Friday 4 July 2014

CARBOHYDRATES :: PART 3

 DISACCHARIDES
-          These are formed when two monomers are attached by glycosidic bond.

-          Glycosidic bond is formed by removal of a water molecule from two monosaccharides.
-          Example of disaccharides: -
o   Sucrose (glucose and fructose as its monomer unit).
o    Lactose (glucose and galactose as its monomer unit).
o   Maltose (glucose and glucose as its monomer unit).



REDUCING SUGARS
-          Carbohydrates that have a free aldehyde at the C1 or free ketone at C2 are called reducing sugars.
-          Eg: - glucose, fructose, lactose, maltose.

NON-REDUCING SUGARS
-          These don’t have free aldehyde or ketone groups.

-          Eg: - sucrose and glycogen.


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