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Am. J. Enol. Vitic. 40:4:320-324 (1989)
Copyright © 1989 by the American Society for Enology and Viticulture.
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Glutathione Content and Glutathione to Hydroxycinnamic Acid Ratio in Vitis vinifera Grapes and Musts

V. Cheynier 1, J. M. Souquet 1, and M. Moutounet 1

1 Institute des Produits de la Vigne, Laboratoire des Polymères et des Techniques Physico-Chimiques, Institute National de la Recherche Agronomique, 9 place Viala, 34060 Montpellier Cedex, France.

Glutathione (GSH) was analyzed by high performance liquid chromatography following derivatization using Ellmann's reagent in the berries of 28 grape varieties from different locations and in the corresponding white musts. The hydroxycinnamic acid to glutathione molar ratios were determined for each sample. GSH concentration varied from 56 to 372 µmole/kg in grapes and from 46 to 333 mM in musts. The hydroxycinnamic acids to glutathione ratio was consistently higher in the entire berries than in the corresponding musts. The extreme values were 1.3 and 12.7 in berries and 0.6 and 10.5 in musts. Growing site related differences were also pointed out.

Key words: hydroxycinnamic acids, glutathione

Submitted on March 6, 1989




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Am. J. Enol. Vitic., September 1, 2006; 57(3): 249 - 256.
[Abstract] [Full Text] [PDF]


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Copyright © 1989 by the American Society for Enology and Viticulture.