title: Impact of wheat bran derived arabinoxylanoligosaccharides and associated ferulic acid on dough and bread properties.
abstract: The impact of arabinoxylanoligosaccharides (AXOS) with varying bound or free ferulic acid (FA) content on dough and bread properties was studied in view of their prebiotic and antioxidant properties. AXOS with an FA content of 0.1-1.7% caused an increase in dough firmness with increasing AXOS concentration. AXOS with a high FA content (7.2%), on the contrary, resulted in an increase in dough extensibility and a decrease in resistance to extension, similar to that for free FA, when added in levels up to 2%. Higher levels resulted in unmanageable dough. A limited impact on dough gluten network formation was observed. These results suggest that for highly feruloylated AXOS, the FA-mediated dough softening supersedes the firming effect displayed by the carbohydrate moiety of AXOS. The impact of the different AXOS on bread volume, however, was minimal. Furthermore, AXOS in bread were not engaged in covalent cross-linking and significantly increased its antioxidant capacity.
authors.affiliation: Laboratory of Food Chemistry and Biochemistry & Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven , Kasteelpark Arenberg 20, B-3001 Leuven, Belgium.
authors.forename: Jeroen
authors.initials: J
authors.lastname: Snelders
authors.forename: Emmie
authors.initials: E
authors.lastname: Dornez
authors.forename: Jan A
authors.initials: JA
authors.lastname: Delcour
authors.forename: Christophe M
authors.initials: CM
authors.lastname: Courtin
mesh_terms: D001939:Bread; D003373:Coumaric Acids / Q000737:chemistry*; D004043:Dietary Fiber; D006863:Hydrogen-Ion Concentration; D009844:Oligosaccharides / Q000737:chemistry / Q000494:pharmacology*
chemical_list: D003373:Coumaric Acids; D004043:Dietary Fiber; D009844:Oligosaccharides; C004999:ferulic acid