Free Radical Scavenging Properties and Phenolic Content of Chinese Black-Grained Wheat

文献类型： 外文期刊

第一作者： Li, WD

作者： Li, WD;Shan, F;Sun, SC;Corke, H;Beta, T

作者机构：

关键词： Black-grained wheat;radical scavenging;antioxidant;phenolic;DPPH free radical

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.279； 五年影响因子：5.269 ）

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年卷期：

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收录情况： SCI

摘要： Free radical scavenging properties and phenolic content of extracts from a novel Chinese black-grained wheat were evaluated for comparison with selected wheat controls.Extracts of bran and whole meal were compared for their scavenging activities against the 2,2-diphenyl-1-picryhydrazyl (DPPH) free radical.The total phenolic content and phenolic acid levels were determined using colorimetric and high-performance liquid chromatography (HPLC) methods,respectively.There were significant differences in radical scavenging activities and phenolic contents among bran or whole meal samples of Chinese black-grained wheat and selected wheat controls.Chinese black-grained wheat had the strongest scavenging activity and the highest total phenolic content among the wheat samples.The scavenging activity and total phenolic content of wheat bran was generally twice as high as that of whole meal.A positive correlation was found between DPPH radical scavenging activity and total phenolic content of bran (R=0.86) and whole meal (R=0.96).In addition,HPLC analysis detected the presence of gallic,p-hydroxybenzoic,caffeic,syringic,p-coumaric,vanillic,gentisic,o-coumaric acid,and ferulic acids in wheat bran.Ferulic acid content was highest among the phenolic acids.Chinese black-grained wheat may be considered as a potential source of natural antioxidants given its high free radical scavenging ability and phenolic content.Additional research is needed to further investigate other phenolic compounds and evaluate their contribution to the antioxidant activity in order to understand the nutraceutical value of the novel black-grained wheat genotype.

分类号： S13

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