Статьи журнала - Вестник Воронежского государственного университета инженерных технологий
Все статьи: 2471
Статья обзорная
The current trend in food packaging technology necessitates the development of novel packaging materials in order to extend the shelf life of food and reduce spoliation. To preserve the food product, the construction material of the packaging played a key role.In the emerging field of food packaging technology, using biobased plastics for food packaging shown a comparative advantage.At this moment, bioplastics have shown measurable benefits and are receiving more and more attention from business organizations, political figures, scientific communities, and in the whole public. This was as a result of looking for new plastic profiles brands. Besides, the environmental impact(ecological concerns) of convective materials, the depletion of natural resources specifically the petrochemical, and consumer concerns have necessitated alternative bio-based food packaging items. Therefore, the aim of this study was to review the properties of food packaging materials such as thermal, mechanical, barrier, surface, antimicrobial, optical, and environmental, as well as their synthesis type and applications. The cellulose and starch components of the common agricultural wastes for the synthesis of biopolymers were elaborated. In addition to that, different microalgae species were justified in the manufacturing of bio-based plastics.This review article also included examples of sustainable filler and reinforcement materials used in the food packaging industry. Therefore, this review work contributes to opening up the entire body of scientific knowledge on bio-based plastics used for food packaging and helps to develop important results for further investigation.
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Foodborne illnesses caused by tissue parasitic protozoa
Статья научная
Zoonotic infections caused by Sarcocystis species, known as intestinal sarcocystosis, are an example of foodborne illnesses that occur due to the consumption of contaminated meat. Zoonotic Sarcocystis parasites, specifically those hosted in cattle and swine meat, have been reported as the sole causative agents of human intestinal sarcocystosis. The infection’s symptoms include nausea, diarrhea, vomiting, and abdominal pain. Talking about zoonotic parasites goes hand in hand with discussing the parasite life cycle, animals that act as natural intermediate hosts, and humans who act as the natural definitive host for the parasite. To safeguard cattle and swine meat consumers, the government of Rwanda, through the Rwanda Inspectorate, Competition, and Consumer Protection Authority (RICA), has banned the sale of meat that has not been refrigerated for at least 24 hours and reached a temperature between 2oC and 4oC before sale in order to prevent the transmission of zoonotic and transmissible diseases. Based on various literature reports, zoonotic sarcocyst viability remains intact in this range of temperatures for a period of 24 hours. Given that the prevalence of swine coccidia in Rwanda was reported to be 55.8%, Coccidia may not only include Sarcocystis species. The established rule may not be contributing to the prevention of zoonotic sarcocystis parasite infection but it is a preventive solution for many other zoonotic parasites and pathogens. Due to the lack of research reports on zoonotic sarcocystis in Rwanda, there is limited knowledge about these parasites in the country. This lack of information may explain why the prevention and control measures taken to address zoonotic pathogen infection do not adequately address the issue of zoonotic sarcocysts. Though the parasite infection was reported to be negligible, it may induce reduced human food availability in the food production system due to the ability of the disease to be transmitted from humans to cattle and pork. These later animals' meat is prestigiously served as human food in Rwanda.
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Статья научная
Investigation of some toxic compounds concentrations in aerosol of new class of tobacco products - tobacco heating systems and comparing their levels with regular cigarettes aerosol is an important step in understanding whether these products are low-risk, as some manufacturers claim. Three popular in Russia cigarette brands, reference cigarette 3R4F and new heated tobacco products (HTP) were tested for levels of emissions of some harmful and potentially harmful constituents (HPHC). Aerosols of these products were collected under the ISO intense smoking regime and quantified for levels of N'-nitrosonornicotine, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, acrolein, acetaldehyde, formaldehyde. Levels of above mentioned HPHCs were measured by the high-performance liquid chromatography / mass spectrometry (HPLC/MS-MS). The results demonstrate that highest levels of measured HPHCs are obtained for reference cigarette 3R4F. As for popular in Russia cigarette brands their levels vary greatly and for some compounds can be very close to levels of 3R4F aerosol. Levels of all measured HPHCs in aerosol of HTP were significantly lower compared to all cigarettes. This can be explained by specific mechanism of HTPs aerosol formation without pyrolytic and pyrosynthetic reactions which are typical to all combustive tobacco products due to their high temperature of the process.
