FOOD TECHNOLOGY
The research is devoted to the study on adaptation, verification and implementation of the method for determining sinigrin in mustard seeds and products of its processing, as well as in other types of food raw materials of plant origin. The relevance of the research is determined, on the one hand, by the need to control sinigrin in the technological processes of mustard processing, and, on the other hand, by the lack of effective standardized methods for determining sinigrin in the Russian Federation. The aim of the research is to modify and (or) adapt the most effective methods for the identification and quantification of sinigrin, presented in the publications of foreign researchers. The objectives of the study included construction of calibration graphs; modification of the sample preparation technique to reduce the complexity and duration of the analysis while maintaining the required parameters of accuracy and reproducibility; adaptation of the analysis method using high performance liquid chromatography; verification and approbation of the proposed method using real production samples, i.e. mustard seeds.
High performance liquid chromatography has been used as the basic method.
As a result of the research, the sample preparation technique has been modified. It has made it possible to reduce labor intensity and reduce the time for its implementation while maintaining the required metrological characteristics. The calibration dependence has been determined and a method for the identification and quantitative analysis of sinigrin in raw materials of plant origin using a high-performance liquid chromatograph equipped with a diode array and mass spectrometric detectors proposed. As a result of verification, the metrological characteristics of the proposed method have been determined: the measurement range is from 0.0005 to 10%, the accuracy index is ± 0.01%. The method has been tested on real objects, mustard seeds, which are the main sources of sinigrin. The proposed method for the identification and quantification of sinigrin can be recommended for use in research and production laboratories equipped with the necessary measuring instruments and testing equipment.
The article considers issues related to identifying the most suitable varieties of apples of technical maturity of summer and autumn – winter varieties growing in the Republic of Adygea and the possibility of their use in the technological process of cider production using champagne yeast races. Local apples are in demand both in food and processing industries and among the population. This is due to their unique chemical composition. Technological maturity of experimental varieties of apples have been studied and assessed for a number of technological indicators. The article presents a comparative description of summer and autumn-winter varieties of apples that have reached technological maturity. The study has revealed that autumn-winter varieties of apples are the best for the production of cider. The possibility of using champagne yeast races in the technology of sparkling cider production has been investigated and proved. A significant influence of yeast races on the formation of aroma and taste has been established. According to the literature data, various biochemical processes occur during the fermentation process with a change in the main components of the wort, the formation and synthesis of new compounds that are involved in the formation of aroma and taste. Apple wort fermented with 7–10 Champagne race differed from the control sample and the Novotsimlyanskaya-3 race in a more harmonious taste, fresh and expressive aroma.
At present, the main task of the agro-industrial complex of the Russian Federation is to use of local raw materials for the development of new technologies that meet the needs of the population. The results of the experiment have shown the possibility of using autumn-winter varieties of apples growing in the Republic of Armenia in the cider production, and also has made it possible to justify the use of champagne yeast races in this technology to obtain wine materials with high organoleptic characteristics.
These studies allow to improve the technological process of cider production.
The relevance of the analysis of scientific publications devoted to the study of the composition, properties, methods of preparation, areas of application, as well as the qualitative and quantitative identification of glycolipids is determined by the prospects for their use as alternative natural surfactants. Glycolipids possessing comparable surfactant properties with widely used surfactants of a petrochemical nature, and distinguished by the absence of toxicity and environmental friendliness, exhibit pronounced physiological and functional properties.
Currently, there are no systematic data covering various aspects of the composition, physicochemical properties of glycolipids.
The purpose of this research is to clarify the classification of glycolipids, to summarize data on the advantages and disadvantages of various industrial methods for obtaining glycolipids; systematization of data on the properties of glycolipids by application; identification of the most effective methods for the qualitative and quantitative identification of glycolipids.
Particular attention is paid to the analysis of data on the possibility of isolating glycolipids from plant materials, including secondary resources of the oil and fat industry.
The data presented in the review indicate that glycolipids, including those isolated from plant materials, are characterized by a high biotechnological potential for their use in the creation of pharmaceuticals, cosmetics, and functional foods.
