拉曼光谱与化学测量技术相结合,用于评估驼奶粉的真实性
Omar Ait El Alia1, Abdennacer El Mrabet2, Soumaya Boukrouh3
1Laboratory of the Engineering and Applied Technologies, Higher School of Technology, Sultan Moulay Slimane University, Morocco.
Journal of AOAC International
|August 13, 2025
概括
拉曼光谱与化学分析相结合,有效地检测了驼奶粉中的牛奶粉改. 这种可靠的方法为消费者确保了产品的真实性和质量.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 化学测量 化学测量 化学测量
背景情况:
- 驼奶粉与牛奶粉的改是一个越来越严重的问题,影响营养价值和消费者信任.
- 鉴于在专业卫生市场对驼牛奶的需求日益增加,真实性验证至关重要.
研究的目的:
- 为了研究拉曼光谱的有效性,加上化学测量技术来检测和量化驼奶粉中的母牛奶粉造.
- 建立一个强大的分析框架,以确保驼奶粉的完整性.
主要方法:
- 拉曼光谱法用于分析驼奶粉与牛奶粉混合的度从0%到50%不等.
- 主要组件分析 (PCA) 用于缩小维度,其次是部分最小平方回归 (PLSR) 建模.
- 光谱数据经历了各种预处理,包括原始,萨维茨基-戈莱和差距衍生,使用间隔PLS (IPLS) 进行增强的变量选择.
主要成果:
- PCA有效捕获了99.6%的光谱方差,表明了有效的数据压缩.
- 最初的PLSR模型显示出强大的预测能力 (R2cv = 95.93%),通过光谱预处理显著改善.
- 使用差距导数 (R2test = 99.94%,RMSEtest = 1.10) 实现了近乎完美的预测准确度,突出了该方法的精度.
结论:
- 拉曼光谱与PCA,PLSR和IPLS的整合提供了一种精确,可靠和强大的方法,用于检测驼奶粉中的改.
- 这种分析方法是乳制品行业质量控制的有效工具,确保了驼牛奶产品的真实性和安全性.
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