Determination of volatile compounds in cider apple juices using a covalently bonded ionic liquid coating as the stationary phase in gas chromatography.
Anal Bioanal Chem
; 409(11): 3033-3041, 2017 Apr.
Article
em En
| MEDLINE
| ID: mdl-28251289
ABSTRACT
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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cromatografia Gasosa
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Malus
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Líquidos Iônicos
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Compostos Orgânicos Voláteis
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Microextração em Fase Líquida
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Sucos de Frutas e Vegetais
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Análise de Alimentos
Tipo de estudo:
Diagnostic_studies
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Evaluation_studies
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Prognostic_studies
Idioma:
En
Revista:
Anal Bioanal Chem
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Espanha