Abstract
The relationship between electrical properties and tissue structure of cut apples whose tissue state was changed by vacuum impregnation treatment was investigated. X-ray micro-CT observation showed that the porosity of the sample decreased as the pressure was set lower during the same time vacuum impregnation treatment using distilled water. In electrical impedance spectroscopy, the extracellular resistance was smaller, and the cell membrane capacitance (Cm) was larger at lower pressures. These changes correlated with the porosity change. In the vacuum impregnation treatment using sucrose solution, Cm decreased with increasing sucrose concentration. Therefore, it is suggested that the swelling pressure of the cell membrane changes with the osmotic pressure change of the impregnation solution, which affects the electrical properties.
https://ror.org/024exxj48 
