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

Šamec, Dunja; Gruz, Jiri; Strnad, Miroslav; Kremer, Dario; Kosalec, Ivan; Jurišić Grubešić, Renata; Karlović, Ksenija; Lučić, Ana; Piljac-Žegarac, Jasenka (2010) Antioxidant and antimicrobial properties of Teucrium arduini L. (Lamiaceae) flower and leaf infusions (Teucrium arduini L. antioxidant capacity). Food and Chemical Toxicology, 48 (1). pp. 113-119. ISSN 0278-6915

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Abstract

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.

Item Type:	Article
Uncontrolled Keywords:	Teucrium arduini L.; antioxidant activity; antimicrobial activity; total phenols; phenolic acids; Croatia
Subjects:	BIOMEDICINE AND HEALTHCARE > Pharmacy BIOTECHNICAL SCIENCES > Agronomy > Phytomedicine
Divisions:	Division of Molecular Biology
Projects:	Project title Project leader Project code Project type Mikromicete, interakcije toksičnih metabolita-zdravlje i prevencija [244185] Maja Šegvić Klarić 006-0061117-1242 MZOS Molekularna regulacija biljnog razvitka [200002] Branka Salopek-Sondi 098-0982913-2829 MZOS Mikromorfološka i kemotaksonomska istraživanja nekih vrsta porodice Lamiaceae [240541] Dario Kremer 006-0000000-3178 MZOS
Depositing User:	Dunja Šamec
Date Deposited:	04 May 2015 13:17
URI:	http://fulir.irb.hr/id/eprint/1798
DOI:	10.1016/j.fct.2009.09.026

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