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.