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Machinability of stainless tool steel using nitrogen oil-mist coalant
Статья научная
For all dry machining process, temperature generated in the cutting zone is the major challenge. It causes tool failure and results in unsatisfactory surface finish. Application of flood coolant method during machining processes can significantly reduce the temperature and consequently extend the cutting tool life. However, it has serious concerns regarding environmental pollution, operator health and manufacturing cost. These issues are usually attempts to be overcame by using minimum quantity lubrication (MQL) technique. This method merges the advantages of both dry cutting and flood cooling by spraying a small amount of lubricant to the cutting zone using vegetable oil. In this paper, another technique is proposed in order to further enhance the machineability of the stainless tool steel (STAVAX ESR 48 HRC). This involves using of nitrogen gas (N2) and air as cooling medium in combination with oil mist lubricant (MQL). The results show that the combination between nitrogen and oil-mist lubricant much more prolonged the tool life and improved the surface finish than the air-oil mist lubricant medium.
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Microgreens: a newly merging product, aspects, prospectives, and disadvantages
Статья научная
In this article we demonstrate the connotation of microgreens, the newly merging product in the Russian market. Microgreens are normal plants planted in highly density on a substrate medium and harvested shortly after the first true leaves appear. Microgreens of many aromatic plants possess intensive flavour similar to its mature product. We also expound the aspects related to this product, including growth, harvesting time, Seeds utilization, light requirements, available suitable substrate, as well as the disadvantages related to its production. There is still a lot of controversy about the health benefits of consuming microgreens. Some researchers believe that there is currently not enough scientific evidence to support a higher nutrient level in microgreens than in mature plants. In this review, we discuss whether microgreening is a great addition to gardening or not. Still, other prospects for the future of this product indicates that the demand of the market for the microgreens will be strong especially with the wide spread of home-growing facilities like phytotrons and simple growing chambers.
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Статья научная
Food waste/spoilage caused by microbial cell has recently emerged as a major food insecurity and environmental concern. Additionally, food spoilage contributes to the economic crisis and healthy problems. As a result, an active packaging system is still required to keep the food safe and to protect its quality from foreign contaminants. The purpose of this review was to summarize the current solutions and difficulties of antimicrobial compounds in composite food packaging applications. Specifically, the extrusion and antimicrobial coating methods for incorporating antimicrobial compounds into packaging systems and their optimum processing parameters for common polymer composites were revealed. The common inorganic and organic antimicrobial substances/compounds with their quantities adding to the packaging system and their antimicrobial activity (reduction, partially deactivation and completely deactivation) were presented. The difficulties in creating a package with antimicrobial properties concerning issues of migration of antimicrobial additives from the package to the food product, accumulation of antimicrobial additives in the food product, as well as their processing temperature were elaborated. Therefore, this review work contributes to open up the entire scientific knowledge on antimicrobial compounds used in polymer composite materials for food packaging application and helps to develop important results for large scale operations
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Статья научная
Cysticercus bovis and macroscopic Sarocysts detected from bovine meat look similar and specific identification of each of these cysts is important for addressing proper preventive, and control measures of tCysticercosis and Sarcocystosis diseases.Therefore, it is sometimes a challenge for Vets to distinguish these two species of parasites during their daily routine meat inspection using traditional methods. Cysticerci and Sarcocysts are responsible of Bovine Cysticercosis and Cattle Sarcocystosis respectively. These Veterinarians can sometimes make errors in identification of these two parasitic species from Cattle meat muscle tissues. The study was conducted from Abattoir in Russian Federation with intention of the problem addressed confirmation. During laboratory experimental examination, it was confirmed that out of 20 cattle muscles tissues sampled from 20 infected bovines reported to contain cysticerci parasites, 5 out of them were Sarcocysts. Therefore, it is obvious for veterinarians to make errors during their routine cattle meat inspection due to the morphological behaviour of these organisms.
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Research of the technology for the production of modified sulfur bituminous binders
Статья научная
In this article, a review of the literature on the technology for producing elemental sulfur-based paving material was reviewed, and a laboratory test of this technology was conducted at the Department of Highly Viscous Crude Oil and Bitumen. Natural. Attempts to mix sulfur with bitumen to reduce the cost of road construction and sulfur use were undertaken earlier, but the resulting blends did not provide the appropriate quality and the process was difficult to implement. The article proposes a unique technology to obtain not a physical mixture, but the formation of a chemical bond between sulfur and bitumen with the formation of bitumen polymers. This technology becomes possible with the use of a catalyst specially developed by the initiators of the project and has no equivalent in the world practice. And we add that the subject of the production of sulfur bitumen is not a question of actuality on the one hand since 1970, many researchers are interested in this subject but as with the abundance of oil and no one question about alternative solutions, and today with the reduction of traditional oil this theme is really soliciting.
