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Monitoring the quality degradation of shrimp during cold storage is a tough task due to the involvement of multi-biological process and the accurate kinetic model is extremely necessary to optimize the storage management. Here, the entropy weighting and global stability index (GSI) were combined to establish the model monitoring the shelf-life of Litopenaeus vannamei during storage at –23, –5, 0, 4 and 9 °C, respectively. The typically quality-related indicators including sensorial score, total aerobic count, total volatile base nitrogen, and activity of protease and polyphenol oxidase was selected to reflect the quality degradation. After systematical calculation, the weighting factors of these indicators were determined, respectively. Subsequently, the zero-order reaction model reflecting the overall quality degradation process was satisfactorily described based on GSI, in which the activation energy (Ea) and reaction rate constant (k0) were calculated to be (64.78 ± 0.75) kJ/mol and (3.47 ± 0.54) × 1011, respectively. As a consequence, the GSI model was established as following: GSI = 1 – 3.47 × 1011t × exp (–64.78 × 103/RT), with the relative error of less than 15%. Therefore, the established GSI model could be applied to monitor the quality deterioration of L. vannamei during cold storage and is helpful for distributors and consumers to determine the storing time.


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Combination of entropy weighting and global stability index provides a potential strategy for monitoring the shelf-life of Litopenaeus vannamei during cold storage

Show Author's information Defeng Xu1Peifeng Cai1Luyun Cai2Jianmeng Liao3Hui Luo1( )
School of Ocean and Tropical Medicine, Guangdong Medical University, Zhanjiang 524023, China
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
Zhanjiang Institute for Food and Drug Control, Zhanjiang 524000, China

Abstract

Monitoring the quality degradation of shrimp during cold storage is a tough task due to the involvement of multi-biological process and the accurate kinetic model is extremely necessary to optimize the storage management. Here, the entropy weighting and global stability index (GSI) were combined to establish the model monitoring the shelf-life of Litopenaeus vannamei during storage at –23, –5, 0, 4 and 9 °C, respectively. The typically quality-related indicators including sensorial score, total aerobic count, total volatile base nitrogen, and activity of protease and polyphenol oxidase was selected to reflect the quality degradation. After systematical calculation, the weighting factors of these indicators were determined, respectively. Subsequently, the zero-order reaction model reflecting the overall quality degradation process was satisfactorily described based on GSI, in which the activation energy (Ea) and reaction rate constant (k0) were calculated to be (64.78 ± 0.75) kJ/mol and (3.47 ± 0.54) × 1011, respectively. As a consequence, the GSI model was established as following: GSI = 1 – 3.47 × 1011t × exp (–64.78 × 103/RT), with the relative error of less than 15%. Therefore, the established GSI model could be applied to monitor the quality deterioration of L. vannamei during cold storage and is helpful for distributors and consumers to determine the storing time.

Keywords: cold storage, Litopenaeus vannamei, quality degradation, entropy weighting, global stability index

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Publication history

Received: 11 March 2024
Revised: 20 March 2024
Accepted: 25 March 2024
Published: 26 April 2024
Issue date: March 2024

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© Beijing Academy of Food Sciences 2024.

Acknowledgements

Acknowledgements

This study was supported by the National Natural Science Foundation of China (No. 31772048) and Natural Science Foundation of Guangdong Province (No. 2023A1515010852).

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Food Science of Animal Products published by Tsinghua University Press. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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