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. 2024:2717:239-250.
doi: 10.1007/978-1-0716-3453-0_16.

Biosensors for the Detection of Food Allergens

Alina Vasilescu  1 , Cristina Polonschii  1 , Jean-Louis Marty  2
Affiliations

Biosensors for the Detection of Food Allergens

Alina Vasilescu et al. Methods Mol Biol. 2024.

Abstract

Biosensors enable fast and specific detection of various molecules, including allergens. Surface plasmon resonance (SPR) aptasensors combine the capabilities of SPR detection, i.e., sensitive, fast, label-free, and real-time monitoring with the specificity and stability of aptamers for the biorecognition of various ligands. Compared to other toxic compounds in food, allergens pose specific analytical challenges. Among allergens, lysozyme, also named Gal d 4, is a food additive used in cheese, wine, beer, sausages, etc., to control bacterial activity. In this chapter, we describe an SPR aptasensor that is applicable for lysozyme analysis in wines. Besides detecting residual allergen amounts, the aptasensor can be used to monitor the interaction of lysozyme with phenolic compounds in wine.

Keywords: Allergen; Aptasensor; Lysozyme; Phenolic compounds; Surface plasmon resonance; Wine.

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