... 3.Perfect solubility 4.natural 5.deodorized,less odour. Purple Sweet Potato Color(Deodorized)Purple Sweet Potato Color, a pure natural and water soluble food color ... checking, washing, slicing, extracting, filtrating, purifying, concentrating, sterilizing(purple sweet potato color liquid), spraying & drying(purple sweet potato color powder). The main ingredient is cyanidin acyl ...