Abstract
The chemical composition of ether, ethyl acetate and dichloromethane extracts of Umbilicaria crustulosa and U. cylindrica were determined for the first time by HPLC-UV, GC-FID and GC-MS. The HPLC-UV analysis was revealed the presence of methyl orsellinate, lecanoric acid, crustinic acid, gyrophoric acid and atranorin in U. crustulosa extracts while in U. cylindrica extracts were detected following compounds: salazinic acid, norstictic acid, atraric acid, gyrophoric acid and atranorin. GC-FID and GC-MS analysis were enabled the identification of orsellinic acid (40.4%) and orcinol (48.1%) as main components of U. crustulosa extracts and atraric acid (8.5%) and orcinol (10.3%) in U. cylindrica extracts.
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