INVESTIGADORES
SILVA Maria Fernanda
artículos
Título:
Monitoring melatonin and its isomer in Vitis vinifera cv. Malbec by UHPLC-MS/MS from grape to bottle
Autor/es:
FEDERICO JOSE VICENTE GOMEZ; JULIO RABA; SOLEDAD CERUTTI; MARIA FERNANDA SILVA
Revista:
JOURNAL OF PINEAL RESEARCH
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2012 vol. 52 p. 349 - 355
ISSN:
0742-3098
Resumen:
Several studies have shown the presence of melatonin and related
compounds in grapes and wines. The latter provides evidence of the
possibility to enhance the nutraceutical properties of premium wines.
However, there are many external factors that can influence the levels of this
indolamine in grape and wines. In this study, the monitoring of melatonin
and its tentatively identified isomer was carried out during the entire
winemaking process in Vitis vinifera cv. Malbec by ultra high-performance
liquid chromatography-tandem mass spectrometry. Laboratory and pilot
studies were carried out to elucidate the role of grape, yeasts, and tryptophan
in the evolution of the indolamines during the fermentation process.
Melatonin was detected in grape extract within the range 120?160 ng/g while
its isomer was found in musts and finished wines. Our results demonstrate
that Saccaromyces cervisiae plays a decisive role in contributing to the
content of melatonin and its isomer in wine.