56 research outputs found

    A construction of open descendant potentials in all genera

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    We present a construction of an open analogue of total descendant and total ancestor potentials via an "open version" of Givental's action. Our construction gives a genus expansion for an arbitrary solution to the open WDVV equations satisfying a semisimplicity condition and admitting a unit. We show that the open total descendant potentials we define satisfy the open topological recursion relations in genus 0 and 1, the open string and open dilaton equations. We finish the paper with a computation of the simplest nontrivial open correlator in genus 1 using our construction.Comment: v3: minor changes before publication in journal have been made, 34 page

    RESEARCH OF THE INFLUENCE OF THE FOOD ADDITIVE "MAGNETOFOOD" ON THE QUALITY INDICATORS OF WHIPPED CONFECTIONERY PRODUCTS

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    The results of the influence of the food additive "Magnetofood" on the quality indicators of whipped confectionery in the technologies of curd dessert and white-pink marshmallow (organoleptic characteristics, density, mechanical strength, effective viscosity, degree of overrun and volume kinetics during storage) are presented. It was found that the introduction of the additive "Magnetofood" into the prototypes of cottage cheese desserts and white-pink marshmallows (on agar and pectin) in an amount from 0.1 % to 0.2 % to the mass of the recipe mixture in comparison with the control improves the structure, texture and external type of whipped products; the distribution function of air bubbles by diameter is narrow and symmetric, the diameter d = (45 ... 50) 10-3 m is a fundamental factor indicating the stabilizing effect of nanoparticles of the food additive "Magnetofood". It was found that with an increase in the mass fraction of the food additive "Magnetofood", the following increases (compared to the control): in curd desserts - the maximum shear stress by a factor of (1.18 ... 1.3) and the thixotropy coefficient by 1.26 times; in white-pink marshmallows - the strength of the foam structure is (1.1 ... 1.2) times and the effective viscosity of the marshmallow masses is (1.35 ... 1.55) times (which has a positive effect on the texture of the product and the extension of the period preservation of the freshness of finished products); as well as in marshmallow masses, they decrease: density by (1.12 ... 1.15) times and the duration of whipping by (1.5 ... 2.5) 60 s. The rational content of the additive "Magnetofood" in the recipes of curd dessert and marshmallow of white-pink marshmallow was determined – 0.15 % to the mass of the recipe mixture. The prospects of using "Magnetofood" as an improver and stabilizer of polyphase foam-like structures have been determined Object of research: production technology of cottage cheese desserts and white-pink marshmallows (on agar and pectin). Investigated problem: obtaining stable polyphase food systems, in particular, a foam-like structure, with a deviation of the quality indicators of raw ingredients and technological parameters in production conditions. Main scientific results: a deterioration in the quality of cottage cheese desserts and marshmallow products was revealed with a deviation of the physicochemical parameters of raw ingredients (in particular, cottage cheese, pectin, agar) and possible ranges of deviations of the initial values of the process parameters (temperature conditions, duration of whipping and gelation) leading to a deterioration the quality of finished products in terms of the following indicators: organoleptic characteristics, physicochemical, microbiological and functional and technological properties, shelf life. It is shown that improving the technology and increasing the stability of the polyphase structure of foam-like food products can be achieved by introducing a food additive of complex action "Magnetofood". In particular, due to the structure-forming, stabilizing, water-retaining and bacteriostatic properties of the Magnetofood additive. As a result of the introduction of 0.15 % food additive "Magnetofood" into the recipe for cottage cheese dessert and white-pink marshmallow, the following improves: organoleptic, structural-mechanical and physical-chemical indicators; structure, consistency and appearance of the whipped product; storage periods are extended. The area of practical use of the research results: food enterprises specializing in the production of whipped products (fermented milk desserts, pastel-marmalade products, sambucs). Innovative technological product: technology for the production of cottage cheese dessert and marshmallow white-pink (on agar) and (on pectin) using the food additive "Magnetofood". Scope of application of the innovative technological product: food industry, restaurant enterprises

    Investigation of the Water-retaining Capacity of the Carbohydrate Complex of Rye-wheat Dough with Addition of Polyfunctional Food Supplement “Magnetofооd”

