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Gmoshinski IV, Shipelin VA, Kolobanov AI, Sokolov IE, Maisaya KZ, Khotimchenko SA. [Methods for the identification and quantification of microplastics in foods (a review)]. Vopr Pitan 2023; 92:87-102. [PMID: 38198409 DOI: 10.33029/0042-8833-2023-92-5-87-102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 09/26/2023] [Indexed: 01/12/2024]
Abstract
The adverse effects of microplastics (MP) found in food on the health have recently been recognized as a new source of human health risks. In order to evaluate and minimize them, it is necessary to evaluate the exposure using sensitive and specific methods. The aim of the research was the substantiation of methodological approaches to the identification and quantification of microplastics in food based on the analysis of literature data. Material and methods. Literature selection was carried out using the PubMed international reference database for the period from 2014 to 2023 using keywords corresponding to the context of the research theme. A total of 159 sources were selected, of which 94 original and review papers were included in the review according to the criteria of their relevance to the problem under consideration, scientific reliability and completeness. Results. At present, various approaches have been developed that make it possible to isolate MPs from complex bioorganic matrices (such as, for example, seafood), classify them by chemical composition, and quantify their content through the mass or number of particles. Among the most developed physic-chemical methods for the analysis of MPs are Fourier transform IR spectrometry and Raman microspectrometry, pyrolysis gas chromatography - mass spectrometry, thermogravimetric analysis, as well as approaches based on liquid chromatography, microfluorimetry, analytical scanning and transmission electron microscopy and others. Unsolved problems in the field of MP research in food include the high laboriousness and low performance of the identification technologies used, the lack of reference and standard samples of MP, the complexity of the equipment used, which makes it difficult to use it for routine hygienic control. The issue of the influence of MP aging degree on the results of its qualitative and quantitative determination has not been sufficiently studied. Some hopes in the field of development of rapid analysis of MTs are pinned on the use of aptamers. Conclusion. Existing analytical methods make it possible to determine the content of MPs in environmental objects, but further improvement and validation of these methods is required in relation to the assessment of the content of MPs in various types of food.
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Affiliation(s)
- I V Gmoshinski
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - V A Shipelin
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
- Russian University of Economics named after G.V. Plekhanov, 115093, Moscow, Russian Federation
- Peoples' Friendship University of Russia named after Patrice Lumumba, 117198, Moscow, Russian Federation
| | - A I Kolobanov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - I E Sokolov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - K Z Maisaya
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - S A Khotimchenko
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
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Matveev EY, Levitskaya VY, Novikov SS, Nichugovskii AI, Sokolov IE, Lukashevich SV, Kubasov AS, Zhizin KY, Kuznetsov NT. Synthesis and Study of Derivatives of the [B10H10]2– Anion with Primary Amines. RUSS J INORG CHEM+ 2022. [DOI: 10.1134/s0036023622601532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Bagryantseva OV, Gmoshinski IV, Shipelin VA, Sheveleva SA, Riger NA, Shumakova AA, Efimochkina NR, Markova YM, Tsurikova NV, Smotrina YV, Sokolov IE, Kolobanov AI, Khotimchenko SA. [Assessment of the influence of an enzymal preparation - a complex of glucoamylase and xylanase from Aspergillus awamori Xyl T-15 on the intestinal microbiom and immunological indicators of rats]. Vopr Pitan 2022; 91:42-52. [PMID: 35852977 DOI: 10.33029/0042-8833-2022-91-3-42-52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/04/2022] [Indexed: 06/15/2023]
Abstract
The requirements for the safety of food products obtained by microbial synthesis are including as obligation for to conduct toxicological studies - the study of various biochemical and immunological markers of toxic effects. The necessity of these studies is explained by a possible change in the structure of food ingredients produced by a microbial cell and, consequently, a change in their biological properties, as well as the possible presence of living forms and/or DNA of producer strains or of their toxic metabolites in these ingredients. At the same time, it is well known that the nutrient composition of foods has a significant impact on the composition and properties of microorganisms that make up the gut microbiome, which, in turn, determines the immune status. The purpose of the research was to justify the analyses of gut microbiocenosis composition for inclusion in the protocol of safety investigation of foods obtained by microbial synthesis [on the