Research of rheological indicators of the using the flour of germinated legumes

Abstract

The object of research is biscuit dough using flour from sprouted legumes with varying proportions of replacement by reducing wheat flour. The effect of legume flour with a replacement rate of 5, 10, 15, 25% is studied. The importance of the research is due to the fact that biscuits are high-calorie foods. This is what determines the creation of new types of products with a high content of protein, vitamins, minerals and a low content of simple carbohydrates. At the same time, it is important not only to improve the nutritional composition, but also to preserve the rheological properties of the biscuit dough, which depend on the internal structure of the system. One of the most problematic places is that when the flour raw material changes, even in small quantities, the rheological characteristics of the dough and, as a consequence, the finished flour products change. When preparing the biscuit, it is recommended to use wheat flour with low or medium quality gluten, otherwise the pulp of the finished product will be dense with poorly developed porosity. One of the possible solutions to this issue is the use of flour of sprouted legumes, enriched with microelements that can be used in biscuit production technologies. The indicators characterizing the rheological properties of the dough are investigated: dough formation time, dough stability to kneading, dough dilution degree after 10 minute after the start, the dough dilution degree after 12 minutes after the maximum. The obtained experimental studies make it possible to determine a comprehensive quality indicator using a farinograph. It is found that in the manufacture of biscuit dough it is rational to use 5-10% flour of sprouted legumes by reducing wheat flour. The use of legume flour in the specified concentrations improves the rheological characteristics of the biscuit dough, which is associated with a decrease in the amount of gluten in the dough. The prospect of further research is the study of the structure-forming indicators of the finished biscuit.