Development of paper-based microfluidic device for the determination of nitrite in meat

Solvent‐resistant microfluidic paper‐based analytical device/spray mass spectrometry for quantitative analysis of C18‐ceramide biomarker

“…Mainly two groups of models have been introduced, where the first group contained only one reservoir for the analyte and for spray solvent, whereas the second group contained two separate reservoirs: one for deposition of analyte and another for spray solvent. Although the single reservoir pattern also continuously provides the spray zone with spray solvent, a certain part of the analyte dripped to the reservoir is likely to get stuck at the borders because of the so‐called “coffee ring” effect, which is not desirable for the analysis of samples in low concentrations 41 . To overcome this issue, double reservoir system was designed.…”

“…Although the single reservoir pattern also continuously provides the spray zone with spray solvent, a certain part of the analyte dripped to the reservoir is likely to get stuck at the borders because of the so-called "coffee ring" effect, which is not desirable for the analysis of samples in low concentrations. 41 To overcome this issue, double reservoir system was designed. In case of the double reservoir, two models have been designed.…”

Lab-on-a-chip technologies for food safety, processing, and packaging applications: a review

“…The laser deposits the material layer by layer on transparent sheets with white regions representing microfluidic channels. Printing is followed by laminating process which seals the microfluidic channels Distance between the two channels could sometimes be an issue Proteins, glucose-healthcare industry (testing kits for people living in rural regions who have limited access to hospitals and clinics) Oliverira ( 2015 ) Food dyes Gharaghani et al ( 2020 ) Finely ground pork-food safety and consumer health Xia et al ( 2016 ), Trofimchuk et al ( 2020 ) Wax screen printing The wax printing process can be explained in the following steps: first, the wax is printed on the surface of the material using the paper screen-printing method. This is followed by the melting of wax onto the paper to form hydrophobic barriers.…”

Quantitative Detection of Nitrite in Food Samples Based on Digital Image Colourimetry by Smartphone

“…[7] Thus, the determination and quantification of nitrite in food samples is of interest. To date, various analytical methods for the detection of nitrite have been developed such as colourimetry, [8] electrochemistry, [9] chemiluminescence, [10] fluorescence, [11] high-performance liquid chromatography, [12] as well as ion exchange chromatography. [13] Among these technologies, colourimetry has gained significant attention for its simplicity and efficiency.…”