scholarly journals Heavy Metals and Microelements in the System "Soil – Plant – Product of Plant Processing"

2021 ◽  
pp. 13-18
Author(s):  
М.А. Сенченко ◽  
М.В. Степанова

В России при производстве национальных напитков и продуктов питания используют сырьё растительного происхождения. Многие участки для возделываемых культур расположены вблизи урбанизированных районов, нефтеперерабатывающих и машиностроительных заводов. Исследования посвящены определению тяжёлых металлов в почвах урбанизированных и сельских районов Ярославской области и проведены в 2019–2020 гг. Целью данного исследования является определение содержания некоторых микроэлементов и тяжёлых металлов в почве, ревене и продукте его переработки – квасе, произведённом разными способами (рассматривались 2 технологии: технология с дополнительной операцией «вымачивание стеблей ревеня» и «настаивание стеблей ревеня и дополнительных ингредиентов» и технология с дополнительной операцией «варка стеблей ревеня и дополнительных ингредиентов»). При исследовании загрязнения почвы микроэлементами и тяжёлыми металлами на всех территориях превышения предельно допустимых концентраций не выявлено. Установлено, что по величине среднего содержания в водной вытяжке почвы исследуемые элементы на всех рассмотренных территориях региона образуют следующий убывающий ряд: железо > свинец > цинк > медь > мышьяк > кадмий. Более высокие концентрации цинка, железа, кадмия, свинца и мышьяка выявлены в урбанизированной территории, а меди – в сельской территории. Анализ миграционной способности элементов в системе «почва – растение – продукция растительного происхождения» показал наличие плохой миграционной способности для цинка и железа. Использование растительного сырья, произведённого по технологии органического производства и по разработанной технологии переработки растительного сырья, способствовало наименьшему воздействию на его составные части, увеличению содержания макро- и микроэлементов. При этом содержание токсичных элементов остаётся в пределах действующих нормативных документов. Технология, включающая дополнительную операцию «варка», обеспечила наибольшую экстракцию макро- и микроэлементов из ревеня в квас. In Russia, raw materials of plant origin are used in the production of national beverages and food products. Many areas for cultivated crops are located near urbanized areas, oil refineries and mechanical engineering plants. Researches are devoted to the definition of heavy metals in soils of urbanized and rural areas of the Yaroslavl region and were carried out in 2019–2020. The purpose of this study is to determine the content of some microelements and heavy metals in soil, rhubarb and its processing product – kvass produced in various ways (2 technologies were considered: technology with an additional operation "soaking rhubarb stems" and "infusing rhubarb stems and additional ingredients" and technology with an additional operation "boiling rhubarb stems and additional ingredients"). When investigating soil contamination with microelements and heavy metals in all territories, no excess of maximum permissible concentrations was found. It was established that in terms of the average content in the water extract of the soil, the examined elements in all the considered territories of the region form the following decreasing series: iron > lead > zinc > copper > arsenic > cadmium. Higher concentrations of zinc, iron, cadmium, lead and arsenic were found in urbanized territory, and copper in rural territory. An analysis of the migration ability of elements in the system "soil – plant – product of plant processing" showed the presence of poor migration ability for zinc and iron. The use of plant raw materials produced according to the organic production technology and the developed technology for processing plant raw materials contributed to the least impact on its components, an increase in the content of macro- and microelements. At the same time, the content of toxic elements remains within the limits of existing regulatory documents. The technology, including an additional "boiling" operation, ensured the greatest extraction of macro- and microelements from rhubarb to kvass.

Author(s):  
О. N. Nemereshina ◽  
◽  
G. V Petrova ◽  
А. V. Filippova ◽  
◽  
...  

The collection of heavy metals in soils is a threat to public health and agriculture. Wild and cultivated plants are able to accumulate significant amounts of heavy metals, which on the one hand allows the use of phytopreparations to correct microelement exchange and eliminate hypomicroelementosis. The work shows the results of study of the content of cobalt and cadmium in wastewater, soil and the aboveground part of medicinal and forage plants in the fields of wastewater irrigation located in the sanitary protection zone of Orenburg gas processing plant. 9 types of plants used in medical and veterinary practice in Russia were selected for the study. Water, soil, and plant samples were collected at the end of June from 2018 to 2020. The TM content was determined on the basis of the interdepartmental complex analytical laboratory of FSBEI HE «Orenburg state agrarian university» by atomic absorption spectroscopy using the «Spektr-5» atomic absorption spectrometer (Russia). The ability of species to accumulate cadmium and cobalt in the aboveground part (assimilating and generative organs) was determined. According to the results of the research, the ability of the studied plants to control to a certain extent the intake of cobalt and cadmium from the environment to generative and assimilating organs is seen. Specific differences in the nature of accumulation of cobalt and cadmium in the aboveground part of the studied plants were determined. The results of the study may be of interest for planning enterprises for phytoremediation of technogenically polluted soils and evaluating the quality of medicinal and feed plant raw materials.


