Analysis of cyclitols in different Quercus species by gas chromatography–mass spectrometry |
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| Authors: | Sonia Rodríguez‐Sánchez Ana I Ruiz‐Matute María Elena Alañón María Soledad Pérez‐Coello Luis F de Julio‐Torres Ramón Morales Isabel Martínez‐Castro |
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| Affiliation: | 1. Instituto de Química Orgánica General, CSIC, 28006 Madrid, Spain;2. área de Tecnología de los Alimentos, Facultad de Ciencias Químicas, Universidad de Castilla‐La Mancha, 13071 Ciudad Real, Spain;3. Real Jardín Botánico, CSIC, 28014 Madrid, Spain |
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| Abstract: | BACKGROUND: The carbohydrate profile of some woods used for aging wines and spirits has been recently studied using a pressurized liquid extraction method, the main differences found being related to cyclitol content. The aim of this study was to perform a detailed study of these compounds in woods of different Quercus species in order to identify two unknown compounds which appeared in the extracts and to verify whether the obtained profile was homogeneous for other Quercus species. RESULTS: Besides the known monosaccharides and five cyclitols previously described, three deoxy‐inositols (epi‐, vibo‐ and scyllo‐quercitol) were identified. The presence of these eight cyclitols was confirmed in all subgenera and species of Quercus analyzed, allowing a characteristic cyclitol profile. CONCLUSIONS: Three deoxy‐inositols (quercitols) have been identified in the carbohydrate profile of oak wood. All examined Quercus species displayed a common profile consisting of four inositols and four quercitols, which represent a good dataset for characterization of this genus. Copyright © 2010 Society of Chemical Industry |
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| Keywords: | cyclitols inositols deoxy‐inositols GC‐MS Quercus |
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