Detection of Foreign Vegetable Oil or Fat in Butter Fat by Phytosterol Acetate Test

Abstract

Phytosterol acetate test was applied in the mixtures of butter fat and various edible vegetable oil (or fat), in order to find out the sensitivity of the test.
By use of this test one can detect the presence of more than 2% of corn oil or rice oil, more than 5% of cacao butter, rapeseed oil, sesame oil, cotton seed oil, soybean oil, linseed oil or peanut oil, more than 20% af coconut oil or palm oil and more than 35% of palm kernel oil in mixed butter fat. Phytosterol acetate test was proved to be an excellent method for the detection of adulteration of butter fat by edible vegetable oil or fat. But, as the method is rather troublesome and expensive, it is recommended to couple a simpler method with it as a screening test.