Preprint Article Version 1 This version is not peer-reviewed

Electrical Impedance for Easily Discover Undeclared Freeze-Thaw Cycles in Slaughtered Beef Meat

Version 1 : Received: 8 May 2019 / Approved: 10 May 2019 / Online: 10 May 2019 (15:10:17 CEST)

How to cite: Dell'Osa, A.; Concu, A.; Battacone, G.; Pulina, G.; Fois, A.; Velluzzi, F.; Loviselli, A. Electrical Impedance for Easily Discover Undeclared Freeze-Thaw Cycles in Slaughtered Beef Meat. Preprints 2019, 2019050136 (doi: 10.20944/preprints201905.0136.v1). Dell'Osa, A.; Concu, A.; Battacone, G.; Pulina, G.; Fois, A.; Velluzzi, F.; Loviselli, A. Electrical Impedance for Easily Discover Undeclared Freeze-Thaw Cycles in Slaughtered Beef Meat. Preprints 2019, 2019050136 (doi: 10.20944/preprints201905.0136.v1).

Abstract

A portable, electrical impedance spectroscopy device to monitor the bioimpedance’s resistive component of beef meat by injecting a sinusoidal current of 1mA at 65.5 kHz was developed. In 4 slaughtered beef both right and left longissimus dorsi muscles where trimmed and left muscle portion was frozen to -18° C up to 7th day while right one was meantime maintained at 5° C. Median value of specific resistivity of not-frozen sample was about twice Ω cm-1 with respect of that of frozen-thawed sample (P = 0.004). It was concluded that the device is reliable to monitoring the ripening of beef meat in situ.

Subject Areas

Electrical anisotropy, Freeze-thaw cycles, Meat electrical bioimpedance, Meat ripening process, Slaughtered meat

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