2.2.5 Spectroscopic Analysis
Fourier transform infrared (FTIR) spectroscopy
The FTIR spectra of sericin samples were recorded
on BX FTIR spectrophotometer (PerkinElmer, US) in
order to determine the functional groups present in sericin. KBr pellet method was used and the spectra
were recorded in the region of 4000 – 400 cm-1.