The Antioxidant Activity and Antibacterial Activity of Pigment from Cercis chinensis in Vitro

The objective of this manuscript is to measure and analysis the antioxidant and antibacterial activity of the pigment which is extracted from the flower of Cercis chinensis.A sequence of experiments was conducted to measure the above parameters,such as spectrophotometry and inhibiting bacteria circle diameter measure.The results demonstrate that the pigment has strong reduction and is able to effectively scavenge hydroxyl radical and superanion radical in vitro.Moreover,its scavenging effect has positive correlation with its concentration. When the pigment concentration is 0.48 mg/mL,the reducing power is identical to that of 0.1 mg/mL VC,and the hydroxyl radical and superanion radical eradication rates are 59.3%and 96.1%,respectively.At the same concentration,the pigment has significant concentrationdependent inhibitory effect against E.coli and Staphyloccus aureus and Bacillus subtilis.Diameters of inhibiting bacteria circle of the above three kinds of bacteria are 9.46 mm,9.36 mm, 8.14 mm,respectively.From the aboved results,it can concluded that the pigment has strong antioxidant and antibacterial activity.