Racemization is two Molecular formula Molecules that are identical but mirror in structure, optical rotation On the contrary, optical activity is eliminated. Racemization means that a molecule has no optical activity.
Raceme: There are asymmetric atoms in the molecule, but because of the Symmetry factor And the optically inactive compound formed. For example, although there are two asymmetric carbon atoms C * in the internal racemic tartaric acid molecule, due to their symmetry, the right rotation of one half of the molecule is offset internally by the left rotation of the other half, so it is an inactive compound. 
