藜蒿叶中1,4-双咖啡酰奎宁酸的鉴定及双咖啡酰奎宁酸类化合物体外抑制黄嘌呤氧化酶和抑制尿酸钠诱导IL-1β的构效关系

被引:5
作者
曹伟伟
吴婷
方雅静
程玉鑫
潘思轶
徐晓云
机构
[1] 华中农业大学食品科学技术学院
关键词
藜蒿叶; 双咖啡酰奎宁酸; 黄嘌呤氧化酶; 尿酸钠诱导的IL-1β; 构效关系;
D O I
10.16429/j.1009-7848.2020.02.001
中图分类号
TS201.2 [食品化学];
学科分类号
083201 ;
摘要
本文主要鉴定藜蒿叶提取物中双咖啡酰奎宁酸(di-CQA)的结构,并研究其对体外抑制黄嘌呤氧化酶(XOD)和抑制尿酸钠(MSU)诱导的IL-1β的定性构效关系。采用HPLC-Q/TOF-MS鉴定藜蒿叶提取物中diCQA的结构,同时系统研究不同咖啡酸取代位置对di-CQA抑制XOD活性和MSU诱导的IL-1β的影响。结果表明:藜蒿叶提取物中富含5种di-CQA (1,4-diCQA、3,4-diCQA、1,5-diCQA、3,5-diCQA和4,5-diCQA),其中,1,4-diCQA存在于藜蒿叶为首次报道。不同咖啡酸取代位置对di-CQA抑制XOD的影响强弱为:C1取代>C4取代>C5取代>C3取代;不同咖啡酸取代位置对di-CQA抑制MSU诱导的IL-1β的影响强弱为:C1取代>C5取代>C3取代,C4取代≥C5取代。此外,di-CQA抑制XOD的活性与抑制MSU诱导的IL-1β活性具有正相关性,提示di-CQA可能通过抑制XOD发挥抑制MSU诱导的IL-1β的活性。该研究揭示了di-CQA预防高尿酸血症和痛风活性的结构特征,也为进一步利用藜蒿及其它膳食来源的di-CQA作为预防高尿酸血症和痛风的食品提供借鉴。
引用
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页码:1 / 8
页数:8
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