Processing Of Raw Materials Research Articles

Is Southeast Asia falling into a Latin American-style middle-income trap?

Output and productivity growth slowed in Southeast Asia after the 1997 financial crisis. Latin America experienced a more extreme slowdown following their radical 1980s (post-ISI) neoliberal reforms. This paper explores the causes of the “middle-income trap” and asks if Southeast Asia is following Latin America’s footsteps. In non-resource manufacturing the trap typically manifests when countries are priced out of labor-intensive activities but fail to penetrate more technically sophisticated markets. Natural resource exporters experience the trap when their “extractivist” strategies run out of steam and new engines of productivity growth, such as the processing of raw materials fail to materialize. Mainstream growth theory posits that middle-income countries can escape the trap by doubling down on orthodox policies such as more trade and financial liberalization, further deregulation, and investment in human capital. Yet evidence from countries that have evaded the trap does not support these claims; instead, they have formulated national strategies to promote investment in activities with greater long-term productivity growth potential, especially manufactured exports. The capacity to built flexible industrial strategies is also key. Resource-rich middle-income countries must reinvigorate and sustain their productivity growth by reengineering existing “extractivist” strategies to strengthen backward and forward linkages and leverage natural resource-based industrialization.

Intensification of the Process of Salting Fish Raw Materials with the Use of Acoustic Influences

Intensification of the Process of Salting Fish Raw Materials with the Use of Acoustic Influences

Integrated vertical mining and processing for Critical Mineral: A case study in Obi Island, North Maluku Province

Abstract Harita Nickel Group in Obi Island, Indonesia pioneered the utilization of limonite nickel ore (Ni <1.5%) for electric car batteries in the country. Nickel mining in Obi Island transitioned from nickel mining in 2010 to integrated mining by establishing downstream processing of raw materials for stainless steel in 2016 and electric car battery in 2018. Pyrometallurgical and hydrometallurgical technologies are employed in factories within Harita Nickel’s mining concession area, notably PT Trimegah Bangun Persada Tbk (PTTBP). This vertically integrated mining and downstream processing in Obi Island, South Halmahera Regency, North Maluku Province, marks a significant advancement in Indonesia’s mining industry. The close proximity (<3km) of mining and factory locations ensures efficiency and low costs. In vertically integrated mining, companies seek to maximize the use of all materials involved in production processes, minimizing waste and optimizing resource utilization. This research focusing on the waste generated during nickel processing of RKEF can be repurposing into new products, reducing environmental impact and increasing sustainability. Nickel, a critical mineral, has garnered global attention, particularly since Indonesia emerged as the world’s largest nickel ore reserve. The extractive industry, employing pyrometallurgy technology, has rapidly produced stainless steel raw materials from nickel mining since 2016. Indonesia’s nickel ore, known as saprolite nickel with high nickel content (>1.7%), has been exploited since the 1970s, while the low-grade limonite nickel layer gained traction only around mid-2018. In the future, Harita Nickel project in western Obi Island will be developed as an Eco Industrial Park for a greater integration, highlighting the comprehensive benefits of vertically integrated mining and providing a more thorough and insightful evaluation of its potential.

Integration of ethnoscience and science in making banana cake as a learning media

Banana cake is a type of processed food found among the people in Air Bungkal Village, Hamparan Rawang District, Sungai Penuh City which has developed into a business that can be used as a source of income. The purpose of this study is to analyze and transform the original knowledge of a group or community into scientific knowledge with the concept of science so that it can be a learning medium in biology learning in the community of Air Bungkal Village, Hamparan Rawang District, Sungai Penuh City. The method used in this study is a qualitative method with an exploratory approach with a research flow, namely observation, interviews, and documentation carried out in depth. The results of the study showed that there were several stages in the process of making bananas, starting from the selection of raw materials, processing raw materials, mixing, printing, baking, cutting, decorating with candied fruit, and packaging. The process of processing bananas into banana cakes transforming community knowledge into scientific knowledge with the concept of science can be used as a learning medium in biology that can be implemented for further research.

