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The Scientific World Journal
Volume 2012, Article ID 564367, 12 pages
http://dx.doi.org/10.1100/2012/564367
Research Article

Phenolic Compounds Analysis of Root, Stalk, and Leaves of Nettle

Food Engineering Department, Engineering Faculty, Ege University, 35100 Bornova/Izmir, Turkey

Received 17 October 2011; Accepted 19 December 2011

Academic Editor: Yiannis Fiamegos

Copyright © 2012 Semih Otles and Buket Yalcin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Types of nettles (Urtica dioica) were collected from different regions to analyze phenolic compounds in this research. Nettles are specially grown in the coastal part. According to this kind of properties, nettle samples were collected from coastal part of (Mediterranean, Aegean, Black sea, and Marmara) Turkey. Phenolic profile, total phenol compounds, and antioxidant activities of nettle samples were analyzed. Nettles were separated to the part of root, stalk, and leaves. Then, these parts of nettle were analyzed to understand the difference of phenolic compounds and amount of them. Nettle (root, stalk and leaves) samples were analyzed by using High-Performance Liquid Chromatography with Diode-Array Detection (HPLC-DAD) to qualitative and quantitative determination of the phenolic compounds. Total phenolic components were measured by using Folin-Ciocalteu method. The antioxidant activity was measured by using DPPH (2,2-diphenyl-1-picrylhydrazyl) which is generally used for herbal samples and based on single electron transfer (SET).