Of the known methods for the industrial production of glycolipids, currently the most common and cost-effective methods are those based on microbiological and enzymatic synthesis.
Promising raw materials for the production of glycolipids are secondary products of processing of oilseeds – phosphatide emulsions and phosphatide concentrates containing up to 5% glycolipids in their composition. There are currently no methods for obtaining glycolipids from this type of raw material.
Of the known methods for the qualitative and quantitative identification of glycolipids (TLC, HPTLC, HPLC, NMR), the most promising method is high-resolution NMR spectroscopy, as it is the most informative, rapid and accurate.
One of the main requirements for young wines is preservation the qualities of the grapes, including the bright varietal aroma characteristic of essential oils concentrated in the grape skins. At the same time, in the formation of the aroma of wine, substances synthesized by the enzyme systems of yeast cells are involved in the process of alcoholic fermentation. The main factors influencing the formation and ratio of aroma-forming substances in wine are the composition of the substrate, the race of yeast and the conditions for the fermentation process. Therefore, studies of the influence of the conditions of the fermentation process in the production of young red wine materials on the chemical composition of the aroma-forming components of wine are relevant. The analysis of the data obtained indicates the influence of the methods of carrying out the alcohol process on the content of aroma-forming compounds: aldehydes, ketones, higher and polyhydric alcohols, esters and fatty acids. It has been shown that the fermentation of the pulp wort, unlike carbon dioxide maceration, leads to a greater accumulation of oxidation products: acetaldehyde, acetoin and diacetyl, and also contributes to a higher content of higher alcohols. Under conditions of carbon dioxide maceration, a significant accumulation of aromatic alcohol – phenylethanol occurs. The conducted studies have shown that the use of carbon dioxide maceration using the Moldova grape variety generally has led to a significantly lower formation of oxidation products of both wort components and fermentation products. The additional introduction of carbon dioxide contributed to a decrease in the RH potential of the fermenting wort, which stimulated the accumulation of substances in a reduced form. At the same time, the content of esters in the case of artificial maceration is higher than under normal conditions, which indicates more intense enzymatic esterification reactions.
It has been established that carbon dioxide maceration, in comparison with the classical processing of grapes, contributes to a greater formation and extraction of favorable aromatic components, and the additional introduction of carbon dioxide enhances this process.
Olive oil is a valuable food product, a source of monounsaturated fatty acids, antioxidants, including polyphenolic nature, as well as terpenes and phytosterols. The high cost, along with the demand for special dietary properties, makes olive oils an attractive target for counterfeiting, most often done by diluting olive oil with cheaper sunflower and rapeseed oils. Considering that traditional indicators of identification of vegetable oils do not allow to detect such falsification; it is relevant to search for new objective indicators and methods for identifying olive oils. The purpose of the research is to justify the use of triacylglyceride profile for identification and detection of falsification of olive oils. The objectives of the research include the selection and adaptation of an effective and affordable method for determining the triacylglyceride profile; identification of reliable markers of identification and falsification of olive oils, carried out by diluting them with sunflower or rapeseed oils; establishing dependencies that allow determining the amount of sunflower or rapeseed oil mixed with olive oil. Gas chromatography with a flame ionization detector has been used as the main research method. Based on the studies carried out, the method of gas chromatography with a flame initiation detector has been adapted for the analysis of the triacylglyceride profile of olive, sunflower and rapeseed oils, as well as their mixtures. Markers have been established that make it possible to unambiguously identify the falsification of olive oil by diluting it with sunflower or rapeseed oil. Calibration graphs and dependencies are proposed that allow you to set the amount of sunflower or rapeseed oil in a mixture with olive oil.
