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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Free radical scavenging activity, phenolic contents and cytotoxicity of selected Nigerian medicinal plants
Food Chemistry, Volume 131, No. 4, Year 2012
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Description
We investigated the antioxidant ability, phenolic contents and cytotoxic effects of seven widely edible Nigerian medicinal plants, as a means of validating their ethnomedicinal use. Standard antioxidant assays assessed the capability of the extracts in scavenging 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl (OH), and superoxide anion (O2-) radicals, as well as in inhibiting lipid peroxidation. The extracts possessed significant antioxidant activity compared to standards and the 7-amino actinomycin and WST-1 cytotoxicity assays proved that they were non-toxic to human peripheral blood mononuclear cells, and the A2.01 cell line. Landolphia owariensis and Irvingia gabonensis had the most antioxidant activity in the DPPH assay, compared to ascorbic acid. They also significantly inhibited lipid peroxidation. I. gabonensis and Nauclea latifolia powerfully quenched the OH radical compared to α-tocopherol. The extracts' antioxidant activity and lipid peroxidation inhibitory potencies correlated with their phenolic and flavonoid contents. Thus, the antioxidant activities could be factors contributing substantially to their traditional medicinal use. © 2011 Elsevier Ltd. All rights reserved.
Authors & Co-Authors
Awah, Francis M.
Nigeria, Naukka
University of Nigeria
Canada, Winnipeg
The University of Winnipeg
Uzoegwu, Peter N.
Nigeria, Naukka
University of Nigeria
Ifeonu, Patrick
Nigeria, Naukka
University of Nigeria
Nigeria, Awka
National Association of Nigerian Traditional Medicine Practitioners Nantmp
Oyugi, Julius Otieno
Canada, Winnipeg
University of Manitoba
Kenya, Nairobi
University of Nairobi
Rutherford, John
Canada, Winnipeg
University of Manitoba
Yao, Xiaojian
Canada, Winnipeg
University of Manitoba
Fehrmann, Frauke
Canada, Winnipeg
University of Manitoba
Fowke, Keith Raymond
Canada, Winnipeg
University of Manitoba
Eze, Michael O.
Canada, Winnipeg
The University of Winnipeg
Statistics
Citations: 112
Authors: 9
Affiliations: 5
Identifiers
Doi:
10.1016/j.foodchem.2011.09.118
ISSN:
03088146
e-ISSN:
18737072
Research Areas
Environmental