Alkylresorcinols in fruit pulp and leaves of Ginkgo biloba L.

These studies were undertaken to characterise resorcinolic lipids (5-n-alk( en)ylresorcinols) composition and to determine their seasonal fluctuations in fruit pulp and leaves of Ginkgo biloba L. Resorcinolic lipid concentrati ons were consistently higher in fruit pulp than in leaves. In pulp, several mono- and di-unsaturated homologs of alkylresorcinols were the predominant group of analysed lipids. Contrary to the fruit pulp, only 5-n-pentadecylr esorcinol was demonstrated in leaves. initially, the alkylresorcinol's cont ent both in pulp and leaves increased until June - July and decreased follo wing seeds ripening. This trend continued until senescence of leaves in lat e September and October.