Journal of Nanomaterials / 2015 / Article / Fig 6

Research Article

Colorimetric Detection System for Salmonella typhimurium Based on Peroxidase-Like Activity of Magnetic Nanoparticles with DNA Aptamers

Figure 6

Optimization of parameters for the colorimetric system. Acetate buffer at pH 4.0 was optimal for TMB oxidation (a). MNP concentration of 400 μg/mL (b), TMB concentration of 40 μM (c), H2O2 concentration of 35 mM (d), and incubation time of 10 min (e) yielded optimal effectiveness.

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