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Lactose is composed of: |
β-D galactose and β-D glucose α-D glucose and β-D galactose α-D glucose and β-D fructose β-D glucose and α-D galactose |
β-D galactose and β-D glucose |
Lactose: It is more commonly known as milk sugar since this disaccharide is found in milk. It is composed of β-D-galactose and β-D-glucose. The linkage is between C1 of galactose and C4 of glucose. Free aldehyde group may be produced at C-1 of glucose unit, hence it is also a reducing sugar.
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