Determination of volatile compounds in cider apple juices using a covalently bonded ionic liquid coating as the stationary phase in gas chromatography
| Autor: | Pilar Arias-Abrodo, Enrique Dapena de la Fuente, Juan José Mangas-Alonso, Daniel Méndez-Sánchez, Jaime González-Álvarez, Jairo Pello-Palma, Vicente Gotor-Fernández, María Dolores Gutiérrez-Álvarez |
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| Rok vydání: | 2017 |
| Předmět: |
Chromatography
Gas Liquid Phase Microextraction Capillary action Ionic Liquids Sensitivity and Specificity 01 natural sciences Biochemistry Phase Transition Analytical Chemistry chemistry.chemical_compound Thermal stability Monolith Volatile Organic Compounds geography geography.geographical_feature_category Chromatography 010405 organic chemistry 010401 analytical chemistry Solvation Reproducibility of Results 0104 chemical sciences Fruit and Vegetable Juices Silanol chemistry Covalent bond Malus Ionic liquid Gas chromatography Food Analysis |
| Zdroj: | Analytical and Bioanalytical Chemistry. 409:3033-3041 |
| ISSN: | 1618-2650 1618-2642 |
| DOI: | 10.1007/s00216-017-0250-9 |
| Popis: | A chromatographic method for the separation of volatile compounds in Asturian cider apple juices has been developed. For this separation purpose, a monocationic imidazolium-based ionic liquid bearing a reactive terminal iodine atom was synthesized by a quaternization-anion exchange chemical sequence. Next, the gas chromatography (GC) stationary phase was prepared by covalently linking the imidazolium monolith to the reactive silanol groups of the inner capillary wall at 70 °C. This coated GC column exhibited good thermal stability (290 °C), as well as good efficiency (2000 plates/m) in the separation of volatile compounds from Asturian apple cider juices, and was characterized using the Abraham solvation parameter model. The intra-day and inter-day precision of the chromatographic method was evaluated, obtaining relative standard deviations from 3.7 to 12.9% and from 7.4 to 18.0%, respectively. Furthermore, recoveries from 82.5 to 122% were achieved. Graphical Abstract Covalent bonding of an ionic liquid to inner column wall led to a great improvement of the separation efficiencies of stationary phases in gas chromatography. |
| Databáze: | OpenAIRE |
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