Product Description:

It is made of grape skin or grape juice residue as the main raw material through extraction, filtration, refining, concentration, sterilization, spray drying and other processes.

Physical and chemical properties:

Solubility: soluble in water, ethanol, propylene glycol, insoluble in oil and fat.

Color tone characteristics: The color tone changes with pH value, ranging from red to purple red in acidic conditions and dark blue in alkaline conditions; Under acidic conditions, it has good light and heat resistance stability.