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蓝色和紫色小麦多酚提取物的体外抗氧化活性评价 预览

Evaluation of in vitro antioxidant activities of polyphenol extracts from blueand purple wheat
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摘要 为研究蓝色和紫色小麦多酚的体外抗氧化活性,该研究以蓝色和紫色小麦为原料,普通小麦为对照,分别提取游离酚和结合酚,并对其体外抗氧化活性进行评价。结果表明:蓝色和紫色小麦游离酚含量分别高于对照31.9%、25.3%,其结合酚含量分别高于对照30.0%、17.4%。小麦多酚提取物对自由基清除效果存在差异,当麦粉浓度为40mg/mL时,蓝色和紫色小麦的游离酚对ABTS清除率分别高于结合酚24.9%、22.4%;结合酚对羟自由基清除效率较游离酚高,蓝色和紫色小麦结合酚对羟自由基的清除率分别高于游离酚41.8%、38.1%;三种小麦体外抗氧化能力整体表现为:蓝色小麦>紫色小麦>普通小麦。综上,蓝色和紫色小麦富含酚类,体外抗氧化活性较强,可作为抗氧化功能食品进行开发。 The purpose of this study was to evaluate the in vitro antioxidant capacities of polyphenol extracts from blue and purple wheat. Free and bound polyphenols were extracted from blue,purple,and common wheat( control).The results showed that the contents of free polyphenols in blue and purple wheat were 31. 9% and 25. 3%,respectively,while the contents of bound polyphenols were 30. 0% and 17. 4%,respectively,which were all higher than the control. Moreover,their scavenging effects on radicals were different. At a concentration of 40 mg/mL,the scavenging rates of ABTS by free polyphenols from blue and purple wheat were 24. 9% and 22. 4%,respectively,higher than that by bound polyphenols. On the other hand,the scavenging rates of hydroxyl radicals by bound polyphenols from blue wheat and purple wheat were 41. 8% and 38. 1%,respectively,higher than that by free polyphenols. The in vitro antioxidant activities of these three varieties of wheat from high to low were blue wheat > purple wheat > control. In conclusion,blue and purple wheat can be developed as antioxidative functional foods.
作者 刘富明 母婷婷 王彩霞 李诚 蒲至恩 LIU Fuming;MU Tingting;WANG Caixia;LI Cheng;PU Zhien(College of Food Science, Sichuan Agricultural University,Ya’an 625014,China;College of Agronomy, Sichuan Agricultural University,Chengdu 611130,China)
出处 《食品与发酵工业》 CAS CSCD 北大核心 2019年第9期202-206,共5页 Food and Fermentation Industries
基金 四川农业大学人才引进科研启动费(03120306).
关键词 蓝色小麦 紫色小麦 游离酚 结合酚 抗氧化 blue wheat purple wheat free polyphenols bound polyphenols antioxidant activity
作者简介 第一作者/通讯作者:王彩霞,副教授,硕士研究生,E-mail:wangcaixia_1127@163.com.
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