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    Today in Ukraine the share of low-quality bakery products is near 20–25 %, because they often don\u27t correspond to quality standards and sanitary norms, because of being produced of flour with low bakery properties. That is why new raw material sources, functional ingredients and so on are searched for in bread technologies. For using new raw material and food supplement types, it is necessary to know their functional-technological properties (FTP) that allows to prognosticate the behavior of powder-like raw materials and food supplements in food masses at technological processing and storage of ready products.The water-retaining capacity (WRC) is one of main functional-technological parameters of carbohydrate-containing raw materials, because it favors the outcome, structural-mechanical properties and quality characteristics of ready products.The authors introduced “Magnetofood” polyfunctional food supplement for increasing WRC of rye-wheat dough. For grounding the mechanism of forming supramolecular groups in carbohydrate food systems: Magnetofood-polysacharide-water, there was studied the influence of “Magnetofood” food supplement on processes of hydration, swelling and water-retention by rye-wheat starch and rye-wheat flour.It was established, that introduction of “Magnetofood” food supplement in rye-wheat starch and flour in amounts: 0,10; 0,15; 0,20 % to the mass of starch or flour increases swelling and water-retaining capacity (WRC) of starch and flour: swelling in 1,3–1,5 and 1,5–2,25 times, respectively; WRC in 1,10–1,15 and 1,1–1,3 times, respectively.The rational dose of “Magnetofood” food supplement – 0,15 % to the mass of dry raw material was experimentally set. There was studied the influence of “Magnetofood” food supplement on rheological properties of water suspensions of rye-wheat starch and flour at different temperatures and different speeds of shift.It was established, that adding “Magnetofood” in amount 0,15 % favors increasing the effective viscosity of suspensions of experimental samples of starch and flour at temperatures: (23±2) ºС and (40±2) ºС comparing with control samples in average by 29,0 % – for starch and by 22,0 % – for flour at 23 °С and by 16,0 % – for starch and by 10,0 % – for flour at 40 °С.There was studied the dynamics of changing viscosity of colloid solutions of starch and flour, enriched with “Magnetofood” in amount 0,15 % to the mass of dry raw material in the keeping process at different temperatures and shift speed 9 s-1.There was established the increase of viscosity of suspensions of rye-wheat starch and flour in the process of infusion (especially at adding “Magnetofood”) that is connected with continuing hydration and swelling process.It was demonstrated, that the temperature increase of the colloid system from (23±20) ° С to (40±2) °С favors the increase of its viscosity – both at the initial moment and in infusion process during 30 min in average by 20,0–25,0 % at the expanse of the aforesaid processes. Moreover, adding “Magnetofood” accelerates and intensifies the processes of swelling and hydration of experimental samples of rye-wheat starch and flour comparing with control ones.The received experimental data may be used at elaborating the technology of rye-wheat bread, enriched with “Magnetofood” food supplement; and also at elaborating innovative technologies of carbohydrate food systems.The results of this study may be used at elaborating recipes and technologies of carbohydrate-containing food products for increasing their viscosity, water-retaining and stabilizing capacities

    Improving the Technique of Scrambled Desserts Using the Food Supplement “Magnetofood”

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    For improving the technology of scrambled dessert products, a food supplement, based on the nanopowder of oxides of two- and trivalent iron “Magnetofood” was introduced in the recipe composition. The object of the studies is base recipes: one of mousse “Cranberry” and sambuk “Apple”. For determining technological characteristics and quality parameters, conventional standard methods were used.It has been established, that introduction of the food supplement “Magnetofood” in amount 0,1 %, 0,15 %, 0,2 % of the recipe mixture mass improves consumption properties of scrambled desserts. The mean value of the organoleptic analysis increases by (1,25±0,1) points. The density also decreases by (29±1) kg/m3 for mousses, by (26±1) kg/m3 for sambuks, and scrambling duration – by ~ 3 minutes. At storing during 24 hours at h=(90±2) %, the microbial contamination of the surface of samples decreases – QMAFAnM in 10 times, yeasts – in 2 times, molds – in 2 times.It has been established, that introduction of the supplement “Magnetofood” favors the growth of the foam-creating ability in average: by (40±2) % for mousses, by (55±3) % for sambuks. The porosity increases by (14,3±0,7) % for mousses, by (12,7±0, 6) % for sambuks. The foam structure stability of scrambled desserts improves by (14±1,1) %. The food supplement “Magnetofood” also raises the effective viscosity by (32 ±1) Pa·s for mousses and by (41±2) Pa·s for sambuks and the mechanical strength of scrambled desserts in 1,23 times.The highest parameters were inherited to mousses and sambuks with supplement “Magnetofood” mass share 0,15 %.There have been experimentally substantiated scrambling technological parameters and regimes of recipe mixtures of berry-fruit mousses and sambuks, modified by the food supplement “Magnetofood”. The total scrambling duration is (14–16) minutes. The initial scrambling speed of the berry-fruit base is (2,0–2,2) s-1, at that the scrambling time is (5–6)·60s. Then the recipe mixture is scrambled at speed (3,3–3,5) s-1 during (3–4)·60s. Scrambling is finished at speed (2,0–2,2) s-1. The distinctive feature of the improved technology is premixing of the food supplement “Magnetofood” with gelatin, realized before the technological operation of soaking gelatin in cold water.The obtained experimental data may be used at developing innovative technologies of scrambled dessert products with the food supplement “Magnetofood”

