Antioxidant capacity of different African seeds and vegetables and correlation with the contents of ascorbic acid, phenolics and flavonoids
| Autor: | Ofem Effiong Ofem, G Akwaowo, D B Zainab, E. E. Edet, G. O. Igile, J E Ofem |
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| Rok vydání: | 2015 |
| Předmět: |
Pharmacology
Antioxidant biology Chemistry medicine.medical_treatment Vernonia amygdalina food and beverages Pharmaceutical Science Plant Science Ascorbic acid biology.organism_classification food.food Telfairia occidentalis chemistry.chemical_compound food Complementary and alternative medicine Treculia africana Dry weight Drug Discovery Botany medicine Acetone heterocyclic compounds Baphia nitida Food science |
| Zdroj: | Journal of Medicinal Plants Research. 9:454-461 |
| ISSN: | 1996-0875 |
| DOI: | 10.5897/jmpr2014.5660 |
| Popis: | The antioxidant capacity of 2 African seeds and 8 vegetables were analyzed using ferric reducing antioxidant power assay (FRAP assay) after water and acetone extractions. The contents of ascorbic acid, phenolics and flavonoids were determined and their correlations with FRAP value were investigated. The results showed that Vernonia amygdalina was stronger (4.84 mM/100 g dry weight (DW)) than other vegetables analyzed in antioxidant capacity based on total FRAP values. Baphia nitida was the lowest in total FRAP value (1.26 mM/100 g DW). Treculia africana seed was higher than Telfairia occidentalis seed in total FRAP value. T. occidentalis leaf had antioxidant capacity than its corresponding seed. All water extracts were higher in FRAP value than the acetone extracts. FRAP value was significantly correlated with the contents of ascorbic acid, phenolics, or flavonoids in water extracts and with flavonoids in acetone extract, in which ascorbic acid and flavonoids contributed most in the water extracts based on multivariate regression analysis. In conclusion, the different African seeds and vegetables were remarkably different in antioxidant capacity. Key words: Antioxidant capacity, ascorbic acid, flavonoids, phenolics, African seeds and vegetables. |
| Databáze: | OpenAIRE |
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