Domestic Raw Materials Research Articles

Investigation of the possibility of using sulfur-containing oil products as flotation reagents components

ABSTRACT Due to the reduction in the geological reserves of critical raw materials and the increased dependence on low-grade sources, it has become urgent to improve technologies for beneficiation of non-ferrous and rare metal ores. The synthesis of new flotation reagents based on cheap domestic raw materials can be an option for modernising the flotation method. The article discusses the production of flotation reagents based on sulfur-containing oil products by ultrasonic cavitation. The emphasis is placed on the selection of oil products, which is based on the study of their qualitative and quantitative composition. Sulfur-containing oil products with the same sulfur content but different form of location is considered. It has been established that despite the virtually identical sulfur content, only sulfur-containing products of a certain molecular structure can be used to obtain flotation agents. Optimal conditions for ultrasonic cavitation and combinations of components in the compositions have been developed. The flotation reagent obtained under optimal conditions as a collector was tested for flotation of gold-bearing raw materials. It has been shown that its use made it possible to increase the degree of gold recovery into rougher concentrate by 4.8% and 7.5% compared to the classical one.

Влияние различных рас дрожжей на качество саке из отечественного сырья

Abstract. In the alcoholic beverage market, some attention has recently been paid to new beverages, one such beverage is saké. Along with other imported products, it is also necessary to establish production of this drink for the purpose of import substitution. The aim of the study was to investigate the influence of different yeast races on the quality of saké from domestic raw materials and to develop recommendations for their use. The research tasks included the study of the following issues: testing of different yeasts, study of the quality of domestic raw materials – rice from Krasnodar region for saké production, study of biochemical parameters of the obtained products, study of the elemental composition of saké, organoleptic evaluation of products. The research was carried out in the laboratory of the Department of Horticulture, Viticulture and Winemaking of the Institute of Horticulture and Landscape Architecture at the Federal State Budget Educational Institution of Higher Education “Russian State Agrarian University – Moscow Timiryazev Agricultural Academy” and in the Scientific Centre “Low-tonnage chemistry”. Eight yeast strains were included in the study, which were infected with steamed rice grains. Observations, records and analyses were carried out for each of 8 experimental samples: elemental and chemical composition, alcohol content, organoleptic indicators. For the first time in the established zymological features of yeast quality in obtaining products from domestic raw materials, features of microbiological characteristics of the resulting product and gave a conclusion and recommendations for the production of sake. Optimal variants of yeast, regularities of formation of biochemical composition of saké, content of various elements in the finished product, organoleptic indicators are established, recommendations on the studied factors are made. Key words: Yeast strains, saké, Japanese culture, sensory analysis, rice wine

Efficient technology for manufacturing electrical ceramics from low-iron diopside rocks

Relevance. The use of natural diopside CaMgSi2O6 in the production of ceramic dielectrics was implemented at two enterprises in the Chelyabinsk region in 1985 on the basis of comprehensive studies of diopside rocks of the Southern Baikal region by the team of the Department of Silicate Technology of Tomsk Polytechnic University. Natural diopside was used as an additive to the charge of electrical porcelain. In addition, ceramic dielectrics with a diopside crystalline phase were manufactured for exploitation at the frequencies of 106 Hz. Currently, the need for ceramic dielectrics in Russia is covered by imports. Though, the development of new technologies for ceramic dielectrics from domestic raw materials is relevant. Aim. To develop an efficient technology for ceramic dielectrics with a diopside crystalline phase from natural low-iron diopside rocks. This technology includes the production of compacts of unfired products by moulding aqueous suspensions of compositions of nonplastic components. Object. The technology of ceramic dielectrics with a diopside crystalline phase, including the firing of compacts formed from aqueous suspensions of diopside concentrate compositions with perlite as flux. Methods. The suspension was obtained by grinding the components in an aqueous environment in a ball mill with uralite balls at humidity of 20±2%. Compressive and bending strength, electrical strength, dielectric constant of the samples were determined according to the SS 24409-80, water absorption was measured according to the SS 26093-84. X-ray phase analysis was carried out on a DRON-3M diffractometer (Burevestnik, Russia), structure analysis was implemented on a JSM 6000 electron microscope (Jeol, Japan). Results. A distinctive feature of the proposed technology is the use of nonplastic components only to prepare the suspension and the exclusion of clay components. This makes it possible to reduce the humidity of the castings and stabilize the formation of the ceramic structure during firing. The authors have obtained ceramic dielectric with a diopside content of 70±2 wt % by firing products molded at 1130–1150°C. The bending strength reached 85–90 MPa with an electrical strength of 35–38 k V/mm2.

