The use of electrical impedance spectroscopy to assess the physiological condition of kiwifruit

Bauchot, A.D.; Harker, F. Roger; Arnold, W.M.

doi:10.1016/s0925-5214(99)00056-3

Cited by 122 publications

(86 citation statements)

References 25 publications

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“…The respective values used are indicated. Similar RC models were also used by other researchers [12,13]. Fig.…”

Section: Cole-cole Impedancementioning

confidence: 91%

“…7 shows the individual real and imaginary components of impedance of the electroporated lung sample over the frequency range 10Hz to 1MHz. [3,5,7,13,21,22] for the naïve and the electroporated lungs. Here, the imaginary part of the complex impedance of the material under study is plotted against the real part, each point being characteristic of one frequency of measurement.…”

Section: Rat Lung Tissuesmentioning

confidence: 99%

“…Electrical Impedance Spectroscopy (EIS) has been widely used to assess the condition of animal tissues, both in vivo, in vitro and ex vivo and for various other applications [2][3][4][5][6][7][8][9][10][11][12][13]. This method is useful to characterize cellular changes quantitatively [5,11,13]. The electrical impedance of a volume of tissue at a series of frequencies provides information about the cell population.…”

Section: Introductionmentioning

confidence: 99%

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Electrical impedance spectroscopy study of biological tissues

Dean

Ramanathan

Machado

et al. 2008

Journal of Electrostatics

242

154

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The objective of this study was to investigate the electrical impedance properties of rat lung and other tissues ex vivo using Electrical Impedance Spectroscopy. Rat lungs (both electroporated and naïve (untreated)), and mesenteric vessels (naïve) were harvested from male Sprague-Dawley rats; their electrical impedance were measured using a Solartron 1290 impedance analyzer. Mouse lung and heart samples (naïve) were also studied. The resistance (Real Z, ohm) and the reactance (Im Z, negative ohm)) magnitudes and hence the Cole-Cole (Real Z versus Im Z) plots are different for the electroporated lung and the naive lung. The results confirm the close relationship between the structure and the functional characteristic. These also vary for the different biological tissues studied. The impedance values were higher at low frequencies compared to those at high frequencies. This study is of practical interest for biological applications of electrical pulses, such as electroporation, whose efficacy depends on cell type and its electrical impedance characteristics.

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“…The respective values used are indicated. Similar RC models were also used by other researchers [12,13]. Fig.…”

Section: Cole-cole Impedancementioning

confidence: 91%

Section: Rat Lung Tissuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electrical impedance spectroscopy study of biological tissues

Dean

Ramanathan

Machado

et al. 2008

Journal of Electrostatics

242

154

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“…Numerous investigations have been carried out by electrical measurement to assess conditions of agricultural products such as variety (White et al, 1971), quality and freshness (Sugiyama et al , 1987;Kato, 1988), ripeness and maturity (Bauchot et al, 2000;Desai et al, 1977;Weaver et al, 1966), infection of virus (Greenham et al , 1952) and injury of tissues (Greenham, 1966;Zhang et al , 1993;Jiang et al , 2001). Effectiveness of impedance measurement has been shown in freezing and cold injury of agricultural products (Zhang et al , 1992(Zhang et al , , 1992Dejmek et al , 2002;Ohnishi et al , 2002).…”

Section: Introductionmentioning

confidence: 99%

Effect of Freezing on Electrical and Rheological Properties of Food Materials

Ohnishi

Shimiya

Kumagai

et al. 2004

FSTR

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Changes in electrical and rheological properties in freezing-thawing were measured and compared for various food materials, which could be classified into three groups. In the first group, plant tissue (vegetables and fruits) showed large and frequency-dependent impedance and clear characteristic Cole-Cole arc in their fresh state. These electrical properties drastically changed after freezing-thawing: impedance greatly decreased and the Cole-Cole arc disappeared, suggesting the serious change in the cell structure. Correspondingly, the dynamic elasticity and viscosity substantially decreased. In the second group, animal and fish meats showed the lower impedance and unclear Cole-Cole arc as compared with plant tissue, but these properties scarcely changed after freezing-thawing. Rheological properties were also unchanged reflecting the large freezing-tolerance for food materials in this group. In the third group, konnyaku (alimentary yam paste) and tofu (soyprotein curd) showed increase both in impedance and viscoelasticity after freezing-thawing reflecting the freezedenaturation of the major components.

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“…The results of these measurements may also be used for evaluating the quality and physical state of fruit during ripening and storage (Bauchot et al, 2000;Harker and Maindonald, 1994).…”

Section: Introductionmentioning

confidence: 99%

Relationship between moisture content and electrical impedance of carrot slices during drying

Kertész¹,

Hlaváčová

Vozáry³

et al. 2015

International Agrophysics

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A b s t r a c t. Electrical properties of food materials can give information about the inner structure and physiological state of biological tissues. Generally, the process of drying of fruits and vegetables is followed by weight loss. The aim of this study was to measure the impedance spectra of carrot slices during drying and to correlate impedance parameters to moisture content in different drying periods. Cylindrical slices were cut out from the carrot root along the axis. The slices were dried in a Venticell 111 air oven at 50°C. The weight of the slices was measured with a Denver SI-603 electronic analytical and precision balance. The weighing of the samples was performed every 30 min at the beginning of drying and every 60 min after the process. The moisture content of the samples was calculated on wet basis. The magnitude and phase angle of electrical impedance of the slices were measured with HP 4284A and 4285A precision LCR meters in the frequency range from 30 Hz to 1 MHz and from 75 kHz to 30 MHz, respectively, at voltage 1 V. The impedance measurement was performed after weighting. The change in the magnitude of impedance during drying showed a good correlation with the change in the moisture content.

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The use of electrical impedance spectroscopy to assess the physiological condition of kiwifruit

Cited by 122 publications

References 25 publications

Electrical impedance spectroscopy study of biological tissues

Electrical impedance spectroscopy study of biological tissues

Effect of Freezing on Electrical and Rheological Properties of Food Materials

Relationship between moisture content and electrical impedance of carrot slices during drying

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