Quinoa cultivation has been expanded around the world in the last decade and is considered an exceptional crop with the potential of contributing to food security worldwide. The exceptional nutritional value of quinoa seeds relies on their high protein content, their amino acid profile that includes a good balance of essential amino acids, the
The technological and sensory properties and the staling of breads made from oat flour (OF) and buckwheat flour (BF) were analysed. Significant differences in protein and ash content were found in the experimental breads due to significant differences in the composition of the BF and OF used. As the proportion of BF in the recipe increased, a deterioration in the technological properties of the dough and bread as well as an increase in the crumb hardness were observed. The presence of OF in the recipe increased the bread volume, significantly enhanced the lightness of the crust and crumb and improved the overall sensory quality. The OF used in the recipe decreased the starch retrogradation enthalpy value, which is strongly related to a delay in bread staling. The proposed bakery products can be attractive to consumers who are looking for new food products.
In this study, the bioaccessible total phenolic compounds (TPC) and antioxidant capacity (AC) of commonly consumed bakery products enriched with raw (BH) or roasted (RBH) buckwheat hull were evaluated. The soluble and insoluble fractions obtained after in vitro enzymatic digestion of mixed rye/wheat bread with 4% of RBH (BRBH), wheat bread with 3% of BH (BBH), and their control counterparts were separated (C-BRBH and C-BBH, respectively). The addition of buckwheat hull, raw and roasted, significantly increased the values of analyzed parameters compared to control samples. Before the digestion, the highest values of TPC and AC were found for bread with 4% of RBH. After in vitro digestion of the bakery products, the content of TPC and AC in the soluble fraction was 75–90% higher compared to the values found in the undigested fraction. Generally, a decrease in the bioaccessibility index of enriched bakery products compared to control samples was observed. The obtained results indicate that buckwheat by-products may be used as a valuable ingredient for commonly used bakery products. Also, it was shown that the in vitro digestion model may be of relevance in assessing the bioaccessibility of bioactive compounds in commonly used bakery products.
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