A dual-color fluorescent biosensing platform based on amine functionalized 3D copper Prussian blue nanocubes and exonuclease I activity for simultaneous detection of kanamycin and streptomycin

Abstract

A dual fluorescent oligosensor was fabricated to detect kanamycin (KAN), and streptomycin (STR). Complementary DNA oligomers with a carboxyl group (COOH-CDNAs) were attached on amine-functionalized copper Prussian blue nanocube (NH2-CuPBNC)...

Robust and ultrasensitive electrochemical detection of ochratoxin a using a highly reactive DNAzyme wired via primer exchange reaction

“…Currently, there are numerous commonly utilized strategies for OTA detection, such as high-performance liquid chromatography (HPLC), 5,6 gas chromatography (GC), 7,8 thin layer chromatography (TLC) 9 and mass spectrometry (MS). 10 The detection methods mentioned above can accurately examine OTA both quantitatively and qualitatively.…”

Construction of a three-mode sensor based on gold nanoparticles and carbon quantum dots as probes for the detection of thiosemicarbazone

“…35 For example, Panneerselvam Perumal et al constructed a sensing platform for the simultaneous detection of kanamycin and streptomycin, providing a good idea for the detection of antibiotics in food. 36 The simultaneous output of multiple signals, such as colorimetric and FL, can avoid potential uctuations in measurement results. 37 For example, Rijun Gui et al proposed a colorimetric and FL visualization dual-channel ratiometric method for detecting the fungicide cymoxanil (CYM) based on a mixture of double-emission carbon points and citrate-stabilized silver nanoparticles, with a wide detection range of 0.01-0.55 mM and low LOD of 2 nM, which was successfully used in the detection of CYM in natural river water, soil and plant epidermis.…”

Quantification of Neuronal Cell-Released Hydrogen Peroxide Using 3D Mesoporous Copper-Enriched Prussian Blue Microcubes Nanozymes: A Colorimetric Approach in Real Time and Anticancer Effect

“…Due to its diversity and versatility, Prussian blue (PB) has drawn much attention from researchers in recent years. Its multifaceted properties have led to extensive exploration across a range of fields, including batteries, supercapacitors, electrochemical and biosensors, hydrogen storage, and therapeutic applications. − Structurally, PB is a mixed-valence compound denoted as Fe 4 [Fe­(CN) 6 ] 3 × n H 2 O, characterized by iron atoms assuming distinct oxidation states interlinked by C–N pairs. This unique configuration confers upon PB efficient electron transport capabilities coupled with catalase (CAT) and peroxidase-like (POD) activities .…”