Rancimat Test
Rancimat test carried out according to Laubli & Bruttel by the little
modifications. During the lipid oxidation process are formed volatile
acids that the rancimat test is based on the conductometric measurement
of volatile acids. Oil samples (2.5 g) was oxidized in a reaction vessel
at 140°C and air flow (20 L/h). The end of the induction period (IP) was
determined by the sudden increase of water conductivity, due to the
dissociation of volatile carboxylic acids (Laubli & Bruttel., 1986).