucrose has a glycosidic bond between C\(_1\) of \(\alpha\)-glucose and C\(_2\) of \(\beta\)-fructose.
Lactose is made up of galactose and glucose with a C\(_1\)-C\(_4\) glycosidic bond.
Amylose consists of glucose monomers linked by C\(_1\)-C\(_4\) \(\alpha\)-glycosidic bonds.
Final Answer: Since sucrose contains an \(\alpha\)-glucose and a \(\beta\)-fructose linked at C\(_1\)-C\(_2\), the correct answer is (B).
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Approach Solution -2
Sucrose contains the glycosidic linkage between C1 of α-glucose and C2 of β-fructose.
Sucrose is a disaccharide formed by the condensation of one molecule of α-glucose and one molecule of β-fructose. The unique glycosidic bond in sucrose is an α(1→2)β linkage, meaning the anomeric carbon (C1) of the α-glucose unit is linked to the anomeric carbon (C2) of the β-fructose unit.
This bond formation locks both the glucose and fructose units in their respective ring forms and prevents them from mutarotation, which is why sucrose is a non-reducing sugar. The α(1→2)β glycosidic bond is crucial in defining the chemical and physical properties of sucrose, making it an important sugar in biological systems and the food industry.
Sucrose is a disaccharide formed by the condensation of one molecule of α-glucose and one molecule of β-fructose. The unique glycosidic bond in sucrose is an α(1→2)β linkage, meaning the anomeric carbon (C1) of the α-glucose unit is linked to the anomeric carbon (C2) of the β-fructose unit.
This bond formation locks both the glucose and fructose units in their respective ring forms and prevents them from mutarotation, which is why sucrose is a non-reducing sugar. The α(1→2)β glycosidic bond is crucial in defining the chemical and physical properties of sucrose, making it an important sugar in biological systems and the food industry.
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