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Color-Sensitive Sensor Array Combined with Machine Learning for Non-Destructive Detection of AFB 1 in Corn Silage

Author

Listed:
  • Daqian Wan

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Haiqing Tian

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Lina Guo

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Kai Zhao

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Yang Yu

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Xinglu Zheng

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Haijun Li

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

  • Jianying Sun

    (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China)

Abstract

Aflatoxin B 1 (AFB 1 ) contamination in corn silage poses significant risks to livestock and human health. This study developed a non-destructive detection method for AFB 1 using color-sensitive arrays (CSAs). Twenty self-developed CSAs were employed to react with samples, with reflectance spectra collected using a portable spectrometer. Spectral data were optimized through seven preprocessing methods, including Standard Normal Variate (SNV), Multiplicative Scatter Correction (MSC), first-order derivative (1st D), second-order derivative (2nd D), wavelet denoising, and their combinations. Key variables were selected using five feature selection algorithms: Competitive Adaptive Reweighted Sampling (CARS), Principal Component Analysis (PCA), Random Forest (RF), Uninformative Variable Elimination (UVE), and eXtreme Gradient Boosting (XGBoost). Five machine learning models were constructed: Light Gradient Boosting Machine (LightGBM), XGBoost, Support Vector Regression (SVR), RF, and K-Nearest Neighbor (KNN). The results demonstrated significant AFB 1 -responsive characteristics in three dyes: (2,3,7,8,12,13,17,18-octaethylporphynato)chloromanganese(III) (Mn(OEP)Cl), Bromocresol Green, and Cresol Red. The combined 1st D-PCA-KNN model showed optimal prediction performance, with determination coefficient ( R p 2 = 0.87), root mean square error ( RMSEP = 0.057), and relative prediction deviation ( RPD = 2.773). This method provides an efficient solution for silage AFB 1 monitoring.

Suggested Citation

  • Daqian Wan & Haiqing Tian & Lina Guo & Kai Zhao & Yang Yu & Xinglu Zheng & Haijun Li & Jianying Sun, 2025. "Color-Sensitive Sensor Array Combined with Machine Learning for Non-Destructive Detection of AFB 1 in Corn Silage," Agriculture, MDPI, vol. 15(14), pages 1-25, July.
  • Handle: RePEc:gam:jagris:v:15:y:2025:i:14:p:1507-:d:1700703
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    References listed on IDEAS

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    1. Lina Guo & Haiqing Tian & Daqian Wan & Yang Yu & Kai Zhao & Xinglu Zheng & Haijun Li & Jianying Sun, 2025. "Detection of Aflatoxin B1 in Maize Silage Based on Hyperspectral Imaging Technology," Agriculture, MDPI, vol. 15(10), pages 1-23, May.
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