1-10kg is packed with double plastic container inside and a Aluminum Foil Bag outside.
11-25kg is packed with double plastic container inside and a carton outside.
>25kg is packed with double plastic container inside and a fiber can outside.
Grape skin extract is a natural coloring agent extracted from the skins of Vitis Vinifera grapes (wine grapes), Grape skin extract anthocyanin be longs to flavonoids group of colorants responsible for the red, purple, blue, violet and orange color of many fruits, vegetables and flowers.
[Product name]Grape Skin Extract [Product source] extracted from the skins of Vitis Vinifera grapes [Specifications] 45%OPC,30%polyphenols [Product appearance]powder is purplish red, liquid is brown purple [Grade]Pharmaceutical & Food [Application]beverages, frozen drinks, health products
Soluble in water and ethanol, insoluble in ether, chloroform and other organic solvents, lead acetate reagent cause precipitation, can be activated carbon adsorption.
In natural light, the color will change with different PH: In acidic conditions coloring better in purple red, pale slowly; In weak acidic or alkaline conditions, the color will fade easily after a long time irradiation.
Grape skin pigment show different colors under different PH: purple red in a strong acid solvent, blue in alkaline solution, suitable for acidic food additives.
Heat resistance of grape skin pigments is very poor, with increasing growth temperature and time, color change quickly.
1. Ideal alternative to synthetic pigment 2. Natural antioxidant 3. Natural preservatives 4. Beauty &skin care role 5. Improve visual function 6. Radiation function