Extraction technology and antioxidant activity analysis of polyphenols from apricot (Armeniaca sibirica) seed coat

The optimum extraction condition of polyphenols from apricot seed coat with the herbal blitzkrieg extractor and the antioxidant activity were investigated in this paper. The four antioxidant assays were contained total reductive ability, scavenging ability for DPPH·, ·OH, and O2-·. The optimum extraction condition was listed:solid-liquid ratio 1∶20 (g/m L) , ethanol concentration 30% and time 120 s. Under this situation, the extraction rate of polyphenols was 9.650mg/g. When the polyphenols concentration was 0.4mg/m L, the rate of scavenging DPPH· was 92.9%. When it was 3.0mg/m L, the rate of scavenging O2-· was 93.1%. When it was 2.0mg/m L, the rate of scavenging OH· was 98.1%. When it was 1.0mg/m L, reducing force was 1.411.