“…Characteristic bands of corn oil were observed at 3011, 2923, 2856, 1742, 1464, 1162, and 723 cm -1 resulting from C-H stretching of CH=CH, C-H asymmetric stretching of CH 2 , C-H symmetric stretching of CH 2 , C=O stretching of ester (glyceride), CH 2 scissoring, O-C-C stretching, and CH 2 rocking, respectively 11) CDFAs spectra show new bands at 3342, 1623 and 1045 cm -1 attributed to N-H stretching, C=O stretching and C-N stretching of amide, respectively. The disappearance of peaks at 1742 and 1162 cm -1 and appearance of peaks at 3342, 1623 and 1045 cm -1 indicate that fatty acyl urea have been formed 10) .…”