Postharvest Freezing Process Assessment of the Blueberry Structure in Three Acts: Bioimpedance, Color, and Granulometry Analysis
Document Type
Article
Publication Date
7-31-2021
Publication Title
LWT - Food Science and Technology
Volume
151
First page number:
1
Last page number:
9
Abstract
The bioelectrical impedance, cell granulometry and the color of the freeze-thawed blueberries were investigated. The blueberries were subjected to freezing at −18 °C for 135 min, during this process, groups were removed to every 9 min, and stored at 4 °C until further analysis. Bioelectrical impedance, color, pH, total soluble solids and cell granulometry were measured. The characteristics of bioelectrical impedance, cell granulometry and color were analyzed by computational algorithms, which allowed extracting characteristic of blueberries during the freezing process. The results showed progressive loss of the cellular structure during freezing, this behavior was associated with the bioimpedance parameters. The cells damage also influenced color parameters, and cell granulometry. The color followed the direction toward darkness and more intense red-blue tones, which suggest the migration of pigments from the blueberry's skin towards the flesh. In conclusion, evaluation of the color and cell granulometry by computational algorithms with bioelectrical impedance provides a powerful tool for evaluating cell damage in blueberries during the freezing process.
Keywords
Blueberry properties; Computational vision; Electrical impedance spectroscopy; Freezing process; Modeling and fit
Disciplines
Life Sciences | Other Plant Sciences | Plant Sciences
Language
English
Repository Citation
Arteaga, H.,
Robleto-Martinez, E.,
Carolina de Sousa Silva, A.,
Souto, S.,
Batista, J.,
Xavier Costa, E.
(2021).
Postharvest Freezing Process Assessment of the Blueberry Structure in Three Acts: Bioimpedance, Color, and Granulometry Analysis.
LWT - Food Science and Technology, 151
1-9.
http://dx.doi.org/10.1016/j.lwt.2021.112237