Gold nanoparticle-based lateral flow strips for rapid and sensitive detection of Virginiamycin M1

Rapid Lateral Flow Test Strips

Nanoparticle-based photoacoustic analysis for highly sensitive lateral flow assays.

This paper demonstrates a photoacoustics-based lateral flow test that takes advantage of the strong interaction of light and gold nanoparticles to quantitatively detect a disease biomarker. For a commercially available lateral flow test strip, the photoacoustic analysis improved the detection limit by two orders of magnitude compared to colorimetric measurements.

A highly sensitive europium nanoparticle-based lateral flow immunoassay for detection of chloramphenicol residue.

A europium nanoparticle-based lateral flow immunoassay for highly sensitive detection of chloramphenicol residue was developed. The detection result could be either qualitatively resolved with naked eye or quantitatively analyzed with the assistance of a digital camera. In the qualitative mode, the limit of detection (LOD) was found to be 0.25 ng/mL. In the quantitative mode, the half-maximal i...

Gold nanoparticle-labeled biosensor for rapid and sensitive detection of bacterial pathogens

BACKGROUND Escherichia coli O157:H7 is one of the major foodborne bacterial pathogens and also a biodefense agent. To ensure food safety and public health, it is very important to develop rapid methods for E. coli O157:H7 detection. In this study, we designed a nanoparticle-labeled biosensor for the rapid detection of E. coli O157:H7 in broth. RESULTS Magnetic nanoparticles (MNPs) were conjug...

DNA detection on lateral flow test strips: enhanced signal sensitivity using LNA-conjugated gold nanoparticles.

A lateral flow test strip assay, enabling sensitive detection of DNA specific to the foodborne pathogen E. coli O157:H7, is described. The use of LNA-conjugated gold nanoparticle probes, along with signal amplification protocols, results in minimum detectable concentrations of ~0.4 nM.