Studies of the phase composition and ultrafine structure of the initial domestic raw materials of proppants

The results of the study of intracrystalline electric and magnetic fields in samples on 57Fe nuclei by the ultrafine method of the Mossbauer effect are considered. The source of gamma radiation was 57Co in the chromium matrix. The spectra of the samples were measured on 57Fe nuclei using the MS1104Em spectrometer in the mode of constant accelerations at room temperature for absorption. The crystal structure, phase composition, and electronic states of individual components of the proppants are given. The measurements were carried out on the d8 Advance universal complex (Bruker, Germany). The data of parameters recorded on detectors of secondary energy characteristics of X-rays corresponding to K, L, M, N and O levels of electronic transitions using computer processing of elemental compositions and their ratios in samples are analyzed. The data of X-ray studies of the composition of fly ash are presented, determining its potential application in various industries, including the production of proppants. The results of the analysis of the chemical composition of bauxite samples obtained by X-ray diffraction analysis are presented. The silicon modulus (µSi) has been determined, which is the ratio of Al2O3 to SiO2 to characterize the quality of bauxite. The main components of bauxite were Al2O3 (aluminum oxide) and SiO2 (silicon dioxide). A significant content of Fe2O3 (iron oxide) was also noted, which is 24-33 wt. % for bauxite.

Novel method for finishing nonwoven fabrics from domestic raw materials with flame retardant and antimicrobial properties

This study aims to obtain a non-woven material with flame retardant and biocidal properties, considering the use of salicylic acid, copper sulfate, and guanidine hydrochloride in a finishing composition, based on preliminary studies. The concentrations of copper sulfate, guanidine hydrochloride, and salicylic acid were varied, respectively, within 1–5 g/L, 5–15 g/L, and 3–7 g/L. The conditions of the finishing process involved the application of the aqueous solutions, by spraying on the surface of the material, followed by drying at 120 °C for 5 min and heat treatment at 180 °C on a thermal press. In the production of nonwovens, treatment with a flame retardant and biocidal composition can be combined with emulsification of a mixture of fibers, or carried out after the formation of the canvas with subsequent heat treatment and calendering. The untreated sample of non-woven material, when tested for flammability with an ignition time of 15 s, burns completely in 40 s. For the sample treated by the proposed method, the self-burning is reduced to zero (DIN 53906). To study the biocidal activity, a microbiological essay was conducted according to ASTM E2149. It was found that the tested sample exhibits fungicidal activity against the tested strains. In addition, tests conducted on the skin-irritating effects of nonwovens treated with the proposed method have shown its safety for human health.

Comparative Study of Gellan Gum Derived from Domestic Raw Materials of Kazakhstan and Commercial Gellan

AbstractGellan gum prepared from the domestic raw materials of Kazakhstan is studied by methods of 1H NMR spectroscopy, FTIR, GPC, TGA, and compared with characteristics of commercial gellan gum. Fermentation on glucose‐fructose syrup of Zharkent and Burunday corn starch plants (Kazakhstan) by Sphingomonas paucimobilis ATCC 31461 produces a biomass containing a high acyl gellan gum (HAG). The average molecular weights, Mw, Mn, Mz, and polydispersity index (PDI) of HAG are determined by GPC. Low acyl gellan (LAG) is obtained by treatment of HAG with alkaline solution. It is shown that the spectral and thermal characteristics of HAG and LAG produced from the glucose‐fructose syrup and commercial gellan gum are similar.

