scholarly journals Determination of 1-Deoxynojirimycin (1-DNJ) in Leaves of Italian or Italy-Adapted Cultivars of Mulberry (Morus sp.pl.) by HPLC-MS

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1553
Author(s):  
Lucia Marchetti ◽  
Alessio Saviane ◽  
Antonella dalla Montà ◽  
Graziella Paglia ◽  
Federica Pellati ◽  
...  
Keyword(s):  
Scientific Literature ◽  
Climatic Conditions ◽  
Postprandial Blood Glucose ◽  
Analytical Determination ◽  
Thermal Treatments ◽  
Drying Process ◽  
Agronomic Practices ◽  
Far Eastern

Recently, 1-DNJ has been widely studied by scientists for its capacity to inhibit α-glucosidase and reduce postprandial blood glucose and fat accumulation. To the best of our knowledge, this is the first analytical determination of 1-DNJ in Morus sp.pl. leaves carried out on Italian crops, and it could be used as a reference to assess the quality of the plant material in comparison to Far Eastern Asia cultivations. The effects of two thermal treatments were compared to test the incidence of the drying process on the 1-DNJ extractability. In addition, two harvesting seasons in the same year (2017) and two subsequent harvesting years (2017–2018) were considered. The amount of 1-DNJ herein found was comparable to that reported in the scientific literature for Asian cultivations. The increase in 1-DNJ along the summer and the higher level of this compound in the apical leaves also complies with previous findings. However, a strong implication for the climatic conditions in the different years and a significant interaction between climate and genotypes suggest exploring very carefully the agronomic practices and selecting cultivars according to different environmental conditions with a view to standardize the 1-DNJ amount in leaves.

scholarly journals Nutritional quality of preparations based on Döner Kebab sold in two towns of Veneto Region, Italy: preliminary results

2015 ◽  
Vol 4 (2) ◽  
Author(s):  
Monica Panozzo ◽  
Luciano Magro ◽  
Ilario Erle ◽  
Stefano Ferrarini ◽  
Riccardo Murari ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Saturated Fatty Acids ◽  
Daily Intake ◽  
Analytical Determination ◽  
Nutritional Values ◽  
Carbohydrate Concentration ◽  
Significant Difference ◽  
Serving Sizes

The sampling activity for this study was performed between September and October 2012. It involved seven shops in Verona, eleven in Vicenza and two in its province (Bassano del Grappa), northern Italy. The scope was to measure the values of energy and nutritional components and to identify the profile of fatty acids in a serving of ready to eat Döner Kebab. The samples were collected according to the usual proportions of this preparation, keeping all the components (bread, meat, vegetables and sauces) separated in different bags. In the laboratory, each component was weighed and, after pooling, processed for the analytical determination of humidity, crude protein, lipid content and fatty acid profile, ashes, sodium (salt), carbohydrate, collagen (measured only in meat) and fibre. The results showed a highly standardized recipe, while the comparison between the two towns showed a significant difference in carbohydrate concentration (mainly due to the quantity of bread used). By observing data on the serving sizes sampled (274 to 618 g) and the nutritional values obtained, Döner Kebab can be seen as a ready to eat dish providing much energy: on average a serving size covers 45 and 36% of the recommended daily intake of energy, 95.7 and 82.1% of protein, 42.5 and 33.4% of saturated fatty acids for females and males, respectively, and 85.5% of salt regardless of gender. Döner Kebab can be considered as an occasional substitute to one of the two main meals of the day.

scholarly journals Influence of degree of wheat infestation with Fusarium on its technological quality and safety

2011 ◽  
pp. 61-72
Author(s):  
Elizabet Janic-Hajnal ◽  
Aleksandra Torbica ◽  
Jasna Mastilovic
Keyword(s):  
Climatic Conditions ◽  
Wheat Crop ◽  
Quality And Safety ◽  
Safety Control ◽  
Test Elisa ◽  
Upper Limits ◽  
Metabolic Products ◽  
Technological Quality

