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Food-Grade Physically Unclonable Functions.

Abidin Esidir^1,2, Nilgun Kayaci¹, N Burak Kiremitler^1,2

¹ERNAM─Nanotechnology Research and Application Center, Erciyes University, Kayseri 38039, Turkey.

ACS Applied Materials & Interfaces

|August 24, 2023

Summary

This summary is machine-generated.

Researchers developed edible security labels using food-grade corn starch and erythrosine B. These labels offer a low-cost, sustainable solution to combat counterfeit drugs and food products.

Keywords:

corn starch edible encoding fluorescence physically unclonable function (PUF)

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Area of Science:

Materials Science
Food Science
Biotechnology

Background:

Counterfeit pharmaceuticals and food pose significant global health risks.
Current anti-counterfeiting measures often lack integration with product safety and sustainability.
Edible security labels are needed for direct application on food and drugs.

Purpose of the Study:

To fabricate novel, edible security labels using food-grade materials.
To develop a physically unclonable function (PUF) based on microparticle characteristics.
To assess the performance and biocompatibility of the developed security labels.

Main Methods:

Fabrication of fluorescent corn starch (CS) and erythrosine B (ErB) microparticles (CS@ErB).
Spin-coating of CS@ErB particles onto an edible gelatin film for random positioning.
Construction of PUF keys using optical and fluorescence microscopy of particle arrangements.
Biocompatibility assessment using murine fibroblast cell assays.

Main Results:

Successfully fabricated edible security labels from food-grade corn starch and erythrosine B.
Developed a PUF-based security system leveraging the unique random arrangement of CS@ErB microparticles.
Demonstrated high performance of PUFs through uniformity, uniqueness, and randomness analysis.
Confirmed the biocompatibility of the fabricated security labels.

Conclusions:

The developed edible security labels offer a promising, low-cost, and sustainable anti-counterfeiting solution.
This approach utilizes readily available food-grade materials for enhanced product security.
The PUF-based system provides a robust method for verifying product authenticity.