Study on Relationship Between Degree of Polymerization and Radical Scavenging Capacity of Grape Seed Procyanidins

DPPH·and two chemical irritant light reactions were used for comparing the radical scavenging capacity of grape seed procyanidin fractions with different degree of polymerization(DP). Results showed that the DPPH· scavenging capacity of procyanidins was higher than VC, VE and BHT, with IC50 being 1.8, 2.5, 6.3, 3.5μg/ml respectively. For O·2, the scavenging ability of procyanidins was higher than…