Ensuring food safety of the quality of sold products is one of the urgent problems of the wine industry. The trend of falsification of well-known brands of domestic and imported wines is a characteristic feature of the modern market of wine products. Known methodological bases for assessing the quality of wine products in most cases do not have the potential to recognize many modern «technological solutions». To solve this problem an analytical method can be proposed on modern equipment "FTIR BACCHUS 3". This analyzer allows you to determine the chemical substances and the range characteristics of these substances. This method has been chosen for the identification of wine samples and not by chance, when using it, the analysis time is significantly reduced, and the range of chemical elements determined by the analyzer is quite wide, and reagents are not needed for this equipment. The method does not require preliminary preparation of samples; it is also quite new, not popular in Russia. The article presents a comparative review of classical wine identification methods. The presented material indicates the relevance of creating a database on the chemical composition of wines that determine their authenticity using new instrumental techniques. The proposed multi-parameter wine analyzer FTIR BACCHUS 3 is a system for the analysis of worts and wines using chemometric methods, based on the acquisition of the mid-IR spectrum (FTIR). The method is based on chemometrics, i.e. obtaining chemical data using mathematical methods of data processing and extraction, which will increase the reliability of assessing the authenticity and place of origin of wine products.
The article is devoted to the research in the field of the use of frozen grapes in the production of functional products. The main tasks are to substantiate the technological significance of frozen table grapes for the development of recipes for functional products and to investigate the influence of negative temperatures on the change in the quality indicators of raw materials. The objects of the research are 5 table varieties of grapes grown on plantations of the peasant farm of the Dinskoy district of Krasnodar. At the Department of Technology of Storage and Processing of Crop Products of the Kuban State Agrarian University named after I.T. Trubilin, experimental studies of the qualitative characteristics of fresh grapes have been carried out in order to study and confirm the prospects for using frozen grapes for the production of functional products. To perform the research, standard physicochemical and organoleptic methods of analysis, generally accepted in the food industry, have been used. The grape berry is a source of nutrients that the body needs to maintain a full and active lifestyle when consumed fresh: anthocyanins, pectins, vitamins and minerals.
The disadvantage of replenishing these nutrients is the short period of consumption of fresh grapes. To study the technological qualities of grapes, varieties with different ripening periods have been studied.
Freezing as a preservation method allows these products to be consumed throughout the year. The methods of physical and chemical analysis have been used to determine the indicators of the biochemical composition of fresh and defrost grapes, confirming their biological and nutritional value. It has been established that shock freezing of grapes with subsequent defrosting allows preserving biologically valuable components of the chemical composition of the objects under study, which makes it possible to develop healthy food products from frozen table grapes.
In the modern world the food industry faces the main task of providing the population with high-quality food. The use of non-traditional types of raw materials in order to enrich the category of everyday products will contribute to solving this problem. The development of recipes and the introduction of new types of bakery products into production will contribute not only to expanding the range, but also to providing the population with a healthy diet. The presence of bakery products in relatively large volumes can be noted in the diets of different categories of the population. The main component of a healthy nutrition policy in the field of PPRS production is the development of new recipes and improved technologies for food products enriched with safe non-traditional raw materials that are carriers of essential nutrients. These issues are relevant for the improvement of all categories of the population. At the same time, the quality indicators of finished bakery products must comply with existing requirements.
The object of the research is the recipe for rye-wheat bread with the use of oat flour. An important activity of the bakery industry can be identified as the use of non-traditional raw materials in unified recipes for finished products, which contributes to the expansion of the bakery market. One of the most important tasks solved by the baking industry is the inclusion of high-quality and safe products of everyday use in the diet of different categories of the population. The solution of the task will be facilitated by the use of promising types of raw materials, characterized by a variety of chemical composition and favorable technological properties.
The purpose of the research is the use of non-traditional raw materials in the form of oat flour to develop a recipe and technology for the production of rye-wheat bread with improved properties and quality indicators.
The main aspect of the research work is to determine the effect of oatmeal on the quality indicators of semi-finished products based on thick rye sourdough, the study of the organoleptic properties of products, and the choice of dosages of oatmeal. The degree of influence of different amounts of oatmeal on the physicochemical parameters of rye-wheat bread has been revealed, and the shelf life of product samples using oatmeal established in the course of the research.