Climatic conditions prior to wheat harvest 2010 were favorable for the development of field molds. The most important wheat contamination that should be determined is the presence and frequency of grain lots infected with Fusarium. This paper presents the results of content of fusarious kernels found in samples collected from all wheat growing regions of Serbia. Investigations were performed according to the regulations which foresee sensory determination of content of infected kernels. Determined average content of fusarious kernels was 6.01%, varying in range from 0% to 29.65 %. The obtained results, which exceeded the upper limits of permitted contents defined by national and EU regulations, pointed to the need for investigation of presence of Fusarium metabolic products, i.e. mycotoxins (zearalenone (ZEA) and deoxinivalenol (DON)) in wheat. Mycotoxin content was determined in average wheat samples and in wheat samples with increased content of fusarious kernels. Direct enzymatic immunoaffinity test (ELISA) was applied for determination of mycotoxin content. Although high content of fusarious kernels characterizes wheat crop in 2010, the determined quantities of two investigated mycotoxins did not exceed maximal permitted content. Consequences of unfavorable quantity and structure of total impurities in wheat crop in 2010 reflect decreased commercial and technological quality of wheat and point out to the need of necessary wheat safety control.

scholarly journals Quality Assessment of Air-dried Teakwood Boards Using Moisture Content Gradients

2016 ◽  
Vol 24 (0) ◽  
Author(s):  
Djeison Cesar Batista ◽  
José Tarcísio da Silva Oliveira ◽  
Rená Porto Pizetta ◽  
Vinicius Munaldi Lube
Keyword(s):  
Moisture Content ◽  
Average Moisture Content ◽  
Drying Process ◽  
Air Drying ◽  
Kiln Drying ◽  
Moisture Meter ◽  
Environment Control ◽  
Moisture Content Gradient

ABSTRACT The determination of moisture content gradients is one of the most important steps for assessing the quality of wood drying. The general aim of this work was to study the quality of air-dried teakwood boards according to the gradients of moisture content in thickness and length. Six representative boards (40 × 180 × 2,300 mm) were sampled from a stack air-dried under shelter, divided into 30 equal parts in length and measured with a resistance moisture meter, resulting in four treatments: two depths (1/4 and 1/2 thickness) and two surfaces (inner and outer) of measurement. As main results, we can conclude that the air-drying quality can be considered good, mainly for two reasons: i) the average moisture content gradients in thickness were comparable to those reported in literature for kiln-drying of less thick boards; ii) the range of average moisture content among boards (2.5 p.p.) was satisfactory for a drying process carried out without environment control. Length moisture content gradient was completely different from that reported in literature, in which no board tops had smaller moisture content than the parts comprehended in between the tops.

scholarly journals Algorithm of rations calculation of animals feeding and areas of green crops sowing

2019 ◽  
Vol 21 (92) ◽  
pp. 55-59
Author(s):  
B. Kozij ◽  
O. Stepanjuk
Keyword(s):  
Weather Conditions ◽  
Climatic Conditions ◽  
Tabular Data ◽  
Average Data ◽  
The Real ◽  
Genetic Potential ◽  
Standard Information ◽  
Properties Of Soil

The most important factor of realization of genetic potential of animals is  a  valuable feeding.  Considerable attention is today spared to this problem and are conducted many researches of the rationssent to perfection of structure taking into account the physiological features of animals digestion. The process of rations calculation of animals feeding includes the need in public work with plenty of certificate information: by tabular data about content of nutritives, macro- and microelements, vitamins in each type of feed, by the results of lab tests of forage, requirements in the nutritives of animals of different sexual-age-old groups. Work is considerably simplified, if all this information is kept in memory  of computer as a corresponding base. A  standard database contains certificate information about the content of nutritives, macro- and microelements, vitamins, and other in every type of feed in accordance with average data for a corresponding region or zone of agriculture. Such information is conditionally-permanent, as properties of soil and natural and climatic conditions for a concrete region change very slowly. At the rations calculation of agricultural animals feeding and poultry bird it is necessary to have operative information about the real content in corresponding forage all those substances after that there will be a balanced ration. Depending on weather conditions the quality of the used seed, amount and added fertilizer conditions and expiration of forage date the real content of nutritives in every  feed candiffer from a standard for this region. So before of calculations, it is necessary to amend changes in the table of  database that will be directly used in calculations. With the aim of maintenance of standard information such calculations should be performed with the use of some copy of standard database in which should make such changes. An algorithm is offered for realization of calculation of rations of feeding of agricultural animals together with determination of areas of sowing of corresponding greencrops on the basis of the worked out mathematical model but methodology of realization of this algorithm by facilities of tabular processor of Excel.

scholarly journals Implementation of the model of formation of entrepreneurial competences in modern pedagogical education: theoretical and practical aspects

