Naslov
Quantitative analysis of polyphenols and antioxidant activity in four Daphne L. species

Autori
Jurišić Grubešić, Renata ; Kremer, Dario ; Zovko Končić, Marijana ; Vuković Rodríguez, Jadranka ; Randić, Marko

Izvornik
Central european journal of biology (1895-104X) 7 (2012), 6; 1092-1100

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Daphne; total polyphenols; tannins; flavonoids; phenolic acids; multivariate analysis; antioxidant activity

Sažetak
The content of biologically active phenolic compounds (total polyphenols, tannins, flavonoids, and phenolic acids) were determined using spectrophotometry in four wild Croatian species of Daphne L. in the family Thymelaeaceae (Daphne alpina, D. cneorum, D. laureola, and D. mezereum). The concentration of total flavonoids (TF) was highest in the leaves of these Daphne species (0.12–0.51% dry herb weight, DW) whereas the content of other phenolic compounds analyzed were highest in the roots, including total polyphenols (TP ; 2.71–19.03% DW), tannins (T ; 1.14–7.39% DW), and total phenolic acids (TPA ; 0.12–0.87% DW). D. alpina contained the highest amount of polyphenols, with the exception of flavonoids, where maximum concentrations were found in D. laureola. We also examined the antioxidant activity of leaf, stem, and root extracts. All extracts analyzed demonstrated high free radical scavenging activity with the highest concentration in the leaf extracts of D. alpina. Leaf extracts of D. cneorum showed the highest antioxidant activity in a β-carotene bleaching assay.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Farmacija, Šumarstvo

POVEZANOST RADA