空间偏移拉曼光谱 (SORS) 和机器学习在英国蜂蜜中用于糖伪造检测的应用
Mennatullah Shehata1, Sophie Dodd1, Sara Mosca2
1Centre for Soil, Agrifood and Biosciences, Cranfield University, College Road, Cranfield, Bedford MK43 0AL, UK.
Foods (Basel, Switzerland)
|August 10, 2024
概括
这项研究开发了一种使用空间偏移拉曼光谱 (SORS) 和机器学习的快速,非侵入式传感器方法,用于检测英国蜂蜜中的糖造. 该技术准确地识别出杂质的类型和含量,帮助生产商确定蜂蜜的真实性.
科学领域:
- 食品科学 食品科学 食品科学
- 分析化学 分析化学
- 频谱学是一种光谱学.
背景情况:
- 传统的蜂蜜认证方法昂贵,耗时.
- 开发快速,非侵入性的技术对于生产者来说至关重要.
- 外源糖造对蜂蜜的完整性构成重大挑战.
研究的目的:
- 开发非侵入式传感器方法,用于检测英国蜂蜜中的糖造.
- 量化外源糖改剂的类型和百分比.
- 评估空间偏移拉曼光谱 (SORS) 与蜂蜜认证多变量分析相结合的可行性.
主要方法:
- 空间偏移拉曼光谱法 (SORS) 用于分析17种英国蜂蜜.
- 样品被各种度 (10-50%) 的大米和甜菜糖杂.
- 多变量数据分析,包括随机森林,PLS-DA和XGBoost,用于分类和预测.
主要成果:
- 随机森林在分类纯蜂蜜与假蜂蜜方面取得了很高的准确性 (错误分类<1%).
- 这些模型成功地确定了杂质类型 (大米,甜菜) 和含量.
- 索尔斯 (SORS) 和随机森林 (Random Forest) 表明,即使在较低的改水平 (20%) 中,纯蜂蜜和改蜂蜜样本也能明显分离.
结论:
- 空间偏移拉曼光谱 (SORS) 结合机器学习是蜂蜜认证的可行工具.
- 开发的方法是快速的,非侵入性的,适合在现场部署.
- 这项技术在整个蜂蜜供应链中为质量控制提供了潜在的应用.
相关概念视频
01:26Raman Spectroscopy Instrumentation: Overview
320
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
320
01:20Raman Spectroscopy: Overview
349
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
349