通过手持NIR光谱方法对非洲地理咖啡种类 (豆类,烤制,粉末) 的新认证
Vida Gyimah Boadu1,2, Ernest Teye1, Francis Padi Lamptey1,3
1University of Cape Coast, College of Agriculture and Natural Sciences, School of Agriculture, Department of Agricultural Engineering, Cape Coast, Ghana.
Heliyon
|August 22, 2024
概括
近红外 (NIR) 光谱与化学测量相结合,有效地区分了非洲咖啡的起源. 这项技术为供应链可追溯性和防止全球咖啡贸易中的欺诈提供了可靠的方法.
科学领域:
- 农业科学 农业科学
- 分析化学 分析化学
- 食品科学 食品科学 食品科学
背景情况:
- 非洲咖啡是全球重要的商品,其地理来源对贸易和真实性至关重要.
- 确保咖啡的真实性和防止欺诈需要强大的方法来追踪地理来源.
- 近红外 (NIR) 光谱技术提供了一种快速,非破坏性的分析技术,适用于商品分析.
研究的目的:
- 通过手持NIR光谱学,在地理上区分不同类型的非洲咖啡 (豆咖啡,烤咖啡,粉咖啡).
- 开发一个可靠的供应链可追溯方法,以打击非洲咖啡的欺诈行为.
- 评估不同化学测量模型在根据原产地对咖啡进行分类时的有效性.
主要方法:
- 从五个非洲国家收集了罗布斯塔咖啡样本.
- 使用手持近红外 (NIR) 光谱 (740-1070 nm) 进行样本扫描.
- 应用了光谱预处理技术 (平均集中,乘数分散校正,标准正常变量) 和化学模型 (SVM,LDA,NN,RF,PLS-DA).
主要成果:
- 最佳分类模型实现了高准确度:0.87 (生豆) 和0.97 (烤豆).
- 像SNV + SD-SVM和MSC + SD-NN这样的特定模型在烤咖啡方面表现出色.
- 该研究证实了NIR光谱和化学测量在地理来源确定方面的潜力.
结论:
- 手持NIR光谱与化学测量相结合,为区分非洲咖啡的地理来源提供了一个有效的工具.
- 这种方法提高了质量保证,并支持咖啡行业的供应链可追溯性.
- 这些发现有助于打击欺诈和确保非洲咖啡贸易的完整性.
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