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The authors report on an aptamer-based electrochemical assay for the insecticide acetamiprid. It is based on the target-induced release of the redox probe Methylene Blue (MB) from the dsDNA formed between aptamer and complementary strand (Apt/CS), exonuclease I (Exo I) and silica nanoparticles coated with streptavidin (SiNP-Streptavidin). MB is detected electrochemically using an unmodified gold electrode...
The authors describe an aptamer-based fluorometric assay for the insecticide acetamiprid. It is based on target-induced release of the fluorescein-labeled complementary strand of the aptamer (CS) from the aptamer/CS conjugate (dsDNA). Three kinds of nanoparticles with opposite effects on the fluorophore (FAM) were used. These include gold nanoparticles (AuNPs), single-walled carbon nanotubes (SWNTs)...
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