Milk Characterization Using Electrical Impedance Spectroscopy and Fractional Models

Lopes, António M.; Machado, J. A. Tenreiro; Ramalho, Elisa; Silva, Vânia

doi:10.1007/s12161-017-1054-4

Cited by 42 publications

(20 citation statements)

References 68 publications

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“…The acidity of milk affects the protein coagulation thereby releasing mineral salts to the colloidal phase. The electrical behavior of milk increase or decrease in dissolved ionic content in the serum depending upon formation or dissolution of protein particles [14].…”

Section: Resultsmentioning

confidence: 99%

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Mathematical models for correlating electrical parameters and milk adulterants

Nascimento

Lima

Anjos

et al. 2020

QUARKS

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This work presents mathematical models obtained from electrical measurements to control of milk quality and detection of adulterations, especially by ethanol, sodium chloride and sodium bicarbonate. These substances may cause changes in the electrical properties of raw milk. Electrical measurements are non-destructive and fast techniques. The proposed models correlate the addition of the mentioned substances with measurements of conductance and phase angle at a fixed frequency of 100 Hz. Linear models were proposed from the data and the independence, normality, lack of adjustment and homoscedasticity were verified. The detection limits obtained based on conductance were 0.01 %, 0.03 g/L and 2.1 g/L for samples adulterated with ethanol, sodium chloride and sodium bicarbonate, respectively. The limits for measurements based on the phase angle were 0.4%, 1.3 g/L and 16.4 g/L, respectively. The results demonstrated that the proposed models may be a powerful tool to improve milk analysis methodologies.

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Section: Resultsmentioning

confidence: 99%

“…However, the methods are often laborious, slow and expensive. In this context, mathematical models based on electrical measurements appear as an good alternative [14]. From an electrical point of view, milk can be understood as an electrolyte solution in which the charge transporters originate from the dissociation of salts.…”

Section: Introductionmentioning

confidence: 99%

Mathematical models for correlating electrical parameters and milk adulterants

Nascimento

Lima

Anjos

et al. 2020

QUARKS

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“…Measurement of the electrical properties of various agricultural products and foods is used to determine different parameters, mainly the moisture content, and also chemical components, the germinability of seeds and grains, and the resistance of fruits to frost [ 12 , 13 ]. Through the use of electrical resistance or conductance, RF capacitance measurements for dielectric heating parameter determination and microwave measurements of dielectric properties for quality sensing, e.g., of fruits, vegetable or milk, have been studied for many years [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical and Sensory Profiles of Enriched Linz Biscuits

Hlaváčová

Ivanišová

Harangozo

et al. 2021

Foods

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The aim of the present study was to determine the physico-chemical properties (dry matter content, combustion heat, electrical properties, total protein, ash, fat and crude fibre contents, selected amino acids, and trace elements), antioxidant content, and sensory profile of Linz biscuits. They were enriched by the addition of powdered carrot, nettle leaves and elderberry fruit, which is 3% of the product. For comparison of results, a control variant without the addition of these components was also prepared. The enriched biscuits showed slightly higher total ash and crude fibre contents in comparison to the control samples. Results for the antioxidant activity and total polyphenol, flavonoid, and phenolic acid contents of the enriched biscuits were higher in all observed parameters than in the control sample with the best results obtained for Linz biscuits enriched with elderberry and nettle powder. In enriched biscuits, higher contents of iron, zinc, and manganese were measured, especially in biscuits with nettle. Linz biscuits with nettle had higher combustion heat values than control samples; the other two sample types had lower values. We found that the resistance, capacitance, and relative permittivity of the enriched biscuits decreased with frequency according to the power regression function. On the contrary, the conductivity increased with an increasing frequency. Electrical properties were mainly influenced by the water content but also by added components.

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“… [26] presents the principles of fractional-order modeling for dynamic processes by using electrochemical impedance spectroscopy (EIS). EIS also has been applied for analyzing and modeling fractional-order systems, such as analyzing complex physical and chemical processes occurring within electrochemical systems [27] as well as characterization of materials [28] , [29] . An EIS inspired empirical FOM for lithium-ion batteries is proposed in [30] .…”

Section: Introductionmentioning

confidence: 99%

Fractional-order modeling of lithium-ion batteries using additive noise assisted modeling and correlative information criterion

Podlubný

et al. 2020

Journal of Advanced Research

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Graphical abstract The fractional-order modeling with structure identification, parameter estimation and the ability of revealing natures of battery are considered. The correlative information criterion is proposed based on the 1/ f noise assisted I/O data, which is adept in evaluating the reliability of model structure and adaptiveness of model parameters. Experimental results validate the above conclusions.

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Milk Characterization Using Electrical Impedance Spectroscopy and Fractional Models

Cited by 42 publications

References 68 publications

Mathematical models for correlating electrical parameters and milk adulterants

Mathematical models for correlating electrical parameters and milk adulterants

Physico-Chemical and Sensory Profiles of Enriched Linz Biscuits

Fractional-order modeling of lithium-ion batteries using additive noise assisted modeling and correlative information criterion

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