Digital Library
Close Browse articles from a journal
 
<< previous    next >>
     Journal description
       All volumes of the corresponding journal
         All issues of the corresponding volume
           All articles of the corresponding issues
                                       Details for article 4 of 9 found articles
 
 
  Essential oil Composition and Antioxidant Activity of Pterocarya fraxinifolia
 
 
Title: Essential oil Composition and Antioxidant Activity of Pterocarya fraxinifolia
Author: M.A. Ebrahimzadeh
S.F. Nabavi
S.M. Nabavi
Appeared in: Pakistan journal of biological sciences
Paging: Volume 12 (2009) nr. 13 pages 957-963
Year: 2009
Contents: Current research into free radicals has confirmed that plants rich in antioxidants play an essential role in the prevention of many diseases. The potential antioxidant activities of Pterocarya fraxinifolia bark and leaves investigated employing six in vitro assay systems. IC50 for DPPH radical-scavenging activities were 3.89±0.09 for leaves and 41.57±1.30 μg mL-1 for bark, respectively. The leaf extract exhibited a good reducing power at 2.5 and 80 μg mL-1 that was comparable with Vit C (p>0.05). The extracts also showed weak nitric oxide-scavenging activity and Fe2+ chelating ability. The peroxidation inhibition of extracts exhibited values from 92 to 93% at 72nd h, almost at the same pattern of Vitamin C activity (p>0.05). Based on higher total phenol and flavonoid contents in leaves, higher antioxidant activities were observed in leaf extract. In addition, chemical composition of leaf essential oil was determined. The major compound was bisabolol oxide A (23.6%). Sesquiterpenes and monoterpenes are the major compounds in leaves essential oil. Presence of these compounds may be a reason for the good antioxidant activity of leaf extract.
Publisher: Asian Network for Scientific Information (provided by DOAJ)
Source file: Elektronische Wetenschappelijke Tijdschriften
 
 

                             Details for article 4 of 9 found articles
 
<< previous    next >>
 
 Koninklijke Bibliotheek - National Library of the Netherlands