Development of Food Products Export from the Regions of the Far Eastern Federal District as Part of the Implementation of the Principles of Food Security

The article presents the rationale for solving certain issues of developing food exports from the Far Eastern Federal District regions in the context of ensuring food security in Russia. Based on the analysis of current scientifi c, methodological and analytical literature, as well as statistical and regulatory information, the paper examines the concepts of agricultural exports and food security in relation to the development of agriculture and rural areas in the Far East. The article outlines the need to change the entire range of indicators of self-sufficiency in agricultural products to solve food security problems in Russia at the systemic level. It is noted that import ahead and self-sufficiency of the Far Eastern Federal District regions in basic food products are of significant importance. The paper also substantiates the proposal to take into account as an indicator of the population’s need for food products, based on the standard diet based on the necessary human consumption of proteins, fats, carbohydrates, vitamins and drinking water based on the principles of regular, suffi cient and balanced nutrition. The paper analyzes measures to support the agro-industrial complex and agricultural exports in terms of developing preferential regimes in the Far Eastern Federal District, in particular, creating international territories of advanced development (TOR). The article presents a number of recommendations for the transformation of the food security system in relation to the development of export sectors of the agroindustrial complex and food industry in the Far Eastern Federal District. In particular, the ideological principles of the existence and development of international priority development areas in the Far Eastern Federal District are substantiated, based on the priority of supporting enterprises of the agro-industrial complex and food industry that use technologies for deep processing of raw materials and production of high-processed food products for export to friendly countries of the world.

Effect of Selective Milling on the Concentration Process of Critical Raw Materials from MSW Incinerator Bottom Ash

This research introduces selective milling as a reliable and effective initial concentration process to enable efficient separation and ensure high recovery rates of valuable and critical materials (minerals and metals) from processed incinerator bottom ash (pr.IBA), a treated mineral fraction originating from the conventional municipal solid waste (MSW) incinerator bottom ash (IBA) processing steps. Four different types of pr.IBA (each sample weighing up to three tons) were selectively milled using a demonstration-scale vertical roller mill to produce three distinct products: fine, middle, and coarse fractions. Chemical analysis demonstrated that a concentration step after selective milling could be reliably achieved regardless of the variation in the sources and qualities of the input materials. Specifically, calcium-containing compounds can be enriched in the fine fraction, potentially containing Ca2SiO4, CaSO4, and CaCO3. Complementary to its particle size equivalent to the raw mix, this calcium segregation could be valuable as an alternative material in cement clinker production. Conversely, the segregation of metal-bearing substances, particularly iron and copper, was detected in the coarse fraction. Such segregation is comparable to specific ore grades and enhances the possibility of metal recovery from pr.IBA.

Implementasi Nilai-Nilai Syariah dalam Proses Produksi UMKM Tempe Kupas Kulit Mbah Anik di Kecamatan Medan Deli

This study discusses the implementation of Sharia values in the production process of the small-medium enterprise (SME) "Tempe Kupas Kulit Mbah Anik," a business established in 1978 on Jln. Mangaan 1 gg. Ali, owned by Siti Nurhayani with four employees. Sharia principles in business practices, such as honesty, cleanliness, and fairness, serve as essential foundations for managing a food-related business. This research aims to examine the application of Sharia values at every stage of production, from raw material selection and processing to product distribution. The study uses a qualitative approach, collecting data through interviews and direct observation. The findings reveal that Sharia values are consistently applied in the SME's production processes, particularly in the selection of halal, high-quality raw materials, maintaining cleanliness in production, and treating employees fairly. The implications of this study suggest that implementing Sharia principles in SMEs has the potential to enhance consumer trust and foster sustainable and ethical business development. This study is expected to inspire other SMEs to incorporate Sharia principles in their operational practices.

