rom an ancient time people have been coloring food, drug and cosmetic products. Like, our ancestor used color such as saffron to color certain food. Also many behavioral studies show that the human appetite and choice of food are influence by colors. Imagine food in your dish without color can terrify oneself, thus people all over world are using food color to give a pleasant look to their foods.
A Primary Food color is water-soluble, and exhibits coloring power when it is dissolved.