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The hazardous substance Neu5Gc (N-glycolylneuraminic acid), which is rich in red meat, is related to chronic inflammation but is hard to eliminate. Here, electrical stimulation, as a food-friendly nonthermal processing technology, was applied to red meat samples to reduce the Neu5Gc content. To explore the Neu5Gc structure changes during this process, electronic structure parameters were evaluated, and AIM (atom in molecules) theory and DFT (density function theory) calculations were further used. The results showed that the content of Nue5Gc in red meat can be reduced by (74.24 ± 0.69)% at 120 V for 50 s, with little impact on the meat texture and color. Theoretical calculations indicated that the Neu5Gc molecule becomes very unstable under electrical stimulation by increasing the OH bond length, reactive activity, strength of intermolecular dipole forces and total energy through reducing the values of bond dissociation energy and strength of intramolecular hydrogen bonds. Overall, this research provides an economical method to effectively control red meat safety.


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Effect of electrical stimulation on red meat Neu5Gc content reduction: a combined experimental and DFT study

Show Author's information Aqi Xu1Rui Chang1Qiujin Zhu( )
School of Liquor and Food Engineering, Guizhou University, Key Laboratory of Agricultural and Animal Products Store and Processing of Guizhou Province, Guiyang 550025, China

1 These authors contributed equally to this work.Peer review under responsibility of KeAi Communications Co., Ltd.]]>

Abstract

The hazardous substance Neu5Gc (N-glycolylneuraminic acid), which is rich in red meat, is related to chronic inflammation but is hard to eliminate. Here, electrical stimulation, as a food-friendly nonthermal processing technology, was applied to red meat samples to reduce the Neu5Gc content. To explore the Neu5Gc structure changes during this process, electronic structure parameters were evaluated, and AIM (atom in molecules) theory and DFT (density function theory) calculations were further used. The results showed that the content of Nue5Gc in red meat can be reduced by (74.24 ± 0.69)% at 120 V for 50 s, with little impact on the meat texture and color. Theoretical calculations indicated that the Neu5Gc molecule becomes very unstable under electrical stimulation by increasing the OH bond length, reactive activity, strength of intermolecular dipole forces and total energy through reducing the values of bond dissociation energy and strength of intramolecular hydrogen bonds. Overall, this research provides an economical method to effectively control red meat safety.

Keywords: inflammation, electronic structure, density function theory, electrical stimulation, Neu5Gc

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Publication history

Received: 24 October 2020
Revised: 19 January 2021
Accepted: 11 April 2021
Published: 28 April 2022
Issue date: July 2022

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© 2022 Beijing Academy of Food Sciences. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.

Acknowledgements

The author thank to the National Natural Science Foundation of China (No. 31660496), the author thank to the High-level innovative talents training project of Guizhou province-"Hundred" level talents (QKHPTRC[2016]5662).

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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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