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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Comparison of Antioxidant Activities of Different Colored Wheat Grains and Analysis of Phenolic Compounds
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Comparison of Antioxidant Activities of Different Colored Wheat Grains and Analysis of Phenolic Compounds

机译：不同颜色小麦籽粒抗氧化活性的比较及酚类化合物的分析

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Extracts from six wheat varieties (three purple, one yellow, two red, and one white) were evaluated and compared for their antioxidant capacities against oxygen radical and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. Phenolic composition in the extracts was examined by high-performance liquid chromatography and mass spectrometry. The results showed that Charcoal purple wheat had remarkable antioxidant activity (up to 6899 μmol/100 g) followed by Red Fife wheat and yellow Luteus wheat. White AC Vista wheat, due to its lowest phenolic content, exhibited the weakest antioxidant property. The major phenolic composition identified in wheat grains consisted of phenolic acids, flavones, flavonols, and anthocyanins. The former three components were detected in all of the wheat varieties, whereas anthocyanins were identified only in purple wheat. Therefore, anthocyanins could be the major compounds distinguishing purple wheats from other colored wheats with high antioxidant activity.
机译：评价了六个小麦品种（三个紫色，一个黄色，两个红色和一个白色）的提取物，并比较了它们对氧自由基和2,2-二苯基-1-吡啶并肼基（DPPH）自由基的抗氧化能力。通过高效液相色谱和质谱法检测提取物中的酚类成分。结果表明，木炭紫色小麦具有显着的抗氧化活性（最高达6899μmol/ 100 g），其次是红横笛小麦和黄琵琶小麦。白色AC Vista小麦由于酚含量最低，因此抗氧化性能最弱。小麦籽粒中的主要酚类成分由酚酸，黄酮，黄酮醇和花青素组成。在所有小麦品种中均检测到前三个成分，而仅在紫色小麦中鉴定出花青素。因此，花色苷可能是区分紫色小麦与其他具有高抗氧化活性的有色小麦的主要化合物。

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