马皮对可见近红外光谱和模型优化可溶性固体含量确定的影响
Yi Wang1, Minjie Han1, Yingchao Xu1
1College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China. xuyingchao2005@163.com.
Analytical methods : advancing methods and applications
|July 27, 2023
概括
近红外 (NIR) 光谱学准确地预测了土豆的可溶性固体含量 (SSC),即使在皮. 将变量排序用于正常化 (VSN) 和变量组合人口分析 (VCPA-IRIV) 结合起来,可以提高预测的准确性和效率.
科学领域:
- 农业科学 农业科学
- 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:
- 准确的可溶性固体含量 (SSC) 确定对于马质量评估至关重要,特别是对于油炸产品.
- 近红外 (NIR) 光谱为定量分析提供了一种非破坏性的方法.
- 马皮的存在可能会干扰光谱学预测.
研究的目的:
- 通过NIR光谱学研究土豆皮对SSC的定量预测的影响.
- 评估预处理和可变选择方法在减轻剥皮干扰方面的有效性.
- 开发一个准确和高效的模型,用于SSC预测整个土豆.
主要方法:
- 部分最小平方回归 (PLSR) 模型是使用传输和反射NIR光谱学开发的.
- 作为一种预处理技术,采用了标准化变量分类 (VSN).
- 变量组合人口分析和信息变量的代保留 (VCPA-IRIV) 用于特征选择.
主要成果:
- 该VSN预处理方法有效地减少了皮造成的散射效应和强度漂移,实现RP = 0.85.
- VCPA-IRIV算法发现,剥离引入了无关的变量,并且它们的删除提高了模型的准确性.
- 在传输模式中,VSN-VCPA-IRIV组合算法产生了RP = 0.88和RMSEP = 0.25,与使用剥皮土豆的模型相比.
结论:
- 结合的VSN-VCPA-IRIV算法有效地减少了土豆皮对基于NIR的SSC预测的影响.
- 精确的SSC预测是可以实现的整个土豆 (带皮) 使用优化的光谱模型.
- 这种方法提高了检测效率和模型稳定性,使得完整的土豆样本能够进行准确的质量评估.
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