通过综合的二维气色谱学与高分辨率质谱学相结合,对玻璃化葡萄酒进行非目标地理原产地选
Nemanja Koljančić1, Adriano A Gomes1,2, Ivan Špánik1
1Institute of Analytical Chemistry, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, Bratislava, Slovakia.
Journal of separation science
|July 28, 2023
概括
综合的二维气色谱-高分辨率质谱 (GC × GC-HRMS) 有效地分析了 botrytized 葡萄酒中的挥发性有机化合物. 化学测量分析显示,斯洛伐克,匈牙利,法国和奥地利葡萄酒的地理来源不同.
科学领域:
- 食品化学 食品化学
- 分析化学 分析化学
- 化学测量 化学测量 化学测量
背景情况:
- 挥发性有机化合物 (VOC) 对葡萄酒的香味和品质至关重要.
- 全面的二维气体染色学高分辨率质谱 (GC × GC-HRMS) 提供了对复杂的VOC配置文件的详细见解.
- 从GC × GC-HRMS分析大型数据集需要先进的统计方法来进行高效的解释.
研究的目的:
- 根据其挥发性有机化合物概况,根据地理来源区分玻璃化葡萄酒.
- 应用化学测量技术来有效分析GC × GC-HRMS数据.
- 为了确定关键的挥发性化合物,表明地理来源.
主要方法:
- 固相微提取 (SPME) 用于挥发性有机化合物的提取.
- 全面的二维气色谱-高分辨率质谱 (GC × GC-HRMS) 用于分离和检测.
- 基于的费舍尔比率 (F-ratio) 分析和主要组件分析 (PCA) 用于统计差异化.
- 层次集群分析 (HCA) 用于模式确认.
主要成果:
- 主要成分分析 (PCA) 成功地根据地理位置区分了葡萄酒样本.
- 通过F比分析识别的10种统计学上显著的挥发性化合物的减少集来实现差异化.
- 特定的化合物,包括甲基八甲基酸盐,α-ionone和γ-nonalactone被确定为观察到的地理聚类的重要贡献者.
- 层次集群分析证实了PCA.中观察到的地理区别.
结论:
- GC × GC-HRMS与化学测量相结合,提供了一种高效且强大的方法,用于botrytized葡萄酒的地理认证.
- 关键的挥发性有机化合物可以作为可靠的标记物来追踪葡萄酒的来源.
- 先进的统计分析显著提高了复杂的染色学数据的解释,减少了分析时间和提高了准确性.
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