example of an enzyme preparation (EP) - a complex of glucoamylase and xylanase from a genetically modified strain of Aspergillus awamori Xyl T-15]. Material and methods. In experimental studies carried out for 80 days, Wistar rats (males and females) were used. The study of the effect of EP (a complex of glucoamylase and xylanase from a genetically modified Aspergillus awamori Xyl T-15 strain) in dozes 10, 100 and 1000 mg/kg body mass on the cecum microbiome and the immune status (content of cytokines and chemokines: IL-1a, IL-4, IL-6, IL-10, IL-17A, INF-γ, TNF-α, MCP-1, MIP-1a and Regulated on Activation Normal T-cell Expressed and Secreted - RANTES) was carried out. Results. It has been shown that EP - a complex of glucoamylase and xylanase from A. awamori Xyl T-15 at doses of 100 mg/kg or more causes mild disturbances in the composition of gut microbiocenosis. At the same time, these disorders have a significant immunomodulat ory and immunotoxic effect on the body, which manifests itself in a dose-dependent change in the profile of pro-inflammatory cytokines and chemokines in blood and spleen. The adverse effect of EP on the body is probably due to the formation of metabolites that are not formed during usual digestive processes in the gastrointestinal tract. The minimum effective dose (LOAEL) of EP was 100 mg/kg body weight In accordance with established requirements, the activity of the EP should not appear in ready-to-use food. Subject to this requirement, amount of EP entering the body cannot exceed the established LOAEL level. Therefore, a complex of glucoamylase and xylanase can be used in food industry, subject to the establishment of regulations «for technological purposes» for A. awamori Xyl T-15 strain. Conclusion. The data obtained on the relationship between the state of the microbiome and the immune status upon the introduction of EP indicate the need to include indicators of the state of gut microbiocenosis in the test protocol of safety.
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Affiliation(s)
- O V Bagryantseva
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
- I.M. Sechenov First Moscow State Medical University of Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - I V Gmoshinski
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - V A Shipelin
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - S A Sheveleva
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - N A Riger
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - A A Shumakova
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - N R Efimochkina
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - Yu M Markova
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - N V Tsurikova
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - Yu V Smotrina
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - I E Sokolov
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - A I Kolobanov
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
| | - S A Khotimchenko
- Federal Research Centre of Nutrition, Biotechnology and Foоd Safety, 109240, Moscow, Russian Federation
- I.M. Sechenov First Moscow State Medical University of Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
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Sokolov IE, Efremova EI, Boeva NM, Erofeeva AR, Kolobanov AI, Sigov AS, Fomichev VV. Analysis of the Stages of Yittrum Iron Garnet Formation from a Precursor Obtained by the Supercritical Antisolvent CO2 Precipitation Technique. Russ J Phys Chem B 2022. [DOI: 10.1134/s1990793121070150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Bagryantseva OV, Gmoshinski IV, Shipelin VA, Tsurikova NV, Sheveleva SA, Shumakova AA, Musaeva AD, Trushina EN, Mustafina OK, Soto CJ, Minaeva LP, Sedova IB, Selifanov AV, Sokolov IE, Kolobanov AI, Khotimchenko SA. [Risk assessment of glucoamylase and xylanase complex from Aspergillus awamori Xyl T-15]. Vopr Pitan 2021; 90:28-39. [PMID: 34264554 DOI: 10.33029/0042-8833-2021-90-3-28-39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/17/2021] [Indexed: 11/11/2022]
Abstract
The introduction of methods for food production using microbial synthesis, including those obtained with the help of genetically modified (GM) microorganisms, at the present stage, allows to increase production volumes and reduce the cost of food. At the same time, such products in accordance with TR CU 021/2011 "On food safety" are classified as a "novel food"» and can be placed on the market only after its risk estimation for health. The emergence of new data and research methods in the last years has made it necessary to improve the risk assessment system for this category of food. The aim of the research is to develope risk assessment approaches of food obtained by microbial synthesis on the example of the GM strain Aspergillus awamori Xyl T-15 and the enzyme preparation (EP) (a complex of glucoamylase and xylanase) produced by it. Material and methods. Outbred ICR mice (CD-1) and Wistar rats (males and females) were used in the experimental studies. Investigations of GM strain A. awamori Xyl T-15 virulence and its ability to disseminate internal organs have been carried out. Acute and subacute (during 80 days) toxicity of EP (a complex of glucoamylase and xylanase) have