Valorisation of Buckwheat By-Product as a Health-Promoting Ingredient Rich in Fibre for the Formulation of Gluten-Free Bread
2023
Ángel L. Gutiérrez | Marina Villanueva | Daniel Rico | Joanna Harasym | Felicidad Ronda | Ana Belén Martín-Diana | Pedro A. Caballero
Bread is a widely consumed food that has often been used as a vehicle for functional ingredients such as dietary fibre. Fibre-rich breads have beneficial physiological effects on health, helping to combat chronic pathologies such as cardiovascular disease, diabetes, and certain types of colon cancer. The aim of this study is to evaluate the technological and nutritional effects of the inclusion of buckwheat hull particles (BH) at two addition levels (3 and 6%) and two particle sizes (fine, D50: 62.7 &mu:m: coarse, D50: 307 &mu:m) in a gluten-free (GF) bread formulation. A significant (p <: 0.05) increase in the dough elastic modulus (G&rsquo:) was observed for all doughs containing BH, from 712 Pa for a rice-based dough to 1027&ndash:3738 Pa for those containing BH. Compared to rice-based breads, those containing BH showed a significant (p <: 0.05) increase in total dietary fibre content (from three to five times) and in antioxidant capacity (from 78 to 290 mg TE/100 g dw. in the ORAC test). Breads containing fine BH at a level of 3% had similar sensory properties to the rice-based bread, demonstrating that it is possible to improve the TDF content while maintaining the sensory quality of the GF bread.
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