No decolorization. Amaranth red light, heat resistance, soluble in water, concentrated apple juice plus amaranth red can not change the chemical properties of amaranth red, 105 degrees below high temperature will not decolorize. Amaranth red, also known as edible red color 2, edible red 9, acid red, poplar red, cocklebur red, blue light acid red, for water-soluble azo coloring agent.