This study aimed to predict the functional group changes in the natural form to hydrogenated form of vegetable oils
using FTIR spectroscopic method. The edible oil, which are palm oil, groundnut oil, sesame oil, and vanaspathi(hydrogenated
vegetable oil) were observed with relative intensities of the peak and characteristic area percentage of peaks. It is found that
trans fatty acids at the peak of 966.34cm-1
in the region of 980-960cm-1
strong C=C bending vibration due to the presence of
alkene disubstituted (trans) observed in the hydrogenated form of vegetable oil.