In disaccharides, if the reducing groups of monosaccharides, i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars. Which of the following disaccharide is a non-reducing sugar?

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Solution

Answer: (b)

This structure represents sucrose in which $α - D$ glucose and $β - D$ fructose are attached to each other by $C_{1} - C_{2}$ glycosidic linkage.
Since reducing groups of glucose and fructose are involved in the glycosidic bond formation, this is considered as non-reducing sugar.

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In disaccharides, if the reducing groups of monosaccharides, i.e., aldehydic or ketonic groups are bonded, these are non-reducing sugars. Which of the following disaccharide is a non-reducing sugar?

Answer: (b) This structure represents sucrose in which α−D glucose and β−D fructose are attached to each other by C1−C2 glycosidic linkage. Since reducing groups of glucose and fructose are involved in the glycosidic bond formation, this is considered as non-reducing sugar.

Answer: (b)

This structure represents sucrose in which $α - D$ glucose and $β - D$ fructose are attached to each other by $C_{1} - C_{2}$ glycosidic linkage.
Since reducing groups of glucose and fructose are involved in the glycosidic bond formation, this is considered as non-reducing sugar.