Beet sugar enterprises in Kazakhstan: balanced management, reserves

The goal is to analyze production indicators of sugar beets and sugar for 1990-2023, to recommend measures to increase volume of sugar industry products. Methods - statistical, on the basis of which primary data on production of beet raw materials and sugar, its consumption per capita, export and import, and foreign trade turnover are collected. Results - the authors note that development of beet-sugar subcomplex is accompanied by stable decrease in quantity of this product, resulting in reduction in acreage and decrease in yield. The deterioration of parameters is due to high cost and low profitability of crop produced, outdated technical base, the use of lowquality seeds, problems with irrigation, and insufficient capacity of sugar factories. The current situation has a direct impact on the demand for sugar, which is met through imports and raw sugar obtained from processing. State measures aimed to increase sugar from domestic raw materials, set out in the Comprehensive Plan for the Development of Sugar Industry in the Republic of Kazakhstan for 2022-2026, were considered, in the framework of which it is provided to ensure the enterprises with unused agricultural land suitable for cultivating sugar beets within a radius of 150 kilometers to ensure their own raw materials taking into account the requests of the processors. Conclusions - the implementation of the set tasks will reduce sugar import dependence and saturate the domestic market with own products. At the same time, logistics issues, reducing cost of transporting finished products, and financing construction of railways need to be worked out.

Application and safety of pectin substances from vegetable raw materials in bread production

Currently, pectin substances and their compounds are often used in cooking as an anionic surfactant. In the technology of food preparation, such properties of pectin substances as swelling, thickening, gel-forming, crystalforming, water-absorbing ability, and emulsifying ability are of great importance. Like any gel-forming fiber, pectin helps remove heavy metals from the body such as lead, mercury, cadmium, etc. MCP may be better suited for these purposes, as it has been used in four clinical studies of heavy metal detoxification. Considering the accumulation of radioactive elements, heavy metal salts and pesticides in the environment and the human body, Jerusalem artichoke, which is rich in pectin substances, carotene and dietary fiber, is of particular interest. It is also economically beneficial as it is a domestic raw material. The goal of scientific research is to obtain a new type of functional bread with the addition of vegetable pectin. In this article, it was determined that the addition of pectin to dough has an effect on biochemical, colloidal, as well as microbiological processes. It also affects the physicochemical and rheological properties and reduces the content of contaminants. The work investigated that when pectin substances are added to the dough, its initial acidity increases. Acidity varied 2.2-2.4. It was also noted that in the test sample the fermentation process was more active; the activity of the fermentation process was associated with the addition of sugar along with pectin. As a result of this work, in order to improve the quality of bread and extend shelf life, pectin from raw materials of plant origin was added, the properties of bread samples with Jerusalem artichoke pectin with high performance were studied, and their organoleptic, physicochemical and safety indicators were studied. It was revealed that pectin reduces the content of some toxic elements by up to 100%. Practical significance: the conducted studies showed that the obtained samples of functional bread can be recommended for introduction into production to expand the range of bakery products.

STUDY OF THE INFLUENCE OF FRIT VISCOSITY ON THE MELTING CHARACTERISTICS OF GLAZES FOR SINGLE-FIRED CERAMIC TILES

The need to expand the assortment of ceramic tiles and ceramic granite by modifying the structure and texture of glass coatings with special properties using the technology of one-time firing, taking into account the aspects of resource and energy saving and environmental friendliness of widely used finishing materials, is analyzed. The need to create new types of ceramic tiles and ceramic granite in domestic production, taking into account the needs of the fuel and energy complex and the domestic raw material base in the event of emergency situations, has been determined. The purpose and tasks of the work are formulated, which determine the need to study the fusible characteristics of glazes and their viscosity for ceramic tiles for one-time firing. The peculiarities of frit compositions are analyzed and the requirements for surface properties are established to ensure a defect-free glaze coating for one-stage firing of ceramic tiles. High-calcium zinc aluminum silicate frits with a short interval of formation of a vitreous coating during single firing with different textures on PJSC «Kharkiv Tile Plant». The change in the characteristics of the change in viscosity and melting point of frit during the formation of glass-crystalline coatings, depending on the chemical composition and phase transformations during heat treatment, was analyzed. It was determined that ensuring crystallization viscosity η = 108,1-8,5 Pa·s in the area of ​​nucleation temperatures 1050-1150 °С for experimental frits indicates intensive formation and growth of crystalline phases and is decisive for ensuring their melting in the range of temperatures 1100 -1200 °С. It was established that the rapid increase in the viscosity of frit determines the rapid change in the characteristic melting curves in a narrow temperature range when ensuring successive stages of softening, forming a sphere, a hemisphere and melting is an indicator of the possibility of using the developed frits by single firing technology. The use of developed frits in single firing technology will significantly increase the competitiveness of domestic ceramic tiles and contribute to the stabilization of the market in the conditions of sustainable development of the country.

