Wednesday, 2 July 2014

CARBOHYDRATES:: PART 2

MONOSACCHARIDE

-          Monosaccharides are defined as polyhydroxy       aldehydes or ketones.

-          Monosaccharides can be further divided into groups upon the number of carbon atoms they have.

o   Triose (3 carbon atoms) eg: - glycerose.

o   Tetrose (4 carbon atoms) eg: - erythrose.

o   Pentose (5 carbon atoms) eg: - ribulose.

o   Hexose (6 carbon atoms) eg: - glucose and fructose.

o   Heptose (7 carbon atoms) eg: - glucoheptose.

-          A carbon atom to which four different groups are attached is called a chiral carbon


-          Because of this chiral carbon monosaccharides show isomerism.

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