Evaluation of allergens in propolis by ultra-performance liquid chromatography/tandem mass spectrometry
作者:Claudio Gardana、Paolo Simonetti
DOI:10.1002/rcm.5025
日期:2011.6.15
sensitive ultra‐performance liquid chromatography tandem mass spectrometry analysis (UPLC/MS/MS) for the evaluation of the amount of caffeic acid and its esters with allergenic action in raw propolis samples and commercial formulations. The separation was carried out on a 1.7 μm C18 BEH Shield column and the detection performed by means of electrospray ionization in negative ion mode with multiple reaction
纯化的蜂胶提取物被用作治疗多种疾病的传统药物。其有益活性主要归因于多酚部分。然而,蜂胶可引起过敏性皮炎,并且人类的致敏率主要在年轻受试者中显着增加。这项研究的目的是开发和验证选择性和灵敏的超高效液相色谱串联质谱分析(UPLC / MS / MS),用于评估蜂胶样品和蜂胶样品中咖啡酸及其酯类的变应原作用。商业配方。分离在1.7μmC 18上进行BEH Shield色谱柱,并通过负离子模式下的电喷雾电离和多反应监测进行检测。通过注入到高分辨率系统(FTICR-MS)中并使用精确的质量测量来完成对前体离子和产物离子公式的确认。误差低于1.4 ppm。标准曲线范围为0.5–10μg/ mL,使用二氢咖啡酸作为内标(IS)。3-甲基-2-丁烯基(3M2B),3-甲基-3-丁烯基(3M3B),2-甲基-2-丁烯基(2M2B),苄基(CABE)的检测下限(LLOD) ,苯乙基咖啡酸(CAPE)和咖啡酸(CA)和IS分别为0