Smartphone-based colorimetric detection using gold nanoparticles of sibutramine in suspected food supplement products

A simple cost-effective paper-based electrochemical device for detection of adulterated sibutramine in slimming products

“…14,15 Visual detection has been reported employing either a paper-based analytical device (PAD) measuring the reaction-band length 16 or smartphone-based colorimetric detection with aggregation of gold nanoparticles. 17 Electroanalytical methods have also been reported for sibutramine detection including potentiometry 18,19 and voltammetry. 20–24…”

RGB color analysis of formaldehyde in vegetables based on DNA functionalized gold nanoparticles and triplex DNA

“…Recently, RGB color analysis attracted much attention due to its simplicity, visual inspection and being free of equipment. RGB color analysis was widely used in metal ion detection, [17][18][19][20][21] the food safety eld [22][23][24][25] and the life and health eld. [26][27][28][29] Over the last two decades, AuNPs were applied in a wide area because their color depended on the size and dispersed state.…”

“…Recently, RGB color analysis attracted much attention due to its simplicity, visual inspection and being free of equipment. RGB color analysis was widely used in metal ion detection, 17–21 the food safety field 22–25 and the life and health field. 26–29…”

Colorimetric, Naked-Eye Detection of Lysozyme in Human Urine with Gold Nanoparticles

“…In this field, CIEL*a*b* parameter quantification has most notably been employed such as by Mbambo et al in 2019 [ 35 ] who used color reproduction to create a digital color scale for the development of a salinity test for saline and estuarine water. Similar tests employing RGB colors for digital simulation on a smartphone have also been developed recently for the detection of sibutramine on food products [ 36 ].…”