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Identification of cold spots using non-destructive hyperspectral imaging technology in model food processed by coaxially induced microwave pasteurization and sterilization

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posted on 2023-05-03, 17:39 authored by Aswathi Soni, Mahmoud Al-Sarayreh, Marlon Martins dos ReisMarlon Martins dos Reis, Jeremy Smith, Kris Tong, Gale BrightwellGale Brightwell
The model food in this study known as mashed potato consisted of ribose (1.0%) and lysine (0.5%) to induce browning via Maillard reaction products. Mashed potato was processed by Coaxially Induced Microwave Pasteurization and Sterilization (CiMPAS) regime to generate an F0 of 6–8 min and analysis of the post-processed food was done in two ways, which included by measuring the color changes and using hyperspectral data acquisition. For visualizing the spectra of each tray in comparison with the control sample (raw mashed-potato), the mean spectrum (i.e., mean of region of interest) of each tray, as well as the control sample, was extracted and then fed to the fitted principal component analysis model and the results coincided with those post hoc analysis of the average reflectance values. Despite the presence of a visual difference in browning, the Lightness (L) values were not significantly (p < 0.05) different to detect a cold spot among a range of 12 processed samples. At the same time, hyperspectral imaging could identify the colder trays among the 12 samples from one batch of microwave sterilization.

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Rights statement

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Publication date

2020-06-26

Project number

  • Non revenue

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

MDPI

Journal title

Foods

ISSN

2304-8158

Citation

Soni, A., Al-Sarayreh, M., Reis, M. M., Smith, J., Tong, K., & Brightwell, G. (2020). Identification of cold spots using non-destructive hyperspectral imaging technology in model food processed by coaxially induced microwave pasteurization and sterilization. Foods, 9, 837. doi:10.3390/foods9060837

Contract number

A24898

Job code

67383

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