At present, the educational paradigm of professional education shows a tendency to change towards the creation of electronic information-educational environments of universities. This trend is determined by the global conditions of the COVID-19 pandemic, as well as national state interests. The problem of the study lies in substantiating the potential of the electronic information-educational environment of a university in professional education in the context of global changes. The goal of the study is to reveal the potential of university electronic information-educational environments in professional education and identify the trends and perspectives of creating electronic information-educational environments of higher education institutions. Results: A characteristic of the electronic information-educational environment of a university is provided, and its components and resources are identified. The predominant tendencies in the development of e-learning in modern professional education are revealed. The advantages of electronic information-educational environments of universities in professional education are allocated. The prospects for the development of electronic information environments of universities are substantiated.
Introduction. The lack of dietary fibre in the Russian people diet contributes to the development of various diseases. In this regard, it seems worthwhile to enrich foods with dietary fibre obtained from various types of raw materials. In our experiments, we used beet pulp. This study aimed to develop a technology for obtaining combined dietary fibre using the electrophysical method and evaluate its detoxification properties. Study objects and methods. Study objects were pectin substances and combined detoxicants from beet pulp obtained by extracting with succinic acid with and without an extremely low-frequency electromagnetic field (ELF EM) treatment. The profiles of combined detoxicants and pectin substances were identified by IR-Fourier spectrometry. Beet pectin, beet cellulose, and their combined detoxicants were tested for complexing (binding) capacity with respect to lead ions (Pb2+). For this, we applied the trilonometric method with some modifications. Results and discussion. The analysis of the absorption bands of carboxyl groups carbonyls revealed the presence of free carboxyl groups in the combined detoxicants. The combined detoxicant with a 1:0.5 ratio of cellulose and pectin substances showed a high complexing (binding) capacity (601 mg/Pb2+) with respect to lead ions (Pb2+). Conclusion. We developed a technology for producing combined detoxicants with a high complexing capacity with respect to lead ions analysed microstructures of gels obtained during the interaction between the combined detoxicant and lead acetate solution.
This study purpose was to optimize the production technology of encapsulated functional detoxicants based on combined dietary fibers (DF) obtained from beet pulp according to the developed technology. Production technology optimization for functional encapsulated food products was performed using mathematical programming methods based on Statistica v.10 and MathСAD v.15 software environments. An optimal technological production mode for encapsulated food products with high quality indicators, having an increased detoxification ability in relation to heavy metal ions, including combined DF, obtained from beet pulp.
Оптимизированы технологические режимы получения комбинированных детоксикантов растительного происхождения с высокой связывающей способностью по отношению к ионам свинца. Комбинированные детоксиканты из свекловичного жома получали по модифицированной авторами технологии. Многокритериальную оптимизацию технологических режимов получения комбинированных детоксикантов проводили методами математического программирования, реализованными средствами программных сред Statistica 10 и Mathсad 15. Определены оптимальные технологические режимы производства комбинированных детоксикантов из свекловичного жома при гидролизеэкстрагировании пульпы: рН среды 2,5 2,8 температура 60 80С продолжительность гидролизаэкстрагирования при обработке ЭМП КНЧ 40 65 мин массовые доли янтарной и лимонной кислот в растворе гидролизующего агента 70 100 и 0 30 соответственно. Экспериментально установлено оптимальное соотношение клетчатки и пектиновых веществ соответственно 1 : (0,4 0,5), обеспечивающее высокую комплексообразующую способность комбинированного детоксиканта. Установлено, что при данных технологических параметрах связывающая способность по отношению к ионам свинца повышается в среднем более чем на 20. Разработанная технология производства комбинированного детоксиканта с высокой комплексообразующей способностью по отношению к ионам свинца может быть использована для получения продуктов питания функционального назначения. Technological modes of the process of obtaining combined detoxicants of plant origin with a high binding capacity to lead ions are optimized. Combined detoxicants from beet pulp were obtained by the modified technology of the authors. Multicriteria optimization of technological modes of obtaining combined detoxicants was carried out by methods of mathematical programming, implemented by means of software environments Statistica 10 and Mathcad 15. Optimal technological modes of production of combined detoxicants from beet pulp during hydrolysisextraction of pulp are determined: pH 2,5 2,8 temperature 60 80C duration of hydrolysisextraction during extremely low frequency electromagnetic field treatment 40 65 min mass fractions of succinic and citric acids in the solution of hydrolyzing agent 70 100 and 0 30 respectively. Optimal ratio of fiber and pectin respectively 1 : (0,4 0,5), providing a high complexing ability of the combined detoxicant, experimentally established. It is proved that with these technological parameters, the increase in the binding capacity with respect to lead ions is on average more than 20. The developed technology for producing a combined detoxicant with high complexing ability in relation to lead ions can be used to produce functional food products.
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