A Low-Cost Portable RGB Sensor Based on Nano Metal-Organic Frameworks for Food Safety

In many industries, including biomedical, diagnostics, agriculture, food safety, and others, color change detection plays a crucial role as an analytical tool. A colorimetric system identifies the color of a sample by analysing the proportions of red, green, and blue (RGB) light that is transmitted through the reagents. Quantitative analysis of color can be conducted using expensive optical devices such as webcams, smartphones, and cameras. In this study, we present the preliminary findings of a cost-effective, portable RGB sensor that utilizes nanometal-organic frameworks (nanoMOFs) to ensure food safety. It consists of eight pairs of white light-emitting diodes (LEDs), eight digital color sensors, and another eight wells for holding the samples and blanks. The viability of the RGB sensor has been proven for quantifying amines.