2.7. Oxidative Stability Using the Rancimat Method

The oxidative stability of the oils was determined using a Metrohm Rancimat analyzer (892 Professional Rancimat, Metrohm Instruments, Herisau, Switzerland). Reaction vessels that contained approximately 2.5 g of oil were placed in a heating block at 110 °C and a temperature correction factor of 1.6 °C was used for each sample. Purified air was then bubbled at 20 L/h and a measuring vessel that contained 80 mL of deionized water was used to collect the short-chain volatile organic acids that were present in the effluent air [39,40]. Water conductivity and induction time (h) were automatically recorded using StabNet software, version 1.1.