scholarly journals Dried fruits marketed in Russian: toxigenic mold contamination

2021 ◽  
Vol 100 (7) ◽  
pp. 717-723
Author(s):  
Lyudmila P. Minaeva ◽  
Anna S. Polyanina ◽  
Mariya G. Kiseleva ◽  
Zakhar A. Chalyy ◽  
Natalia R. Efimochkina ◽  
...  

Introduction. Dried fruits are a valuable source of dietary fibre, many vitamins and minerals in the population’s diet. However, the high content of readily available carbohydrates makes this type of product vulnerable to mould contamination. The greatest danger among which are toxigenic species. But there is practically no scientific information about the contamination presented on the Russian market dried fruits with moulds producing mycotoxins. That does not allow judging about this aspect of food safety. Materials and methods. Contamination with moulds and bacteria of 57 samples of dried fruits of 7 species popular in Russia was studied using cultural methods of analysis. Monospore isolates of moulds were isolated from dried fruits; in vitro mycotoxins production studied; by UHPLC-MS / MS analyzed mycotoxins in the multidetection mode. Results and discussion. In general, the microbial contamination of dried fruits was low: 87.7% of the samples met the established microbiological standards, in most cases, moulds caused it. At the same time, the highest frequency and levels of contamination were found in dates. Aspergillus sp. dominated in the micoflora of all types of dried fruits. Among the isolated 33 strains of moulds, 45.5% turned out to be toxigenic and, in vitro, were capable of biosynthesis of significant amounts of several types of mycotoxins, including emergent mycotoxins. Fumonisin- and ochratoxin-producing activities have been found in Aspergillus strains of the Nigri section. In model experiments, the accumulation of mycotoxins in individual strains exceeded the level normalized in grain products, including (in μg/kg): for aflatoxins B1 - more than 32000 and B2 - 3230; fumonisin B2 - more than 3100; ochratoxin A up to 4.3; for emergent accumulation reached: sterigmatocystin up to 6218220 and citreoviridine - 153. Conclusion. Moulds are the main type of microflora that contaminates dried fruits. The ability of mould isolates from dried fruits to form mycotoxins has been established, among which highly toxigenic strains have been identified. This indicates the presence of a potential risk of contamination of this type of food with unregulated mycotoxins and a possible increase in their content in the diets of consumers. The results obtained substantiate the need for extensive monitoring of mycotoxin producers in dried fruits. This is important for predicting the risk of toxin formation and identifying the relationship of specific mycotoxins with certain types of dried fruits. The presence of toxigenic activity of moulds isolated from dried fruits has been shown in Russia for the first time.

2019 ◽  
pp. 42-44
Author(s):  
I.V. GUSAROV ◽  
V.A. OSTAPENKO ◽  
T.V. NOVIKOVА

Впервые в мире создана популяция зубров на территории 60 градусов северной широты. В новых климатических условиях разведения и сохранения зубров определены и проанализированы факторы существования вида на севере Европейской части РФ. Выявлены признаки, динамика численности, которые являются составной частью системы, предназначенной для управления биоразнообразием. Интродукция, являясь процессом введения в экосистему нехарактерных для нее видов, может усиливать изменения биоценозов как положительно, так и отрицательно. Насколько быстро и успешно проходит процесс адаптации заселенного вида, и усматривается его влияние на окружающую среду зависит дальнейшее существование зубров и в целом биоразнообразия. В статье обсуждаются вопросы взаимоотношения зубров с другими видами копытных и хозяйственной деятельностью человека, а также дальнейшим использованием зубров в сельскохозяйственном производстве. Пластичность зубров, выявление изменений и их анализ при вселении видов в новые условия обитания необходимы не только для определения развития или деградации биоценозов и в целом экосистемы, но и прогноза социально-экономических последствий интродукции как одного из методов сохранения редких и исчезающих видов фауны.For the first time in the world, a bison population has been created in an area of 60 degrees north latitude. In the new climatic conditions of breeding and preservation of bison, the factors of the species existence in the north of the European part of the Russian Federation are identified and analyzed. The signs, dynamics of abundance, which are an integral part of the system designed to manage biodiversity are identified, since the preservation of biological diversity on the planet is one of the main problems of our time. Introduction, being the process of introducing non-typical species into an ecosystem, can enhance changes in biocenoses, both positively and negatively. The question posing sounds especially when it comes to such a large hoofed animal as the European bison. How quickly and successfully the process of adaptation of the universe takes place and its environmental impact is seen depends on the continued existence of bison and biodiversity in general. The article discusses the relationship of bison with other types of ungulates and human activities, as well as the further use of bison in agricultural production. How these issues will be resolved positively depends on the future of these animals. Thus, the plasticity of bison, the identification of changes and their analysis, with the introduction of species into new habitat conditions is necessary not only to determine the development or degradation of biocenoses and the ecosystem as a whole, but also to predict the socio-economic consequences due to the introduction as one of the methods of preserving rare and endangered species of fauna.


