INVESTIGADORES
MESSINA German Alejandro
artículos
Título:
Determination of melatonin in wine and plant extracts by capillary electrochroma-tography with immobilized carboxylic multi-walled carbon nanotubes as stationary phase
Autor/es:
PATRICIA W. STEGE; LORENA L. SOMBRA; GERMÁN A. MESSINA; LUIS D. MARTINEZ; MARÍA F. SILVA
Revista:
ELECTROPHORESIS
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Año: 2010 vol. 31 p. 2242 - 2248
ISSN:
0173-0835
Resumen:
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The finding of melatonin, the often called hormone
of darkness in plants opens an
interesting perspective associated to the plethora of
health benefits related to the
moderate consumption of red wine. In this study, the
implementation of a new method
for the determination of melatonin in complex food
matrices by CEC with immobilized
carboxylic multi-walled carbon nanotubes as stationary
phase is demonstrated. The
results indicated high electrochromatographic
resolution, good capillary efficiencies and
improved sensitivity respect to those obtained with
conventional capillaries. In addition,
it was demonstrated highly reproducible results
between runs, days and columns. The
LOD for melatonin was 0.01 ng/mL. The method was
successfully applied to the
determination of melatonin in red and white wine,
grape skin and plant extracts of Salvia
officinalis L.
