P1MM.7 - Discrimination Among Different Lemon Juice Samples Using Chronoamperometry in a Microfluidic Channel
- 17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
- P-1 - Microfluidics and MEMS for Sensing
- A. Souri, H. Sardari, F. Hossein-Babaei - Electronic Materials Laboratory, Electrical Engineering Department, K. N. Toosi University of Technology, Tehran (Iran)
- 576 - 577
Food quality control has always been an issue for both the food producer and consumer. The dominant trend in analyses of fluids is miniaturization based on microfluidics concepts. Here, we demonstrate discriminating between different lemon juice samples by performing a chronoamperometry in a microfluidic channel. A droplet of lemon juice is injected into a microfluidic channel and a voltage waveform is applied on the channel from a preprogramed power supply. The temporal variations of the electric current passing through the channel is recorded, digitized and stored. The recorded data is used for defining a feature vector for each sample. Feature vectors for different samples are classified into different classes using PCA. The system is able to detect and recognize the sample type in less than 5 minutes.