Multiplex Detection of Biogenic Amines for Meat Freshness Monitoring Using Nanoplasmonic Colorimetric Sensor Array

Biogenic amines (BAs) were presented as significant markers for the evaluation of spoilage meat and products. In this work, a colorimetric sensor array was developed discrimination detection spermine (SP), spermidine (SD), histamine (HS), tryptamine (TP) important BAs in food assessment. For aim, two spherical plasmonic nanoparticles, namely gold nanoparticles (AuNPs) silver (AgNPs), utilized sensing elements probes. The cross-reactive interaction target biogenic caused aggregation-induced UV–Vis spectra changes, which accompanied by visual color variation solution. collected responses analyzed principal component analysis-linear analysis (PCA-LDA) to classify four BAs. This can also discriminate between individual their mixture accurately. Partial least squares regression (PLS-R) quantitative wide linear concentration ranges 0.1–10.0 µM desirable figures merits (FOMs) showed potential Finally, practical ability probe studied determination samples, successfully proved sample.