... The solution color becomes blue, and is unstable when PH is above 6. The color of solution ... food additives)Grape Skin Extract can be widely Used in fruit-flavoured beverages,beverages of fruit and ... solid beverage, candy,cakes,jelly,jam, imitation wine.When use Grape Skin Extract, dissolve the color a small ... 0/kg, for jam is 1.5/kg, when used in solid beverages, the usage quantity can be increased ...