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- W4200119684 abstract "A microfluidic biosensor was developed for rapid detection of Salmonella using a finger-actuated micropump, a finger-actuated micromixer, gold@platinum nanocatalysts (Au@PtNCs) and a smartphone App. First, immune magnetic nanobeads (MNBs), bacterial sample and immune Au@PtNCs were successively finger-actuated pumped into microfluidic chip. Then, they were fully mixed using finger-actuated micromixer to form MNB-Salmonella-Au@PtNC complexes. After hydrogen peroxide-tetramethylbenzidine was pumped into chip and catalyzed by nanocatalysts on complexes, resulting in color change from colorless to blue, the image of catalysate was collected and finally analyzed by self-developed smartphone App or directly compared with Pantone color card in chip to determinebacterial concentration. Experimental results showed this biosensor could quantitatively detect Salmonella from 3.5 × 102 to 3.5 × 105 CFU/mL in 1 h with lower detection limit of 350 CFU/mL. This biosensor has successfully integrated loading, mixing, incubation, washing, separation and detection onto a chip and might pave a promising way for bacterial detection." @default.
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- W4200119684 date "2022-07-01" @default.
- W4200119684 modified "2023-10-07" @default.
- W4200119684 title "A finger-actuated microfluidic biosensor for colorimetric detection of foodborne pathogens" @default.
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- W4200119684 doi "https://doi.org/10.1016/j.foodchem.2021.131801" @default.
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