ECONOMIC SCIENCES
The article is devoted to the problematic issues of the implementation of municipal-private partnership practices and the prospects for its development. The author of the article proposes a revision of those areas where MPP can be successfully implemented, and the expansion of their spectrum. It is noted that the area which is undeservedly ignored by local authorities in the context of attracting private partners is cultural and leisure services. The sphere of tourism is also highlighted as promising in this context. The problem of a high level of bureaucracy and the cumbersome procedures of municipal-private partnerships has been identified; it was determined that the problem of lack of awareness and qualification of private partners remains relevant. According to the authors, formation of a training system, creation of educational programs, hotlines and information centers, communication channels for communication with representatives of the commercial sector are promising. The authors of the article have come to the conclusion that it is necessary to reform the system of financial regulation of PPP mechanisms by intensifying the practice of investing in infrastructure bonds and expanding the list of special economic zones. The problem of regional inequality in relation to the ongoing PPP projects has been highlighted, which requires a restructuring of approaches to the territorial diffusion of PPP projects. A problematic aspect of PIL is, among others, the lack of separate tools and practices for monitoring the effectiveness of partnerships. The prospects of joint efforts of municipalities and private business in the field of achieving sustainable development goals and implementing joint projects in the areas of waste processing, water treatment, etc. have been proposed.
AGRICULTURAL SCIENCES
Planning works on the study of coblnut (hazelnut) requires establishing the sample size, taking into account the magnitude of the error and the significance of the results. Such studies have not been carried out in full with regard to plant varieties, taking into account modern requirements. The purpose of the research is to determine the sample size for calculating the value of selection traits of nuts in hazelnut varieties with different error rates and significance levels. For this purpose 12 main economically valuable breeding traits of nuts have been studied in 8 varieties – taste, weight, indestructibility, kernel yield, the presence of husks on it, strength and color of the shell, nut weight, one-dimensionality of fruits in size and shape, overall score. A well-known method has been used to calculate the sample size for evaluating each indicator with different relative and absolute errors for different levels of significance. The largest contribution to the overall maximum score of 59 points is made by the core indicators: taste – 25.42%, weight – 22.29%, indestructibility – 16.9%, yield – 11.31%. The share of other features is estimated at 2.25 – 6.78%. For a relative estimate of 5% accepted in Biology the estimated sample size for weight indicators was at a significance level of α = 0.05 / α = 0.1: walnut weight 30/21, kernel weight – 43/30 nuts; scoring indicators: shell color – 18/13, shell strength – 22/16, presence of husks on the kernel – 137/95, indestructibility of the kernel – 27/19, taste of the kernel – 25/17, total score of the selection category – 11/7 nuts. For indicators expressed as a percentage for α = 0.05: kernel yield with an error of 1% – 98, damaged by diseases, pests with an error of 10% – 62, one-dimensional in size with an error of 10% – 57, one-dimensional in shape – with 10%, error – 54 hazelnuts.
Walnut (Juglans regia L.) is a particularly significant plant for humans in terms of its useful properties and in the Russian Federation it can be attributed to the most valuable introducers for forestry and horticulture. It is grown in many countries of the world and the area of its cultivation is constantly expanding. Breeding species for food purposes requires a selection assessment of the quality of its fruits. For this, at different times, appropriate methods were developed and the existing gene pool of the culture was assessed. By now, new varieties and forms have been bred and brought, which also need to be evaluated for rational use for scientific and practical purposes. The descriptions of varieties and forms of walnut often contain insufficient information about all selected traits, which requires the development of new models to assess the variety fund using incomplete data. The purpose of the research is to develop the missing models of selection evaluation using incomplete data and evaluate the world walnut variety fund in terms of fruit quality, to identify varieties and forms of the highest quality category. The well-known methodology and new models have been used for the evaluation. When developing evaluation models for incomplete data, a database of 50 varieties evaluated for all indicators has been used. Using the method of excluding individual indicators, the corresponding multiple regression models have been calculated on its basis, taking into account a different combination of features. The licensed programs Stadia 8.0, Microsoft Excel have been used in the research. The proposed models provide an estimate with an average error of ± 0.48 – 3.72 points at R2 = 0.63 – 0.99. A promising walnut gene pool from 23 countries has been assessed, 69 representatives with fruits of the breeding category of the highest quality identified, and a list of them compiled. Of the 512 ancestors, 19.73% had the selection category of fruits of the highest quality, 62.88% of high-quality fruits, 16.80% of ordinary fruits, and 0.59% of varieties and forms of low-quality fruits.
