2021
DOI: 10.2478/joeb-2021-0002
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Electrical impedance to easily discover undeclared freeze-thaw cycles in slaughtered bovine meat

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)… Show more

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Cited by 5 publications
(3 citation statements)
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“…4c,f show that the impedance of beef samples increased with increasing number of freeze–thaw cycles at both low and high frequencies. However, some previous studies (Wei et al ., 2017; Dell'Osa et al ., 2021) reported that the rapid formation of ice crystals during freezing damages the fibres organisation of muscles, leading to altered insulating properties of cellular membranes. This resulted in increased ion mobility and low impedance.…”
Section: Resultsmentioning
confidence: 99%
“…4c,f show that the impedance of beef samples increased with increasing number of freeze–thaw cycles at both low and high frequencies. However, some previous studies (Wei et al ., 2017; Dell'Osa et al ., 2021) reported that the rapid formation of ice crystals during freezing damages the fibres organisation of muscles, leading to altered insulating properties of cellular membranes. This resulted in increased ion mobility and low impedance.…”
Section: Resultsmentioning
confidence: 99%
“…The electrical properties of meat are dependent on frequency and closely related to other physical properties such as moisture content (Yang et al, 2013), meat freshness (Nguyen & Nguyen, 2015), and ice fraction (Ding et al, 2020). Furthermore, numerous studies have assessed the properties of fresh and frozen-thawed meat using the bioelectrical impedance method (Dell'Osa et al, 2021). The disruption of the cell membrane caused by the freezing and thawing process increases the number of free electrolytes in the tissues, thereby affecting the bioelectrical impedance characteristics of meat (Chen et al, 2016).…”
Section: Introductionmentioning
confidence: 99%
“…Electrical impedance spectroscopy has been used to monitor various agricultural products and food materials such as fruits [ 12 , 13 , 14 ], vegetables [ 15 , 16 ], meat [ 17 , 18 ], and edible oils [ 19 , 20 , 21 ]. This technique measures the electrical properties of samples as a function of a wide range of frequencies.…”
Section: Introductionmentioning
confidence: 99%