Development of geopolymer binders

The scale of consumption of raw materials is large, and to a greater extent, it is the building materials industry that has a detrimental effect on the environment, thereby disturbing the pristine appearance and landscape of nature. Production volumes of Portland cement clinker have exceeded the mark of 5 billion tons per year. But the key dilemma lies in the emission of greenhouse gases, because during the high-temperature processing of raw materials to produce clinker, carbon dioxide, methane and nitrous oxide are released into the atmosphere. At the same time, slag-alkali and geopolymer binders can be considered as an alternative to resource-intensive Portland cement; they have found practical application in many developed countries of the world. A large backlog of research has allowed the authors of the work to model materials of both technogenic and natural origin “technogenic reaction powder – natural component – alkaline activator” in one binder system. Microanalysis confirmed the effectiveness of the integrated use of sodium silicofluoride and finely dispersed bentonite additives in the binder system, which had a beneficial effect on the pore structure of the stone and the properties of the cement stone. Using a properly designed binder composition “aspiration dust – finely dispersed bentonite – sodium silicofluoride – alkaline binder”, it is possible to obtain high-quality and durable composites with a low carbon footprint, thereby solving many environmental problems.

Specific features of a grinding module location in in-pit processing of peat raw materials

Specific features of a grinding module location in in-pit processing of peat raw materials

Основные направления и инструменты политики низкоуглеродного развития Бразилии

Brazil has a strong potential to achieve national climate goals and can also be an important decarbonization partner for other countries, especially in the supply of green hydrogen and critical raw materials for the production of new climate- neutral technologies. This article highlights the main tools and policies for Brazilʼs decarbonization and identifies potential areas in which the country can not only achieve its nationally determined contributions (NDCs), but also ensure innovative green economic growth. Low carbon intensity energy sources can ensure a low carbon footprint for industrial products, which can make goods more attractive in the face of increasing requirements and the introduction of measures such as the European Unionʼs (EU) carbon border adjustment mechanism (CBAM). Extensive deployment of renewable energy creates opportunities for the country to produce sustainable hydrogen, which will be in demand both domestically and globally. The main challenge for Brazilʼs decarbonization is its extensive agriculture, as well as widespread deforestation, the rate of which increased under the Bolsonaro administration. For agricultural products,which make up a large share of exports, deforestation regulations like those adopted in the EU would be a real barrier and could close European and other markets. The min- ing and processing of critical raw materials could be a potential breakthrough for the countryʼs economic growth due to the widespread decarbonization of the global economy. The low carbon intensity of the countryʼs industry, including mining, due to renewable energy sources appears to be a significant advantage. Lulaʼs return has given the international community hope that, at least in forestry and agriculture, significant efforts can be expected from Brazil, including international support, financing, and auditing.

RECYCLING OF LITHIUM ION BATTERIES: THE BLACK SPOT OF THE GREEN DEAL

Progress towards a decarbonized economy is dependent on the development of energy storage devices enabling the deployment of new strategies in the transport and energy sectors. Lithium-Ion Batteries (LIBs) play a key role in facilitating the shift from fossil fuels to renewables based on ubiquitous sources of decentralized energy. However, the rapidly increasing demand for batteries has generated environmental concerns regarding recycling, and raw materials depletion and exhaustion. Moreover, the level of extraction and processing of battery raw materials from local resources is almost negligible, inducing geopolitical concerns regarding potential threats to production and the stability of local manufactures. Finally, the storage and processing of hazardous wastes remains a difficult challenge in the circular economy concept. Recycling, therefore, is beneficial to the environment and has a high economic value via strengthening local supply chains. This work presents an alternative, comprehensive, and holistic review of LIB recycling technologies; from traditional metallurgy strategies to innovative, direct recycling methods and pioneering in-production and design-for-recycling approaches. It identifies new directions for making recycling efficient and techno-economically profitable and sustainable - including the vital role of robotics, artificial intelligence, and machine learning. Keywords: Lithium Ion Batteries, Recycling, Design for Recycling, In-production Recycling, Artificial Intelligence

