... 4.natural 5.deodorized,less odour. Purple Sweet Potato Color(Deodorized)Purple Sweet Potato Color, a pure natural and water ... extracting, filtrating, purifying, concentrating, sterilizing(purple sweet potato color liquid), spraying & drying(purple sweet potato color powder). The main ingredient is ... and dosing for kinds of cakes. 3. Used for purple potato chips, , biscuit and other products. If added ...