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A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability

In this work we propose the use of isothermal thermogravimetry to evaluate the oxidative stability of a lipid and to evaluate how the glyceride composition affects the entire oxidative process, to quantify the oxidation undertaken by the lipid, and numerically compare the oxidative behaviour of diff...

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Autores principales: Pizzimenti, Silvia, Bernazzani, Luca, Duce, Celia, Tinè, Maria Rosaria, Bonaduce, Ilaria
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10199037/
https://www.ncbi.nlm.nih.gov/pubmed/37208395
http://dx.doi.org/10.1038/s41598-023-34599-6
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author Pizzimenti, Silvia
Bernazzani, Luca
Duce, Celia
Tinè, Maria Rosaria
Bonaduce, Ilaria
author_facet Pizzimenti, Silvia
Bernazzani, Luca
Duce, Celia
Tinè, Maria Rosaria
Bonaduce, Ilaria
author_sort Pizzimenti, Silvia
collection PubMed
description In this work we propose the use of isothermal thermogravimetry to evaluate the oxidative stability of a lipid and to evaluate how the glyceride composition affects the entire oxidative process, to quantify the oxidation undertaken by the lipid, and numerically compare the oxidative behaviour of different lipids. The innovative aspect of the present method lies in the acquisition of a prolonged “oxygen uptake” curve (4000–10,000 min) of a lipid under oxygen and in the development of a semi-empirical fitting equation for the experimental data. This provides the induction period (oxidative stability), and allows to evaluate the rate of oxidation, the rate and the magnitude of oxidative degradation, the overall mass loss and the mass of oxygen taken by the lipid upon time. The proposed approach is used to characterize the oxidation of different edible oils with different degrees of unsaturation (linseed oil, sunflower oil, and olive oil) as well as chemically simpler compounds used in the literature to model the autoxidation of vegetable oils and lipids in general: triglycerides (glyceryl trilinolenate, glyceryl trilinoleate and glyceryl trioleate) and methyl esters (methyl linoleate and methyl linolenate). The approach proves very robust and very sensitive to changes in the sample composition.
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spelling pubmed-101990372023-05-21 A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability Pizzimenti, Silvia Bernazzani, Luca Duce, Celia Tinè, Maria Rosaria Bonaduce, Ilaria Sci Rep Article In this work we propose the use of isothermal thermogravimetry to evaluate the oxidative stability of a lipid and to evaluate how the glyceride composition affects the entire oxidative process, to quantify the oxidation undertaken by the lipid, and numerically compare the oxidative behaviour of different lipids. The innovative aspect of the present method lies in the acquisition of a prolonged “oxygen uptake” curve (4000–10,000 min) of a lipid under oxygen and in the development of a semi-empirical fitting equation for the experimental data. This provides the induction period (oxidative stability), and allows to evaluate the rate of oxidation, the rate and the magnitude of oxidative degradation, the overall mass loss and the mass of oxygen taken by the lipid upon time. The proposed approach is used to characterize the oxidation of different edible oils with different degrees of unsaturation (linseed oil, sunflower oil, and olive oil) as well as chemically simpler compounds used in the literature to model the autoxidation of vegetable oils and lipids in general: triglycerides (glyceryl trilinolenate, glyceryl trilinoleate and glyceryl trioleate) and methyl esters (methyl linoleate and methyl linolenate). The approach proves very robust and very sensitive to changes in the sample composition. Nature Publishing Group UK 2023-05-19 /pmc/articles/PMC10199037/ /pubmed/37208395 http://dx.doi.org/10.1038/s41598-023-34599-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Pizzimenti, Silvia
Bernazzani, Luca
Duce, Celia
Tinè, Maria Rosaria
Bonaduce, Ilaria
A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title_full A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title_fullStr A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title_full_unstemmed A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title_short A versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
title_sort versatile method to fingerprint and compare the oxidative behaviour of lipids beyond their oxidative stability
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10199037/
https://www.ncbi.nlm.nih.gov/pubmed/37208395
http://dx.doi.org/10.1038/s41598-023-34599-6
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