2021 ◽  
pp. 176-184
Author(s):  
Irina V. Sobol ◽  
Anastasia V. Kazakevich ◽  
Lyudmila V. Donchenko ◽  
Vladimir G. Griguleckij

2020 ◽  
Vol 24 (7) ◽  
pp. 37-41
Author(s):  
G.G. Buskunova ◽  
R.F. Khasanova ◽  
I.N. Semenova ◽  
G.R. Ilbulova

The features of the accumulation of heavy metals in medicinal plant raw materials Tanacetum vulgare L. in the conditions of the Trans-Urals region of the Republic of Bashkortostan are discussed. The variation-statistical indices of the content of heavy metals in soils and in plants are calculated. Soils and plants have high coefficients of heavy metals variation, with the exception of manganese in the soil, which is characterized by moderate variability. An increased level of heavy metals mobile forms, such as Cu, Zn, Mn, Fe, Pb, Cd, has been detected in all soil samples. All selected samples had an elevated level of mobile forms. According to the degree of contamination, the studied soils were classified as permissible. In tansy plants, the concentration of trace elements-biophiles exceeded the norm in Fe 1.7–6.24, in Cd 1.3–1.7 times, and the concentrations of Cu, Zn, Mn, Pb in the aboveground and underground parts of the species remained within the normal range. It is revealed that the root system of Tanacetum vulgare L. contains higher values of the studied elements than the aerial parts. According to the intensity of absorption, the elements are arranged in the following sequence: Zn → Cd → Cu → Fe → Mn → Pb. According to the coefficient of biological accumulation in tansy, ordinary zinc and iron belong to the elements of weak accumulation, copper, manganese, lead, cadmium –to the elements of weak capture.


2018 ◽  
pp. 84-89
Author(s):  
S. V. Glazkov ◽  
S. V. Koptsev ◽  
N. A. Lesnikova ◽  
V. V. Bogdanova ◽  
T. K. Volodarskaya

The article analyzes modern technologies for storing fruit and vegetable products and presents possible options for their modernization. From this perspective, the improvement of canning technology using non-traditional methods of processing plant raw materials is an urgent task, the solution of which will allow preserving fruit and vegetable products, reduce the amount of waste and reduce the impact of vegetable processing plants on natural water bodies. Fruits and vegetables are perishable products and require special storage conditions from the moment they are available for sale to purchase by consumers. Keeping them fresh for as long as possible is quite a challenge, as some plants are able to continue maturing even after packaging and produce ethylene, which initiates certain changes in texture and color, tissue degradation. The authors pay special attention to the aspects of innovative technologies in the creation of edible films and coatings, which are currently the only type of biodegradable polymer packaging that does not require individual collection and special conditions of disposal. This is their main difference from traditional biodegradable plastics, which were originally proposed as an alternative to synthetic polymeric materials, and all were convinced that their creation once and for all will solve the problem of waste polymer packaging, which today threatens to become a global environmental disaster. At the same time, they are always more expensive than conventional plastics, in many cases can not be subjected to joint recycling; being in the deep layers of the landfill, they emit greenhouse gas methane. In addition, the raw materials for biodegradable plastics are provided by the same soil and water resources on which food is grown today (except for a very small amount of plastics produced from agricultural waste), and therefore their raw material base will always be limited. Recommendations are formulated on the organization of effective conservation of plant raw materials, intended for further processing or sale in retail and wholesale trade networks.


2021 ◽  
pp. 361-368
Author(s):  
Elena Vladimirovna Kalyuta ◽  
Mikhail Ilyich Maltsev ◽  
Vadim Ivanovich Markin ◽  
Elena Ivanovna Mashkina

Studies of the effect of biological products obtained from carboxymethylated products of processing plant raw materials on the growth and development of spring wheat (pre-sowing treatment of seeds with an aqueous solution of 150 g per 1 ton of seeds per 10 L of water) showed that the studied drugs influenced the growth processes of the culture. The activation of the growth and development of wheat in the first phases was traced, from the germination of grain (the appearance of embryonic roots), to the formation of a more powerful tillering of the culture. The studied preparations contributed to an increase in wheat yield in a small-plot experiment by 30–43%, in a field experiment – by 15%, in production conditions – by 21–32%. An increase in wheat yield under the influence of growth regulators does not always accompany an increase in the protein and gluten content in the grain. The direction of the change in the protein concentration in grain towards a decrease (for example, according to the non-fallow precursor, in the presence of the limiting nitrogen factor in the soil) can be defined as the "growth dilution effect" due to an increase in the yield per unit area, as well as productive tillering decisive influence on the degree of uniform ripening and grain quality.


