Feasibility of Using Electrical Impedance Spectroscopy for Assessing Biological Cell Damage during Freezing and Thawing. 2021

Sisay Mebre Abie, and Ørjan Grøttem Martinsen, and Bjørg Egelandsdal, and Jie Hou, and Frøydis Bjerke, and Alex Mason, and Daniel Münch
Department of Physics, University of Oslo, 0316 Oslo, Norway.

This study was performed to test bioimpedance as a tool to detect the effect of different thawing methods on meat quality to aid in the eventual creation of an electric impedance-based food quality monitoring system. The electric impedance was measured for fresh pork, thawed pork, and during quick and slow thawing. A clear difference was observed between fresh and thawed samples for both impedance parameters. Impedance was different between the fresh and the frozen-thawed samples, but there were no impedance differences between frozen-thawed samples and the ones that were frozen-thawed and then stored at +3 °C for an additional 16 h after thawing. The phase angle was also different between fresh and the frozen-thawed samples. At high frequency, there were small, but clear phase angle differences between frozen-thawed samples and the samples that were frozen-thawed and subsequently stored for more than 16 h at +3 °C. Furthermore, the deep learning model LSTM-RNN (long short-term memory recurrent neural network) was found to be a promising way to classify the different methods of thawing.

UI MeSH Term Description Entries
D008460 Meat The edible portions of any animal used for food including cattle, swine, goats/sheep, poultry, fish, shellfish, and game. Meats
D005240 Feasibility Studies Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project. Feasibility Study,Studies, Feasibility,Study, Feasibility
D005615 Freezing Liquids transforming into solids by the removal of heat. Melting
D058266 Dielectric Spectroscopy A technique of measuring the dielectric properties of materials, which vary over a range of frequencies depending on the physical properties of the material. The technique involves measuring, over a range of frequencies, ELECTRICAL IMPEDANCE and phase shift of an electric field as it passes through the material. Electrochemical Impedance Spectroscopy,Impedance Spectroscopy,Electrochemical Impedance Spectroscopies,Impedance Spectroscopies,Impedance Spectroscopies, Electrochemical,Impedance Spectroscopy, Electrochemical,Spectroscopies, Electrochemical Impedance,Spectroscopies, Impedance,Spectroscopy, Dielectric,Spectroscopy, Electrochemical Impedance,Spectroscopy, Impedance
D063427 Food Quality Ratings of the characteristics of food including flavor, appearance, nutritional content, and the amount of microbial and chemical contamination. Food Qualities,Qualities, Food,Quality, Food

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