2020 ◽  
pp. 27-37
Author(s):  
Ivan Ivanovich Dyakov ◽  
Goar Robertovna Asatryan ◽  
Roman Sergeevich Kosienko
Keyword(s):  
Theoretical Analysis ◽  
Scientific Literature ◽  
Social Institution ◽  
Educational Process ◽  
Educational Institutions ◽  
Practical Implementation ◽  
Entrepreneurial Culture ◽  
The Subject ◽  
Far Eastern

The subject of this research is the formation of entrepreneurial competences of students majoring pedagogy. The goal of this work consists in formulation of theoretical provisions and analysis of organizational-pedagogical conditions for implementation of the model of formation of entrepreneurial competences in educational process of the Ussuriysk branch (School of Pedagogy) of Far Eastern Federal University. The development of entrepreneurial culture of the society currently becomes one of the priority objectives of education as a social institution. In the authors’ opinion, its solution first and foremost lied in the formation of entrepreneurial competences of future pedagogues as the major plank of education system. The research methodology is based on systemic approach and includes the methods of theoretical analysis of the state of problem in scientific literature, studying and generalization of approaches towards building a model for the formation of entrepreneurial competences, and analysis of documentation of educational institutions. The scientific novelty consists in emphasizing the need for the formation of entrepreneurial competences of students majoring pedagogy; proposal of the structural-conceptual model of the educational process and determination of its key organizational-pedagogical conditions; as well as assessment of practical implementation of such model.

scholarly journals Effect of Agronomic Techniques on Aroma Composition of White Grapevines: A Review

Agronomy ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2027
Author(s):  
Eleonora Cataldo ◽  
Linda Salvi ◽  
Francesca Paoli ◽  
Maddalena Fucile ◽  
Giovan Battista Mattii
Keyword(s):  
Review Paper ◽  
Scientific Literature ◽  
Aroma Compounds ◽  
Complex Concept ◽  
Training Systems ◽  
Agronomic Practices ◽  
Grape Quality ◽  
Grape Varieties ◽  
Positive Effect

Climate change with rising temperatures and the unpredictability of rainy events during ripening leads to tough challenges for the winemakers in preserving the quality of white grape varieties. Grape quality is a complex concept that mainly refers to berry chemical composition, including secondary metabolites such as aroma compounds that in white berries play a key role in the identity of the wine. Terpenes, thiols, C13-norisoprenoids, methoxypyrazines, and nonterpenic alcohols are the most important aroma compounds in white grapes and several of them can be found as free volatiles or bound as glycoconjugate molecules. Agronomic practices in vineyards, such as biostimulant application, irrigation, defoliation, training systems, foliar fertilization, and bunch thinning, can have a positive effect on their concentration. This review aims to highlight the aromatic characteristics of the most utilized white grape cultivars and focus on agronomic techniques in the vineyard to enhance, implement, and intensify their aromatic characteristics. The purpose of this review paper is therefore to investigate the state of the art regarding the exaltation of aroma in white grapes in the scientific literature through sustainable agronomic techniques, but further future investigations are considered necessary given the uncertainty concerning some mechanisms of biosynthesis and their correlation with such agronomic practices.

scholarly journals European subtype of tick-borne encephalitis virus. Literature review

2021 ◽  
Vol 6 (4) ◽  
pp. 100-113
Author(s):  
Yu. S. Savinova
Keyword(s):  
Genome Stability ◽  
Scientific Literature ◽  
Biological Properties ◽  
Climatic Conditions ◽  
Encephalitis Virus ◽  
Tick Borne Encephalitis ◽  
Tick Borne Encephalitis Virus ◽  
Subtype A ◽  
Far Eastern ◽  
European Subtype

This review is devoted to the European subtype of tick-borne encephalitis virus (TBEV). It summarizes and analyzes the information available at the scientific literature on the genetic and biological properties of strains of this virus subtype. A comparative analysis of the complete coding sequences of all currently recognized tick-borne flaviviruses was carried out. It was noted that the differences in TBEV strains included in the European subtype are minimal, which indicates a higher degree of their genetic homogeneity than in strains of the Far Eastern and Siberian subtypes. The level of differences in the genome of strains of the European subtype, depending on the region and the source of isolation, was analyzed. No relationship was found between the level of homology of nucleotide sequences of TBEV strains of the European subtype and the source of isolation. The proposed models for the evolution of TBE are described. The area of TBE of the European subtype in Eurasia is analyzed. The maps of the geographical distribution of the European subtype are presented. It shows the European subtype TBE is found in 14 regions of Russia. TBE of this subtype, as a rule, causes a disease with a milder course in comparison with TBE caused by a virus of the Far Eastern or Siberian subtypes. An analysis of the main vectors and reservoir hosts of the European subtype TBEV in Europe and in Siberia has been carried out. It is emphasized that in Eurasia the European TBEV circulates in territories that differ significantly in climatic conditions, relief, landscape, and characteristics of biotopes. However, analysis of scientific literature data showed that, despite these differences, it has a high degree of genome stability.

