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Microwave-assisted esterification and electro-enhanced solid-phase microextraction of omega-3 polyunsaturated fatty acids in eggs

Omega-3 polyunsaturated fatty acids (ω-3 PUFAs), a type of fatty acid that has many health benefits, are of increasing concern. Herein, we developed a method for the rapid esterification and enrichment of ω-3 PUFAs in eggs, which includes microwave-assisted esterification (MAE) and electrically enha...

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Published in:Food chemistry 2024-08, Vol.448, p.139060-139060, Article 139060
Main Authors: Gu, Xian-Chun, Zhang, Qiu-Fang, Pang, Yue-Hong, Shen, Xiao-Fang
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description Omega-3 polyunsaturated fatty acids (ω-3 PUFAs), a type of fatty acid that has many health benefits, are of increasing concern. Herein, we developed a method for the rapid esterification and enrichment of ω-3 PUFAs in eggs, which includes microwave-assisted esterification (MAE) and electrically enhanced solid-phase microextraction (EE-SPME). Combined with gas chromatographic, efficient detection of ω-3 PUFAs was achieved in eggs. Under microwave radiation, the esterification efficiency exhibited a significant increase ranging from 5.06 to 10.65 times. The EE-SPME method reduced extraction time from 50 to 15 min. In addition, improvements in extractive fiber coating materials were explored, which ensured efficient extraction of ω-3 PUFAs. Under the optimal conditions, the method displayed a low detection limit (1.01–1.54 μg L−1), good recoveries (85.82%–106.01%), and wide linear range (7.5–1000 μg L−1), which was successfully applied to determine ω-3 PUFAs in real egg samples. •The modified coating material (HLB-An) had good electrical and thermal properties.•Microwave method significantly reduced esterification time.•The introduction of electric field accelerated the extraction of omega-3 fatty acids.•A rapid and efficient method was developed to detect omega-3 fatty acids in eggs.
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subjects Eggs
Electro-enhanced solid-phase microextraction
Gas chromatography
Microwave-assisted esterification
Omega-3 polyunsaturated fatty acids
title Microwave-assisted esterification and electro-enhanced solid-phase microextraction of omega-3 polyunsaturated fatty acids in eggs
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