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A Novel Method Based on Multi-Molecular Infrared (MM-IR) AlexNet for Rapid Detection of Trace Harmful Substances in Flour

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Abstract

Due to the severe hazard of traces of harmful substances in flour and its massive production, pretreatment-free, rapid, and accurate determination of trace harmful substances was a practical and urgent demand in modern daily life. In this study, multi-molecular infrared (MM-IR), consisting of one-dimensional infrared (1D-IR), synchronous and asynchronous two-trace two-dimensional correlation infrared (2T-2DCOS-IR), as well as their RGB IR-image, was developed and employed to directly identify flour with diverse harmful substances. The present findings indicated that 2T-2DCOS analysis based on asynchronous pictures was better than others at identifying target substances and shedding new light on previous MM-IR-related studies. Systematical comparison of developed MM-IR-AlexNet flour models with conventional machine learning algorithms indicated that asynchronous MM-IR-AlexNet (2T-2DCOS-IR-AlexNet) had the best performance with 99.6% accuracy. Therefore, it was demonstrated that deep learning-based MM-IR could be a robust method for the direct detection of trace harmful substances in power foods.

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Data Availability

The data used in this study are available from the corresponding author upon reasonable request.

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Funding

This work is financially supported by the 2022 Shanghai Grain and Material Reserve Science and Technology Innovation Research Project.

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Contributions

Xiao-Wen Lin: conceptualization, investigation, data curation, and writing—original draft. Fei-Li Li: conceptualization, investigation, and writing—original draft. Song Wang: conceptualization, data curation, and writing—original draft. Jun Xie: conceptualization and data curation. Qian-Nan Pan: conceptualization and data curation. Ping Wang: conceptualization, supervision, and project administration. Chang-Hua Xu: conceptualization, writing—review and editing, supervision, and project administration.

Corresponding authors

Correspondence to Ping Wang or Chang-Hua Xu.

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The authors declare no competing interests.

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Xiao-Wen Lin, Fei-Li Li, and Song Wang equally contributed to this study.

Highlights

• 2T-2DCOS-IR had a higher resolution and was more suitable for model building.

• The visualized process of automatically extracting features made it more interpretable.

• The prediction of the asynchronous MM-IR-AlexNet flour model was the best.

Supplementary Information

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Supplementary file1 (DOCX 1245 KB)

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Lin, XW., Li, FL., Wang, S. et al. A Novel Method Based on Multi-Molecular Infrared (MM-IR) AlexNet for Rapid Detection of Trace Harmful Substances in Flour. Food Bioprocess Technol 16, 667–676 (2023). https://doi.org/10.1007/s11947-022-02964-4

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  • DOI: https://doi.org/10.1007/s11947-022-02964-4

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