Deep eutectic solvent-based liquid-phase microextraction coupled with reversed-phase high-performance liquid chromatography for determination of α-, ß-, γ-, and δ-tocopherol in edible oils.
Anal Bioanal Chem
; 413(2): 577-584, 2021 Jan.
Article
em En
| MEDLINE
| ID: mdl-33205254
ABSTRACT
For simultaneous analysis of four fat-soluble tocopherols (α-, ß-, γ-, and δ-) in edible oils, an efficient and green method using deep eutectic solvent-based liquid-phase microextraction (DES-LPME) coupled with reversed-phase high-performance liquid chromatography (RP-HPLC) was developed. The DESs formed by different quaternary ammonium salts and ethanol were used as the extractants. Tetrabutylammonium chloride (TBAC)-ethanol DES at a molar ratio of 12 achieved the best extraction efficiency. Under the optimized conditions, the detection limits were in the range of 2.1-3.0 ng mL-1. The intra-day and inter-day repeatability were in the ranges of 3.9-5.3% and 4.8-7.1%, respectively, and the recoveries for the real samples varied from 80.7% to 105.4%. The developed method was successfully employed for the determination of all four tocopherol homologues with an RP-HPLC system containing a COSMOSIL π-NAP column in five edible oils collected locally. Graphical abstract.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Solventes
/
Óleos de Plantas
/
Tocoferóis
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Alfa-Tocoferol
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Beta-Tocoferol
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Gama-Tocoferol
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Microextração em Fase Líquida
Idioma:
En
Revista:
Anal Bioanal Chem
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
China