Fig 12. Variation contribution (%) from changes in N, Pi and N-Pi interaction on the chitin/chitosan region (3457–3417 cm^-1, 3293–3251 cm^-1, 3133–3081 cm^-1, 1639–1623 cm^-1, 1392–1346 cm^-1, 962–941 cm^-1) of FTIR HTS spectra.

Variation contributions due to N and Pi alone are presented in the first two rows (Var N and Var P), whereas contribution from N-Pi interaction (Int) is presented in the last row (Var Int).