期刊
FOOD CHEMISTRY
卷 126, 期 4, 页码 1608-1613出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2010.12.038
关键词
Melatonin; Wines; LC-MS/MS; Yeast; Winemaking
资金
- Junta de Andalucia [AGR-02480]
- INIA
- FEDER [RTA 2008-00014]
- Consolider Fun-C-Food project [CSD2007-00063]
Melatonin (N-acetyl-5-methoxytryptamine) is a neurohormone produced in the pineal gland. Its biological properties are related to the circadian rhythm. Recently, the European Food Safety Authority (EFSA) accepted the health claim related to melatonin and the alleviation of subjective feelings of jet lag. This molecule has been detected in some foods. In this work, 13 grape varieties were studied; 7 monovarietal wines were produced in an experimental winery under strictly controlled conditions and were sampled in different steps. The grape varieties used to make the wines were: Cabernet Sauvignon, Merlot, Syrah, Tempranillo, Tintilla de Rota, Palomino Fino and Alpha red. Liquid chromatography tandem mass spectrometry (LC-MS/MS) unequivocally confirmed the presence of melatonin in wines. The main contribution of this paper is the results that clearly show that melatonin is synthesised during the winemaking process, specifically after the alcoholic fermentation. Indeed, melatonin is absent in grapes and musts and is formed during alcoholic fermentation. (C) 2010 Elsevier Ltd. All rights reserved.
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