Naslov
Antioxidant and antimicrobial properties of Teucrium arduini L. (Lamiaceae) flower and leaf infusions

Autori
Šamec, Dunja ; Gruz, Jiri ; Strnad, Miroslav ; Kremer, Dario ; Kosalec, Ivan ; Jurišić Grubešić, Renata ; Karlović, Ksenija ; Lučić, Ana ; Piljac-Žegarac, Jasenka

Izvornik
Food and chemical toxicology (0278-6915) 48 (2010), 1; 113-119

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

Ključne riječi
Teucrium arduini L. ; antioxidant activity ; antimicrobial activity ; total phenols ; phenolic acids ; Croatia

Sažetak
Antioxidant and antimicrobial activities, as well as total phenol (TP, Folin-Ciocalteu method) and phenolic acid (UPLC– MS/MS) contents of leaf and flower infusions of Teucrium arduini L. from six different mountainous localities in Croatia (Učka, Vošac, Sveti Jure, Snježnica, Vaganac, Šušanj) were analyzed in this study. Antioxidant capacity was evaluated using the ferric reducing/antioxidant power (FRAP) assay, as well as 2, 2-diphenyl- 1-picrylhydrazyl (DPPH), and 2, 2´-azinobis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical scavenging assays. The antioxidant potency composite index (ACI), giving equal weight to all three methods used to quantify antioxidant capacity, was the highest for the sample from Vošac (96.7) among flower infusions, while maximum ACI (100) was determined for the infusion from Učka among leaf infusions. Strong positive correlation was found between the total phenols and ACI for leaf (r= 0.953) and flower (r= 0.977) infusions. Our results point to significantly (p < 0.05) different TP content between leaf and flower infusions, as well as across localities. Leaf infusions of T. arduini from Šušanj exhibited marked antibacterial activity against Staphylococus aureus, while none of the tested infusions exhibited antimicrobial activity against gram-negative bacterial species, or the tested fungal species.

Izvorni jezik
Engleski

Znanstvena područja
Farmacija, Biotehnologija

POVEZANOST RADA