Table 1. Comparison of different methods for the detection of S. Typhimurium.

Methods	Linear range (cfu·mL-1)	LOD (cfu·mL-1)	Recognition element	Reference
DNA-assembled gold nanodimers	102−107	35	Aptamer	[25]
Microfluidic nanobiosensor	103−106	103	Polyclonal antibodies	[26]
Graphene oxide platform	103−108	100	Aptamer	[27]
F0F1-ATPase biosensor	101−104	10	Aptamer	[28]
IMS-PMA-mPCR	101−107	10	Polyclonal antibody	[29]
Immunomagnetic nanoparticle-based quantitative PCR	103−105	103	Antibody	[30]
ELISA	103−108	103	Gold nanoparticle-based enzyme-linked antibody-aptamer sandwich	[31]
Surface-enhanced Raman scattering	103−106	103	Antibody	[32]
Digital PCR	2.5×102−2.5×106	2.5×102	Specific nucleic acid	[33]
Aptamer modified magnetic nanoparticles	10−1010	1	Aptamer	This study