been studied. Results. The presented experimental data allow us to make a conclusion about the avirulence of the A. awamori Xyl T-15 strain, the lack of ability to disseminate internal organs (invasiveness). At the same time, the strain is characterized by the ability to produce mycotoxins (ochratoxin, fumonisin B2, T-2 and HT-2 toxins). The EP, a complex of glucoamylase and xylanase from A. awamori Xyl T-15, has a low oral acute toxicity for rats (LD50>5000 mg/kg). I ntragastric EP administration at doses of 10, 100 and 1000 mg/kg of body weight during 80 days had not revealed adversely affect on the rate of weight gain in animals, indicators of anxiety and cognitive function, and some studied biochemical indicators. At a dose of 100 mg/kg b.w. or more, there were changes in the relative mass of organs (lungs, kidneys, adrenal glands), small shifts in the parameters of erythropoiesis and leukocyte formula, at a dose of 1000 mg/kg b.w. - an increase in oxidative DNA destruction. T he most pronounced and dose-dependent was the effect of the EP on hepatocyte apoptosis. According to this indicator, the not observed adverse effect level (NOAEL) for EP is not more than 100 mg/kg b.w. in terms of protein. The main target organ for the toxic effect of EP is the liver. Conclusion. The data obtained demonstrate the necessity to conduct an additional analysis of the risks of possible negative effects of EP, namely, to study its impact on the gut microbiocenosis and the immune status of experimental animals, to analyze the presence of determinants of pathogenicity and antibiotic resistance, DNA of selective marker genes of A. awamori Xyl T-15 strain by PCR analysis and DNA sequencing methods.
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Affiliation(s)
- O V Bagryantseva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,I.M. Sechenov First Moscow State Medical University of Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - I V Gmoshinski
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - V A Shipelin
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,Plekhanov Russian University of Economics, 117997, Moscow, Russian Federation
| | - N V Tsurikova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - S A Sheveleva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A A Shumakova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A D Musaeva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - E N Trushina
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - O K Mustafina
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - C J Soto
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - L P Minaeva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - I B Sedova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A V Selifanov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - I E Sokolov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A I Kolobanov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - S A Khotimchenko
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,I.M. Sechenov First Moscow State Medical University of Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
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Bagryantseva OV, Sokolov IE, Kolobanov AI, Elizarova EV, Khotimchenko SA. [On the regulate tropane alkaloids in grain products]. Vopr Pitan 2020; 89:54-61. [PMID: 32790258 DOI: 10.24411/0042-8833-2020-10029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 05/18/2020] [Indexed: 11/20/2022]
Abstract
Tropane alkaloids (TA) are metabolites of various plant species in the families Brassicaceae, Solanaceae and Erythroxylaceae. Seeds of these weeds are found in flax, soy, sorghum, millet, sunflower, buckwheat and food products obtained from them, in herbals used as a part of food supplements and herbal teas. Despite the fact that the contamination of grain seeds by various parts of weeds reduces by sorting and clean up, a certain amount of TA gets into processed foods. An analysis of the consumption of TA with all types of foods, conducted by the European food safety Agency (EFSA), showed that TA intake with ration of various population groups can exceed the established level of single safe intake (ARfD) - 0.016 μg/kg of body weight (by 11-18% for adults, and by 5-25% for children depending on the age). The aim of the research was to justify the need to introduce regulations for the safe content of TA in grain products. Material and methods. The study process used hygiene, analytical methods, expert assessments on the basis of generalization and analysis of contemporary scientific researches published in databases Scopus, Web of Science, PubMed, RISC, Russian and international regulatory and legislative documents. Results. The established risks associated with TA contamination of grain and grain-based foods, as well as food supplements based on herbs and herbal teas, make it necessary to monitor food products for it's presence. Conclusion. Due to the greater study of the risks associated with the presence of atropine and scopolamine in foods, scientific justification of safe levels of these TA in foods based on cereals, including baby foods for children under 3 years old containi ng millet, sorghum, buckwheat or products based on these cereals is required.
