| Literature DB >> 1968939 |
S Scheller1, T Wilczok, S Imielski, W Krol, J Gabrys, J Shani.
Abstract
The free radical scavenging ability of an ethanolic extract of propolis (EEP) was demonstrated by electron spin resonance spectroscopy, when 2,2-diphenyl-1-picrylhydrazyl (DPPH) was treated with increasing concentrations of EEP. It was shown that the DPPH signal intensity was inversely related to the EEP concentration and to the reaction time. It is assumed that the ability of components in EEP to donate a hydrogen atom is responsible for the lowering of the DPPH-EEP signal, and reflect the anti-oxidative nature of EEP.Entities:
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Year: 1990 PMID： 1968939 DOI： 10.1080/09553009014552601
Source DB: PubMed Journal: Int J Radiat Biol ISSN： 0955-3002 Impact factor: 2.694