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Título: | Dietary fiber complex in beer |
Autor: | Díaz Rubio, M. Elena CSIC ORCID; Saura Calixto, Fulgencio D. CSIC | Fecha de publicación: | 2009 | Editor: | American Society of Brewing Chemists | Citación: | Journal of the American Society of Brewing Chemists 67: 38- 43 (2009) | Resumen: | Most reports on carbohydrates in beer deal with sensory and technological properties. A nutritional approach requires a distinction between digestible carbohydrates, which provide the caloric value of a beer, and nondigestible carbohydrates or dietary fiber (DF) - a substrate for gut microflora. The aim of this work was to determine the DF and compounds associated with the fiber matrix in lager, dark, and alcohol-free beers. A specific procedure that included treatment with digestive enzymes, dialysis, acidic hydrolysis, and cellulase hydrolysis was used. Results showed that the beer contained a quantitatively important DF complex (1.3-3.8 g/L) made up of indigestible polysaccharides, polyphenolic compounds, and a minor amount of protein. Analysis of polyphenols and antioxidant activity using 2,2′-azinobis(3-azinobis(3- ethylbenzthiazoline-6-sulfonate)) (ABTS) and ferric-reducing antioxidant power (FRAP) assays in beer and dialysis retentates revealed that a significant portion of the total polyphenols in the beer (17-44%) was associated with DF, which might affect their bioavailability and metabolism. © 2009 American Society of Brewing Chemists, Inc. | URI: | http://hdl.handle.net/10261/79047 | DOI: | 10.1094/ASBCJ-2008-1219-01 | Identificadores: | doi: 10.1094/ASBCJ-2008-1219-01 issn: 0361-0470 |
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