... conditions on ten heartwood ellagitannins (vescalin, castalin, roburins A- E, grandinin, vescalagin and casta-lagin) and ellagic acid were investigated in a 100 years old stand of 5 ha located in ... canobserve a negative correlation between castalin, vescalin and ellagic acid content and the percentage of vescalin, castalin,roburin A and C on the one hand and the percentage of vescala-gin and ... ellagitan-nins (vescalin, castalin, roburin A- E, grandinin, vescalagin and casta-lagin) and ellagic acid were quantified in each oak wood sample.2.3. Statistical treatmentStatistical treatments...