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FTIR spectra of: (A) native sCT, (B) chitosan, (C) mannitol, and sCT-CS-NPs spray dried powders of (D) NPs/M = 30/70, (E) NPs/M = 20/80, (F) NPs/M = 10/90 prepared using an inlet temperature of 130°c.
Abbreviations: CS, chitosan; FTIR, Fourier transform infrared; M, mannitol; NPs, nanoparticles; sCT, salmon calcitonin loaded; T, transmittance.
