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A simple and green ultrasonic-assisted liquid-liquid microextraction technique based on deep eutectic solvents for the HPLC analysis of sesamol in sesame oils

Abstract

Sesamol is the key natural antioxidant in sesame oils, which can prevent the propagation of lipid peroxidation. A simple ultrasonic-assisted liquid-liquid microextraction (UALLME) technique based on deep eutectic solvents (DESs) was employed in the extraction of sesamol from Sesame oils. In a typical experiment, 400 µL DES (choline chloride/ethylene glycol) was used as extraction solvent, and ultrasonic-assisted extraction method was applied. After centrifugation, DES phase containing sesamol was directly analyzed by reverse-phase HPLC with UV detection and no phase inversion was involved. The pretreatment process was simple and green owing to DESs as solvent at low dosage. Under optimized condition, sesamol showed a linear calibration curve in the range of 5 ~ 500 mg/kg (r2=0.9998), and lower limit of detection (LOD) of 0.02 mg/kg. The recoveries was in the range of 97~108%, and the intra-day and inter-day precision were both less than 0.80%. This method was successfully applied to the determination of sesamol in 13 Sesame oil samples. And the results were close to those of conventional liquid-liquid extraction with methanol as solvent.

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Publication details

The article was received on 20 Apr 2017, accepted on 17 Jun 2017 and first published on 19 Jun 2017


Article type: Paper
DOI: 10.1039/C7AY01033H
Citation: Anal. Methods, 2017, Accepted Manuscript
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    A simple and green ultrasonic-assisted liquid-liquid microextraction technique based on deep eutectic solvents for the HPLC analysis of sesamol in sesame oils

    W. Liu, K. Zhang, Y. Qin and J. Yu, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY01033H

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