ANALYTICAL DETERMINATION OF THE MICRORELIEF PARAMETERS FORMED AS A RESULT OF CENTERLESS GRINDING OF THE FULL SPHERE

2021 ◽  
pp. 111-117
Author(s):  
О.П. Решетникова ◽  
Б.М. Изнаиров ◽  
А.Н. Васин ◽  
Н.В. Белоусова ◽  
Г.А. Семочкин
Keyword(s):  
Spherical Surface ◽  
Analytical Determination ◽  
Mean Deviation ◽  
Centerless Grinding ◽  
Abrasive Tools ◽  
The Cost ◽  
Production Preparation ◽  
Reliable Analytical Method

При технологической подготовке операций чистовой и отделочной обработки деталей абразивными инструментами очень важными задачами являются прогнозирование ее результатов в зависимости от назначенных режимов и назначение режимов в зависимости от требуемого качества обработанных поверхностей. Имеющиеся многочисленные справочные материалы такого характера получены в лабораторных условиях, носят дискретный характер, не учитывают специфическую топографию поверхностей абразивных инструментов и множества других условий и поэтому недостаточно достоверны. На их основе возможно планировать технологический процесс только предварительно, а затем неизбежно требуется уточнять его параметры экспериментальным путем, что приводит к значительному удорожанию процесса подготовки производства. Наличие достоверной аналитической методики позволяет кратно снизить эти затраты, и поэтому она настоятельно необходима не только и даже не столько при выполнении научных исследований, сколько в реальном производстве. В статье аналитически определены параметры микрорельефа, образующегося в результате бесцентрового шлифования полной сферы. Уточнено влияние процесса выхаживания на формирование шероховатости сферы. Приведена методика расчета среднеарифметического отклонения микропрофиля сферической поверхности In the technological preparation of the operations of finishing processing of parts with abrasive tools, it is very important to predict its results depending on the assigned modes and the purpose of modes depending on the required quality of the processed surfaces. The available numerous reference materials of this nature were obtained in laboratory conditions, are discrete in nature, do not take into account the specific topography of the surfaces of abrasive tools and many other conditions, and therefore are not reliable enough. On their basis, it is possible to plan the technological process only in advance, and then inevitably it is necessary to refine its parameters experimentally, which leads to a significant increase in the cost of the production preparation process. The availability of a reliable analytical method allows you to multiply these costs, and therefore it is urgently needed not only and even not so much when performing scientific research, but in real production. In the article, we analytically determine the parameters of the microrelief formed as a result of centerless grinding of a full sphere. We determined the influence of the nursing process on the formation of the sphere roughness. We present a method for calculating the arithmetic mean deviation of the micro-profile of a spherical surface

scholarly journals Analytical determination of the rational amount of low-alumina coal of grade DG in the charge for coke production the specified properties

2019 ◽  
Vol 1 (1) ◽  
pp. 93-96
Author(s):  
Starovoit A ◽  
Sorokin Ye ◽  
Shumeiko T
Keyword(s):  
Linear Models ◽  
Coke Production ◽  
Response Surfaces ◽  
Analytical Determination ◽  
Optimum Quantity ◽  
Coal Charge ◽  
Main Factors ◽  
Required Quality

In this paper we consider mathematical calculations for the study of optimal content of fractions of weakly-coagulated coal of a certain density, which is part of the coal charge for coking. The methods of mathematical calculations, which were carried out with the help of the method of PFE 22 and TSKOP, are presented. As a result of the analysis, the authors found that the main factors that affect the quality of the final product are the granulometric composition and the degree of its metamorphism. On the basis of the calculations, the authors found that the obtained linear models of PFE 22 are inadequate and are not acceptable for their further use. In this way, the article is devoted to a detailed study of mathematical calculations, namely, the regression equation and response surfaces obtained with the help of the TsKOP method, which showed in which optimum quantity it is possible to use a fraction of poorly sparing coal to produce the required quality coke.

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