Simultaneous analysis of multiple adulterants in milk using microfluidic paper-based analytical devices

Abstract

This study reports the simultaneous colorimetric detection of urea, H2O2, and pH in milk samples using microfluidic paper-based analytical devices (µPADs) fabricated through a craft cutter printer. Paper-based devices were...

Paper based microfluidic devices: a review of fabrication techniques and applications

“…The reaction zone will turn orange, bluish chocolate, and brown depending on the presence of boric acid, maltodextrin, and . A PAD the concurrent calorimetric measurement of urea, , and pH was published by Guinati et al [ 195 ]. To ensure that the paper was completely cut without any surface damage, the EVA-coated polyester Gazela laminator model was used to laminate the paper at .…”

“…The reaction zone will turn orange, bluish chocolate, and brown depending on the presence of boric acid, maltodextrin, and H 2 O 2 . A μPAD the concurrent calorimetric measurement of urea, H 2 O 2 , and pH was published by Guinati et al [195]. To ensure that the paper was completely cut without any surface damage, the EVA-coated polyester Gazela laminator model was used to laminate the paper at 140 • C. Then a layout of the 'PAD' was created to be cut out using a craft cutter printer, which can produce gadgets quickly, cheaply, and with a minimum amount of technical equipment.…”

“…Antibody screening tool that shows whether a patient has a contagious disease infection and an immune reaction to it [196] Medical diagnosis Devices used to identify uropathogenic E. coli rely on the ability to detect nitrite, which is produced when E. coli reduces nitrate. [197] Food quality control Pesticide detection sensor made of paper for crop samples [198] Food quality control 3D PAD for identifying the milk allergen casein [199] Food quality control Colorimetric PAD to detect Salmonella [200] Medical diagnosis A pop-up, DNA-based, label-free ePAD for HBV (a biomarker of liver disorders) detection [201] Medical diagnosis A vertical flow-based paper sandwich-type immunosensor for sensing of influenza H1N1 viruses [202] Food quality control Instrument to measure aluminium in water without pre-treatment or pre-concentration of the sample [203] Medical diagnosis PAD for detection of malaria [204] Medical diagnosis Device for medical diagnosis and sweat analysis that simultaneously measures glucose, lactate, pH, chloride, and volume [205] Medical diagnosis Platform for electrochemical immunosensing for pmol/L Ebola virus detection [206] Medical diagnosis Human chorionic gonadotropin (a pregnancy indicator) detection via a PAD [207] Medical diagnosis PAD to immobilize different antibodies or anti-immunoglobulin E onto screen-printed carbon electrodes [208] Medical diagnosis PAD for COVID-19 diagnosis [209][210][211] Medical diagnosis Biosensor for POC sensing of dengue virus [212] Food quality control PAD to track total ammonia in fish pond water [213] Medical Diagnosis Electrochemical and self-powered paper-based device for glucose sensing [214,215] Medical diagnosis PAD for eliminating the necessity for a micropipette in quantitative analysis [216] Medical diagnosis PAD to extract blood plasma from a whole blood sample [138] Medical diagnosis A disposable ePAD for quantification of albumin in a urine sample [217] Food quality control 3D PAD to simultaneously detect multiple chemical adulterants in milk [195,218] Medical diagnosis An intelligent paper-based UV monitor that can detect the solar UV intensity in real time for human health and safety…”

Office paper and laser printing: a versatile and affordable approach for fabricating paper-based analytical devices with multimodal detection capabilities

“…Some examples include pen-on-paper strategies, 43,44 stamping, 45,46 spraying, 47 3D printing, 48 laser cutting, 49 printing cutting, 50 screen-printing, 51 die-cutting, 52 embossing, 53 thermal transfer printing, 54 or laser printing. 55,56 Laser printing has been used to develop microfluidic devices since 2003 when do Lago and coworkers proposed using a laser printer to deposit toner layers on a polyester surface.…”

Metodologias analíticas alternativas para a avaliação de autenticidade de alimentos explorando análises hiperespectrais e fotometria por imagens digitais

“…Amelin et al (2021) desenvolveram um procedimento para determinar resíduos de antibióticos em leite, explorando o fenômeno de fluorescência e a aquisição de imagens digitais. Guinati et al (2021) propuseram uma estratégia baseada em plataformas de papel que visavam a determinação de pH de amostras de leite, além de ureia e peróxido de hidrogênio, associadas às imagens digitais adquiridas com um scanner.…”