Detection of Adulteration in Food Using Recurrent Neural Network with Internet of Things

Figure 3

Impedance spectrum of the FOE13 and FOE8 sensors in urea adulterated milk. FOE13 sensor is for frequency range 5 kHz to 12 kHz and FOE8 sensor for frequency range 13 kHz to 20 kHz. (a) FOE13 in 1.0 mg/ml urea adulteration; (b) FOE8 in 1.0 mg/ml urea adulteration; (c) FOE13 in 1.4 mg/ml urea adulteration; (d) FOE13 in 1.4 mg/ml urea adulteration.

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