Table 5.

Clusters of the main keywords obtained on bibliometric software.

Cluster	Main Keywords	Keywords on Bibliometrix Software
1	5	Fish freshness, amperometric biosensor, xanthine, hypoxanthine, meat freshness.
2	12	Aptamer, electrochemical biosensor, electrochemical sensor, detection, immunosensor, biogenic amines, gold nanoparticles, electrochemical, screen-printed electrode, histamine, aptasensor, dna biosensor.
3	26	biosensor, food safety, food analysis, food, sensors, food quality, nanotechnology, pesticides, nanomaterials, nanoparticles, milk, carbon nanotubes, mycoToxins, bacteria, quality control, amperometry, foodborne pathogens, immobilization, immunoassay, meat, optical biosensor, point-of-care, polyphenols, enzyme, microfluidics, wine.
4	4	Food packaging, intelligent packaging, active packaging, smart packaging.
5	3	Electronic nose, electronic tongue, sensor arrays.