基于近红外光谱的PE包装蓝的可溶性固体含量建模与反向传播神经网络和部分最小方形 (BP-PLS) 算法
Ya Chen1, Yaoxiang Li1, Roger A Williams2
1College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, China.
Journal of food science
|September 27, 2023
概括
近红外 (NIR) 谱学与反向传播 (BP) 神经网络和部分最小方形 (PLS) 算法 (BP-PLS) 结合,提供了一种快速,非破坏性的方法来确定包装蓝中的可溶性固体含量 (SSC). 这种先进的技术提高了整个蓝供应链质量控制的准确性.
科学领域:
- 农业科学 农业科学
- 频谱学是一种光谱学.
- 数据科学数据科学数据科学
背景情况:
- 蓝的质量属性,如溶性固体含量 (SSC),在整个供应链中发生变化.
- 准确和快速的质量评估对于尽量减少收获后损失和满足市场需求至关重要.
- 现有的近红外 (NIR) 光谱研究通常使用未包装的样本,限制了对现实世界供应链条件的适用性.
研究的目的:
- 开发一种使用NIR光谱的快速,非破坏性的方法来评估聚乙烯 (PE) 包装蓝的SSC.
- 为了比较NIR模型对未包装和PE包装蓝的预测性能.
- 通过减轻包装材料的干扰,提高PE包装蓝SSC预测的准确性.
主要方法:
- 近红外 (NIR) 谱学被用于蓝中SSC的定量分析.
- 光谱预处理技术包括多倍散射校正,标准正常变量,萨维茨基-戈莱和规范化.
- 波长优化利用了非信息变量消除,竞争性适应性重权采样和代保留信息变量.
- 部分最小平方 (PLS) 回归被用来构建初始的SSC预测模型.
- 开发了一种混合BP-PLS算法,结合了后传神经网络和基于残留学习的PLS,以解决包装干扰.
主要成果:
- 对未包装蓝的PLS模型实现了高预测准确性 (RP2 = 0.953,RMSEP = 0.611).
- 由于包装效应,PE包装蓝的初始PLS模型显示精度降低 (RP2 = 0.876,RMSEP = 0.632).
- 开发的BP-PLS模型显著提高了PE包装蓝的SSC预测准确度 (RP2=0.947,RMSEP=0.414).
结论:
- 与NIR光谱学相结合的BP-PLS方法提供了一个非常准确和快速的方法来确定PE包装蓝的SSC.
- 这种技术对于在供应链的各个阶段,从收获到销售,对蓝的质量监测有价值.
- 该研究展示了一种有希望的非破坏性实时质量评估方法,有助于满足市场需求和减少损失.
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