The substance is a secondary product in the growth and metabolism of plant, and it is widely existed in the roots, stems, peels of plant. Many functions of polyphenol have been found gradually. It is noted by research, which has the bioactivity of clearing free groups and anti-oxidation and good virtues of inhibiting bacterium, virtues, cancer, tumors and prevention and cure heart disease. Grapevine has attracted more and more concern for its potential value of polyphenol extraction and utilization....