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SWOT-анализ как инструмент оценки социально-экономического развития муниципальных образований
Статья научная
Раскрыт механизм осуществления SWOTанализа социально-экономического развития муниципалитета. SWOT-анализ рассмотрен как метод стратегического планирования, заключающийся в выявлении результатов взаимодействия факторов внутренней и внешней среды социально-экономического развития муниципального образования и разделении их на четыре категории: сильные стороны, слабые стороны, возможности и угрозы. Обозначена роль анкетирования и оценки мнения различных респондентов (населения, предпринимателей, органов власти, общественных организаций) для подтверждения подлинности статистических данных в рамках выделения сильных и слабых сторон, а также возможностей и угроз на мезоуровне. Показан пример формирования ключевых проблем и конкурентных преимуществ муниципалитета, являющихся основой для разработки генеральной цели и стратегических приоритетов долгосрочного развития муниципального образования на основе использования методики SWOTанализа социально-экономического развития муниципального образования...
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Scientific and practical approaches to the development of new-generation confectionery products
Статья научная
A modern progressive direction in the development of confectionery production is the creation of new resource-saving technologies and the development of flour confectionery products with a reduced energy value based on the use of various types of non-traditional and local raw materials. The application of oilseed cake in the food industry makes it possible to enrich products chemical composition with proteins, lipids, dietary fiber, vitamins and minerals. The use of amaranth oil cake as a dry component allows the biological value increase, as it is characterized by a high content of easily digestible protein (18-20%) containing all essential amino acids in sufficient quantities. Recently, special attention has been paid to the introduction of animal fats to the food industry. Bone fat occupies a special place among them. It is produced from bones, regardless of the type of meat from which they were obtained. The application of bone fat allows to enrich foods with polyunsaturated fatty acids, as well as improve the ?-3 / ?-6 ratio of fatty acids in the diet. Taking into account the traditional technology, as well as the properties of amaranth cake and bone fat, the recipe for "Mayachok" gingerbread was developed to adjust chemical and fatty acid composition. The recipe for custard gingerbread with the addition of 15% amaranth oil cake and 11% bone fat to the flour mass in the dough improves organoleptic and physicochemical indicators; to increase their biological value (by 24.5%); to obtain products with the most balanced amino acid composition (amino acid rate for lysine is 44.5%); to balance the ?-3 / ?-6 ratio of fatty acids; to increase the calcium content in products and to normalize its ratio with magnesium and phosphorus - Ca: Mg: P - 1: 0.65: 1.65. The components added improve the structural and mechanical properties of the choux pastry, such as plasticity, elasticity, absorptivity.
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Scientific research on the improvement of commercial banks and application of innovations
Краткое сообщение
It should be borne in mind that the global changes taking place in the world have led to significant innovation changes in financial institutions, one of the main mechanisms in the information economy, and have had a significant impact on the rapid development of the banking sector and the specialization of modern requirements. Proper regulation of market relations has always been a private and public sector. In particular, the study of the globalization processes and the problems that arise as a result of the activities carried out in the banking sector are on the agenda. The elimination of problems in the banking sector and further development and improvement of the service sector will always remain relevant. The new requirements for economic conditions to adapt to the requirements of the modern era come in parallel, respectively. To apply new banking products, strategy and policy based on the bank's marketing service information and materials should be prepared. Bank's strategy and policy should be formulated specifically in the plan for preparation, supply and sale of banking products...
