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EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment

The effect of ultrasound treatment on molecular mobility and organization of the main components in raw goat milk was studied by EPR and NMR spectroscopies. NMR relaxation studies showed an increase in the spin-lattice T1 and spin-spin T2 relaxation times in goat milk products (cream, anhydrous fat)...

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Main Authors: Sergeev, Andrey, Motyakin, Mikhail, Barashkova, Irina, Zaborova, Victoria, Krasulya, Olga, M. Yusof, Nor Saadah
Format: Article
Published: Elsevier 2021
Subjects:
QD Chemistry
Online Access:http://eprints.um.edu.my/28290/
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spelling my.um.eprints.282902022-03-28T06:56:33Z http://eprints.um.edu.my/28290/ EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment Sergeev, Andrey Motyakin, Mikhail Barashkova, Irina Zaborova, Victoria Krasulya, Olga M. Yusof, Nor Saadah QD Chemistry The effect of ultrasound treatment on molecular mobility and organization of the main components in raw goat milk was studied by EPR and NMR spectroscopies. NMR relaxation studies showed an increase in the spin-lattice T1 and spin-spin T2 relaxation times in goat milk products (cream, anhydrous fat) and change in the diffusion of proton-containing molecules during ultrasound treatment. The diffusion became more uniform and could be rather accurately approximated by one effective diffusion coefficient D-eff, which indicates homogenization of goat milk components, dispersion of globular and supermicellar formations under sonication. EPR studies have shown that molecular mobility and organization of hydrophobic regions in goat milk are similar to those observed in micellar formations of surfactants with a hydrocarbon chain length C12-C16. Ultrasound treatment did not affect submicellar and protein globule organization. Free radicals arising under ultrasound impact of milk reacted quickly with components of goat milk (triglycerides, proteins, fatty acids) and were not observed by spin trapping method. Elsevier 2021-09 Article PeerReviewed Sergeev, Andrey and Motyakin, Mikhail and Barashkova, Irina and Zaborova, Victoria and Krasulya, Olga and M. Yusof, Nor Saadah (2021) EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment. Ultrasonics Sonochemistry, 77. ISSN 1350-4177, DOI https://doi.org/10.1016/j.ultsonch.2021.105673 <https://doi.org/10.1016/j.ultsonch.2021.105673>. (In Press) 10.1016/j.ultsonch.2021.105673
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Sergeev, Andrey
Motyakin, Mikhail
Barashkova, Irina
Zaborova, Victoria
Krasulya, Olga
M. Yusof, Nor Saadah
EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
description The effect of ultrasound treatment on molecular mobility and organization of the main components in raw goat milk was studied by EPR and NMR spectroscopies. NMR relaxation studies showed an increase in the spin-lattice T1 and spin-spin T2 relaxation times in goat milk products (cream, anhydrous fat) and change in the diffusion of proton-containing molecules during ultrasound treatment. The diffusion became more uniform and could be rather accurately approximated by one effective diffusion coefficient D-eff, which indicates homogenization of goat milk components, dispersion of globular and supermicellar formations under sonication. EPR studies have shown that molecular mobility and organization of hydrophobic regions in goat milk are similar to those observed in micellar formations of surfactants with a hydrocarbon chain length C12-C16. Ultrasound treatment did not affect submicellar and protein globule organization. Free radicals arising under ultrasound impact of milk reacted quickly with components of goat milk (triglycerides, proteins, fatty acids) and were not observed by spin trapping method.
format Article
author Sergeev, Andrey
Motyakin, Mikhail
Barashkova, Irina
Zaborova, Victoria
Krasulya, Olga
M. Yusof, Nor Saadah
author_facet Sergeev, Andrey
Motyakin, Mikhail
Barashkova, Irina
Zaborova, Victoria
Krasulya, Olga
M. Yusof, Nor Saadah
author_sort Sergeev, Andrey
title EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
title_short EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
title_full EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
title_fullStr EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
title_full_unstemmed EPR and NMR study of molecular components mobility and organization in goat milk under ultrasound treatment
title_sort epr and nmr study of molecular components mobility and organization in goat milk under ultrasound treatment
publisher Elsevier
publishDate 2021
url http://eprints.um.edu.my/28290/
_version_ 1735409551222505472
score 13.211869

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