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Differentiation of Vitis vinifera varieties by MALDI-MS analysis of the grape seed proteins

✍ Scribed by Ivana Chiara Pesavento; Antonella Bertazzo; Riccardo Flamini; Antonio Dalla Vedova; Mirko De Rosso; Roberta Seraglia; Pietro Traldi

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
235 KB
Volume
43
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

Until now the study of pathogenic related proteins in grape juice and wine, performed by ESI‐MS, LC/ESI‐MS, and MALDI/MS, has been proposed for differentiation of varieties. In fact, chitinases and thaumatin‐like proteins persist through the vinification process and cause hazes and sediments in bottled wines. An additional instrument, potentially suitable for the grape varieties differentiation, has been developed by MALDI/MS for the grape seed protein analysis. The hydrosoluble protein profiles of seeds extract from three different Vitis vinifera grape (red and white) varieties were analyzed and compared. In order to evaluate the environmental conditions and harvest effects, the seed protein profiles of one grape variety from different locations and harvests were studied. Copyright © 2007 John Wiley & Sons, Ltd.

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