不同品种猕猴桃果实的抗氧化活性研究.

In order to identify the differences of antioxidant activities in different kiwifruit varieties, this paper studied the scavenging abilities of three kiwifruit varieties(including XuXiang, YaTe and Hayward) on DPPH· free radical, hydroxyl radical(·OH), ABTS+· free radical and the chelating ability of the cupric. The results showed that three kiwifruit varieties displayed different abilities to scavenge free radicals. The scavenging rate of DPPH· free radical in XuXiang, YaTe and Hayward was 69. 88%, 52. 23% and 24. 88%, respectively;The scavenging rate of hydroxyl radical(·OH) in the three varieties were 81. 47% for XuXiang, 61. 60% for YaTe and 71. 36% for Hayward;The scavenging rate of ABTS+· free radical in in the three varieties was 38. 05%, 22. 45% and 35. 62%, respectively;The chelating ability of copper ions in the three varieties was 77. 33%, 57. 56% and 65. 12%, respectively. The above data indicated that the antioxidant capacities of the three varieties is XuXiang >YaTe > Hayward. [ABSTRACT FROM AUTHOR]