AuNPs-Based Colorimetric Assay for Identification of Chicken Tissues in Meat and Meat Products

Figure 1

(a) PCR products were analyzed by 2% agarose gel electrophoresis. Lane M: 100 bp ladder, 0, 1, 2, and 3 represent PCR products from chicken, cattle, pork, and sheep, respectively. (b) Specificity evaluation of colorimetric assay by spectra analysis and the naked eye. A, B, C, and D represent the result of colorimetric assay for chicken, cattle, pork, and sheep, respectively. (c) Particle size distribution after adding target PCR products. (d) Particle size distribution after adding nontarget PCR products.

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