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  • Title: Lateral Flow Immunoassay to Detect the Addition of Beef, Pork, Lamb, and Horse Muscles in Raw Meat Mixtures and Finished Meat Products.
    Author: Zvereva EA, Popravko DS, Hendrickson OD, Vostrikova NL, Chernukha IM, Dzantiev BB, Zherdev AV.
    Journal: Foods; 2020 Nov 13; 9(11):. PubMed ID: 33203004.
    Abstract:
    A lateral flow immunoassay for sensitive detection of skeletal troponin I (TnI) as a specific, thermostable marker of muscle tissue was developed. Due to the antibodies' choice, the assay specifically detects mammalian TnI (in beef, pork, lamb, and horse) but does not detect bird TnI (in chicken or turkey), thus enabling differentiation of these types of raw meat materials. The assay is based on a sandwich format of the analysis using gold nanoparticles as labels. The time of the assay is 15 min, and the TnI detection limit is 25 ng/mL. A buffer solution is proposed for efficient extraction of TnI from muscle tissues and from finished meat products that have undergone technological processing (smoking-cooking-smoking, cooking and smoking). The possibility of detecting beef addition in minced chicken down to 1% was demonstrated.
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