光皮木瓜汁体外抗氧化活性研究  

in vitro Antioxidant Capacity of Chaenomeles sinensis(Thouin) Koehne Juice

作　　者：张淑娟[1] 徐怀德[1] 米林峰 

机构地区：[1]西北农林科技大学食品科学与工程学院,陕西杨凌712100 [2]榆林市产品质量监督检验所,陕西榆林719000

出　　处：《食品科学》2011年第21期56-61,共6页Food Science

基　　金：陕西省陕南突破发展基金项目(2006ZKC(二)04-34)

摘　　要：采用体外抗氧化实验评价光皮木瓜汁的抗氧化活性,并对总酚和VC含量与抗氧化能力的相关性进行分析。结果显示:光皮木瓜汁有较强的清除自由基能力,稀释10倍的果汁清除ABTS+.、DPPH自由基、羟自由基(.OH)和超氧阴离子自由基(O-2.)的IC50分别为0.0043、0.021、0.22、0.39mL,且对DPPH自由基、ABTS+.的清除效果明显高于O-2.和.OH,同时可显著抑制Fe2+诱发的卵黄脂蛋白脂质过氧化,具有较高的还原能力。光皮木瓜汁清除DPPH自由基、ABTS+.和抑制卵黄脂蛋白脂质过氧化的能力与总酚含量之间的相关性均高于其与VC含量之间的相关性。The in vitro antioxidant capacity of Chaenomeles sinensis（Thouin） Koehne juice was evaluated and the correlations of antioxidant capacity with total phenol and ascorbic acid contents of the fruit juice were analyzed.The results showed that this juice possessed strong scavenging activity against ABTS radical,DPPH radical,hydroxyl radical and superoxide anion radical.The corresponding IC50 values were 0.0043,0.021,0.22 mL and 0.39 mL,respectively.The juice showed strong reducing power and significant inhibitory effects on Fe2＋-induced peroxidation in yolk lipoprotein.Correlation analysis showed that total phenol content in Chaenomeles sinensis（Thouin） Koehne juice was higher correlated with free radical scavenging ability against DPPH and ABTS and with yolk lipoprotein peroxidation inhibiting ability than ascorbic acid.This study demonstrates that Chaenomeles sinensis（Thouin） Koehne juice possesses high antioxidant capacity and a great commercial development.

关 键 词：光皮木瓜汁 体外抗氧化 相关性 

分 类 号：TS255.1[轻工技术与工程—农产品加工及贮藏工程]