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oai:docta.ucm.es:20.500.14352/126122025-02-14T13:30:33Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Gómez Juaristi, Miren author Sarriá, Beatriz author Martínez López, Sara author Bravo Clemente, Laura author Mateos Briz, María Raquel author 2019-06-26 Cocoa has beneficial health effects partly due to its high flavanol content. This study was aimed at assessing the absorption and metabolism of polyphenols in two soluble cocoa products: a conventional (CC) and a flavanol-rich product (CC-PP). A crossover, randomized, blind study was performed in 13 healthy men and women. On two different days, after an overnight fast, volunteers consumed one serving of CC (15 g) or CC-PP (25 g) in 200 mL of semi-skimmed milk containing 19.80 mg and 68.25 mg of flavanols, respectively. Blood and urine samples were taken, before and after CC and CC-PP consumption, and analyzed by high-performance liquid chromatography coupled to electrospray ionisation and quadrupole time-of-flight mass spectrometry (HPLC-ESI-QToF-MS). Up to 10 and 30 metabolites were identified in plasma and urine, respectively. Phase II derivatives of epicatechin were identified with kinetics compatible with small intestine absorption, although the most abundant groups of metabolites were phase II derivatives of phenyl-γ-valerolactone and phenylvaleric acid, formed at colonic level. 5-(4′-Hydroxyphenyl)-γ-valerolactone-sulfate could be a sensitive biomarker of cocoa flavanol intake. CC and CC-PP flavanols showed a dose-dependent absorption with a recovery of 35%. In conclusion, cocoa flavanols are moderately bioavailable and extensively metabolized, mainly by the colonic microbiota. 2072-6643 10.3390/nu11071441 https://hdl.handle.net/20.500.14352/12612 https://doi.org/10.3390/nu11071441 https://www.mdpi.com/2072-6643/11/7/1441 Flavanol Bioavailability in Two Cocoa Products with Different Phenolic Content. A Comparative Study in Humans