Aquaphotomics Monitoring of Strawberry Fruit During Cold Storage - A Comparison of Two Cooling Systems

Overview

Journal Front Nutr

Specialty Nutritional Sciences

Date 2022 Dec 26

PMID 36570127

Authors

Jelena Muncan

Sukritta Anantawittayanon

Tetsuya Furuta

Toshiya Kaneko

Roumiana Tsenkova

Affiliations

Soon will be listed here.

Abstract

The objective of this study was to use aquaphotomics and near-infrared (NIR) spectroscopy to follow the changes in strawberries during cold storage in the refrigerator with an electric field generator (supercooling fridge, SCF) and without it (control fridge, CF). The NIR spectra of strawberries stored in these refrigerators were collected over the course of 15 days using a portable mini spectrometer and their weight was measured daily. The spectral data in the region of the first overtone of water (1,300-1,600 nm) were analyzed using aquaphotomics multivariate analysis. The results showed a decrease in weight loss of strawberries, but the loss of weight was significantly lower in SCF, compared to the CF. The reduction of weight loss due to exposure to an electric field was comparable to the use of coatings. The aquaphotomics analysis showed that the NIR spectra adequately captured changes in the fruit over the storage period, and that it is possible to predict how long the fruit spent in storage, regardless of the storage type. During aquaphotomics analysis, 19 water absorbance bands were found to be consistently repeating and to have importance for the description of changes in strawberries during cold storage. These bands defined the water spectral pattern (WASP), multidimensional biomarker that was used for the description of the state and dynamics of water in strawberries during time spent in storage. Comparison of WASPs of strawberries in CF and SCF showed that exposure to an electric field leads to a delay in ripening by around 3 days. This was evidenced by the increased amount of structural, strongly bound water and vapor-like trapped water in the strawberries stored in SCF. This particular state of water in strawberries stored in SCF was related to the hardening of the strawberry skin and prevention of moisture loss, in agreement with the results of significantly decreased weight loss.

Citing Articles

An Aquaphotomics Approach for Investigation of Water-Stress-Induced Changes in Maize Plants.

Moyankova D, Stoykova P, Veleva P, Christov N, Petrova A, Atanassova S Sensors (Basel). 2023; 23(24).

PMID: 38139522 PMC: 10747378. DOI: 10.3390/s23249678.

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