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高效液相色谱-串联质谱法分离鉴定紫洋葱花色苷 被引量:7

High Performance Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry for the Analysis of Anthocyanins in Red Onion
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摘要 利用高效液相色谱-二极管阵列检测-电喷雾质谱(HPLC-DAD-ESI-MS2)联用技术分析了紫洋葱中花色苷类化合物的成分和含量。首先用含0.1%HCl的甲醇溶液提取紫洋葱中的花色苷,然后用XAD-7大孔树脂纯化,最后用HPLC-DAD-ESI-MS2进行紫外-可见光谱和质谱分析,分离鉴定出6种花色苷。花色苷盐酸水解后的糖基均为葡萄糖,并且有4种花色苷发生酰化。经紫外-可见光谱、质谱和文献报道综合分析确定了紫洋葱中的主要花色苷分别为矢车菊-3-葡萄糖苷、矢车菊-3,5-二葡萄糖苷、矢车菊-3-丙二酸酰葡萄糖苷和矢车菊-3,5-丙二酸酰二葡萄糖苷,峰面积归一化含量分别为26.43%、9.38%、37.27%和12.57%;含量较低的2种花色苷为芍药-3-丙二酸酰葡萄糖苷和芍药-3,5-丙二酸酰二葡萄糖苷,峰面积归一化含量分别为8.60%和2.86%。 The anthocyanin compositions in red onion were analyzed using high performance liquid chromatography (HPLC) equipped with a diode array detector (DAD) combined with UV-Vis spectra and electrospray ionization tandem mass spectrometry (ESI-MS2). The pigments were extracted from red onion with 0.1% HCl(v/v) methanol solution, purified by an Amberlite XAD -7 column and characterized by means of HPLC-DAD-ESI-MS2 analysis. A total of 6 anthocyanins were identified from red onion according to the UV spectra, MS data and references. The sugars after the acid hydrolysis of anthocyanins were identified as glucose, and four were acylated. The major anthocyanins in the extracts were identified as cyanidin (Cy)-3-glucoside (26.43 % , peak area percent) , Cy-3,5-diglucoside (9.38 % ) , Cy-3-malonyglucoside (37.27 % ) and Cy-3,5-malonydiglucoside ( 12.57 % ) respectively ; two minor ones are peonidin (Pn) -3-malonyglucoside ( 8.60% ) and Pn-3,5- malonydiglucoside (2.86 % ) .
出处 《食品与发酵工业》 CAS CSCD 北大核心 2010年第6期151-156,共6页 Food and Fermentation Industries
基金 国家自然科学基金项目(20872083) 山东省中青年科学家奖励基金项目(BS2009SW047) 作物生物学国家重点实验室开放课题项目(20082KF05)
关键词 紫洋葱 花色苷 高效液相色谱-二极管阵列检测-电喷雾质谱 red onion, anthocyanins, HPLC-DAD-ESI-MS2
作者简介 硕士研究生 王晓研究员为通讯作者,E-mail:wangx@keylab.net。
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