柚皮苷
氧自由基吸收能力
化学
类黄酮
抗氧化剂
芹菜素
黄烷酮
食品科学
多酚
植物
抗氧化能力
生物化学
色谱法
生物
作者
Mei Deng,Xuchao Jia,Lihong Dong,Lei Liu,Fei Huang,Jianwei Chi,Qin Ma,Dong Zhao,Mingwei Zhang,Ruifen Zhang
出处
期刊:Food Chemistry
[Elsevier]
日期:2022-01-01
卷期号:366: 130605-130605
被引量:20
标识
DOI:10.1016/j.foodchem.2021.130605
摘要
The Citrus genus is a good source of dietary flavonoids, which have many health benefits. As a representative citrus fruit, the flavonoids composition in Shatianyu (Citrus grandis L. Osbeck) pulp remains to be investigated. In the present study, 11 flavonoids were isolated and identified from Shatianyu pulp flavonoid extracts (SPFEs). Among them, 4 flavonoids were previously undescribed and 2 flavonoids were firstly isolated from pummelo. The cellular antioxidant activity (CAA) and oxygen radical absorbance capacity (ORAC) of isolated compounds were evaluated. Naringin and rhoifolin showed the highest ORAC activity, and the presence of a 3-hydroxy-3-methylglutaryl or a 4′-glucose decreased the ORAC activity of flavonoids. The contribution of isolated flavonoids to the holistic antioxidant activity of SPFEs was determined by an online knockout method. Melitidin, bergamjuicin and naringin contributed most to ORAC activity, while bergamjuicin, melitidin and apigenin-4′-O-β-d-glucopyranosyl-7-O-α-l-rhamnopyranosyl-(1 → 2)-[6″-O-(3- hydroxy-3-methylgltaryl)]-β-d-glucopyranoside contributed most to CAA activity.
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