2017 ◽  
Vol 80 (4) ◽  
pp. 544-571
Author(s):  
David Pullins

Abstract This article addresses in depth for the first time the irregularly shaped canvases known as tableaux chantournés (cut-out paintings) that were produced in vast numbers by leading academicians between the 1730s and 1750s and occupy a tenuous place between fine and applied or decorative arts. Through an examination of the term’s first uses in regard to painting and eighteenth-century critics’ responses to these works, tableaux chantournés are positioned as a means of rethinking the extraction of painting from a richer visual field and the relationship of this medium-specific agenda to the historiography of the rococo.


1980 ◽  
Vol 9 (4) ◽  
pp. 179-183 ◽  
Author(s):  
H L Stark ◽  
A Al-Haboubi

The relationships of width, thickness, volume and load to extension for human skin in vitro are reported. The specimens tested exhibited a low stiffness phase followed by a high stiffness phase. Volume rose than fell back to the initial volume at approximately the end of the low stiffness phase, and continued on falling to a final reduction of about 20 per cent at failure. Width decreased throughout, showing a maximum rate of reduction at approximately the end of the low stiffness phase. Thickness increased at a rate which also was maximum at the end of the low stiffness phase. The specimens used were long compared with their width and thickness thus offering no constraint to lateral contraction. An interpretation of this data in respect of the behaviour of the collagen fibre matrix is postulated.


PMLA ◽  
1916 ◽  
Vol 31 (1) ◽  
pp. 114-160
Author(s):  
Josephine D. Sutton

The relationship of the manuscripts of the Middle-English poem Ipotis has been studied in detail by Dr. Hugo Gruber on the basis of the nine mss. known to him. In addition to these there are five others, four of which are printed for the first time below. One of these, unfortunately a fragment, is of the greatest importance, since it carries back the date of the poem at least fifty years. On the basis of the earliest manuscript known to him—ms. Vernon, written about 1385—Gruber assigned the Ipotis to the second half of the fourteenth century. But in the light of the new evidence, the composition of the poem is pushed back to the very beginning of the century.


1977 ◽  
Vol 43 (5) ◽  
pp. 839-843 ◽  
Author(s):  
J. A. Severson ◽  
R. D. Fell ◽  
J. G. Tuig ◽  
D. R. Griffith

Plasma corticosterone concentrations and in vitro adrenal secretion of corticosterone were determined in exercise-trained rats. Rats, 100, 200, and 300 days of age, were trained for a 10-wk period by treadmill running. Following the training program, rats were subjected to an acute bout of swimming. Acute swimming elevated plasma corticosterone concentrations in all age groups. At 170 days of age, the plasma corticosterone concentration following swimming was higher in exercise-trained rats than in controls. The opposite was true of acutely swum rats at 270 and 370 days of age. Acute swimming elevated the in vitro adrenal gland response to adrenocorticotropic hormone stimulation in control rats at all ages and in trained rats at 170 days of age. The in vivo relationship of epinephrine and the pituitary adrenal system is suggested as a mechanism which could have caused this response. The relationship of secretion rates to plasma corticosterone concentrations indicated that extra-adrenal mechanisms, such as decreased turnover, were also responsible for the elevated plasma corticosterone levels observed in response to acute swimming.


1964 ◽  
Vol 6 (2) ◽  
pp. 169-178 ◽  
Author(s):  
R. V. Large

1. Thirty Suffolk × Half bred lambs were slaughtered at the following ages: two twin lambs at birth and two singles and two twins at 1, 2, 3, 4, 6, 8 and 16 weeks of age.2. The following weights were recorded: live-weight immediately before slaughter; and carcass, head, skin, feet, alimentary tract, heart, liver, kidneys, lungs and trachea, and blood immediately afterwards.3. The alimentary tract was emptied and weighed in four separate parts; reticulo-rumen, omasum-abomasum, small intestine, large intestine.4. The volumes of the reticulo-rumen and the omasum-abomasum were measured by immersing in water and filling the organs with water to 2 cm. pressure.5. The in vitro digestive efficiency of rumen liquor from lambs of 1, 2, 3 and 4 weeks of age was assessed.6. Empty body weight was considered to be valuable in comparing animals of different ages or from different feeding regimes or at different times of the year because variations in gut ‘fill’ were eliminated.7. There were no differences between singles and twins in the relationship of the fresh weights of the parts of the body to empty body weight, except that development of the liver and the blood was rather slower for singles.8. Little evidence was found of a difference in rate of development of the alimentary tract between singles an d twins, although the log an d square root transformation suggested a possible difference in reticulo-rumen size in favour of twins, significant at the 5% level.