Studying the possibility of using butter produced by the method of converting high fat cream in the production of puff products

The article presents comparative studies of the composition, physico-chemical and structural-mechanical characteristics of butter samples produced by the method of converting high-fat cream from domestic raw materials, and foreign-made but- ter by churning cream in continuous buttermakers, as well as their influence on the process of puff pastry formation and the organoleptic properties of finished products made from puff pastry. The purpose of the research is to assess the suitability of butter produced by the method of converting high-fat cream for the production of puff pastry and products made from it. New Zealand butter samples produced by the method of churning cream in continuous butter makers and often used in the manufacture of puff pastry products in cafes served as control samples. Typical samples of Russian-made butter produced by the method of converting high-fat cream were used as experimental samples. Based on the research results, differences in the fatty acid composition of the studied butter samples were established in terms of the content of lauric, myristic, palmitic and linoleic acids. It was revealed that in the range from 20 to 30 °, i. e., in conditions under which the dough rolling and proofing operations take place, the experimental butter samples were characterized by relatively higher levels of solid triglycerides and hardness. This caused a decrease in the plasticity of the butter and its ability to roll out. Based on comparative studies of the structural and mechanical properties of the butter, it was established that in order to improve its characteristics necessary for uniform rolling of the butter layer, it is advisable to lower the hardness value while simultaneously increasing the value of the butter structure recoverability. It has been concluded that such characteristics for butter produced by the method of convert- ing high-fat cream can be obtained by adjusting the composition of the butter and its production modes, and a decrease in the solid triglycerides can be achieved by active influence of the diet of animals in different periods of the year.

INVESTIGATION OF THE USE OF KÜTAHYA REGION KAOLIN IN WALL TILES

The main raw materials in the ceramic wall tiles are clay, kaolin, calcite, and feldspar. The technical properties of the tiles (water absorption, total shrinkage, dry firing strength, fracture strength) and the desired physical properties (L, a, b, surface smoothness) vary depending on the raw material content in the recipe. Rheological parameters are crucial in the formulation development stages to avoid production problems and to ensure the final desired product parameters. Density, viscosity, and sieve analysis have therefore been included in the developed formulations. The use of raw materials from the region close to the production facility facilitates easy access to these materials. Thanks to this advantage, the use of domestic raw materials is becoming more widespread. In addition to the use of alternative raw materials, it contributes to the reduction of greenhouse gas emissions. The aim of this study, is to formulate a recipe for wall tiles using kaolins from the Kütahya region instead of clay from the Afyon region. Recipes containing 2%, 4%, 6%, and 8% of Kütahya region kaolin, with a corresponding reduction in clay from the Afyon region, were developed and sintered at 1130-1150°C with a 29-minute firing cycle. By analyzing the technical properties of the developed formulations, it was found that a maximum of 2% of Kütahya region kaolin could be used in the wall tile formulation. It was found that exceeding this percentage was not feasible due to the associated increase in water absorption, expansion of product size, and decrease in dry strength.

Implikasi Putusan World Trade Organization terhadap Larangan Ekspor Nikel Indonesia oleh Uni Eropa

Indonesia as a member of the World Trade Organization (WTO) is bound by the General Agreement on Tariffs and Trade (GATT) and WTO regulations. In an effort to increase domestic raw material processing, Indonesia implemented an export ban on nickel ore and other minerals. However, this action sparked protests from the European Union, leading to a lawsuit filed with the WTO. This article analyzes the WTO decision in the context of international trade principles, examining its legal applicability in Indonesia and its impact on other types of minerals. The research method used is a normative legal approach or doctrinal research. The final decision of the WTO dispute settlement panel declared that Indonesia's policy of export bans and mandatory processing of nickel minerals violated Article XI.1 of the GATT 1994. Nevertheless, Indonesia appealed the decision and remains committed to the nickel ore export ban to advance the economy and welfare of its people. Thus, this policy represents a bold step towards downstream the mining industry.

