Purple Sweet Potato Color is a pure natural and water soluble food color which is extracted from purple root tuber of edible purple sweet potato (Impomoea batatas ) planted locally. The process is 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 glucoside & peonidin acyl glucoside. Purple sweet potato color powder is red to purple red, liquid is brown purple, both has the characteristic odor of sweet potato. It can be dissolved in water & alcohol, propylene glycol solution easily, but not in oil. The color of water solution changes when PH is different. When PH is between2-6, the color is red or purple red .The solution color becomes blue, and is unstable when PH is above 6. The color of solution can’t fade under light for a long time, and also has good resistance to high temperature in an acidic medium.
Purple Sweet Potato Color
Purple-red to Dark Purple Fine Powder
100% water soluble
Beverages, Drinks, Candy, Ice cream, Coating of pill, cosmetics etc.