2022 ◽  
pp. 21-23
Author(s):  
Магомед Эминович Ахмедов ◽  
Мафият Магомедовна Рахманова ◽  
Амият Фейзудиновна Демирова

Проблема повышения пищевой ценности консервируемых пищевых продуктов в герметически укупоренной таре может быть успешно решена на основе интенсификации процесса тепловой стерилизации. В работе представлены результаты исследований по совершенствованию технологии производства консервированного компота из винограда с использованием самоэксгаустируемой тары и интенсификации процесса тепловой стерилизации, являющейся наиболее широко используемым методом консервирования пищевых продуктов, совершенство которой во многом определяет пищевую ценность готового продукта. Известно, что продолжительность и температурный уровень стерилизационного процесса существенно могут изменить качественный и количественный состав витаминов, белков, углеводов, минеральных и органических кислот и других веществ, что зачастую приводит к снижению пищевой ценности продукта. На основе оценки традиционного стерилизационного режима разработаны и предложены новый способ и режимы стерилизации, которые обеспечивают сокращение продолжительности тепловой обработки более чем на 30 % и повышение пищевой ценности готовой продукции. Установлено, что предварительное повышение температуры продукта и использование самоэксгаустируемых стеклобанок обеспечивают сохранение витамина С в готовом продукте на 0,8 мг/% выше, чем по традиционной технологии. Полученные результаты представляют интерес для реализации на предприятиях по переработке растительного сырья. The problem of increasing the nutritional value of canned food products in hermetically sealed containers can be successfully solved by intensifying the process of thermal sterilization. The paper presents the results of research on improving the technology of production of canned compote from grapes using self-exgaustible containers and intensifying the process of thermal sterilization, which is the most widely used method of preserving food products and the perfection of which largely determines the nutritional value of the finished product. It is known that the duration and temperature level of the sterilization process can significantly change the qualitative and quantitative composition of vitamins, proteins, carbohydrates, mineral and organic acids and other substances, which often leads to a decrease in the nutritional value of the product. Based on the assessment of the traditional sterilization regime, a new method and modes of sterilization have been developed and proposed, which provide a reduction in the duration of heat treatment by more than 30 % and an increase in the nutritional value of the finished product. It was found that the use of a preliminary increase in the temperature of the product and the use of self-exgaustible glass jars ensures the preservation of vitamin C in the finished product by 0.8 mg/% higher than by traditional technology. The results obtained are of interest for implementation at plants processing plant raw materials.


2020 ◽  
Vol 6 (4) ◽  
pp. 89-97
Author(s):  
S.A. Kurbatov ◽  
◽  
V.M. Zubkova ◽  
◽  

in the conditions of the Kursk region, the analysis of soil samples and plant samples for the content of heavy metals was carried out. It is established that the soils of the studied areas are classified as having a high level of pollution in terms of their content. The priority pollutants of the soil are Pb, Zn, Cd, Cr, Ni, and Cu, the supply of which is mainly associated with the enterprises operating in this territory. The content of heavy metals in medicinal plant raw materials is estimated. For the first time, depending on the biological characteristics of Tilia cordata, Betula pendula, Plantago major, Urtica dioica, Achillea millefollium, data on the content of biologically active substances in conditions of technogenic pollution are presented, and the antioxidant activity of plants in areas characterized by various anthropogenic loads is studied.


Author(s):  
Nina A. Dyakova ◽  

The Voronezh region is traditionally the most important area of crop production and agriculture. The purpose of the research was to study the contamination with heavy metals of medicinal plant raw materials of the Voronezh region using the example of the roots of ordinary burdock, prepared in urbo- and agro-ecosystems, which have various anthropogenic effects on themselves. The accumulation of heavy metals (lead, mercury, cadmium, nickel, copper, zinc, cobalt, chromium) and arsenic in 51 samples of raw materials was studied. By comparing the heavy metal content in the upper soil layers of the region and the content of these elements in the roots of the bladder, it can be assumed that there are significant physiological barriers to the accumulation of ecotoxicants in the roots of the bladder, which is especially noticeable for elements such as lead, mercury, arsenic, cadmium, cobalt and chromium. At the same time, this type of medicinal vegetal raw material is able to selectively concentrate some heavy metals included in the active centers of enzyme systems (copper and zinc). Thus, for an ordinary bladder under conditions of anthropogenic load, an edaphotype is formed, which is as a result of selection in conditions of anthropogenic pollution of the external environment and the manifestation of adaptation to these conditions.


2021 ◽  
Vol 6 (4(37)) ◽  
pp. 16-23
Author(s):  
V. Gurin ◽  
V. Kuts ◽  
S. Maloshtan ◽  
V. Barkholenko ◽  
O. Kashuba ◽  
...  

A detailed description of an experimental mobile installation of a new generation, its complete set and the possibilities of supercritical CO2-extraction for processing plant raw materials are presented. New engineering solutions in the operation of a mechanical system were demonstrated, including an improved design of a high gas pressure throttle valve installed in storage tanks and innovations in the system for loading and unloading raw materials using removable nozzles. The operating parameters of the functional elements and their resource are indicated.


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