The article presents the results of a long-term assessment of the adaptive potential of breeding forms of tea plants cultivated in the natural and climatic conditions of the North-Western Caucasus (the Republic of Adygea) in order to select the most promising samples from the existing gene pool and use them to breed local highly adaptive varieties. In the course of studying adaptability, generally accepted methods have been used, including the «Program and Methodology for the Study of Fruit, Berry and Nut Crops», 1999 and «Determining the Resistance of Fruit and Berry Crops to Cold Season Stressors in Field and Controlled Conditions», 2002. Meteorological and climatic features of the tea growing area have been analyzed, weather conditions compared with the biorhythms of introduced plants, their influence on the state and productivity of tea noted. Correlation relationships between the temperature factor and the onset of the development phase of tea plants have been characterized. As a result, data have been obtained on the winter hardiness of the studied forms for various components, resistance to excess and lack of heat, and the characteristics of the growth and development of tea plants in various weather conditions and against the background of various regeneration processes have been analyzed. To accelerate the determination of the viability of the conducting system, the authors carried out the growth of damaged shoots at room temperature and presented in the article the results of observations that made it possible to see hidden local tissue damage and characterize their types. The most adaptive forms are AF-3 and AF-5, which show the best resistance to damaging environmental factors, have a high regenerative capacity and can provide a good harvest of green tea leaves for the sustainable development of tea growing in Adygea.
The article presents the results of the economic and bioenergetic assessment of winter barley cultivation methods for harvesting bulky fodder. In a short-term experiment the effect of five levels of mineral nutrition on two methods of tillage in the crop rotation link soybean – winter barley, on fused leached chernozems of the southern foothill zone of Adygea has been studied. Differentdepth methods of tillage have been used for 20–22 cm (plowing) and 12–16 cm (surface tillage). As a background on the variants, the main fertilizer ammophos and ammonium nitrate have been used as top dressings (N30; N45; N60). It has been revealed that the use of surface treatment reduces the yield of winter barley green mass by 21-41%. The average yield varied from 8.8 for surface tillage to 12.8 t/ha for plowing. The highest level of productivity is 19.2 for plowing and 12.0 t/ha for surface treatment. It has been revealed that the green mass of the studied varieties of winter barley in 1 kg of natural feed contains, on average, from 0.42 to 0.605 EFU (energy feed units). Analysis of the nutritional value of the obtained green mass has shown: in 1 kg of dry matter of feed for plowing: crude protein 10.1%, exchange energy 11.72 MJ, feed units (Ke) 1.12; for surface treatment – 8.8%, 11.72 MJ, 1.13 (Ke). The highest yield has been formed according to the cultivation method, with the introduction of 60 kg of a.i. N by background (N24 P104) – by plowing. The most profitable plowing option is: Background + N60 (Romans variety), with a yield of 19.2 t / ha, the profit from the sale is 10603.8 thousand rubles, the profitability level is 58.3%. Bioenergetic assessment of cultivation methods has shown that for each unit of energy invested in the production of winter barley green mass, on the best options, from 2.75 to 2.92 units of energy have been obtained.
