Seminar Dr Nastaran Ahadi
Assessment of Oxidative Behaviour in Polyunsaturated Fatty Acid (PUFA)-rich Oils Using Spectroscopic Techniques and Multivariate Analysis - Friday 19 June 2026 11 am, INRAE, Versailles
There is a growing need for rapid and robust analytical methods to assess the authenticity and quality of natural products in the bioactive sector. Lipid oxidation significantly affects the nutritional value, safety, and shelf life of edible oils, leading to secondary oxidation products such as peroxides, aldehydes, and ketones. Therefore, early detection and monitoring of oxidation are essential to maintain product integrity, consumer safety, and brand reputation.
This research aims to develop a rapid analytical platform for detecting adulterants and assessing lipid oxidation and oxidative stability in natural edible oils. A non-destructive and reagent-free approach was applied using Fourier-transform infrared (FTIR) and Raman spectroscopy combined with multivariate data analysis to evaluate oxidative degradation in three PUFA-rich oils: borage oil (BO), evening primrose oil (EPO), and fish oil (FO). Raman spectroscopy assessed the degree of unsaturation through key vibrational markers, while FTIR detected functional group changes during oxidation. Thermal oxidation at 50 °C simulated realistic storage conditions, and molecular changes were monitored over time. Spectral data were analysed using chemometric classification models, including partial least squares-discriminant analysis (PLS-DA), random forest (RF), and support vector machine (SVM). Among these, SVM achieved the highest classification accuracy in distinguishing oxidised (OX) from non-oxidised (NOX) samples.
Overall, this study demonstrates an accurate, rapid, and sustainable platform for detecting lipid oxidation in PUFA-rich oils. This approach offers strong potential for industrial quality assurance by reducing analysis time, cost, sample preparation, and reagent use, while supporting oil quality, authenticity assessment, regulatory compliance, and consumer confidence.
Dr. Nastaran Ahadi, "Facilitated Advancement of Australia's Bioactives" FAAB, Macquarie University, Sydney, Australia
Invitation: Thierry Chardot, "Dynamics and Structure of Lipid Bodies" DYSCOL team
Seminar in connection with the research developed at the Institute Jean-Pierre Bourgin for Plant Sciences.
This research aims to develop a rapid analytical platform for detecting adulterants and assessing lipid oxidation and oxidative stability in natural edible oils. A non-destructive and reagent-free approach was applied using Fourier-transform infrared (FTIR) and Raman spectroscopy combined with multivariate data analysis to evaluate oxidative degradation in three PUFA-rich oils: borage oil (BO), evening primrose oil (EPO), and fish oil (FO). Raman spectroscopy assessed the degree of unsaturation through key vibrational markers, while FTIR detected functional group changes during oxidation. Thermal oxidation at 50 °C simulated realistic storage conditions, and molecular changes were monitored over time. Spectral data were analysed using chemometric classification models, including partial least squares-discriminant analysis (PLS-DA), random forest (RF), and support vector machine (SVM). Among these, SVM achieved the highest classification accuracy in distinguishing oxidised (OX) from non-oxidised (NOX) samples.
Overall, this study demonstrates an accurate, rapid, and sustainable platform for detecting lipid oxidation in PUFA-rich oils. This approach offers strong potential for industrial quality assurance by reducing analysis time, cost, sample preparation, and reagent use, while supporting oil quality, authenticity assessment, regulatory compliance, and consumer confidence.
Dr. Nastaran Ahadi, "Facilitated Advancement of Australia's Bioactives" FAAB, Macquarie University, Sydney, Australia
Invitation: Thierry Chardot, "Dynamics and Structure of Lipid Bodies" DYSCOL team
Seminar in connection with the research developed at the Institute Jean-Pierre Bourgin for Plant Sciences.
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