    RESEARCH QUALITY OF THE WHEAT–RYE BREAD WITH ADDITION OF THE POLYFUNCTIONAL FOOD SUPPLEMENT «MAGNETOFOOD»

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    The influence of the polyfunctional food additive "Magnetofood" on the yield, batching, shrinkage, as well as physicochemical, microbiological, organoleptic parameters of wheat–rye bread" Kharkiv Rodnichok " enriched with this additive was investigated. The introduction of the food additive "Magnetofood" helps to increase the biological value (the content of the microelement of Fe is increased by 3 mg / 100 g), the energy value (increases by 3 kcal / 100 g) and the storage period (grows by 12 hours) in the experimental bread samples " Kharkiv Rodnichok " compared with the control (wheat–rye bread "Darnitsky"). That is, the food supplement "Magnetofood" due to Fe2 + can be recommended as an antioxidant and a source of easily digestible iron and an anti–anemia agent. It has been experimentally established that the introduction of the polyfunctional food additive "Magnetofood" improves the yield and quality of wheat–rye bread. In addition, the quality of bread is influenced by the way of introduction of "Magnetofood": when introducing "Magnetofud" in the form of an oil suspension (CHI), the indices are 1–2% better than when adding the additive as a dry powder. It also follows from the data obtained that the physicochemical parameters of the experimental bread samples " Kharkiv Rodnichok " are improved in comparison with the control (Bread "Darnitsky") as follows: yield, bake, shrinkage, porosity of crumb are increased by 2–3%, 5–10 %, 5–10%, 3–6% respectively; and the crumb humidity and acidity decrease by 1% and 1.0– 1.5 °, respectively. Microbiological studies have shown that seeding Вас. subtilis after 10 days will increase: in control 2 times, and in the samples of bread "Kharkov fontanel" 1, 2 – in 1,3 times. That is, "Magnetofood" has an antimicrobial effect, which leads to better quality, preservation of freshness and lengthening the shelf life of bakery products. Thus, the introduction of the polyfunctional food additive "Magnetofood" in wheat–rye bread improves yield, quality and shelf life.&nbsp

    INVESTIGATION OF THE WATER-RETAINING CAPACITY OF THE PROTEIN-HYDROCARBON COMPLEX OF RYE-WHEAT DOUGH WITH ADDITION OF POLYFUNCTIONAL FOOD SUPPLEMENT “MAGNETOFООD”

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    Under modern conditions, creation of new high effective technologies of bread is connected with a necessity of solving a problem of the products quality at the discrete work of enterprises: at processing raw materials (flour) with decreased properties in ecologically unfavorable regions, manufacturing products with prolonged storage terms, high consumption characteristics, diet destination, for treating-prophylactic nutrition. The development of innovative technologies of bakery products of rye-wheat flour is based on revelation of conceptual approaches, connected with creation of new functional technological properties of dough systems and ready products. That is why in bread technologies there are searched new raw material sources, food supplements-improvers, able to raise consumption characteristics, storage terms, food value; to enrich a ready product with functional ingredients and so on. The water-retaining capacity (WRC) – is one of main functional-technological parameters of food raw materials and ready products, because it favors the output, prime cost and quality characteristics of bakery products. For increasing WRC of rye-wheat dough, there is proposed the polyfunctional food supplement “Magnetofood”. For reasoning the mechanism of its interaction with polymer matrixes of lipo- and glucoproteids of rye-wheat flour and WRC mechanism of the food supplement “Magnetofood” in rye-wheat dough – there was investigated the influence of “Magnetofood” on processes of hydration, dissolution and water-retention of rye-wheat flour. It was established, that introduction of the food supplement “Magnetofood” in rye-wheat flour in amounts: 0,10; 0,15; 0,20 % of a flour mass increases its solubility and WRC: solubility – by 4,5 – 12,5 %; WRC – in 1,1 – 1,3 times, respectively. The rational dose of the food supplement “Magnetofood” is experimentally determined -– 0,15 % of a flour mass. There was investigated the influence of the food supplement “Magnetofood” on a quantity of bound water by experimental samples of rye-wheat flour at temperatures from 30 to 70 оС. It was established, that the temperature growth in experiments results in increasing the quantity of bound water for all experimental samples. Addition of “Magnetofood” in amounts: 0,10; 0,15; 0,20 % of a flour mass favors the increase of bound water in 1,2 – 1,5 times, comparing with the control (without “Magnetofood”). The received experimental data may be used at developing the technology of rye-wheat bread, enriched with the polyfunctional food supplement “Magnetofood”; and also at developing innovative technologies of food system systems (especially, meat, confectionary, milk ones). The results of the study may be used for developing recipes and technologies of food products for increasing their output, water-retaining and stabilizing capacities

