  The axial vector coupling constants of the $\beta$ decay processes of neutron
and hyperon are calculated in SU(3) chiral colour dielectric model (CCDM).
Using these axial coupling constants of neutron and hyperon, in CCDM we
calculate the integrals of the spin dependent structure functions for proton
and neutron. Our result is similar to the results obtained by MIT bag and
Cloudy bag models.
