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Type: Trabalho de Conclusão de Curso
Title: Electrical characterization of milk samples by electrical impedance spectroscopy (EIS)
Author: Lima, Lárissa Kellen Ribeiro de
First Advisor: Nascimento, Wesley William Gonçalves
Referee Member: Nascimento, Andreia Peraro do
Referee Member: Sequetto, Priscila Lima
Resumo: ---
Abstract: This work presents a study of electrical impedance spectroscopy (EIS) as an alternative to characterize milk, aiming to develop an analysis methodology with advantages over other methods, such as portability and low cost. The behavior of the electrical impedance module, the real part and the imaginary part (reactance), and the derived quantities such as admittance, phase and diffusion coefficient (D) were also analyzed and will be discussed. Comparisons of the measured spectra with theoretical models of equivalent circuits were carried out in order to understand the electrical behavior of the samples. Understanding this electrical phenomenon will help in the development of future analysis methodologies. The results indicated that milk is a solution with predominantly resistive behavior with an estimated resistance value of 500 Ohms, with low storage load due to low viscosity. The best-fitting equivalent circuit was a mixed RC model consisting of a series resistor coupled with a resistor in parallel with a capacitor.
Keywords: Development of methodology
Electrical impedance spectroscopy
Materials characterization
Technologic innovation
Language: eng
Country: Brasil
Publisher: Universidade Federal de Juiz de Fora - Campus Avançado de Governador Valadares
Institution Initials: UFJF/GV
Department: ICV - Instituto de Ciências da Vida
Access Type: Acesso Aberto
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Issue Date: 9-Sep-2021
Appears in Collections:Farmácia - Campus GV

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