Issue |
Analusis
Volume 28, Number 10, December 2000
Structure elucidation by LC-MS
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Page(s) | 960 - 965 | |
Section | Original articles | |
DOI | https://doi.org/10.1051/analusis:2000162 |
DOI: 10.1051/analusis:2000162
Individual, species and geographic origin influence on cooperage oak extractible content (Quercus robur L. and Quercus petraea Liebl.)
F. Doussot1, P. Pardon1, J. Dedier2 and B. De Jeso11 Institut du Pin, Université Bordeaux I, 351 cours de la Libération, 33405 Talence Cedex, France
2 Laboratoire de Chimie des Substances Végétales (LCSV), Université Bordeaux I, 351 cours de la Libération, 33405 Talence Cedex, France
(Received July 25, 2000; revised October 24, 2000; accepted October 25, 2000.)
Abstract
Dry extract, ellagitanins, free ellagic acid, whisky-lactone,
eugenol and vanillin have been quantified for a sample set of
61 pedunculate oaks (Quercus robur L.) and 72 sessile oaks (Quercus petraea Liebl.)
originating from 6 different forests. Despite a very high interindividual variability,
pedunculate oak shows higher level of dry extract, ellagitanins and free ellagic
acid but lower level in volatil compounds compared to sessile oak. Inside a same
species, differences between forests are less marked. Extractible compounds level
is poorly correlated to the grain (ring width). Regarding cambial age, it might
have its significance but lack of scientific data could not permit to conclude
in that sense. Our results suggest that cooperage oak selection should be based
on a species-provenance combination rather than on the grain or the provenance solely.
Key words: Oak -- extractible -- species -- variabilty.
© EDP Sciences, Wiley-VCH 2000