Formation of a disaccharide:

a) Two molecule of glucose will polymerise to form maltose

b) The condensation reaction will take place between C1 of the first glucose and C4 of the second glucose.

c) A condensation reaction takes place between the glucose 1 (-OH on C1) and Glucose (-H on C4).

d) The bond formed is a covalent bond between C1 -O-C4 , called a 1, 4 glycosidic bond.

e) The disaccharide molecule formed is called Maltose which like glucose is a reducing sugar.

f) Hydrolysis; The diagram can be reversed so that the disaccharide can be split into two glucose monosaccharides.

g) Hydrolysis is the type of reaction catalysed by the digestive enzymes.

This is the same diagram as above except using the abbreviated format of molecular diagrams