Validation of a Mass Spectrometry Method To Quantify Oak Ellagitannins in Wine Samples
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- 作者：Ignacio Garc铆a-Est茅vez ; M. Teresa Escribano-Bail贸n ; Juli谩n C. Rivas-Gonzalo ; Cristina Alcalde-Eon
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2012
- 出版时间：February 15, 2012
- 年：2012
- 卷：60
- 期：6
- 页码：1373-1379
- 全文大小：215K
- 年卷期：v.60,no.6(February 15, 2012)
- ISSN：1520-5118
文摘
Detection and individual quantification of oak wood ellagitannins in oak barrel aged red wine samples are difficult mainly due to their low levels and the similarity between their structures. In this work, a quantification method using mass spectrometry has been developed and validated to quantify wine ellagitannins after sample fractionation with a previously reported method. The use of an internal standard is a requirement to correct mass signal variability. (鈭?-Gallocatechin, among the different tested compounds, was the only one that proved to be a suitable internal standard making possible the accurate and individual quantification of the main oak wood ellagitannins. The developed methodology has been used to detect and quantify these ellagitannins in different Spanish commercial wines, proving its usefulness.