Online SERS for in-process detection of aflatoxin in agricultural commodities

N. Stebbins; J. Schneck; S. Hülck

doi:10.1117/12.3022138

7 June 2024 Online SERS for in-process detection of aflatoxin in agricultural commodities

N. Stebbins, J. Schneck, S. Hülck

Proceedings Volume 13038, Dimensional Optical Metrology and Inspection for Practical Applications XIII; 1303807 (2024) https://doi.org/10.1117/12.3022138
Event: SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States

Abstract

Surface Enhanced Raman Spectroscopy (SERS) greatly increases signal intensity for aflatoxin B1 allowing detection of parts per billion (ppb) concentrations without sample preparation. This enhancement enables detection and quantification in real-time without laborious sample preparation and without consuming hazardous chemical solvents for extraction. Aflatoxins are produced by certain fungi that grow on many agricultural commodities, including corn, nuts, wheat, barley, and other species. Consumption of aflatoxin-contaminated foods can lead to severe health issues in both humans and livestock animals, such as liver damage, immune system suppression, and reproductive issues. The concept for online SERS is presented by tec5USA to measure a greater percentage of product than would ever be possible for collected samples and traditional laboratory analysis. A 785 nm laser is used to excite the analyte of interest: aflatoxin B1 spiked onto a SERS substrate, which allows detection in 100 ms. These rapid Raman measurements allow for online integration to measure product in the production environment.

Conference Presentation

Citation Download Citation

N. Stebbins, J. Schneck, and S. Hülck "Online SERS for in-process detection of aflatoxin in agricultural commodities", Proc. SPIE 13038, Dimensional Optical Metrology and Inspection for Practical Applications XIII, 1303807 (7 June 2024); https://doi.org/10.1117/12.3022138

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