The article describes using quality function deployment (QFD) methodology to develop a new grain product as healthy food. A questionnaire survey of consumer requirements for the new grain product was processed with the help of two techniques of quality management – an affinity diagram and a tree diagram – to generalise and structure consumer preferences. The elicited consumer requirements were further ranked according to the priorities, which made it possible to distinguish between imperative requirements and those that can be disregarded without significant effect on the resulting quality of the product. The methodology of quality function deployment was used to transform requirements of potential customers for the quality of grain crackers into technical characteristics of a new health-conducive grain product to develop through priority optimisation. The study has determined that development of a grain product as healthy food should guarantee prophylactic effectiveness of the new product on the basis of natural enriching additives, increased BAS content, and, certainly, longer shelf life and safety parameters of grain crackers.

Development of recipe composition of bread with the inclusion of juniper using mathematical modeling and assessment of its quality

The main reason for the wheat flour poor quality is a deviation in the enzymatic complex and the biopolymers state due to poor agricultural and technical conditions, pest damage to grain stocks, unfavorable storage conditions. The use of various bakery improvements allows to make the technological process and the quality of bread better.The article presents research on the stabilization of the quality of bakery flour with low amylolytic activity (PE - 426 s) and strong gluten (the quality of gluten on the DIG (deformation index of gluten) device is 40 conditional units. Enzyme preparations with amylase and hemicellulase activity and sulfur-containing amino acid cysteine were used as improvers. The effect of each improver on the baking properties of the flour was determined by the results of the laboratory baking test. Using a complex of these baking improvers makes it possible to increase the efficiency of each component due to the synergy of their action. The complex of improvers in medium dosages showed best results of bread quality, organoleptic and physical parameters of bread improved, the specific volume of bread having increased from 2.4 to 4.3 cm3/g, i.е. in 1.8 times.

One of the ways to solve the problem of deteriorating human health can be the widespread use of plant products, among which the most valuable are vegetable oils, including amaranth oil. It contains a complex of vitamins, micro- and macroelements, unsaturated fatty acids and essential amino acids and a unique natural biologically active substance, squalene, which performs a number of key functions in the human body. However, post-harvest processing of amaranth grain, in particular drying, and its subsequent storage in different conditions can significantly impair its valuable natural properties. The research presents the results of studies of changes in the chemical composition and microbiological characteristics of amaranth grain in the process of drying and storage in different conditions, which will ensure its guaranteed quality during storage. The effect of drying amaranth to humidity of 9% at temperatures of 50 °С and 60 °С , has been studied on the total amount of saponified substances, content of squalene, linolenic, linoleic, oleic, palmitic and stearic acids, which were determined by gas – liquid chromatography. It has been found that after drying amaranth grain there is a decrease in the content of saponified substances by 10% and squalene by 14% compared to freshly harvested grain, and the content of free fatty acids in the unsaponified fraction remains unchanged. When storing amaranth during the year at temperatures of +5 °С, +15 °С and +25 °С and relative humidity of 55% and 75%. Changes in the content of such basic indicators of grain quality as protein, starch, fiber, fat, ash, as well as acid number and acidity of fat were determined. At the same time, the protein content decreased by 13.5%, starch by 8.7%, fat by 29.0%. The content of fiber and ash has not changed. Under the same storage conditions, there was also a significant deterioration in the quality of fat -acid number increased by 6.9 times, the acidity of the alcohol extract by 2.9 times. When storing amaranth at a temperature of +5 °С and a relative humidity of 55%, the decrease in the content of the main components was significantly smaller and amounted to 8.1% for protein, 2.9% for starch and 4.2% for fat. Under the same conditions, the activity of microorganisms is significantly reduced, which allowed to recommend these storage conditions for industrial use.

In the conditions of high competition in the flour market, the development of models that allow to predict the quantitative and qualitative indicators of flour during grain milling and to understand the correlation between grain and flour quality indicators is extremely relevant and requires efforts in this direction. 64 samples of wheat grain from mills situated in different regions of Ukraine, grown in 2019 and 2020 and straight flour obtained from this wheat in the laboratory at the mill MLU-202 were investigated. The data obtained confirmed great variability of grain and flour quality indicators which can depends on many factors: from agro-climatic condition and variety features to milling flow diagram and tempering conditions before milling. Wheat quality indicators are shown next results: test weight values ranged from 727 to 845 g/l, vitreousness – from 25 to 83%, initial moisture content – from 10.4 to 13.7%, protein content – from 11.3 to 17.2%, ash content – from 1.35 to 1.73%, gluten content – from 17.6 to 38.3%, gluten deformation index – from 46 to 96 units and Falling Number – from 309 to 500 seconds. Analyzing of correlations between grain quality indicators and flour quality indicators shown: the direct extra high correlation between grain protein content and flour protein content (r=0.95) and also between grain gluten content and flour gluten content (r=0.87); average correlation between ash content of grain and ash content of flour (r=0.68). According to milling properties was found: average correlation of initial grain moisture content and flour yield (r=0.52), a direct high correlation between grain vitreousness and the ratio of reduction and break flour (r=0.70), and an inverse average correlation of test weight with ratio of break and reduction bran (r=–0.61). It has been established that the flour strength W is affected by a set of grain quality indicators: grain protein content with high coefficient correlation (r=0.70), grain gluten content and grain Falling Number with average correlation coefficients – r=0.53 and r=0.56, respectively. For other rheological indicators, such as stability, water absorption capacity and P/L, no high correlation coefficients were found, since their values depend on a complex of various indicators of grain. The obtained correlations can be used to improve the efficiency of grain blending before milling, to substantiate the modes of tempering, grinding, and flour mixing stage in existing mills, as well as to design a milling flow diagram for new mills.