The number of soil microorganisms affect the fertility of the soil and the processes occurring in the soil microflora. An urgent research problem is the rationale for the use of intensive technologies for the cultivation of sweet corn using progressive methods for obtaining a highly productive crop based on the principles of resource conservation, biologization and ecologization. The purpose of the research is to study the toxicity and biological activity of the soil after sowing sweet corn. The tasks are to determine the biological activity and toxicity of the soil, and comparative impact of agricultural practices in the study of soil toxicity. Two-factor experiment in quadruple repetition. The experiments were carried out on the farm enterprise of Popov S.A., the Chernoyarsky district of the Astrakhan region. The research period was 2009…2015. Determination of biological activity and toxicity was carried out at the beginning of the research in 2009 and 2015. According to the assessment of the intensity of the destruction of cellulose on O.E. Pryazhnikova’s scale biological activity was characterized as strong. A close correlation dependence on experience factors was noted, the relationship between the signs was high and direct. When determining the toxicity of the soil, we came to the conclusion that at the beginning of the research favorable conditions for the development of the studied crop were formed on soils cultivated by moldboard cultivation. According to zero tillage, an increase in soil toxicity was observed, which was expressed in a decrease in seed germination, the mass of seedlings. Revisited in 2015. Soil toxicity after zero tillage decreased in all variants, seed germination increased, on average, by 5...8%. As a result of the accumulation of plant residues on the soil surface, an upper humus layer was formed, leading to a constant penetration of ai r into the soil.
Currently, one of the tasks facing breeders is the creation of new varieties in terms of their economically important characteristics, close to the developed models of the «ideal variety». The main purpose of the research is a comparative analysis of economically important indicators of a new AGU 75 variety of wintering oat of the dual direction, and the compliance with the parameters of the idiotype for further use as a genetic source. The basis for this approach was the study of the variety in the nursery of competitive variety testing in the period of 2000–2015. The studies were carried out in the soil and climatic conditions of the southern foothill zone of the North-Western Caucasus according to the generally accepted methods and agrotechnics of cultivation. As part of our research we used long-term experimental data from field observations and records, laboratory studies, and the biochemical composition of grain. The article gives an assessment of the duration of the growing season, winter hardiness, yield, resistance to lodging and major diseases (crown and stem rust, septoria, head smut) of the AGU 75 variety in relation to the idiotype. A comparative analysis of the elements of the crop structure (productive tillering, panicle length, number of spikelets, number of grains, grain weight per panicle, grain weight per plant, weight of 1000 grains) of varieties and models was carried out. The content of fat and protein, as well as the filminess of the grain of the analyzed variety and ideal type, were determined. Based on the comparative analysis of economically useful traits of AGU 75 variety, the degree of their compliance with the previously developed optimal parameters of the wintering oat model variant was revealed. The expediency of using AGU 75 variety as a source of valuable traits in breeding work to increase winter hardiness, productivity, resistance to lodging and diseases, early maturity, shattering, filminess, as well as elements of the crop structure – productive tillering, grain weight per plant was experimentally confirmed.
In agrotechnologies for the cultivation of field crops, plant growth regulators, as well as microbiofertilizers can have a beneficial effect on soil microflora, without leading to environmentally unfavorable consequences for the biosphere. The economic efficiency of the production of grain crops, in particular, winter wheat, is also significantly increasing. The article presents the results of many years of research on a comprehensive study of adaptation parameters, innovative elements that exist today in relation to the technology of growing winter wheat in the foothills of the Republic of Adygea. Namely, preparations intended for the fullest possible disclosure of the yield potential of the cultivated crop, Alfastim, Agrostimulus growth stimulants and Ecobacter- Terra microbiofertilizers. The objectives of the research are to study the directions and extent of the impact of micro-, bio-fertilizers and plant growth regulators on the sowing qualities of winter wheat; establishment of characteristic changes in the subsequent processes of growth and development of culture due to the use of the studied drugs; identification and analysis of data on the yield of winter wheat treated with the studied preparations; comprehensive assessment of the effectiveness of the use of Ecobacter-Terra microbiofertilizer and Alfastim, Agrostimul growth regulators in the process of growing winter wheat. As a result of the research, it has been proved that in the conditions of the foothills of Adygea, when growing winter wheat, it is considered profitable and economically justified to apply nitrogen fertilizer at a dose of N70 in the early spring, along with the use of Alfastim growth regulator in the form of seed treatment 25 g/t + crops in the phase tillering 25 g/ha + crops in the heading phase 25 g/ha). These elements of cultivation technology make it possible to increase the yield up to 7.35 t/ha (+0.83 t/ha to the control) and receive an additional net income of 7732.2 rubles/ha.
