Method for producing grape extract with high ORAC value and grape extract so produced
Grape material is processed to yield a grape extract high in concentrated polyphenols, with ORAC values exceeding at least about 10,000 μmol TE/g. The grape material is dried, and soaked in ethanol to commence desired concentrate extraction. Following ethanol removal, inactive residue is at least partially separated from the desired concentrate solution, which passes through a macroporous absorption resin that absorbs desired active ingredients. Ethanol resin washing yields an intermediate extraction solution. After ethanol removal, the intermediate extract solution with the mixed active ingredients is refined. During refinement, high concentration of polyphenols and monomeric phenols are separated, and collected. These collected materials yield a desired high ORAC extract solution. Further drying yields the desired material, which is tested and packaged. This material exhibits good water solubility, mild flavor, and can be added to foodstuffs and nutritional supplements as a beneficial antioxidant.
Ethical Naturals, Inc.
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Jianying Weichao Xiaoyan Jiaomei
Yang Ying Xiong Chen