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Simulation of ethylene oxide production from ethylene cholorhydrin
Статья научная
This research has been performed in the Ethylene Oxide production process. It is a flammable and colorless gas at temperatures above 11 °C. It is an important commodity chemical for the production of solvents, antifreeze, textiles, detergents, adhesives, polyurethane foam, and pharmaceuticals. Small amounts of Ethylene Oxide [EO] are used in manufacturing fumigants and sterilants for spices and cosmetics, as well as hospital sterilization for surgical equipment. Modern Ethylene oxide [EO] productions employ either air or oxygen (O2)to oxidize ethylene (C2H4) with a silver catalyst on an alumina oxide carrier[Ag/Al2O3]catalyst packed in a fixed-bed reactor (plug-flow reactor)but the oxygen-base reaction process is more desirable here we used oxygen. Mainly two reactions occur, partial oxidation of ethylene to ethylene oxide and total oxidation of ethylene to carbon dioxide and water. The design models of the process in this research based on a three-part system. They are: the reaction system, absorption system and Ethylene Oxide [EO] purification system. The largest cost in production of ethylene oxide is ethylene therefore, it’s important to optimize the selectivity towards ethylene oxide and thus reduce the consumption of Ethylene. The aim of this work is to create a simulation model of the Ethylene Oxide production process from Ethylene using Aspen Hysys V9. Also to knowing the optimum operational conditions (temperature -pressure -flow rate) for the oxidation reactions of Ethylene. The simulation was running three times with various operational conditions to make a good result. The conclusion was that during operational time the activation energy increased for both reactions which have to be compensated with increasing reactor temperature. At the same time the selectivity for producing Ethylene Oxide decreases, i.e. more carbon dioxide and water are formed. The simulation models yield Ethylene Oxide with purity of 99.2%.
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Simulation of municipal solid waste gasification in fixed bed reactor
Статья научная
The objective of this work is simulating municipal solid waste gasification in fixed bed reactor. A comprehensive process model developed to simulate municipal solid waste (MSW) gasification in fixed bed reactor using an Aspen Plus simulation .To predict and analyze the municipal solid waste pyrolysis and gasification process in an updraft fixed bed more veritably and appropriately, numerical modeling based on Gibbs energy minimization was executed using the Aspen plus software v(9). Rstoic is a block that can be used to simulate a reactor with the unknown or unimportant reaction kinetic that will describe drying section(moisture evaporated).The Ryield model was describe the pyrolysis section, while the Rgibbs model was used for gasification section individually .The proposed model is used to forecast and analyze target performance parameter including syngas composition, lower heating value and carbon conversion rate under different conditions of gasification temperature , and ratios. The results indicate that is a good agreement between data and simulated data obtained using this model .The predicted optimum gasification temperature is about approximately 750°C, and the best ratio of air equivalent ratio is around 0.2 and feed rate 200 kg /hr.
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Статья научная
Gums refer to a type of polysaccharides which are used to increase viscosity and create some other functional properties such as thickening agent, emulsifying agent, stabilizer, crystal inhibitor and so forth. They are classifying based on their nature and originality including, microbial, plant, exudate and animal Gums. This article shortly reviews a group of plant Gums and recent findings in their application. Gums or Hydrocolloids are main compounds which create stability of emulsion via entering into water phase. The importance of these compounds is on viscosity and electrostatic reactions to stabilize nonalcoholic emulsion with below properties; 1) easily soluble in cold water, 2) the lowest amount of viscosity in water, 3) having maximum level of emulsifier amount, 4) no creation of gelling. Diversity and functionality of Gums and regarding their still novelty in food industries have made Gums one of the main additives in food formulations. Since sourced of Gums are different we must focus on using them together to improve their synergistic effect but interactions among them and combined matrixes produced by them also need to be studied in details.
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Статья научная
In this article views the result of analysis of condition of monetary movement on the present stage of development and reveals the main results the tendencies and the regularity of development. In the article provides an overview of monetary movement in Russia in the view of the evolutionary phases, including the dynamics of the last millennium. Displayed the assessment of the money weight in the beginning of the century, during the war, at the stage of the economic imbalances in the planned economy. As the results of the analysis of the main indicators of the dynamics of the money weight during the period of formation and development of a market economy.
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The efficiency of using new brands silica gel for colloidal stabilization of beer
Статья научная
The production of beer that meets the requirements of consumers in terms of quality and price is one of the most important aspects of competition in their sales market. It is known that the quality of the beer is associated with colloidal stability, which is often achieved through the use of different methods, such as chemical, enzymatic and physicochemical methods. Chemical methods are used to reduce the rate of oxidative processes in beer by introducing antioxidants. At the same time, enzymatic methods are often used in the mashing step. They involve enzyme preparations to regulate the levels of protein and carbohydrates (?-glucans and dextrins) in the beer. In breweries, physicochemical methods based on adsorbents that help remove major haze components such as protein and polyphenols from beer are commonly used. Since expensive imported materials such as silica gel and PVPP are widely used in Russia, which leads to additional production costs, this work is devoted to studying the possibility of reducing the costs of beer stabilization by replacing imported silica gels with domestic ones. For the study, we used domestic silica gels manufactured by "Tovesorb" (Russia). In addition, we used silica gels of foreign production Stabifix (Germany) and Britesorb L10 (Netherlands) as a control. The obtained results showed the prospects of using domestic brands of silica gel from "Tovesorb" (Russia), which were not inferior to imported analogues in terms of their adsorption properties.
