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ORIGINAL RESEARCH article

Front. Sustain. Food Syst.
Sec. Agro-Food Safety
Volume 8 - 2024 | doi: 10.3389/fsufs.2024.1454020
This article is part of the Research Topic Rapid Screening for Organic Pollutants Analysis in Food View all 5 articles

Hyperspectral imaging combined with deep learning models for the prediction of geographical origin and fungal contamination in millet

Provisionally accepted
Saimei Nie Saimei Nie 1,2Wenbin Gao Wenbin Gao 3Shasha Liu Shasha Liu 2*Mo Li Mo Li 3Tao Li Tao Li 3Jing Ren Jing Ren 3Siyao Ren Siyao Ren 3Jian Wang Jian Wang 3*
  • 1 Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
  • 2 College of Science and Technology, Hebei Agricultural University, Baoding, China
  • 3 College of Life Sciences, Cangzhou Normal University, Cangzhou, Hebei, China

The final, formatted version of the article will be published soon.

    Millet is one of the major coarse grain crops in China. Its geographical origin and Fusarium fungal contamination with ergosterol and deoxynivalenol have a direct impact on food quality, so the rapid prediction of the geographical origins and fungal toxin contamination is essential for protecting market fairness and consumer rights. In this study, 600 millet samples were collected from twelve production areas in China, and traditional algorithms such as random forest (RF) and support vector machine (SVM) were selected to compare with the deep learning models for the prediction of millet geographical origin and toxin content. This paper firstly develops a deep learning model (wavelet transformation-attention mechanism long short-term memory, WT-ALSTM) by combining hyperspectral imaging to achieve the best prediction effect, the wavelet transformation algorithm effectively eliminates noise in the spectral data, while the attention mechanism module improves the interpretability of the prediction model by selecting spectral feature bands. The integrated model (WT-ALSTM) based on selected feature bands achieves optimal prediction of millet origin, with its accuracy exceeding 99% on both the training and prediction datasets. Meanwhile, it achieves optimal prediction of ergosterol and deoxynivalenol content, with the coefficient of determination values exceeding 0.95 and residual predictive deviation values reaching 3.58 and 3.38 respectively, demonstrating excellent model performance. The above results suggest that the combination of hyperspectral imaging with a deep learning model has great potential for rapid quality assessment of millet. This study provides new technical references for developing portable and rapid hyperspectral imaging inspection technology for on-site assessment of agricultural product quality in the future.

    Keywords: Millet, hyperspectral imaging, Deep learning model, geographical origin, fungal contamination

    Received: 24 Jun 2024; Accepted: 30 Aug 2024.

    Copyright: © 2024 Nie, Gao, Liu, Li, Li, Ren, Ren and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence:
    Shasha Liu, College of Science and Technology, Hebei Agricultural University, Baoding, China
    Jian Wang, College of Life Sciences, Cangzhou Normal University, Cangzhou, Hebei, China

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