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Affiliation(s)
- O V Bagryantseva
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,I.M. Sechenov First Moscow State Medical University of the Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
| | - I E Sokolov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - A I Kolobanov
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - E V Elizarova
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation
| | - S A Khotimchenko
- Federal Research Centre of Nutrition, Biotechnology and Food Safety, 109240, Moscow, Russian Federation.,I.M. Sechenov First Moscow State Medical University of the Ministry of Healthcare of the Russian Federation (Sechenov University), 119991, Moscow, Russian Federation
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Shamsiev RS, Sokolov IE, Danilov FO, Flid VR. Theoretical Study of the Mechanism of Propionic Acid Deoxygenation on the Palladium Surface. Kinet Catal 2019. [DOI: 10.1134/s0023158419050094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Soldatov DV, Ripmeester JA, Shergina SI, Sokolov IE, Zanina AS, Gromilov SA, Dyadin YA. α- and β-Bis(1,1,1-trifluoro-5,5-dimethyl-5-methoxyacetylacetonato)copper(II): Transforming the Dense Polymorph into a Versatile New Microporous Framework. J Am Chem Soc 1999. [DOI: 10.1021/ja981443u] [Citation(s) in RCA: 145] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. V. Soldatov
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - J. A. Ripmeester
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - S. I. Shergina
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - I. E. Sokolov
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - A. S. Zanina
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - S. A. Gromilov
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Yu. A. Dyadin
- Contribution from the Steacie Institute for Molecular Sciences, National Research Council of Canada, Ottawa K1A 0R6, Canada, Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia, and Institute of Chemical Kinetics and Combustion, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
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Zanina AS, Shergina SI, Sokolov IE, Shvartsberg MS. Alkylation of sterically hindered 1,3-diketones under phase-transfer conditions. Russ Chem Bull 1996. [DOI: 10.1007/bf01435389] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sokolov IE, Zanina AS, Shergina SI, Shvartsberg MS. Sterically hindered 1,3-diketones in the Michael reaction. Russ Chem Bull 1996. [DOI: 10.1007/bf01433748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Marinkina GA, Zanina AS, Shergina SI, Sokolov IE, Kotlyarevskii IL. Effective extractants for the extraction of lithium from aqueous solutions containing sodium and potassium compounds. Russ Chem Bull 1992. [DOI: 10.1007/bf00866576] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kotlyarevskii IL, Zanina AS, Shergina SI, Sokolov IE, Shvarts EM, Ignash RT, Tel'zhenskaya PN. New synthesis of monomethyl ethers of triols ? Extraction agents for boric acid. Russ Chem Bull 1987. [DOI: 10.1007/bf00955840] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zanina AS, Shergina SI, Sokolov IE, Kotlyarevskii IL. Acylation of acetylene compounds in the presence of divalent copper salts and chelates. Russ Chem Bull 1986. [DOI: 10.1007/bf00954228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kotlyarevskii IL, Shergina SI, Sokolov IE, Zanina AS. Synthesis of acetylenic ketones from straight-chain acid chlorides. Russ Chem Bull 1984. [DOI: 10.1007/bf00995712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Shergina SI, Sokolov IE, Zanina AS, Kotlyarevskii IL. Reaction of terminal acetylenes with acid chlorides in the presence of copper salts. Russ Chem Bull 1984. [DOI: 10.1007/bf00995713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Sokolov IE, Zanina AS, Shergina SI, El'tsina TG, Kotlyarevskii IL. Synthesis of ?-methoxyalkynyl ketones. Russ Chem Bull 1983. [DOI: 10.1007/bf00954306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zanina AS, Shergina SI, Khabibulina GN, Sokolov IE, Kirchanov AA, Myasnikova RN, Kotlyarevskii IL. Synthesis of ?-diketones and acetylenic ketones from ethers of tertiary diacetylenic alcohols. Russ Chem Bull 1977. [DOI: 10.1007/bf00924568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zanina AS, Kotlyarevskii IL, Shergina SI, Sokolov IE, Kirchanov AA. Synthesis of ethers of tertiary diacetylenic alcohols. Russ Chem Bull 1977. [DOI: 10.1007/bf00928541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Shergina SI, Zanina AS, Sokolov IE, Kotlyarevskii IL. Condensation of diacetylene with carbonyl compounds in the presence of tetramethylammonium hydroxide. Russ Chem Bull 1973. [DOI: 10.1007/bf00932124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Zanina AS, Kotlyarevskii IL, Shergina SI, Sokolov IE, Shishkina LI. Method for the condensation of diacetylene with carbonyl compounds. Russ Chem Bull 1972. [DOI: 10.1007/bf00863244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kotlyarevskii IL, Shergina SI, Sokolov IE, Zanina AS. Soluble poly-1,2-bis-(3?-ethynyl-4?-alkoxyphenyl)ethanes. Russ Chem Bull 1971. [DOI: 10.1007/bf00853911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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