Podeu consultar el III Workshop anual INSA-UB complet a: http://hdl.handle.net/2445/118993Sessió 1. Pòster 

Alvarenga, J. F. R.

Hurtado Barroso, Sara

Lamuela Raventós, Rosa Ma.

Tresserra i Rimbau, Anna

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21  SESSIÓ 1           Pòster 6 Comparison of urinary excretion of total polyphenols after a high antioxidant diet and a low antioxidant diet Hurtado-Barroso S1,2*, Tresserra-Rimbau A1,2, Alvarenga JFR1, Lamuela-Raventós RM1,2  1Dept Nutrició, Ciències de l'Alimentació i Gastronomia, Facultat de Farmàcia i Ciències de l’Alimentació,Universitat de Barcelona (UB), Av. Prat de la Riba 171, 08921 Santa Coloma de Gramenet (Spain); Institut de Recerca en Nutrició i Seguretat Alimentària (INSA·UB), Universitat de Barcelona (UB).  2CIBER Physiopathology of Obesity and Nutrition (CIBERobn), Institute of Health Carlos III, ISCIII, Madrid, Spain. *Presenting author. Electronic address: sara.hurtado_17@ub.edu Background and objectives:  The hypothesis proposed was that the bioavailability of bioactive compounds, such as polyphenols, may be higher when the body is under a stressful situation (such a low antioxidant diet). The aim of this work was to compare the urinary excretion of total polyphenols before and after the intake of a single dose of sofrito after following either a high or a low antioxidant diet. Methodology:  A crossover, randomized and controlled interventional study was carried out. Twenty-two healthy volunteers between 18 and 32 years performed two interventions, a high antioxidant diet and a low antioxidant diet for two weeks. Then, they consumed a single dose of sofrito. Polyphenols in urine were assessed by the Folin-Ciocalteu method before and after sofrito intake (from 0h to 24h). Results and conclusions:  The concentration of polyphenols in urine was significantly higher after having the high antioxidant diet. However, the urinary concentration of polyphenols between 0 a 3 hours after the sofrito intake was higher among participants who followed the low polyphenolic diet. This response may be due to a higher absorption of polyphenols after following a low antioxidant diet.  Acknowledgements:  This work was supported by Ministerio de Economía, Industria y Competitividad (AGL2013-49083-C3-1-R and AGL2016-79113-R) and Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn). 

Comparison of urinary excretion of total polyphenols after a high antioxidant diet and a low antioxidant diet

http://diposit.ub.edu/dspace/bitstream/2445/120004/1/Hurtado_Barroso.pdf

Comparison of urinary excretion of total polyphenols after a high antioxidant diet and a low antioxidant diet

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