In sucrose, two mono saccharide units are held together by a glycosidic linkage between

$C_{1}$ of $α$ -glucose and $C_{6}$ of $β - f r u c t o s e$

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$C_{1}$ of $α$ -glucose and $C_{2}$ of $β - f r u c t o s e$

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$C_{1}$ of $α$ -glucose and $C_{6}$ of $β - g l u c o s e$

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$C_{1}$ of $α$ -glucose and $C_{2}$ of $β - f r u c t o s e$

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Solution

The correct option is B
$C_{1}$ of $α$ -glucose and $C_{2}$ of $β - f r u c t o s e$

Sucrose is a disaccharide which contains $α - 1, β - 2 - g l y c o s i d i c$ (head-to-head) linkage. This linkage is formed by OH group on the anomeric carbon of $α - D - g l u c o s e$ and OH group on the anomeric carbon of $β - D - f r u c t o s e$ .

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Similar questions

Match the List-I and List-II:

List I (Saccharides)	List II (Formed by)
(A) Sucrose	(i) $β$ -D glucose $C_{1} - C_{4}$ glycosidic linkage
(B) Lactose	(ii) $α$ -D glucose, $β$ -D fructose $C_{1} - C_{2}$ glycosidic linkage
(C) Cellulose	(iii) $β$ -D glucose, $β$ -D galactose $C_{1} - C_{4}$ glycosidic linkage

C - 1

α -

C - 2

β -

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