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Статья научная
White brined cheese is a specific dairy product for Balkan Peninsula countries, Mediterranean, North Africa, Eastern Europe and some parts of Asia. The survey was conducted in 2016 at a dairy industry laboratory in R. of Macedonia. In this research work the influence of three different starter cultures of three white brined cheese variants (A, B, C) has been examined regarding the fat content dynamics. The starter culture in variant А (SMCH-5) contained following bacteria strains: Lb. bulgaricus, Str. thermophilus and Lb. acidophilus. In the variant B (Choozit Feta A) the follow bacteria strains were included: Lac. lactis ssp. lactis, Lac. lactis ssp. cremoris, Str. thermophilus, Lb. bulgaricus and Lb. helveticus. The variant C (MOTC 092 EE) was a combination of the strains: Lac. lactis ssp. lactis, Str. thermophilus, Lb. bulgaricus, Lb. helveticus and Lb. casei. The impact of the above mentioned three different starter cultures was determined over the fat content, рН and SH during the process of ripening of the white brined cheese.
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The influence of innovative development on economic security of the region
Статья научная
Fixed assets are an integral component of the productive capacity of any enterprise. The financial results of the enterprise largely depend on their intensity and efficiency of use. The analysis of fixed assets is usually carried out using an integrated and systematic approach, based on their availability, their movement, efficiency of use (including their active part). In the opinion of some authors, the traditional methods of analyzing fixed assets have a number of shortcomings, since they do not take into account the life cycle of an enterprise, the ecological aspects of the operation of fixed assets, the operation specifics of the individual divisions of a company and its branches. In order to improve the methodology for analyzing fixed assets, the authors proposed to use formalized and non-formalized criteria for analyzing the risks associated with the fixed asset use. A survey questionnaire was designed to determine the likelihood of the risk of economic losses associated with the use of fixed assets...
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The mechanisms of implementation of the state programs in the agrarian sector of economy
Статья научная
Modern studies in the field of public administration confirm the high efficiency and prospects of using targeted programs at various levels. The formation and realization of targeted programs in the implementation of the agrarian policy of Russia allow of solution of the most significant problems of the latter, while observing all planning principles and constantly monitoring the results achieved. The author of this article analyzes the use of targeted programs on the example of the “State Program for the Development of Agriculture and Regulation of Agricultural Products, Raw Materials and Food Markets”. He considers the directions and causes of its changes, the amount of financing aimed at its implementation, the distribution of responsibilities for its implementation and monitoring. The author also compares this program with the similar one at the level of the Voronezh region, identifies and substantiates common features and signs of difference. In addition to the positive aspects, it is indicated that the regional authorities are not yet fully aware of and so do not use the level of independence available to them in the formation and implementation of agricultural policy. The article proves the strategic nature of program-target planning, its specificity and systemic nature, which makes it attractive for public administration. A general conclusion is drawn on the effectiveness of targeted programs as a mechanism for implementing agricultural policy at the national and regional levels.
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Статья научная
Lettuce (Lactuca sativa) is a major leafy vegetable and is commonly used in salad mixes and sandwiches. Therefore, lettuce can contribute significantly to the nutritional content of healthy diets. One specific nutritional problem that needs attention is mineral (e.g., Fe, Zn) malnutrition, which impacts over two-thirds of the World’s people living in countries of every economic status. Also, consumption of salads Microgreens, the edible cotyledons of many vegetables has been gaining popularity as a culinary trend due to its flavor and density of minerals that can be sustainably produced in almost any locale. In this study, the nutrient contents of both mature and microgreen oakleaf lettuce grown on rockwool mat were assessed and compared to each other together with the phytonutrient contents like ascorbic acid, total antioxidant capacity and total phenolic content. Of the 10 nutrients examined (P, K, S, Ca, Mg, Mn, Cu, Zn, Fe, N), lettuce microgreens had significantly larger quantities of all nutrients than mature lettuce except for the Ca and K. As microgreens can be grown easily in one’s home using the methods used in this study, they may provide a means for consumer access to larger quantities of nutrients per gram plant biomass relative to store-bought mature lettuce, which had relatively lower nutrient contents than microgreens with respect to most nutrients examined.
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