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Question

Which of the glycosidic linkage galactose and glucose is present in lactose?


  1. C-1 of glucose and C-6 of galactose

  2. C-1 of galactose and C-4 of glucose

  3. C-1 of glucose and C-4 of galactose

  4. C-1 of galactose and C-6 of glucose

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Solution

The correct option is B

C-1 of galactose and C-4 of glucose


The solution is option B C-1 of galactose and C-4 of glucose

Lactose (C12H22O11) is comprised of a galactose molecule coupled to a glucose molecule by a 1,4-glycosidic bond. It's a form of reducing sugar found in milk. Lactose is a naturally present sugar derived from milk and dairy goods such as cheese and ice cream. Lactose malabsorption is indeed the cause of lactose intolerance's digestive symptoms. Lactose malabsorption is when your small intestine is unable to digest or break down all of the lactose you intake.

Options A, C, and D linkage cannot able to present in lactose (C12H22O11)

Hence Option B is correct.


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