Development and Experimental Study of an Experimental Setup for an Online Vibrating Tube Liquid Densitometer

Density is a crucial parameter for quantitatively describing the physical properties of liquids. It serves as an important indicator for scientific research, production process control, pipeline transportation, and other aspects. In oil pipeline transportation and raw material processing, the real-time online measurement of liquid density is of great significance. This paper analyzes the working principle of an online vibrating tube densitometer and derives the fitting equation for temperature, pressure, and density; it also conducts experiments with an online vibrating tube liquid densitometer and establishes a traceability chain for the experimental device. The experimental setup includes a desktop densitometer system, a multi-temperature field constant-temperature stirring system, a walk-in constant-temperature box, an automatic blowing system, and a frequency acquisition and calculation system. The uncertainty of the device’s evaluation is U = 0.08 kg/m3, k = 2. We built a set of pressure-density static test systems, statically testing the online vibrating tube’s liquid-density meter vibration frequency at different pressures; the whole set of systems can be used to assess the specific density, temperature, and pressure range of online vibrating tube liquid density meters in the experimental research to derive the standard temperature. Through the experimental research, we can accurately derive the fitting coefficients under the standard temperature, specific temperature, and pressure of online vibrating tube liquid densitometers, and calculate the fitting error of online vibrating tube liquid densitometers under different temperatures and pressures within the experimental range through fitting equations and coefficients, so as to realize the practical application of online vibrating tube liquid densitometers in engineering by utilizing straight-tube-type and curved-type online vibrating tube densitometers. A preliminary study was conducted on the effects of different densities, temperatures, and pressures on the vibrating tube system’s vibration cycle. The fit coefficient and error were calculated, and the experimental results were compared to the theoretical analysis to confirm the device’s conformity. The study verified the device’s scientific and reasonable design, and demonstrated that it is feasible to use the device for follow-up research. Using this device in subsequent experiments can verify the effects of viscosity, inlet, installation, and other factors on the online vibrating tube liquid densitometer’s metrological performance. Further experimental research on the pressure–frequency–density test system and the establishment of a wide range of temperatures and pressures within the pressure standard density test system are needed to achieve a wide range of temperatures and pressures under the standard density test.

STATE REGULATION OF THE EXTRACTION OF CRITICAL MINERALS AS A DOMINANT COMPONENT OF ACHIEVING THE GOALS OF SUSTAINABLE DEVELOPMENT AND STRENGTHENING THE ECONOMIC SECURITY OF THE STATE

The article states that the climate crisis and measures to mitigate it in recent years have significantly changed the energy landscape of the countries of the world and the configuration of the investment portfolio. Long-term investments in fossil fuels have been replaced by investments in environmentally friendly technologies, renewable sources of electricity, and smart systems for its distribution and storage. It is emphasized that even with full support of investments, plans for the decarburization of the electric power industry may remain unattainable, as the global reserves of «critical minerals», which are absolutely necessary for the transition to ecologically clean electric power, are noticeably decreasing and the demand continues to grow relentlessly. The scenarios developed by the International Energy Agency for the further transformation of the electric power sector to a low-carbon economy model were reviewed and briefly characterized: the scenario of declared policy (STEPS), the scenario of declared obligations (APS), and the scenario of net zero emissions by 2050 (NZE). The main aspects of each of the scenarios are outlined: the volume of demand for «critical minerals» their geographical concentration of extraction, and processing. It is emphasized that the world leader in the extraction and processing of «critical minerals» is the PRC, which dictates the «rules of the game» to the majority of the world's countries. Therefore, the issue of supplies of “critical minerals” is quite painful. It was emphasized that critical minerals market participants hope to reduce total dependence through new mining projects in different geographical regions, facilitating cross-investment opportunities between partner countries, and strengthening cooperation through initiatives such as the Mineral Security Partnership and the implementation of financial instruments. The potential of Ukraine's «critical minerals» and its ability to reduce the dependence of EU countries on the People's Republic of China are characterized. The main challenges of the development of the extractive industry in Ukraine are identified, and the main vectors of the Roadmap of the partnership between Ukraine and the EU regarding critical raw materials for 2023-2024 are outlined. It was emphasized that in order for Ukraine not to become only a supplier of raw materials, it is necessary to develop the processing of raw materials and the production of products with added value. It is emphasized that such localization requires much wider efforts of the government than the list of measures in the field of regulating the extraction of «critical minerals» defined by the latest legislative acts. The author emphasizes the need to develop a comprehensive system of incentives and introduce new opportunities for stabilization and sustainable development of Ukraine's economy in order to ensure sustainability and progress towards sustainable resource management and optimization of supply chains for critical raw materials. Proposals have been developed for climate-smart mining of «critical minerals» in Ukraine in the near future.

