The conformational change of α‐keratose in the polyelectrolyte complex (PEC) formation with chitosan was investigated by means of differential scanning calorimetry and infrared spectroscopy. The change of the secondary structure of α‐keratose in the reaction mixture was estimated quantitatively with circular dichroic spectra by the curve fitting method. The α‐helix structure of 30% and above of α‐keratose was found to be destructed and transformed into random structures at a mixing ratio of maximum PEC formation.
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Park et al. (1996) studied this question.
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