| Title | The increase in human plasma antioxidant capacity after acute coffee intake is not associated with endogenous non-enzymatic antioxidant components. | | Author(s) | Moura-Nunes N, Perrone D, Farah A, Donangelo CM | | Institution | Laboratorio de Bioquimica Nutricional e de Alimentos, Instituto de Quimica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. | | Source | Int J Food Sci Nutr 2009 Sep 11.:1-9. | | Abstract | This study evaluated the association between the main plasma endogenous non-enzymatic antioxidant components and the increase in human antioxidant capacity (AC) after acute coffee intake. Ten adults were tested before and 90 min after consumption of coffee or water, in a crossover design, with a 7-day interval between tests. AC (FRAP and TRAP), ascorbic acid, alpha-tocopherol and gamma-tocopherol, albumin, bilirubin and uric acid were analyzed in plasma/serum. After coffee consumption FRAP and TRAP increased 2.6% and 7.6% (P<0.05), whereas after water consumption FRAP and TRAP decreased 2.5% and 1.0% (P<0.05), respectively. In general, AC assays correlated with uric acid and alpha-tocopherol (r>0.75; P<0.04), independently of treatment and time point. Changes in AC assays after coffee intake did not correlate with endogenous components, which remained unchanged. These results suggest that coffee components spare endogenous antioxidants or are themselves the main contributors to plasma AC increase after coffee intake. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 19750404 |
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