. It was most likely that the antioxidants present in tomato seed oil provided protection against the reduc- tion of IV.
The AV of tomato seed oil was increased from 0.26 mg KOH/g oil to 0.84 mg KOH/g oil after 50 h of heating (P < 0.05), as shown in Fig. 2d. The increase of AV is caused by hydrolysis of phosphatides and triglycerides in oil into glycerol and free fatty acids