Determinants of Export in Boom and Bust: Evidence from the Indian Electronics Industry

India’s exports of electronics products underwent two major phases after 2000–2001. A boom phase from 2000–2001 to 2008–2009, where growth of Indian electronic exports increased significantly, and a bust phase from 2009–2010 to 2019–2020, with drastic decline in its growth. This gives us an opportunity to estimate and compare the factors that help firms to sustain exports in different phases of export growth. Using firm-level panel data and instrumental variable Tobit (IVTobit) model, this study shows that during the boom period, firms’ spending on research and development (R&D), imported technology and raw materials explain their exports. Firms’ age and multinational enterprises (MNEs) affiliation are also important for export in this phase. In the bust period, along with firms’ age, import of technology and raw materials, domestic raw materials, size, advertisement expenses and production efficiency of firms have emerged as important factors in determining export. These finding suggests that larger firms with high technical efficiency manage to export even during the bust period. Moreover, to export during the bust period, firms need to spend on domestic raw material, import of technologies and promotion of their products rather than spending on R&D activities. JEL Codes: F440, L6, L63, F140, L250, C240, C260

Prospects of concrete mixes based on domestic raw materials for 3D construction in the Russian Federation

Prospects of concrete mixes based on domestic raw materials for 3D construction in the Russian Federation

Restructured camel meat sausage product

At present Kazakhstan cannot fully provide itself with domestic production meat, and accordingly the search for domestic raw material resources of the region is relevant. In this connection it is necessary to utilise the available resources of meat species. Possible ways of utilisation of researches and developments in the field of technology of restructured sausages from camel meat are revealed. Research determines the optimum proportions of ingredients and additives to achieve the desired texture, flavour and quality of the product. Research can lead to the development of new methods and technologies that improve the sausage making process, including restructuring of camel meat. Application of restructuring in combination with structure-forming substances allows to regulate organoleptic and structural-mechanical properties of products, to attract into production raw materials limited by traditional technologies, chemical composition of finished products, to expand the assortment, to increase the depth of processing of meat raw materials, to increase the yield of finished products and profitability of production.The research results of the technology of restructured sausages from camel meat can find practical application in various fields. In general, the practical application of the research results on the development of restructured camel meat sausage technology can contribute to product diversification, health improvement and development of new market segments. The innovative technological product in this area will be "restructured camel meat sausage". The sausage is restructured using modern technology and techniques to achieve the optimum texture and flavour of the product. The food industry can also utilise an innovative technological product such as restructured camel meat sausage. This product is part of the range of sausage and meat products available in the market.

PUMPKIN SEED PASTE WITH IMPROVED CONSUMER PROPERTIES

According to the opinion of nutritionists, human health depends on a number of factors: the structure of nutrition by 40–45%, genetics by 18%, the state of health care by 10%, environmental factors by 8%, from other reasons – by 19–24%. That is, the nutrition factor is the leading one, and the health of the nation mainly depends on it. In recent decades, the pace of life of people in the developed countries of the world has accelerated significantly, and this is a significant lever in favor of the use of so-called "fast foods". Their composition includes peanut paste, which is very popular among the population of many countries, and its modifications containing various additives. The purpose of the work was to substantiate the feasibility of obtaining paste from domestic raw materials – pumpkin seeds with the addition of berry powders, as well as the characteristics of the obtained products. Analysis of the amino acid composition of pumpkin seed protein paste, its comparison with that of peanuts and the FAO/WHO standard shows that pumpkin seed protein is characterized by greater biological value. The oil components of the pumpkin and peanut seed pastes had almost the same qualitative fatty acid composition, but the latter was significantly inferior in terms of the ratio of different groups of acids – it was characterized by a low content of polyunsaturated linoleic acid and at the same time a large amount of saturated acids. Peanut paste had a higher oil content and higher calorie content compared to pumpkin seed paste. Three samples were obtained on the basis of pumpkin seed paste: 25% of the mass of the product was replaced with berry powders, namely dried and crushed viburnum, cranberry, sea buckthorn berries. They outperformed the original sample in terms of their sensory properties and had a reduced calorie content compared to it. The results of the study of changes in the physico-chemical parameters of the oil component of products during storage indicate that the introduction of berry powders significantly slows down the process of its oxidation. The best result was observed for the sample containing sea buckthorn powder, which is probably due to its high content of tocopherol, an effective antioxidant.

