High Accuracy Quantification of Aflatoxin B1 via a Compact Smart Gas Sensing System Assisted by Dual-Branch Convolutional Neural Network
Changyi Liu, Yu Guo, Qi Bao, Junqiao Li, Peipei Huang, Xiulan Sun

TL;DR
A compact smart gas sensing system with a dual-branch neural network accurately detects and quantifies aflatoxin B1 in contaminated grains, enabling real-time monitoring.
Contribution
A novel compact gas sensing system with a dual-branch CNN for real-time, non-destructive aflatoxin B1 quantification in grains.
Findings
The system achieves 100% accuracy in identifying grains infected with Fusarium graminearum and Aspergillus flavus.
The DB-CNN model shows high quantitative performance (RMSE = 1.0292 μg/kg, R2 = 0.9994) for Aflatoxin B1 detection.
The detection system supports wireless transmission and completes the process within 4 minutes.
Abstract
Mycotoxin contamination of grains during storage and transportation represents a significant threat to global food security. Conventional detection methods exhibit limitations in terms of real-time monitoring. This study presents a compact smart gas sensing system for mycotoxins, facilitating non-destructive testing of corn infected with fungi by analyzing the volatile organic compounds (VOCs) emitted during fungal growth. It also facilitates the precise quantitative detection of Aflatoxin B1 (AFB1). Additionally, a dual-branch convolutional neural network (DB-CNN) model has been developed to conduct an in-depth analysis of the temporal and spatial characteristics of VOCs signals. The system achieves 100% accuracy in identifying grains (corn, peanuts, wheat, and rice) infected with Fusarium graminearum and Aspergillus flavus by extracting the characteristic fingerprint spectra of fungal…
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Taxonomy
TopicsAdvanced Chemical Sensor Technologies · Gas Sensing Nanomaterials and Sensors · Air Quality Monitoring and Forecasting
