Characterization of the active components and bioaccessibility of phenolics in differently colored foxtail millets
文献类型： 外文期刊
作者： Gao, Yuan 1 ; Ping, Hua 1 ; He, Zhaoying 1 ; Liu, Jing 1 ; Zhao, Meng 1 ; Ma, Zhihong 1 ;
作者机构： 1.Beijing Acad Agr & Forestry Sci, Inst Qual Stand & Testing Technol, 9 Middle Rd Shuguanghuayuan, Beijing 100097, Peoples R China
关键词： Foxtail millet; Color; Bioactive compound; Conjugated and bound phenolic; Bioaccessibility
期刊名称：FOOD CHEMISTRY （ 影响因子：8.5； 五年影响因子：8.2 ）
ISSN： 0308-8146
年卷期： 2024 年 452 卷
页码：
收录情况： SCI
摘要： Differently colored foxtail millet (Setaria italica) cultivars were compared regarding their amylose, B-complex vitamin, vitamin E, and phenolic compositions, as well as the bioaccessibility of their phenolics in simulated in vitro digestion. Dark-colored foxtail millets contained more thiamine, pyridoxine, and tocopherols, but less riboflavin, than light-colored ones. Phenolics were more abundant in dark-colored cultivars. Insoluble bound fractions accounted for 75%-83% of the total phenolics, with ferulic acid detected as the most plentiful compound. The major bioaccessible phenolic was free ferulic acid, with 100%-120% bioaccessibility, depending on cultivar, followed by p-coumaric acid and isoferulic acid (50%-80%). These relatively high bioaccessibilities were likely due to the release of soluble conjugated or insoluble bound phenolics during digestion. However, the contents of other free phenolics were largely decreased following in vitro digestion, resulting in low bioaccessibility, which also means that the release from the conjugated and bound fractions was poor.
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