The studies were carried out on the equipment of the «Expert» Common Use Center of FSBEI HE «MSTU».
Obtaining high yields of agricultural plants with their proper quality on soils contaminated with heavy metals is of the utmost importance for modern farmers of the Kuban. The purpose of the research is to study the accumulation of heavy metals in the vegetative organs of pumpkin plants, depending on the properties of the soil and the physical and chemical properties of pollutants. The tasks are to determine the influence of the physical and chemical properties of the soil on the accumulation of heavy metals in the vegetative part of the studied plants; to determine the influence of the chemical properties of heavy metals on their accumulation in the vegetative part of the studied plants. By the method of field research, the accumulation of heavy metals in the vegetative mass of pumpkin, Mramornaya variety, when applied by sprinkling method, depending on the physico-chemical properties of the soil, has been studied. Heavy metals in plants are determined by the AAS method. It has been found that when growing the studied plant on a rain-fed plot of meadow-chernozem soil, copper and cadmium accumulated in the foliage less than in the soil of rice check, respectively 2.2 and 4.9 times. The studied heavy metals had a depressing effect on the biometric parameters of the pumpkin. On the experimental plots of meadow-chernozem soil of the bogarny plot and the soil of the rice check, there was a decrease in the studied biometric parameters compared with the control. Moreover, on the meadow-chernozem soil of the rice check, this decrease was more intense. Under the influence of heavy metals and soil properties, the yield of the studied plant decreased: for the first variant it was 24.0 t/ha, for the second – 8.2 t/ha. When growing Mramornaya pumpkin variety on meadow-chernozem soil, a rain-fed area of cadmium accumulated more than copper by 16.0 times, on meadow-chernozem soil of rice check, this difference was 47.0 times. One of the reasons for this difference in the accumulation of heavy metals is their physiological role for the plant under study.
The growth of industrial and agricultural production, against the backdrop of an increase in the population on the planet, requires an increasing amount of energy. Currently, quite a lot of options for its production are known: thermal and hydroelectric power plants, the use of solar energy (solar batteries), wind, etc. The nuclear power industry continues to develop at a fairly high pace. After the accidents at the Chernobyl nuclear power plant and in Japan, Fukushima 1, a wave of radiophobia rose around the world. But life is taking its toll, and nuclear power plants have already been built or are being built in Belarus, England, China, and so on. Reactors for nuclear power plants are being modernized, but there are no guarantees against accidents. In this case, pollution of various territories, including agricultural land, is possible. The performed scientific work makes a significant contribution to the solution of an urgent problem, i. e. the return of radioactively contaminated fertile lands to agricultural production. The purpose of the research is to study the migration and accumulation of 90Sr in the litter in the orchard, depending on the location of the nuclide in the soil. To achieve the goal of the research, the following tasks have been set: to determine the specific activity of the foliage, bark and wood of the apple tree for the research option with the surface location of the radionuclide on the soil; to determine the specific activity of the foliage, bark and wood of the apple tree for the research option with a buried location of the radionuclide in the soil by 50 cm. To solve the tasks, the field method was used, the radionuclide content in the plant was analyzed on the USK GAMMA Plus device with a beta tract. When the radionuclide is located in the upper part of the soil, the bark of the fruit plant will make the greatest contribution in terms of radiation, followed by leaves and wood. The greatest accumulation of the radionuclide in the second variant of the experiment occurred in the leaves. The difference in the specific activity of 90Sr between foliage and bark in 2016 was 2.0 times, between foliage and wood – 2.2 times. It was established that the studied variants of the experiment had an impact on the accumulation of the pollutant in the plant litter.
ISSN 2713-0029 (Online)