Structural elucidation, binding sites exploration and biological activities of bound phenolics from Radix Puerariae Thomsonii
文献类型： 外文期刊
作者： Li, Weixin 1 ; Zhang, Min 1 ; Zhang, Ruifen 2 ; Huang, Fei 2 ; Dong, Lihong 2 ; Jia, Xuchao 2 ; Zhang, Mingwei 2 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll Food Sci & Engn, State Key Lab Food Nutr & Safety, Tianjin 300457, Peoples R China
2.Guangdong Acad Agr Sci, Sericultural & Agrifood Res Inst, Key Lab Funct Foods, Minist Agr,Guangdong Key Lab Agr Prod Proc, Guangzhou 510610, Peoples R China
关键词： Radix puerariae thomsonii; Bound phenolics; Antioxidant activity; Alcohol -metabolizing enzymes; Carbohydrate -hydrolyzing enzymes; Stepwise enzymatic hydrolysis
期刊名称：FOOD CHEMISTRY （ 影响因子：8.8； 五年影响因子：8.6 ）
ISSN： 0308-8146
年卷期： 2024 年 450 卷
页码：
收录情况： SCI
摘要： Radix puerariae thomsonii (RPT) contains many phenolics and exhibits various health benefits. Although the free phenolics in RPT have been identified, the composition and content of bound phenolics, which account for approximately 20% of the total phenolic content, remain unknown. In this study, 12 compounds were isolated and identified from RPT-bound phenolic extracts, of which 2 were novel and 6 were reported first in RPT. ORAC and PSC antioxidant activities of 12 compounds, as well as their effects on alcohol dehydrogenase (ADH), aldehyde dehydrogenase (ALDH), alpha-glucosidase, and alpha-amylase were evaluated. Genistein exhibited the highest ORAC activity, while daidzin demonstrated superior PSC activity. Five compounds, including two new compounds, exhibited the ability to activate both ADH and ALDH. All the compounds except 4-hydroxyphenylacetic acid methyl ester and 2,4,4 '-trihydroxydeoxybenzoin demonstrated inhibitory effects on alpha-glucosidase and alpha-amylase. Alkaline hydrolysis and stepwise enzymatic hydrolysis revealed that bound phenolics in RPT mainly exist within starch.
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