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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Comparative analysis of the in vitro antioxidant activity of white and black pepper
Nutrition Research, Volume 26, No. 12, Year 2006
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Description
As a result of normal metabolic processes, the human body produces reactive oxygen species capable of oxidizing biomolecules that can damage DNA, cells, and contribute to chronic disease. This process can be attenuated or perhaps reversed by diets containing spices that have the ability to scavenge reactive oxygen species. The present study measured the concentration of polyphenols in peppercorn (black and white) using the Folin-Ciocalteu method and investigated the radical scavenging activities of hydrolyzed and nonhydrolyzed pepper extracts using 1,1-diphenyl-2-picrylhydrazyl, the superoxide radical, and the hydroxyl radical as substrates. The hydrolyzed and nonhydrolyzed extracts of black pepper contained significantly (P < .001) more polyphenols compared with those of white pepper. For either of these peppercorns, the hydrolyzed extract contained significantly (P < .001) more polyphenols compared with the nonhydrolyzed extract. A dose-dependent effect was observed in the free radical and reactive oxygen species scavenging activities of all the extracts, with the black pepper extracts being the most effective. Peppercorns especially black pepper, which constitutes an important component in the diet of many sub-Saharan and oriental countries, can therefore be promoted for their nutritional importance as antioxidants and radical scavengers. © 2006.
Authors & Co-Authors
Agbor, G. A.
Cameroon, Yaounde
Crpmt
United States, Scranton
The University of Scranton
Vinson, Joe A.
United States, Scranton
The University of Scranton
Oben, Julius Enyong
Cameroon, Yaounde
Université de Yaoundé I
Ngogang, Jeanne Yonkeu
Cameroon, Yaounde
Université de Yaoundé I
Statistics
Citations: 72
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1016/j.nutres.2006.09.019
ISSN:
02715317
Research Areas
Genetics And Genomics
Noncommunicable Diseases