There is a saying that people first eat with their nose, then with their eyes and in the end with their mouth. The aroma and the flavor, the looks and the taste all are equally essential for enhancing the food appeal. Food colors and flavors and flavor enhancers have been used since ancient times. They have been identified and manufactured for commercial use for quite some time.

With the rise in processed food industry, dairy industry and other food industries, the use of food additives like preservatives, emulsifiers, glazing agents etc. are added to food to give it a better flavor and visual appeal and a good texture.