Carotenoid (lyco-red) extracted from tomato peel was tested as antioxidant by using the Rancimat method as described by (Laubli and Bruttel 1986). Where 50, 100, 150, and 200 ppm
of the carotenoids (lyco-red) extracted from tomato peel were mixed with 25 g of sunflower oil in a flask, against a sample 25 g of sunflower oil mixed with 200 ppm of synthetic BHT
in a flask. On the other hand, the control was sunflower oil without any additives.