    STABILITY AND MORPHOLOGICAL CHARACTERISTICS OF LIPID - MAGNETITE SUSPENSIONS

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    The study of stability of lipid-magnetite suspensions (LMS) was carried out using photometry and electronic microscopy. All suspensions are rather stable in time. The best results in stability were demonstrated by suspensions with ratio Fe3O4: SAS=0,02:0,35 g or 0,04 mass % : 0,70 mass % and 0,025: 0,35 g or 0,05 mass % : 0,70 mass %. The sizes of magnetite particles from SAS were determined as– <d>~76 nm. It was established, that with time (0–48,0 hours) and growth of wave length (210 – 1000 nm) is observed the gradual increase of transmission coefficient from 25 % (210 nm) to 71,9 % (1000 nm) at 0 hours of suspension ageing; from 27,5 % (210 nm) to 81,2 % (1000 nm) at maximal time of suspension ageing (48 hours). There parameters of LMS were determined: concentration of particles – N=1,43 ∙ 1012 cm-3, in 48 hours concentration decreased by 20 % (N=1,19∙1012 cm-3); r=38 nm, n=1,48, κ=0,01. The function of particles distribution by sizes is rather narrow and symmetric that certifies the system of synthesized nanoparticles as homogenous with low degree of polydispersity. Ultraviolet spectrums of LMS and their components were fixed and analyzed. Comparison of transmission spectrums of suspensions with different degree of dilution testifies to the chemical identity of samples. There were studied kinetic dependencies of transmission coefficient for suspensions with different magnetite concentration (Fegen), on which base was calculated the effective radius of particles of stabilized magnetite: 76–168 nm. The mean radius of particles in lipid suspension of magnetite without stabilizer (reff)=400 nm. Visually LMS manifested the high aggregative stability with high sedimentation time 48 hours. It was established, that LMS can be used as biologically active and feed additives with complex effect: manifest antioxidant activity, are the source of easily assimilated iron, improve quality and increase storage terms of fat-containing products. Thus, introduction of LMS in foodstuff improves its quality, nutritive and biological value.&nbsp

    INVESTIGATION OF THE WATER-RETAINING CAPACITY OF THE CARBOHYDRATE COMPLEX OF RYE-WHEAT DOUGH WITH ADDITION OF POLYFUNCTIONAL FOOD SUPPLEMENT “MAGNETOFООD”

