Journal of Clinical Toxicology
Open Access
ISSN: 2161-0495
+44 1478 350008
ISSN: 2161-0495
+44 1478 350008
Eleazu CO
National Root Crops Research Institute,
Umudike, Umuahia, Abia State
Nigeria
Research Article
Chemical Composition and Free Radical Scavenging Activities of 10 Elite
Accessions of Ginger (Zingiber officinale Roscoe)
Author(s): Eleazu CO, Amadi CO, Iwo G, Nwosu P and Ironua CFEleazu CO, Amadi CO, Iwo G, Nwosu P and Ironua CF
The polyphenolic composition, oleoresin contents and antioxidant activities of 10 elite accessions of ginger (Zingiber officinale Roscoe) were investigated using standard procedures. The accessions of ginger contained significant quantities of polyphenols and oleoresin which suggested their therapeutic potentials. The antioxidant activities of extracts of the ginger accessions as determined by reducing power tests and their scavenging activities on 2, 2 diphenyl-1-picylhydrazyl radical, indicated that most of them possessed very strong antioxidant activities with higher reductive capacity than standard quercetin at higher concentrations. There was a negative correlation between percentage oleoresin versus phenol (r2=-0.328) but a positive correlation between oleoresin versus percentage inhibition of DPPH radical (r2=0.251) and reducing power (r2=0.494). We obtained a positive correlat.. View More»
DOI:
10.4172/2161-0495.1000155