2017 ◽  
Vol 61 (2) ◽  
pp. 379-402
Author(s):  
ANDREW MCKENZIE-MCHARG

AbstractIn 1789 in Leipzig, a slim pamphlet of 128 pages appeared that sent shock waves through the German republic of letters. The pamphlet, bearing the title Mehr Noten als Text (More notes than text), was an ‘exposure’ whose most sensational element was a list naming numerous members of the North German intelligentsia as initiates of a secret society. This secret society, known as the German Union, aimed to push back against anti-Enlightenment tendencies most obviously manifest in the policies promulgated under the new Prussian king Frederick William II. The German Union was the brainchild of the notorious theologian Carl Friedrich Bahrdt (1741–92). But who was responsible for the ‘exposure’? Using material culled from several archives, this article pieces together for the first time the back story to Mehr Noten als Text and in doing so uncovers a surprisingly heterogeneous network of Freemasons, publishers, and state officials. The findings prompt us to reconsider general questions about the relationship of state and society in the late Enlightenment, the interplay of the public and the arcane spheres and the status of religious heterodoxy at this time.


Atmosphere ◽  
2021 ◽  
Vol 12 (11) ◽  
pp. 1471
Author(s):  
Maria V. Korneykova ◽  
Anastasia S. Soshina ◽  
Andrey I. Novikov ◽  
Kristina V. Ivashchenko ◽  
Olesya I. Sazonova ◽  
...  

For the first time, a mycological analysis of outdoor urban environment (air, leaves, sealed surfaces) was carried in the cities of subarctic (Murmansk) and temperate (Moscow) climatic zones. The chemical composition of dust deposited on leaves of dominant tree species was taken as an indicator of the air quality. Assessment of the complex impact of factors (climate zone, type of substrate, anthropogenic load) on the quantitative and qualitative parameters of mycobiome was performed. Compared to Moscow, Murmansk was characterized by an increased number and concentrations of pollutants in the deposited dust. The number of culturable airborne fungi in Murmansk was substantially lower than in Moscow. Half of the species belonged to the opportunistic in both cities. Most dangerous opportunistic fungi were absent in the air of recreational zones but present on leaves surface and in road dust in all assessed zones of the cities. Dust chemical composition affected the diversity of fungi species. While the relationship of biological parameters with concentration of potentially toxic metals was generally negative, Cd increased the fraction of opportunistic fungi in road dust. The study revealed an importance of substrate in determining the sensitivity of outdoor mycobiome to pollution and highlighted its biological characteristics sensitive to climate.


2021 ◽  
Vol 11 (1) ◽  
pp. 139-147
Author(s):  
S. V. Sheyanova ◽  
◽  
N. M. Yusupova ◽  

Introduction: at present the reader’s audience is particularly interested in creative experiments in which the historical fate of the Russian peasantry in the «turning» eras is artistically comprehended. The article is devoted to the study of the problem-thematic range of modern Mordovian historical prose. The subject of analysis is the peculiarity of the reception of the period of collectivization and dekulakization in the story by Erzyan prose writer A. Doronin «A Wolf Ravine». Objective: to reveal the features of the artistic reconstruction of the events of the 1930s, the modeling of the relationship between a man and society in the story by A. Doronin «A Wolf Ravine».Research materials: the story by A. Doronin «A Wolf Ravine». Results and novelty of the research: the historical story « A Wolf Ravine » for the first time becomes the object of scientific understanding and is introduced into the context of Finno-Ugric literary criticism. A. Doronin artistically interprets the real events and circumstances of the resettlement of dispossessed peasants of the Volga region to the uninhabited steppes of Kazakhstan. As a result of the study, we conclude that the actualization of this problem-thematic cluster is due to the creative concept of the historical writer; the individual author’s approach to the reconstruction of historical narrative can be traced in the writer’s desire to realistically reveal the relationship of personality and society in the tragic 1930s; to analyze intentions of people and of the psychological states of the characters. Problems of a sociopolitical nature, actualized in the story, are filled with philosophical, axiological content, and lead to a multi-faceted understanding of the «man and history» problem.


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