谱光测量和色谱分析与化学测量工具相结合,将绿色咖啡豆分为特殊或传统的咖啡豆
Winston Pinheiro Claro Gomes1, Gisele Gonçalves Bortoleto2, Wanessa R Melchert3
1Center for Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, São Paulo, Brazil.
Journal of food science
|October 27, 2023
概括
化学测量通过分析化学化合物,有效地区分特殊和传统的绿色咖啡豆. 这种方法为专家评估提供了一个更快,更便宜的替代品,用于分类咖啡质量.
科学领域:
- 农业化学 农业化学
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
背景情况:
- 绿色咖啡豆具有固有的化学特征,可以在烤之前表明其质量.
- 将绿色咖啡归类为"特殊"或"传统"取决于这些烤前化学标记.
- 客观的化学分析可以克服传统咖啡评价中的主观偏见.
研究的目的:
- 为了确定绿色咖啡豆中的关键化学化合物.
- 用化学分析来区分特殊和传统的绿色咖啡.
- 为了确定影响咖啡分类的特定化学属性.
主要方法:
- 化合物,糖的量化 (光谱测量).
- 对咖啡因,三角蛋白,5-HMF,基酸,原酸,咖啡酸和尼古丁酸 (HPLC-UV-Vis) 的分析.
- 确定诸如乙甲和乙醇之类的挥发性化合物 (HS-GC-FID).
- 主要组件分析 (PCA) 的应用用于数据差异化.
主要成果:
- 在总化合物,咖啡因,非减小糖,总糖,尼古丁酸,5-HMF,乙,乙醇/甲醇比率中观察到显著差异.
- PCA成功地将绿色咖啡豆分为特殊和传统类别.
- 仅仅光谱光度分析就足以进行分类,同时还进行了全面的化学分析.
结论:
- 化学分析,特别是PCA,为绿色咖啡豆的分类提供了客观有效的方法.
- 该研究确定了与传统绿色咖啡区分的关键化学标记.
- 光谱光度法为咖啡分类提供了一种经济有效和快速的方法,减少了对主观专家评估的依赖.
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