水飞蓟酰胺（HCAA）衍生物、类黄酮 C-糖苷、酚酸和粟米的抗氧化特性。
Hydroxycinnamic acid amide (HCAA) derivatives, flavonoid C-glycosides, phenolic acids and antioxidant properties of foxtail millet.
机构信息
Henan University of Science & Technology, College of Food & Bioengineering, Luoyang, Henan 471023, China; University of Manitoba, Department of Food & Human Nutritional Sciences, 250 Ellis Building, Winnipeg, Manitoba R3T 2N2, Canada.
Henan University of Science & Technology, College of Food & Bioengineering, Luoyang, Henan 471023, China.
出版信息
Food Chem. 2019 Oct 15;295:214-223. doi: 10.1016/j.foodchem.2019.05.058. Epub 2019 May 9.
The profiles of phenolic compounds and antioxidant properties of dehulled foxtail millets were studied. Twenty-one phenolics were detected in the free fraction, including a series of nine hydroxycinnamic acid spermidines reported for the first time and three flavonoid C-glycosides of kaempferol and apigenin. Twenty-three phenolic acid derivatives were detected in the bound fraction with ferulic acid being the predominant phenolic acid, as well as four ferulic acid dimers (DFAs) reported for the first time in foxtail millet. Total phenolic contents (TPC) of free and bound fractions varied from 161.86 to 224.47 mg ferulic acid equivalent (FAE)/kg DW, 170.69 to 294.75 mg FAE/kg DW, respectively. Antioxidant activities, based on the DPPH, ABTS and ORAC assays, were determined for all extracts related to TPC. Dehulled foxtail millet contains a diverse profile of phenolic compounds potentially suitable for development of functional foods with unique antioxidant properties.
对去壳黍米的酚类化合物组成和抗氧化特性进行了研究。在游离部分检测到 21 种酚类化合物，其中包括首次报道的一系列 9 种羟基肉桂酰基腐胺，以及 3 种山柰酚和芹菜素的黄酮类 C-糖苷。在结合部分检测到 23 种酚酸衍生物，其中以阿魏酸为主要酚酸，此外还首次在黍米中发现了 4 种阿魏酸二聚体（DFAs）。游离和结合部分的总酚含量（TPC）分别为 161.86-224.47 mg 阿魏酸当量（FAE）/kg DW 和 170.69-294.75 mg FAE/kg DW。基于 DPPH、ABTS 和 ORAC 测定法，对所有与 TPC 相关的提取物进行了抗氧化活性测定。去壳黍米含有多种酚类化合物，具有独特的抗氧化特性，可能适合开发功能性食品。
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