Fluorescence spectroscopy combined with a multi-task deep learning model for rapeseed oil quality analysis
文献类型: 外文期刊
作者: Xinna Jiang;Quancheng Liu;Xingda Cao;Fan Wang;Long Li;Lei Yan;Shuxiang Fan
作者机构:
关键词: CNN;Multi-task deep learning;Quantitative analysis;Rapeseed oil;SHAP values
期刊名称: Journal of Food Composition and Analysis
ISSN: 0889-1575
年卷期: 2025 年 146 卷
页码:
收录情况: SCIE(2025版)
摘要: This study aims to develop a non-destructive, multi-task deep learning model for the simultaneous prediction of multiple rapeseed oil quality indicators based on ultraviolet fluorescence spectroscopy. A novel multi-task convolutional neural network (MT-CNN) architecture was constructed, integrating multi-head attention and residual connections to enhance feature extraction and gradient propagation. Five common spectral preprocessing techniques were evaluated, with the combination of standard normal variate (SNV) and Savitzky–Golay (SG) filtering yielding optimal results. The proposed model was further interpreted using Shapley Additive Explanations (SHAP) to identify key wavelengths contributing to the prediction of acid value, peroxide value, α-tocopherol, and polyphenols. To comprehensively evaluate modeling performance, this study compared partial least squares regression (PLSR), K-nearest neighbors (KNN), support vector regression (SVR), long short-term memory (LSTM), and convolutional neural networks (CNN) under both single-task and multi-task learning frameworks. The results demonstrated that the MTDL model consistently outperformed all other models across all indicators, achieving an average correlation coefficient (R) of 0.9639. This study represents the first successful application of fluorescence spectroscopy with a multi-task deep learning model for rapeseed oil quality detection. This approach offers a rapid, accurate approach for simultaneous multi-parameter analysis of rapeseed oil constituents.
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