Optimization of a silver-nanoprism conjugated with 3,3′,5,5′-tetramethylbenzidine towards easy-to-make colorimetric analysis of acetaldehyde: a new platform towards rapid analysis of carcinogenic agents and environmental technology

Abstract

Acetaldehyde acts as an important mediator in the metabolism of plants and animals; however, its abnormal level can cause problems in biological processes.

Identification of acetaldehyde based on plasmonic patterns of a gold nanostructure conjugated with chromophore and H2O2: a new platform for the rapid and low-cost analysis of carcinogenic agents by colorimetric affordable test strip (CATS)

“…Optical analysis was examined using a UV-visible spectrophotometer Shimadzu UV-1800 with 1 nm resolution. 27 …”

“…The OD-mPCD was constructed using a novel method aimed at generating a useable color response from samples in a costeffective and user-friendly manner. According to our previous publications, 27,29,32 berglass papers were immersed in molten paraffin for 30 seconds, followed by removal and allowing the paraffin to dry on the paper for 1 minute. Subsequently, the paraffin-free paper was placed beneath the paraffin-coated paper on the surface of a robust magnet.…”

Optical dِِِِiscrimination of histamine and ethylenediamine in meat samples using a colorimetric affordable test strip (CATS): introducing a novel lab-on paper sensing strategy for low-cost ensuring food safety by rapid and accurate monitoring of biogenic amines

“…Nanoparticle characterization and stability was done according to our previous work. [30][31][32] Briey, several techniques, including UV-vis spectroscopy, DLS, zeta potential, SEM, TEM, and AFM, were used to characterize the suggested sensing probes. One of the simplest ways to recognize metal nanoparticles and one that is frequently used to determine their size and shape is UV-vis.…”

“…28 Also, AgNPs have strong properties of surface plasmon resonance according to the shape, which can be adjusted by changing the thickness, edge length and morphology of the tip of the nanoplate. [29][30][31] The current study introduces a novel and highly sensitive colorimetric tool for the detection of HIS and ethylenediamine (EDA) in raw beef, utilizing triangular silver nano-prism (AgNPrs) as diagnostic probes. The technique depends on detecting the alteration in color and absorption spectrum caused by the interplay of the sensing probes with the ions generated from the gases, showcasing the method's capability to specically detect the target amines.…”

“…28 Also, AgNPs have strong properties of surface plasmon resonance according to the shape, which can be adjusted by changing the thickness, edge length and morphology of the tip of the nanoplate. 29–31…”