Electrical impedance estimation for apple fruit tissues during storage using Cole–Cole plots. (March 2018)

• Record Type: Journal Article
• Authors: Watanabe, Takashi; Ando, Yasumasa; Orikasa, Takahiro; Kasai, Satoshi; Shiina, Takeo
• Is Part Of: Journal of food engineering. Volume 221(2018)
• Page Start: 29
• Page End: 34
• Publication Date: 2018-03
• Subjects: Electrical impedance spectroscopy -- Cole-Cole plot -- Cell tissues -- Apple fruit -- Storage; Food industry and trade -- Periodicals; Food -- Analysis -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Analyse -- Périodiques; Aliments -- Recherche -- Périodiques; 664.005
• DOI: 10.1016/j.jfoodeng.2017.09.028
• Languages: English
• ISSNs: 0260-8774

Abstract

Abstract: The objective of this study was to analyze Cole-Cole plots obtained from electrical impedance measurements in apple fruits during storage. We evaluated the changes in Cole–Cole plots for five cultivars. The coordinates at the top of the circular arcs of the Cole–Cole plots were grouped for each cultivar. The anisotropy of the electrical impedance properties of fibers from these samples was examined. The length of the coordinates at the top of circular arcs of the Cole–Cole plots from the origin of samples decreased during 1–4 weeks storage due to a decline in the integrity of cell membranes. These non-uniform electrical properties were caused by variations in the cell size, which differed for each cultivar and changed during storage. We showed that Cole–Cole plots could be applied as a method to assess the integrity of the cell tissues of apples during storage. Highlights: Electrical impedance property of apple fruits was evaluated using Cole-Cole plots. Top coordinates of circular arcs of Cole-Cole plots were grouped each cultivar. Anisotropy of electrical properties to the fiber orientation was clarified. Variety discrimination and cell structure changes can be assessed by Cole-Cole plots.