Characterisation of fatty acid forms using benchtop NMR in omega-3 oil supplements - Archive ouverte HAL
Article Dans Une Revue Magnetic Resonance in Chemistry Année : 2023

Characterisation of fatty acid forms using benchtop NMR in omega-3 oil supplements

Résumé

Abstract Omega‐3 fatty acid supplements, such as fish oil and plant‐based oils, have gained popularity because of their potential health benefits. However, the quality and composition of these supplements can vary widely, particularly in terms of the two main forms of omega‐3 fatty acids: triacylglycerols (TAGs) and ethyl esters (EEs). TAGs are the natural form found in fish oil but are prone to oxidation, whereas EEs are more stable but less well absorbed by the body. Differentiating between these forms is crucial for assessing the efficacy and tolerance of omega‐3 supplements. This article describes a novel approach to differentiate between TAG and EE forms of omega‐3 fatty acids in dietary supplements, utilizing a 60‐MHz benchtop nuclear magnetic resonance (NMR) spectrometer. The proposed method using 1 H and 1 H‐ 1 H COSY NMR provides a quick and accurate approach to screen the forms of omega‐3 fatty acids and evaluate their ratios. The presence of diacylglycerol (DAGs) in some supplements was also highlighted by this method and adds some information about the process used (i.e., esterification/enrichment). The affordability and user‐friendliness of benchtop NMR equipment make this method feasible for food processing companies or quality control laboratories. In this study, 24 oil supplements were analyzed using NMR analysis in order to demonstrate the potential of this method for the differentiation of TAG and EE forms in omega‐3 supplements.

Domaines

Chimie

Dates et versions

hal-04729672 , version 1 (10-10-2024)

Identifiants

Citer

Carla Remy, Saïda Danoun, Mathieu Delample, Cameron Morris, Véronique Gilard, et al.. Characterisation of fatty acid forms using benchtop NMR in omega-3 oil supplements. Magnetic Resonance in Chemistry, 2023, 62 (5), pp.328-336. ⟨10.1002/mrc.5398⟩. ⟨hal-04729672⟩
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