Identification of the Content of Biologically Active Substances in Nut Shots

One of ways of the food industry development is a search for non-traditional raw material resources with the high content of physiologically healthy nutrients. A promising way of biologically important raw materials is secondary products of oil production, especially shots. The aim of the research was to determine the content of biologically active substances in nut shots (cedar nut shot (CNS) and walnut shot (WNS)). The quality composition of the phenol nature was established by reactions with 10 % alcohol solutions of FeCl3, NaOH, АlCl3 and cyanidin test. The content of hydroxycinnamic acids (with recalculation for chlorogenic acid) was determined by the spectrophotometric method. The amount of tanning substances – by the method of permanganometry. The analysis of the sum of flavonoids (in recalculation for rutin) was realized by the method of differential spectrophotometry. Carbonic acids were identified by the method of gas-liquid chromatography. There were revealed quality differences in the composition of substances of the phenol nature for CNS and WNS. WNS is characterized by the higher content of hydroxycinnamic acids – in 2,5 times, tanning substances – in 3,1 times and flavonoids – in 60 times, comparing with CNS. The content of unsaturated fats in WNS is 95,79 % of the total number of fats, and in CNS – 80,05 %. The ratio Omega-3/Omega-6 for the fat component of CNS is 1/0,06, and for WNS fats – 1/1,3. WNS comparing with CNS is characterized by the higher content of Malic (in 5,3 times) and fumaric (in 100 times)acid. CNS contains more lemon (in 2,9 times) and succinic (in 2,2 times) acid. That is, identification of the content of some biologically active substances in nut shots allows to recommend them for usage in technologies of food products. It allows to enrich them with phenol compounds, polyunsaturated fats and organic acids

Research Into the Impact of Enzyme Preparations on the Processes of Grain Dough Fermentation and Bread Quality

The important issue of improvement in the technology of grain bread is the development of measures to improve the rheological properties of dough and bread. With this aim we proposed the use of cellulases, hemicellulases ans oxidoreductases at the stage of dough mixing. It is shown that the application of the studied enzymes for grain emmer and wheat dough contributes to the intensification of non-starch polysaccharides hydrolysis, namely reduction of the content of cellulose by 11 %, hemicelluloses – by 14.3 and 13.0 %, and increase in the content of water-soluble fraction of hemicelluloses.Additionally, the presence of enzyme preparations in the grain dough promotes slowing down of the processes of gluten proteolysis and improvement of its rheological properties that predetermines increase of gas-retaining capacity of the studied system. It was discovered that adding the studied enzyme preparations to grain dough contributes to the intensification of acid and gas generation in it. The resulting effect of biochemical and microbiological changes in grain dough under the influence of enzyme preparations of cellulase, xylanase and glucose oxidase is the improvement in the quality of grain bread compared to the samples without their addition

Estimation of Technological Properties of Nut Meals and Their Effect on the Quality of Emulsion for Butter Biscuits with Liquid Oils

We have examined the technological properties of cedar nut meal (CNM) and walnut nut meal (WNM). It was established that nut meals are the highly dispersed powders whose degree of dispersion exceeds that of wheat flour. The size of 69 % of CNM is up to 40 µm, 72 % of WNM, and only 35 % of flour.Compared with wheat flour, nut meals exposed to temperatures of 20...60 °C are characterized by better water-retaining capacity. When exposed to temperatures of90 °C, meals and flour have close values for water-retaining capacity. It was noted that nut meals are better at emulsifying liquid fats than solid that are traditionally used in the technology of butter biscuits (margarine and butter). It is shown that meals are characterized by high fat-retention capacity (FRC) relative to liquid vegetable oil. It is noted that the value of FRC for nut meals in the temperature range 20...60 °C increases by 1.9 times; in the range 60...80 °C, FRC of the examined samples almost does not change; and when exposed to temperatures of 100...140 °C, it starts to decrease.We have studied the quality of emulsions for butter biscuits for the case when 30 % of margarine are replaced with liquid vegetable oil while adding various amounts of nut meals. It was established that stability of the emulsion in which 30 % of margarine were replaced with liquid vegetable oil is 37.5 % less compared to control based on margarine. The introduction of CNM and WNM improves the stability of such an emulsion. It was noted that the samples of emulsion with the addition of 40 % and 50 % of CNM and WNM in terms of the value for an indicator of stability are maximally close to the control whose fat base was margarine. This is confirmed by the results from studying the dispersion, the effective viscosity of emulsions, and by results from microscopy.The obtained results are of practical significance in order to improve the technology of butter biscuits towards a partial substitution of margarine with liquid oils. That would improve the nutritional and biological value of butter biscuits