Antioxidant and antimicrobial properties of Moltkia petraea (Tratt.) Griseb. flower, leaf and stem infusions

Zovko Končić, Marijana; Kremer, Dario; Gruz, Jiri; Strnad, Miroslav; Biševac, Goran; Kosalec, Ivan; Šamec, Dunja; Piljac-Žegarac, Jasenka; Karlović, Ksenija (2010) Antioxidant and antimicrobial properties of Moltkia petraea (Tratt.) Griseb. flower, leaf and stem infusions. Food and Chemical Toxicology, 48 (6). pp. 1537-1542. ISSN 0278-6915

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Abstract

Antioxidant and antimicrobial activities as well as the quantity of phenolic substances (total phenol, flavonoid and phenolic acid contents) were determined in aqueous extracts of leaves, stems and flowers of Moltkia petraea (Tratt.) Griseb. from two mountainous localities (Sveti Jure and Sniježnica) in Croatia. In addition, the profile of phenolic acids was analyzed by UPLC–MS/MS. Antioxidant activities of all extracts in different test systems, namely the DPPH radical scavenging, reducing power assay and chelating activity, increased with extract concentration. Activity of the extracts from Sniježnica in - carotene-linoleic acid assay did not differ from the activity of standard, BHA. The leaf extracts from Sniježnica demonstrated superior antioxidant activity in most of the assays, while the stem extract from the same locality was the most effective Fe2+ ion chelator. In general, the extracts from Sniježnica were more effective antioxidants than the corresponding extracts from Sveti Jure. The aqueous extracts of M. petraea did not show antimicrobial activity against bacteria and fungi tested in the diffusion and dilution assays.

Item Type:	Article
Uncontrolled Keywords:	Moltkia petraea; 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 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 Mikromicete, interakcije toksičnih metabolita-zdravlje i prevencija [244185] Maja Šegvić Klarić 006-0061117-1242 MZOS
Depositing User:	Dunja Šamec
Date Deposited:	04 May 2015 13:37
URI:	http://fulir.irb.hr/id/eprint/1797
DOI:	10.1016/j.fct.2010.03.021

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