... vescalin and castalin, is mostly the result of an increase in roburin A-E,grandinin and vescalagin, whereas the castalagin content in- creases more slowly. Roburin A-E, grandinin and vescalagincontents ... vescalagin/castalagin ratio on the other hand. The significance of these correlations is that the increaseof the total ellagitannin content, corresponding to an increase in all individual ellagitannins ... 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 vescalagin/castalagin...