Stilbene Levels in Grape Cane of Different Cultivars in Southern Chile: Determination by HPLC-DAD-MS/MS Method
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- 作者：Carola Vergara ; Dietrich von Baer ; Claudia Mardones ; Andrea Wilkens ; Katerina Wernekinck ; Anika Damm ; Sebastian Macke ; Tamara Gorena ; Peter Winterhalter
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2012
- 出版时间：February 1, 2012
- 年：2012
- 卷：60
- 期：4
- 页码：929-933
- 全文大小：222K
- 年卷期：v.60,no.4(February 1, 2012)
- ISSN：1520-5118
文摘
Health benefits of trans-resveratrol and other stilbenes in grapes, must, and wine have been pointed out by numerous authors. Less attention has been paid to the presence of stilbene derivatives in viticultural residues, such as grape canes. The present work reports the first results of a systematic study of stilbene levels in different grape varieties and cultivation areas in Chile, to evaluate their potential as an alternative source of bioactive stilbenes. In all cane samples, the predominant stilbene is trans-resveratrol, followed by 蔚-viniferin and piceatannol. In canes of Pinot noir up to 5590 卤 172 mg kg鈥? of trans-resveratrol and up to 6915 卤 175 mg kg鈥? of total stilbenes were detected. The observed concentrations of stilbenes in canes of Pinot noir from southern Chile until now are higher than those reported previously for this red variety. However, the highest concentration of total stilbenes observed in the analyzed samples was in the canes of white variety Gew眉rztraminer with 7857 卤 498 mg kg鈥?. Preliminary results indicate that these levels can evolve if canes are left for some months on the vineyard after pruning, observing an increase during the first 2 months and a decrease after this period.