Effervescence and graphitized multi-walled carbon nanotubes assisted microextraction for natural antioxidants by ultra high performance liquid chromatography with electrochemical detection and quadrupole time-of-flight tandem mass spectrometry.
J Chromatogr A
; 1418: 12-20, 2015 Oct 30.
Article
en En
| MEDLINE
| ID: mdl-26435313
ABSTRACT
In this article, effervescence and graphitized multi-walled carbon nanotubes assisted microextraction was first developed for the extraction of antioxidants in hawthorn samples. The use of an effervescent tablet composed of sodium dihydrogen phosphate, sodium carbonate and micro-scale carboxyl graphitized multi-walled carbon nanotubes (extraction sorbent) was the core of the method. In this study, ultra high performance liquid chromatography coupled with electrochemical detection and quadrupole time-of-flight tandem mass spectrometry was performed for qualitative and quantitative analyses of target analytes in hawthorn foodstuffs. Several experimental factors, such as amount of effervescent salts, the sorbent, elution time and elution solvent, were systematically assessed. Under the optimized conditions, a good linearity with R values better than 0.9980 was obtained. The detection limits estimated at a signal-to-noise ratio of 31 were ranging from 0.01 to 0.18ng/mL. These results suggested that the proposed method could be an alternative and promising sample preparation tool in future food analysis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Fenoles
/
Crataegus
/
Nanotubos de Carbono
/
Microextracción en Fase Sólida
/
Antioxidantes
Tipo de estudio:
Diagnostic_studies
/
Qualitative_research
Idioma:
En
Revista:
J Chromatogr A
Año:
2015
Tipo del documento:
Article
País de afiliación:
China