Assessment of grain starch content and responses to CMS-S and CMS-C in high-starch maize hybrids

Background. Increasing the production of native and modified starch from maize requires raw materials with high starch content in grain. Materials and methods. An experimental panel of 780 simple high-starch maize hybrids produced with CMS-S and CMS-C lines underwent two-year testing. Starch content in the grain of the lines and their hybrids was assessed with IR spectrometry. Native starch content in the grain of hybrids with highest yields was measured at the All-Russian Research Institute of Starch and Starch-Containing Raw Materials Processing using the method proposed by L. P. Nosovskaya with coauthors. Responses to CMS were scored according to G. S. Galeev’s scale. Results. Grain starch content was found to vary from 58% to 72% DMB throughout the tested panel. IR spectrometry helped to identify 22 hybrids with high (72.03–72.67%) starch content, and 5 hybrids promising for deep grain processing, combining high protein (10.3–13.53%) and oil (3.77–5.03%) levels with high starch content (69.02–70.4%) in their grain. Native starch extraction using L. P. Nosovskaya’s method showed that grain starch content in the best 68 hybrids ranged from 70.03 to 71.95% DMB. The collection was ranked according to the main heterotic groups: 57 lines of Iowa Dent, 26 lines of Stiff Stalk Synthetic, and 28 lines of Lancaster. For CMS-S and CMS-C types, 33 and 6 maintainers, and 9 and 8 restorers were selected, respectively. The hybrids were distributed across the following FAO maturity groups for maize: FAO 200–299 (14 hybrids), FAO 300–399 (7), FAO 400–449 (21), and FAO 450–500 (29). Conclusion. Assessing agronomic and breeding prospects of the best 68 hybrids between high-starch maize lines and sterile testers proved their potential for producing native starch to at least 70–72% DMB. Five hybrids were identified as promising for yielding native starch (69.02–70.4% DMB), as well as protein (10.3–13.5% DMB) and oil (3.77–5.03% DMB) by-products during deep grain processing.

The Dissolution Behavior of Pyrite and Chalcopyrite During Low-Temperature Pressure Oxidation: Chalcopyrite Influence on Pyrite Oxidation

The research of this paper was carried out on the low-temperature (100 ± 2 °C) pressure (0.2–0.8 MPa) leaching of pyrite, chalcopyrite and their mixture. According to experiments on chalcopyrite dissolution, increasing the oxygen pressure from 0.2 up to 0.8 MPa had a slight effect on chalcopyrite dissolution. Oxygen pressure and initial sulfuric acid concentration in the range of 10–50 g/L had the greatest positive effect on the pyrite oxidation. The SEM and EDX mappings indicate the chalcopyrite and pyrite surfaces to be passivated by elemental sulfur. The oxidation degree of pyrite in its mixture with chalcopyrite increased significantly from 54.5 up to 80.3% in 0–240 min. The reaction time is relative to the dissolution of the individual mineral, while the dissolution of chalcopyrite remained virtually unchanged. The addition of Cu (II) and Fe (III) ions does not influence pyrite dissolution when chalcopyrite is added in a leaching process, which can be explained by the formation of an electrochemical link between the minerals. The positive effect of chalcopyrite addition is associated with a decreased formation of elemental sulfur on the surface of pyrite. The described method can be used for the hydrometallurgical processing of copper raw materials with increased pyrite content, as well as for the pretreatment of copper concentrates with gold-rich pyrite concentrates to increase the recovery of gold and silver.

