Colorimetric aptasensor for on-site detection of acetamiprid with hybridization chain reaction-assisted amplification and smartphone readout strategy

Functional Micro-/Nanostructures in Agrofood Science: Precise Inspection, Hazard Elimination, and Potential Health Risks

“…Using amage analysis program based on a smartphone, Xu et al 95 established an instrument-free visual detection method for acetamiprid based on a hybridization chain reaction (HCR) amplification strategy. Changes in the absorption peaks were observed in the spectrum, accompanied by color changes, from pinkish purplish to blue-purple.…”

“…Schematic illustration of HCR amplified colorimetric/visual aptasensor for acetamiprid detection. Reprinted with permission from ref . Copyright 2022 Elsevier.…”

Bio-Tailored Sensing at the Nanoscale: Biochemical Aspects and Applications

“…Such an easy, simple method based on naked-eye colorimetric detection opens up many other possibilities as reflected by several similar examples published, e.g., AuNPs coated with unfunctionalized polyadenine aptamers to detect prostate specific antigen in serum [ 93 ]; AuNPs coated with unfunctionalized truncated forms of aptamers to detect bisphenol A in food and water [ 94 ]; AuNPs coated with unfunctionalized aptamers to detect chloramphenicol and tetracycline in food [ 95 ]; AuNPs coated with unfunctionalized aptamers for detection of Bacillus carboniphilus on bacterial biofilms [ 96 ]; AuNPs coated with unfunctionalized RNA aptamers for detection of human papillomavirus type 16 L1 in clinical and vaccine samples [ 97 ]; and AuNPs coated with unfunctionalized aptamers to detect acetamiprid in food and water [ 98 ].…”

Dual-mode sensor based on the synergy of magnetic separation and functionalized probes for the ultrasensitive detection of Clostridium perfringens

“…15 Although electrochemical sensors have the advantages of high sensitivity and low detection limit, their development is greatly hindered by stability and accuracy requirements. 12,16,17 And the accuracy of the sensor detection platform that relies on a single signal cannot be guaranteed, while two independent signal transduction from different mechanisms can calibrate the system error and mutually verify the dual response. Therefore, dual-mode sensors are gradually favored by researchers.…”

“…Electrochemical DNA biosensors have played a considerable role in the specific detection of target DNA because of their rapid response, convenient operation, and high sensitivity. 11,12 They have been used in many studies about foodborne pathogens. Electrochemical sensors based on silica magnetic particles have been investigated to detect various pathogens, including Salmonella .…”