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    Today in Ukraine the share of low-quality bakery products is near 20–25 %, because they often don’t correspond to quality standards and sanitary norms, because of being produced of flour with low bakery properties. That is why new raw material sources, functional ingredients and so on are searched for in bread technologies. For using new raw material and food supplement types, it is necessary to know their functional-technological properties (FTP) that allows to prognosticate the behavior of powder-like raw materials and food supplements in food masses at technological processing and storage of ready products. The water-retaining capacity (WRC) is one of main functional-technological parameters of carbohydrate-containing raw materials, because it favors the outcome, structural-mechanical properties and quality characteristics of ready products. The authors introduced “Magnetofood” polyfunctional food supplement for increasing WRC of rye-wheat dough. For grounding the mechanism of forming supramolecular groups in carbohydrate food systems: Magnetofood-polysacharide-water, there was studied the influence of “Magnetofood” food supplement on processes of hydration, swelling and water-retention by rye-wheat starch and rye-wheat flour. It was established, that introduction of “Magnetofood” food supplement in rye-wheat starch and flour in amounts: 0,10; 0,15; 0,20 % to the mass of starch or flour increases swelling and water-retaining capacity (WRC) of starch and flour: swelling in 1,3–1,5 and 1,5–2,25 times, respectively; WRC in 1,10–1,15 and 1,1–1,3 times, respectively. The rational dose of “Magnetofood” food supplement – 0,15 % to the mass of dry raw material was experimentally set.  There was studied the influence of “Magnetofood” food supplement on rheological properties of water suspensions of rye-wheat starch and flour at different temperatures and different speeds of shift. It was established, that adding “Magnetofood” in amount 0,15 % favors increasing the effective viscosity of suspensions of experimental samples of starch and flour at temperatures: (23±2) ºС and (40±2) ºС comparing with control samples in average by 29,0 % – for starch and by 22,0 % – for flour at 23 °С and by 16,0 % – for starch and by 10,0 % – for flour at 40 °С. There was studied the dynamics of changing viscosity of colloid solutions of starch and flour, enriched with “Magnetofood” in amount 0,15 % to the mass of dry raw material in the keeping process at different temperatures and shift speed 9 s-1. There was established the increase of viscosity of suspensions of rye-wheat starch and flour in the process of infusion (especially at adding “Magnetofood”) that is connected with continuing hydration and swelling process. It was demonstrated, that the temperature increase of the colloid system from (23±20) ° С to (40±2) °С favors the increase of its viscosity – both at the initial moment and in infusion process during 30 min in average by 20,0–25,0 % at the expanse of the aforesaid processes. Moreover, adding “Magnetofood” accelerates and intensifies the processes of swelling and hydration of experimental samples of rye-wheat starch and flour comparing with control ones. The received experimental data may be used at elaborating the technology of rye-wheat bread, enriched with “Magnetofood” food supplement; and also at elaborating innovative technologies of carbohydrate food systems. The results of this study may be used at elaborating recipes and technologies of carbohydrate-containing food products for increasing their viscosity, water-retaining and stabilizing capacities

    Research Into Technological Indicators of a Rye-wheat Dough Semi-finished Product with the Addition of the Polyfunctional Food Supplement "Magnetofооd"

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    We studied influence of the polyfunctional food supplement "Magnetofооd" on the technological parameters of rye-wheat dough semi-finished product and the finished product. A positive effect of the supplement "Magnetofооd" on the technological parameters of dough and the bread baked using it, is shown. It was established that adding the food supplement "Magnetofооd" in the amount of 0.15 % of the weight of flour reduces dough fermentation time by 13.0 on average %. The introduction of the food supplement "Magnetofооd" also increases the yield of a dough semi-finished product by 2.9 % on average and improves the yield of the finished product by 3.45 % on average. It was revealed that the multifunctional food supplement "Magnetofооd" enhances the quality of rye-wheat dough semi-finished product and the finished product due to its capacity of moisture retention and the inhibition of hydrolysis processes of the basic ingredients of dough.The obtained experimental data could be used to develop a technology of rye-wheat bread, enriched with the polyfunctional food supplement "Magnetofооd"

    RESEARCH INTO TECHNOLOGICAL INDICATORS OF A RYE-WHEAT DOUGH SEMI-FINISHED PRODUCT WITH THE ADDITION OF THE POLYFUNCTIONAL FOOD SUPPLEMENT "MAGNETOFООD"

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    We studied influence of the polyfunctional food supplement "Magnetofооd" on the technological parameters of rye-wheat dough semi-finished product and the finished product. A positive effect of the supplement "Magnetofооd" on the technological parameters of dough and the bread baked using it, is shown. It was established that adding the food supplement "Magnetofооd" in the amount of 0.15 % of the weight of flour reduces dough fermentation time by 13.0 on average %. The introduction of the food supplement "Magnetofооd" also increases the yield of a dough semi-finished product by 2.9 % on average and improves the yield of the finished product by 3.45 % on average. It was revealed that the multifunctional food supplement "Magnetofооd" enhances the quality of rye-wheat dough semi-finished product and the finished product due to its capacity of moisture retention and the inhibition of hydrolysis processes of the basic ingredients of dough. The obtained experimental data could be used to develop a technology of rye-wheat bread, enriched with the polyfunctional food supplement "Magnetofооd"
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