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Željan Maleš, Dario Kremer, Zita Randić, Marko Randić, Kroata Pilepić and Mirza Bojić

Quantitative Analysis of Glucofrangulins and Phenolic Compounds in Croatian Rhamnus and Frangula Species

We determined the content of biologically active compounds in the bark of seven Rhamnus L. and two Frangula Mill. species growing in Croatia. All taxa tested had high content of total polyphenols (from 2.68% in R. orbiculata Bornm. to 8.50% in R. pumila Turra), moderate content of glucofrangulins (from 0.22% in R. pumila to 9.26% in R. fallax Boiss.), nontannic polyphenols (from 0.73% in R. orbiculata to 5.92% in F. alnus Mill.) and tannins (from 1.10% in R. saxatilis Jacq. to 4.92% in R. alaternus L.), and low content of phenolic acids (from 0.44% in R. orbiculata to 1.81% in R. intermedia Steud. & Hochst.) and flavonoids (from 0.02% in F. alnus to 1.44% in R. pumila). By ANOVA, variability was highest for glucofrangulin content, less for flavonoids, phenolic acids and nontannic polyphenols, and least for total polyphenols and tannins.

Open access

Dario Kremer, Marko Randić, Ivan Kosalec, Ana Brkljačić, Gordan Lukač, Irena Krušić, Dalibor Ballian, Faruk Bogunić and Ksenija Karlović

New localities of the subendemic species Berberis croatica, Teucrium arduini and Micromeria croatica in the Dinaric Alps

New localities of three subendemic species (Berberis croatica, Teucrium arduini and Micromeria croatica) have been found in the Dinaric Alps. Berberis croatica was found at ten new locations, nine of them in Croatia and one in Bosnia and Herzegovina. Teucrium arduini was found on Mt Učka, Mt Velebit, Mt Biokovo and Mt Sniježnica, at nine new locations while Micromeria croatica was found at four new locations, only on Mt Velebit.