Abstract
Biogenic amines are the important markers for food spoilage, thus, an on-package sensor for biogenic amine detection is crucial for food quality control. A dual detection platform including colorimetry and LDI-MS was developed for screening and quantitative determining of biogenic amines. Porous PLA film, was fabricated using calcium carbonate nanoparticles to enhance film porosity leading to increased surface area of colorimetric sensor. The color intensity significantly increases depending upon the enhanced analyte concentration with a linear range of 2.0–10.0 mg/mL for putrescine, and 0.1–6.0 mg/mL for cadaverine. On another layer, graphene oxide paper was applied as an LDI-MS substrate for sensitive quantification of biogenic amines. LOD values measured on graphene oxide coated side by LDI-MS were found to be 0.07 pM and 0.02 pM for putrescine and cadaverine, respectively. This platform was successfully applied for the detection of biogenic amines in pork samples with satisfactory results.
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