Effects of α-amylase, endo-xylanase and exoprotease combination on dough properties and bread quality

Received: January 31st, 2021 ; Accepted: May 2nd, 2021 ; Published: May 6th, 2021 ; Correspondence: [email protected] enzymes composition is an actual alternative to chemicals to improve functional properties of flours and to generate changes in the structure of the dough and bread quality. The objective of this study was to analyze the individual and synergistic effects of enzymes preparation (α-amylase, endo-xylanase and exoprotease), newly produced in Russia, on dough properties and bread quality made from wheat flour with different amylolytic activity. Reofermentometric results revealed decreases in gas-forming capacity of dough by 10.0–13.9% when single α-amylase preparates were used. The α-amylase addition had significant effect on gas retention coefficient in flour possessed low amylolytic activity. The effect of endo-xylanase and exoprotease on hydration and amount of wheat gluten was established. The fractional composition of gluten proteins in the dough made with combination of endo-xylanase and exoprotease was established using Lowry method immediately after kneading and after fermentation. It was found that mainly water-soluble, alcohol-soluble and alkaline-soluble proteins were undergone by transformation. The bread with enzymes had a higher specific volume, porosity and aldehyde content and lower shape stability indicator than the control bread made without enzymes. Bread with enzymes was characterized by tenderer and not crumbly crumb with developed thin-walled uniform porosity compared to the control. The crusts were more brightly colored. The combined usage of α-amylase and endo-xylanase and exoprotease retarded bread staling during 5-day storage period. New enzyme composition may be a potentially strong candidate for future applications in the bread-making industry

ZOOLOGICAL MUSEUM OF THE SAMARA STATE UNIVERSITY OF SOCIAL SCIENCES AND EDUCATION IN VOCATIONAL EDUCATION

В статье рассматриваются актуальные вопросы экологической составляющей профессионального образования средствами зоологического музеяThe article deals with actual issues of the environmental component in vocational education by means of the Zoological Museu

Investigation of Chaga Melanin. II. Composition of Hydrocarbon Fraction

© 2015, Springer Science+Business Media New York. The composition of the fraction extracted by petroleum ether from chaga melanin was investigated for the first time. Saturated hydrocarbons with normal and iso-branched structures in addition to pristane, phytane, steranes, and terpanes were identified

Working in (Slow) Progress: Socio-Environmental and Economic Dynamics in the Forestry Sector and the Contribution to Sustainable Development in Europe

Forest ecosystems are increasingly subject to disturbances, such as extreme (climate) events, fires and pathological outbreaks, which exert significant (and still poorly quantified) economic impacts, despite their intrinsic resilience. How forest management addresses these challenges will have profound effects on human health, environmental diversity, (ecological and economic) productivity and the ability of forest ecosystems to recovery from exogenous shocks. Assuming forests as ensuring ecosystem services that are vital to society and human well-being, in addition to providing wood material, a better knowledge of forest ecosystems appears a key requirement to delineate a developmental strategy that guarantees environmental protection objectives and achievement of climate and energy targets. In the context of Sustainable Development Goals of the United Nations 2030 Agenda, the information available on forest management practices in Europe still seems not completely suitable to provide a comprehensive overview of ecosystem conditions, their economic value, and their biodiversity. Based on a literature review, the present contribution focuses on recent dynamics of the forestry sector in Europe, delineating the inherent complexity in the environmental-economic nexus. Additionally, the extensive use of a key natural resource such as wood exerts social implications for local districts adapting to ecological change-from climate warming to landscape transformations. In line with earlier studies, our paper confirms the role of the technical-economic dimension of forestry in sustainable development paths of districts and regions, affecting together (i) short-term economic dynamics, (ii) the growth prospects of the sector, (iii) the organization of the supply chain, (iv) the interconnections between companies, and (v) investment strategies at large. One of the major issues is the low reliability of official statistics to provide a coherent picture of the actual status of forest resources. At the same time, forestry practices are pivotal in maintaining habitats and species while increasing the timber production that remains (too) sustainable. This is the policy direction constantly given by the European Commission to stimulate over time public bodies and private (in whose hands is about 60% of European forests) to start virtuous paths in the circular economy with considerable repercussions in terms of additional jobs, recycled materials, mt of CO2 equivalent avoided, and increase in community added value. In this context, forestry should assure a more 'holistic' contribution to sustainable development paths at various spatial scales. This means concentrating on both economic and environmental targets based on the identification of significant (ecological-economic) dimensions that may delineate future lines of investigation and policy intervention, while increasing between member countries and regional authorities

Взаимовлияние прямых иностранных инвестиций и экономического роста

Бандурка, А. М. Взаимовлияние прямых иностранных инвестиций и экономического роста / Бандурка Александр Маркович, Носова О. В., Носова Т. Ю. // Європейські перспективи. - 2016. - № 1. - С. 5-13.У статті проведено аналіз сучасних тенденцій взаємозв’язку і взаємовпливу прямих іноземних інвестицій і економічного зростання. Розглянуто зовнішні та внутрішні ефекти передачі і імпорту технологій у виробничому секторі від ПІІ. Визначено напрямки інвестиційної діяльності глобальних ТНК, включаючи контрактні операції. Проаналізовано чинники стимулювання економічного зростання.The article analyzes the relationship of current trends and mutual foreign direct investment and economic growth (FDI). The internal and external effects of the transfer and import of technology in the manufacturing sector of FDI are considered. The directions of investment activity of global multinationals including contractual operations are conducted. The factors stimulating economic growth are defied.В статье проведен анализ современных тенденций взаимосвязи и взаимовлияния прямых иностранных инвестиций и экономического роста. Рассмотрены внешние и внутренние эффекты передачи и импорта технологий в производственном секторе от ПИИ1. Рассмотрены направления инвестиционной деятельности глобальных ТНК, включая контрактные операции. Проанализированы факторы стимулирования экономического роста

3-ARYL-[1,2,4]TRIAZOLO[4,3-c]QUINAZOLINE DERIVATIVES: SYNTHESIS AND MODIFICATIONS

This work was supported by the Ministry of Science and Higher Education of Russian Federation, State Contract no FEUZ-2020-0058 (Н687.42Б.223/20)

SYNTHESIS OF (2-ARYLQUINAZOLIN-4-YL)HYDRAZONES OF 2-HYDROXYBENZALDEHYDES AS POTENTIAL PHOSPHOINOSITIDE 3-KINASE (IP3Kδ) AND CASEIN KINASE 2 (CK2) INHIBITORS

This work was supported by the Ministry of Science and Higher Education of Russian Federation, State Contract no FEUZ-2020-0058 (Н687.42Б.223/20)

INNOVATIONS IN PROFESSIONAL EDUCATION BACHELOR'S EDUCATION (SECURITY PROFILE VITAL ACTIVITY)

В статье рассматриваются тенденции инновационного подхода, влияющие на развитие профессионально-педагогического образования бакалавров в области безопасности жизнедеятельности на примере учебной дисциплины «Зоология и зоологическое краеведение»The article considers the trend of innovative approach, which influence the development of vocational and pedagogical education of bachelor in the field of life safety on the example of the educational discipline Zoology and zoological local histor