Simultaneous HPLC Analysis of Biogenic Amines, Amino Acids, and Ammonium Ion as Aminoenone Derivatives in Wine and Beer Samples
作者:Sergio Gómez-Alonso、Isidro Hermosín-Gutiérrez、Esteban García-Romero
DOI:10.1021/jf062820m
日期:2007.2.1
A method has been developed for the simultaneous analysis of biogenic amines, amino acids, and the ammonium ion in wine and beer. Aminoenones formed by the reaction of amino acids, biogenic amines, and the ammonium ion with the derivatization reagent diethyl ethoxymethylenemalonate are separated by HPLC. Reaction takes place in methanolic alkaline medium for 30 min in an ultrasonic bath. Further heating
已经开发了一种同时分析葡萄酒和啤酒中生物胺,氨基酸和铵离子的方法。通过氨基酸分离由氨基酸,生物胺和铵离子与衍生试剂乙氧基亚甲基丙二酸二乙酯反应形成的氨基烯酮。在超声浴中,在甲醇碱性介质中反应30分钟。在70摄氏度下进一步加热2小时,会完全降解过量的衍生试剂和副产物。铵分析结果和酶分析结果的比较显示出良好的相关性(r = 0.953)。所提出的分析方法具有以下优点:葡萄酒和啤酒易于衍生化;单次进样定量24种氨基酸,9种生物胺和铵离子;使用光电二极管阵列检测器;样品制备过程中过量衍生试剂的完全降解;氨基酸的检出限低于0.40 mg / L,生物胺的检出限低于0.06 mg / L。