The same patterns were
observed at the boiling point.
In Mustard oil Fig. 2(b) represents
that at boiling point and for one and three times frying
Fig. 2(c and d) there is a peak of double bond’s stretching
which is AC‚O free fatty acids at the region 1705.0 cm1
and the spectra showed overall signal pattern looked similar
with each other.
As the spectral regions undergoes several
changes during oxidation processes at the room temperature
and at different temperatures oils showed some regions of
other deformations and bending at 1460–1462 cm1 of ACAH
bending vibrations of the CH2 and CH3 aliphatic groups and