Principle for Presence of Vanaspati and Rancidity in Ghee
Cheap edible and nonedible oils like argemone oil, white oil, tea seed oil etc. are used as adulterants in more expensive oils like coconut oil, sesame oil etc. which can cause damage to body tissues and other ailments on consumption. Sometimes the oil becomes rancid and are sold as such or mixed with good oils. Use of rancid oil results in destruction of vitamins A and E in foodstuffs. Sometimes, animal body fat is added in ghee or vanaspati as adulterant. Use of relatively cheaper vanaspati in ghee is also quite common, though it does not pose any serious health problem.