Effective analysis of rotundone at below-threshold levels in red and white wines using solid-phase microextraction gas chromatography/tandem mass spectrometry
作者:F. Mattivi、L. Caputi、S. Carlin、T. Lanza、M. Minozzi、D. Nanni、L. Valenti、U. Vrhovsek
DOI:10.1002/rcm.4881
日期:2011.2.28
of rotundone using tandem mass spectrometry in multiple reaction monitoring (MRM) mode with d5‐rotundone as internal standard. With limits of detection (LODs) of 1.5 ng/L in white wine and 2.0 ng/L in red wine, intraday repeatability CV values of 6% and 5% at 50 ng/L and 500 ng/L and interday repeatability CV values of 13% and 6% at 50 ng/L and 500 ng/L, respectively, the improved protocol provides
鱼藤酮是属于瓜亚尼族的一种氧化倍半萜烯,使白胡椒和黑胡椒以及红酒具有“胡椒味”香气。在这里,我们描述了一种新颖,便捷的合成罗丹酮的方案,该方案从市售化合物开始,仅需两个反应步骤,以及一种改进的,更快的GC分离方法(30分钟),其中使用了串联质谱法对罗丹酮进行了选择性定量。d 5的多反应监测(MRM)模式地平酮作为内标。白葡萄酒的检出限(LOD)为1.5 ng / L,红酒的检出限为2.0 ng / L,在50 ng / L和500 ng / L时的日间重复性CV值分别为6%和5%,改进后的方案分别在50 ng / L和500 ng / L时分别为13%和6%,为常规分析白葡萄酒和红葡萄酒中的鱼藤酮提供了所需的灵敏度和选择性。该方法的最初应用突显出浓度异常高的鱼藤酮的存在,从而解释了Schioppettino和Vespolina红葡萄酒以及Gruener Veltliner白葡萄酒中独特的胡椒香气的起源。版权所有©2011