Design Of Safety Signs Using Ergonomic Function Deployment Method At PT.XYZ

PT. XYZ is a company engaged in manufacturing by processing raw materials into semi-finishedgoods or finished goods. Because the company routinely produces these products and involvesmachinery, it will allow small to serious work accidents to occur. Based on the hazard event dataowned by the company, there are 5 very diverse events that will be analyzed in the risk controlhierarchy to minimize hazard events. The results of the risk control hierarchy analysis have two hazardevents that have safety sign design criteria. Therefore, research was conducted to design safety signsin the area of explosive materials and loading progress in minimizing hazard events using safety signsassessment and Ergonomic Function Deployment approaches. The data needed in the design areanthropometric data, layout data, customer statements and level questionnaires interest andsatisfaction. From the results of the safe sign assessment, the signal word is obtained, determining thelocation, height, model, and material of the safety signs. The results of the safety signs assessmentwill be used for the Ergonomic Function Deployment approach. From the results of the ErgonomicFunction Deployment, the results obtained are the size of safety signs, safe reading distance, type oflayout, use of language and font size on safety signs. There are two types of designs, namely explosivematerial and loading progress safety signs. The design of safety signs refers to the ANSI Z535standard so that the design of safety signs has detailed signal words, symbols, signs, and wordmessages.

Study of the concordance between various concrete deformation models and experimental data for uniaxial compression cases

There are various equations describing concrete stress-strain curves, each yielding different theoretical curves. An important scientific question is achieving the best correspondence to experimental data. The Geniyev theory inherently includes equations for three components of stress and strain. In contrast, the Eurocode and the Russian Building Code equations are provided for uniaxial stress conditions. This paper presents a comparison of theoretical curves for uniaxial compression based on Eurocode equations, the Russian Building Code, and Geniyev theory with experimental results from tests on prism and cube samples. The analysis includes deviations of the maximum stress points of theoretical curves from the corresponding experimental data. Numerical analysis is provided for both stresses and strains. A distinguishing feature of this work compared to existing research on Geniyev theory equations is that they are presented in a resolute form, incorporating three parameters: concrete compressive strength, tensile strength, and the initial modulus of elasticity. The importance of using secondary resources on the basis of industrial waste is understood by both governments of developed countries and business (production of Portland cement using ground metallurgical slag as a mineral additive at Novotroitsk, Magnitogorsk, Sterlitamak, Katav-Ivanovsk and other plants in the South Urals). The use of secondary raw materials requires the creation of technological infrastructure for processing of secondary raw materials, the costs of which can be quickly recouped due to the cheapness and availability of industrial secondary raw materials and freeing the territory from environmental pollution. In order to recoup the costs of the infrastructure, it is necessary to guarantee full compliance of the quality of pavement elements with the requirements of GOST R 59120-2021. Secondary raw materials have a great variety and laboratory analysis of the quality of pavement elements is required in order to design compositions with the best quality, satisfying all regulatory requirements. In our work the authors present the results of laboratory research and evaluation of the possibility of using clinker-free lime-slag binder based on the mineral product of soda production and metallurgical slags to strengthen and stabilize soils for their use in pavement structures in the construction of roads for various purposes and climatic zones. It is experimentally shown that the addition of lime-slag binder in the amount of 8-10% of the dry weight of both cohesive (loamy soil, loamy sand) and non-cohesive (fine sand) soil allows to obtain reinforced soil with improved strength and elastic-deformative characteristics, which can be used instead of scarce natural crushed stone and gravel in the construction of underlying layers of pavements in the construction and reconstruction of highways. This technology can be used not only in the Russian Federation, but also in a number of other countries, including those with hot dry climates (e.g., the Republic of Egypt).

