Spectroscopic investigation of the interaction of p-benzoquinone with casein in the solid state.

The reaction between p-benzoquinone (PBQ) and casein (protein) in the solid state was studied. After reaction with protein, the FT-IR spectra showed a new band at 1215 cm(-1), with an intense sign attributed for casein/PBQ product. An optimum amount of PBQ for determination of the product when mixed with casein was 100mg and a reaction time of 30 min.