Bioavailability of various polyphenols from a diet containing moderate amounts of berries.
J Agric Food Chem
; 58(7): 3927-32, 2010 Apr 14.
Article
en En
| MEDLINE
| ID: mdl-20073463
ABSTRACT
Berries are a rich source of various polyphenols. The objective of this study was to investigate the bioavailability of polyphenols from berries. Middle-aged subjects (n = 72) consumed moderate amounts of berry or control products for 8 weeks in a randomized, placebo-controlled dietary intervention trial. Average intake of berries was 160 g/day (bilberries, lingonberries, black currants, and chokeberries). Plasma and urine polyphenols were analyzed by GC-MS and HPLC and berry polyphenols by HPLC. The total intake of polyphenols was 837 mg/day. Plasma quercetin, p-coumaric acid, 3-hydroxyphenylacetic acid, caffeic acid, protocatechuic acid, vanillic acid, homovanillic acid, and 3-(3-hydroxyphenyl)propionic acid increased significantly from the baseline in the berry group compared to the control group (p < 0.05). The urinary excretion of quercetin, p-coumaric acid, and 3-hydroxyphenylacetic acid increased significantly in the berry group compared to the control group (p < 0.05). In conclusion, a number of polyphenols are bioavailable from a diet containing moderate amounts of blue and red berries.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Fenoles
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Flavonoides
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Magnoliopsida
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Suplementos Dietéticos
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Frutas
Tipo de estudio:
Clinical_trials
Idioma:
En
Revista:
J Agric Food Chem
Año:
2010
Tipo del documento:
Article
País de afiliación:
Finlandia