期刊
JOURNAL OF SEPARATION SCIENCE
卷 32, 期 11, 页码 1782-1790出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.200800706
关键词
Brandy de Jerez; Furanic derivates; High performance liquid chromatography; Phenolic compounds; Ultra performance liquid chromatography
资金
- Consejo Regulador de la Denominacion Especifica Brandy de Jerez
- Junta de Andalucia [P05-AGR-00767]
- Plan Nacional de Tecnologia de Alimentos [RTA2006-00036-C02-02]
Brandy and other aged distillates are a rich source of polyphenols. For brandies, contact with wood during ageing makes an important contribution to their polyphenols content. This paper describes the use of a previously devised ultra performance LC (UPLC) method to study the polyphenols content of Brandy de Jerez. UPLC is a new technique in LC offering several potential advantages, especially the reduction of time. Analyses of brandy performed by HPLC were repeated by UPLC. A special UPLC analytical column (Acquity UPLC BEH C-18 column, 100 x 2.1 mm), with a particle size of 1.7 mu m, forms part of this system. Using the UPLC system enabled the time needed for analysis to be reduced to one tenth of the time needed in the conventional HPLC system. In conclusion, the separation factor results of the UPLC were compared to those obtained using HPLC methods; this demonstrated that simple, high efficiency UPLC gradients are viable and advantageous substitutes for traditional analysis of polyphenols in brandy by HPLC. The method enabled 14 phenolic compounds to be identified and determined in 33 different commercial brandies, and this allowed them to be differentiated in function of quality.
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