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Título: | Polyphenolic composition of Quercus suber cork from different Spanish provenances |
Autor: | Conde, Elvira; Cadahía, Estrella; García-Vallejo, M. C.; Fernández De Simón, María Brígida | Palabras clave: | Quercus suber Cork Polyphenols Tannins Phenolic acids and aldehyde Coumarins Ellagitannins High-performance liquid chromatography |
Fecha de publicación: | 1998 | Editor: | American Chemical Society | Citación: | Journal of Agricultural and Food Chemistry 46(8): 3166-3171 (1998) | Resumen: | Polyphenolic composition was studied by HPLC and classical chemical methods in reproduction cork of Quercus suber from different Spanish provenances. The low molecular weight polyphenols (gallic, protocatechuic, vanillic, caffeic, ferulic, and ellagic acids; protocatechuic, vanillic, coniferyl, and sinapic aldehydes; and aesculetin and scopoletin) and the ellagitannins (roburins A and E, grandinin, vescalagin, and castalagin) were identified and quantified. Ellagic acid was the main component in the ether soluble fraction, and the group of hydrolyzable tannins, and among them castalagin, was the most abundant in the tannic extract in all the samples. Although there was an important variability among provenances, no significant differences were found in the total tannin content and in the individual content of each ellagitannin. However, gallic and caffeic acids and protocatechuic aldehyde provided the greatest discrimination among provenances. | URI: | http://hdl.handle.net/10261/292465 | DOI: | 10.1021/jf970863k | ISSN: | 0021-8561 | E-ISSN: | 1520-5118 |
Aparece en las colecciones: | (INIA) Artículos |
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