Cathode Active Material Synthesis and Battery Performance Tests for Li-Ion Batteries Obtained from Domestic Raw Materials: A Special Case Study from Ore to Battery

The energy requirement brought by technological developments from the past to the present evolves depending on the society's desire to be mobile, which is increasing day by day. Many technological devices such as electrical vehicles, smart phones, computers, drones, cameras meet the required energy from rechargeable lithium-ion batteries. However, the increasing world population and the increasing specifications of the technological devices developed in parallel with the per capita energy consumption by making the raw material resources needed for the production of these technological devices even more important. Nickel, cobalt and manganese compounds, which are the main raw materials used in the cathode production of NMC type lithium-ion batteries, are among these elements of strategic and critical importance, and the production of these chemicals in appropriate quality is of great importance for the industrial development of lithium-ion-based domestic battery technologies in each country. Meta Nikel Kobalt A.Ş., is the first and the only industrially scaled nickel-cobalt plant using HPAL technology in northern hemisphere at . In Gördes plant, nickel-cobalt-manganese hydroxide intermediate product concentrate (MHP) is produced from low grade Gördes lateritic ore following the unit operations of ore preparation, mineral processing, high pressure acid leaching, neutralization and precipitation and is currently completely exported to overseas. However, due to the responsibility of transforming domestic resources to high value-added technological products and obtaining value-added products, research in this field has been regarded and the necessary technological infrastructure and specific knowledge have been created. Within the scope of this project, precious metals in the MHP intermediate product obtained from Gördes lateritic ore were leached and valuable elements are taken to the liquid phase and crystallized after further purification processes such as solvent extraction and ion exchange. As a result, metal salts with purity up to 99.99% were obtained. The obtained nickel, cobalt and manganese sulphate salts were precipitated together with the developed co-precipitation process to obtain precursor in the form of NMC 622. After that, the precursor is treated with lithium and the cathode active material (CAM) is obtained by going through various heat treatments by systematically designed test campaign. The coin cell made with the CAM obtained from domestic raw materials showed a capacity of 184.55 mAh/g at 0.1C. It showed a capacity of 170.58 mAh/g in the first cycle and 157.45 mAh/g in the 50th cycle at 0.5 C, and the capacity conservation was calculated as 92.3% after 50 cycles at 0.5 C. The CAM obtained in the pilot-scale studies carried out according to the lab-scale developed process and sent to for making pouch type battery. In the 10 Ah capacity cells of the produced pouch type, 82% capacity conversation has been achieved as a result of 1000 cycles at a charge/discharge rate of 0.5 C at 100% CoC(Dept of Discharge) in the voltage range of 3-4.15V. Figure 1

RESEARCH OF THE PROCESSES OF MINERALIZATION OF DRINKING WATER BY CERAMIC MINERALIZERS FOR DOMESTIC WATER PURIFICATION SYSTEMS

The role of fresh water in the formation of the state is considered and it is determined that proper management of water resources is a critical component of increasing the standard of living of the population of all countries of the world, both from the point of view of the development of the industrial complex of the state and ensuring the health of the nation. However, the growing level of pollution of water bodies, significant deterioration of the water infrastructure of cities and sometimes the impossibility of restoring it due to active hostilities lead to a significant decrease in the quality of drinking water in Ukraine. An effective solution to this problem is the use of household filtration systems. Among their significant variety, the most widespread are reverse osmosis systems that can effectively purify water from heavy metals, soluble salts of viruses and microorganisms. Their main disadvantage is the extremely low salt content of 1520 mg/l, which requires domineralization up to 200 mg/ml. Existing systems of premineralization of drinking water are characterized by exceeding the limit values of salt content (saline) or instability of the level of mineralization (mineral). That is why the urgent task is the development of innovativemineralizers for drinking water with prolonged action based on non-cost domestic raw materials and the study of mineralization processes. The obtained data on the salt content of the solution after aging with mineralizers made it possible to confirm the assumption of a significant influence of the ratio of the surface area of the mineralizer to the volume of water on the rate of the leaching process. With a ratio of 0.4 cm2/ml, the minimum recommended level ofsalt content is achieved after 7 hours of exposure at a stable pH level (8.158.70). A study of the effect of cyclic water replacement on the level of salt content indicates minor changes in its values when held for one (71.1–79.0 mg/l) and three (136.9–140.3 mg/l) hours, which may indicate prolonged action mineralizer. The total hardness of water after 24 hours of exposure to a mineralizer is 1.55 mmol/l, the concentration of Ca2+ is 19 mg/l and Mg2+ is 7.2 mg/l, whichmeets the requirements of regulatory documents.

