Electrical impedance to easily discover undeclared freeze-thaw cycles in slaughtered bovine meat

Author:

Dell’Osa A. H.1,Battacone G.2,Pulina G.2,Fois A.3,Tocco F.4,Loviselli A.4,Concu A.5,Velluzzi F.4

Affiliation:

1. Instituto de Desarrollo Económico e Innovación , Universidad Nacional de Tierra del Fuego , Ushuaia , Argentina

2. Department of Agricultural Science , University of Sassari , Sassari , Italy

3. Nomadyca Ltd , Kampala , Uganda

4. Department of Medical Sciences and Public Health , University of Cagliari , Cagliari , Italy

5. 2C Technologies Ltd, Academic Spin-Off , University of Cagliari , Cagliari , Italy

Abstract

Abstract A portable electrical impedance spectroscopy device was developed to monitor the bioimpedance resistive component of bovine meat by injecting a sinusoidal current of 1 mA at 65 kHz. Both right and left longissimus dorsi muscles were trimmed from 4 slaughtered cows. The left muscle portions were frozen to −18 °C for 7 days while the right ones were meantime maintained at 5 °C. Mean value of impedance per length (Ω/cm) of frozen and thawed left samples was 31% lower than that of right non-frozen one (P = 0.0001). It was concluded that the device is reliable for monitoring the maturation of beef meat in situ with the possibility of revealing undeclared freeze-thaw cycles.

Publisher

Walter de Gruyter GmbH

Subject

Biomedical Engineering,Biophysics

Reference34 articles.

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5. Dell’Osa AH, Battacone G, Pulina G, Fois A, Concu A, Kalb A, Melis S, Tocco F, Loviselli A, Velluzzi F. Bio-electrical impedance device for remote control of an indirect index of mechanical tenderness in ripening beef meat. Int. J. Mechanics and Control. 2020;21:139–146.

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