Changes of polyphenols and their antioxidant activities in non-pigmented, red and black rice during in vitro digestion

IF 6.5 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry: X Pub Date : 2024-09-10 DOI:10.1016/j.fochx.2024.101821

Jing Yu , Xin Zheng , Dawei Zhu , Qingyu Xu , Feifei Xu , Mingxue Chen , Lingqi Meng , Yafang Shao

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Abstract

Polyphenols, a major bioactive constituent in rice grain, require processing and digestion before being absorbed by human body. Free and bound phenolics, flavonoids and their antioxidant activities in non-pigmented, red and black rice after cooking and INFOGEST digestions of oral, gastric and intestinal phases were investigated. It showed that cooking caused great losses of polyphenols and antioxidant activity. Free ferulic, isoferulic and p-coumaric acid in most rice were highest at intestinal phase (p < 0.05). Bound ferulic acid in three colored rice, bound p-coumaric acid in black rice and catechin in red rice were higher at oral and/or gastric phase. After cooking, total flavonoids of non-pigmented and pigmented rice were highest at intestinal and gastric phase, respectively. Cyanidin-3-O-glucoside, peonidin-3-O-glucoside and quercetin peaked at intestinal phase in black rice. It suggested that black rice has a greater potential to be used in meal balance and functional product development.

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无色素大米、红米和黑米中的多酚及其抗氧化活性在体外消化过程中的变化

多酚是米粒中的一种主要生物活性成分，需要经过加工和消化才能被人体吸收。研究人员调查了无色素大米、红米和黑米在经过烹饪和 INFOGEST 消化（口腔、胃和肠道阶段）后的游离和结合酚、类黄酮及其抗氧化活性。结果表明，蒸煮会造成多酚和抗氧化活性的大量损失。大多数大米中的游离阿魏酸、异阿魏酸和对香豆酸在肠道阶段含量最高（p < 0.05）。三色米中的结合阿魏酸、黑米中的结合对香豆酸和红米中的儿茶素在口腔和/或胃中含量较高。烹饪后，非色素大米和色素大米的总黄酮含量分别在肠道期和胃肠期最高。黑米中的花青素-3-O-葡萄糖苷、芍药苷-3-O-葡萄糖苷和槲皮素在肠道阶段含量最高。这表明黑米在膳食平衡和功能性产品开发方面具有更大的应用潜力。

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来源期刊

Food Chemistry: X CHEMISTRY, APPLIED-

CiteScore

4.90

自引率

6.60%

发文量

315

审稿时长

55 days

期刊介绍： Food Chemistry: X, one of three Open Access companion journals to Food Chemistry, follows the same aims, scope, and peer-review process. It focuses on papers advancing food and biochemistry or analytical methods, prioritizing research novelty. Manuscript evaluation considers novelty, scientific rigor, field advancement, and reader interest. Excluded are studies on food molecular sciences or disease cure/prevention. Topics include food component chemistry, bioactives, processing effects, additives, contaminants, and analytical methods. The journal welcome Analytical Papers addressing food microbiology, sensory aspects, and more, emphasizing new methods with robust validation and applicability to diverse foods or regions.