Amaranth Meal Powder Use in the Technology of Sweets with Fondant Cases

One of the main confectionery industry objectives is the development of waste-free technologies based on domestic raw materials. The objective is most relevant for the sweet production based on fondant cases – energetically unstable systems with a high sucrose concentration (more than 80 %) and a simple chemical composition causing the rapid consumer properties loss during storage. The study aims at the scientific use justification of the new raw material – amaranth meal powder in the technology of sweets with fondant case. The study objects are the following: amaranth meal of the native species Amaranthus L. (variety “Krepysh” of the FSVC selection); amaranth meal powder; sugar, fruit and milk fondant candy masses; candies. A man determined the chemical composition of pilot order of amaranth seed meal: 19.6 % proteins including water-soluble; 17.9 % dietary fiber; 46.9 % starch; 1.01 % macro- and microelements including selenium. The research concerns the IR treatment impact of amaranth meal particles on the power consumption of the disintegrator; the attack of amaranth meal proteins by digestive enzymes, the dependence of the organoleptic meal parameters on the processing temperature. The rational temperature range of IR processing is 115–120 °C. A man introduced the amaranth meal powder into the formulation of sweets with fondant cases by replacing white sugar. The amaranth meal powder presence in fondant syrup accelerates the crystallization process due to the sucrose adsorption on the amaranth meal particle surface followed by nucleation and crystal growth. The authors analyzed fractional composition by a microscopy. They determined that with an increase in the fine-crystalline fraction proportion, the sweet quality improves.

SYSTEMATIC INFORMATION BASE OF ENERGY-EFFICIENT APPLICATIONS FOR AVIATION PETROL

The additives in petrol was started to use in the first half of the twentieth century. In the late 1970s, a qualitative conceptual change in the development of this area of science and practice took place. Environmental pollution from harmful emissions led to the modification of petrol formulations and structural improvements of engines. The problem of improving the quality of gasoline and fuels for jet engines is usually solved in two ways: by developing high-quality new products and by efficient use of traditional ones.
 The proposed work analyses the scientific literature on energy-efficient additives to aviation gasoline and, on this basis, creates a systematic information base, namely: classification of the range of additives to gasoline (by the following features: chemical, physical and biological stability enhancers; flash point modifiers; combustion modifiers; washing; dopes that promote efficient operation of fuels at low temperatures; friction modifiers; marking agents; anti-corrosion agents; safety enhancers; surface-active property modifiers) and the range of anti-detonation and environmental (anti-emission) additives in aviation petrols.
 The following additives are manufactured and approved for use in Ukraine: poly-functional additives representing a complex mixture of manganese compounds and mixtures of paraffinic and naphthenic hydrocarbons (TU 30218597.001[in Ukrainian] "Poly-functional additives "Eco-Octane". Technical specifications"); iron-containing multifunctional additives "Standard"; there are also known developments of oxygenates based on methanol, ethanol and other alcohols, alcohol processing products, ethers and other oxygen-containing compounds.
 The research is being carried out within the framework of the project "Development of a technology for the production of new environmentally friendly high-octane aviation gasoline from domestic raw materials" at the expense of the state budget in accordance with the Order of the Cabinet of Ministers of Ukraine of 12 August 2022 No. 713-r "Pro zatverdzhennia pereliku naukovo-tekhnichnykh (eksperymentalnykh) rozrobok v ramkakh vykonannia derzhavnoho zamovlennia na naivazhlyvishi naukovo-tekhnichni (eksperymentalni) rozrobky ta naukovo-tekhnichnu produktsiiu u 2022 rotsi" [in Ukrainian] (registration number 2020.01/0242).