Lignin-based flame retardant via sequential purification-nanoparticle formation, and N[sbnd]P coupled chemical modification

A nonhalogenated and ecofriendly flame-retarding material was developed using lignin, one of the main components of lignocellulosic biopolymers. Lignin was purified, dissolved, and formulated as nanoparticles and implemented after processing in an ecofriendly water-based γ-valerolactone (GVL) system at different concentrations. Nitrogen‑phosphorus sequential chemical modification was performed using polyethyleneimine (PEI) and phytic acid (PA), The char residue increased by ≥10 % compared with lignin nanoparticles (LNPs). A 10 wt% lignin-based flame retardant (L-FR) based on the weight of cotton fabric was introduced using a simple dipping method. Compared to existing cotton fabrics, the combustion time of L-FR treated cotton fabrics was reduced by 6.8 s. The maximum flame height was reduced by 5.4 cm, and the charcoal residue increased by 25 %. The flame-retarding mechanism of L-FR involved low-temperature dehydration, thermal decomposition of cellulose by the phosphorus component of PA and generation of expansive gas by the nitrogen component of PEI. These results showed that lignin-based raw material processing, polymer processing, and chemical modification were biomass-based, suggesting that lignin could be converted into an ecofriendly flame retardant, highlighting the feasibility of high-value-added lignin.

Role of mineral elements in the nutrition of garden strawberry plants

Relevance. The increase in global production of garden strawberry fruit is due to the high demand for the products for fresh consumption and as raw material for processing. The leading countries are: PRC, USA, Turkey, Egypt, Mexico, Spain, Russia, Poland, South Korea, Brazil. Increase in production volumes is provided due to high productivity of new varieties and intensification of strawberry cultivation technologies and, in particular, plant nutrition. The possibility of managing the nutrition of garden strawberry plants is one of the priority tasks from the solution of which depends on the realization of the potential of plant productivity, as well as the quality of the resulting products The role of many macroand microelements in plant nutrition is not fully understood. Numerous studies are conducted to identify the mechanisms of their absorption and movement in strawberry plants. New forms of fertilizers are being studied, allowing to effectively influence the processes of growth and development of plants, minimize the impact on the environment.Results. The article is devoted to the review of the role of the main mineral macroand microelements in plant nutrition, such as nitrogen, phosphorus, potassium, magnesium, calcium, iron, silicon, molybdenum. Based on the analysis of literary sources, the influence of certain mineral elements on physiological processes associated with the growth and development of garden strawberries is considered. The data on reaction of plants to the optimal content, excess and deficiency of certain elements, possibilities of their receipt and assimilation by plants of garden strawberries are given. Application in practice of the world experience on management of mineral nutrition can significantly improve the existing technologies of strawberry cultivation in open and protected ground.

Multi-response kinetic modelling of the formation of five Strecker aldehydes during kilning of barley malt

Control of aroma formation during production of barley malt is critical to provide consistent and high-quality products for the brewing industry. Malt quality can be affected by the inherent variability of raw material and processing conditions, leading to inconsistent and/or undesirable profiles. Dried green malts were cured isothermally at 65, 78 and 90 °C for 8.4 h, and characteristic aroma compounds (Strecker aldehydes), precursors and intermediate compounds were analysed over time. By kinetic modelling of Strecker aldehydes, based on fundamental chemical pathways, we showed that degradation of Amadori rearrangement products and short-chain dicarbonyls was more sensitive to temperature change due to their higher activation energies compared to other kinetic steps. This study can help maltsters to manipulate formation of Strecker aldehydes, via raw material screening and process control, and hence optimise the organoleptic quality of malts and their products, such as non-alcoholic beers, where these aldehydes play a key role.