Key words: micronization, proteins, lysozyme, trypsin, supercritical fluids, carbon dioxide
The main features of microparticle formation from protein substances (trypsin, lysozyme) using supercritical fluids (SAA technique) are studied. Optical and scanning electron microscopies are applied to study the morphology of the particles. The size distribution of the particles is studied using a cascade restrictor. The method of deposition of the obtained particles onto haemostatic material «Collachit-G» is developed.
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7.0.100-2018
Production of new haemostatic materials by deposition of dispersed proteins onto porous matrixes using supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 5-11. - DOI:
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Sozdanie novyh gemostaticheskih materialov naneseniem dispergirovannyh belkovyh preparatov na poristye matricy s ispol'zovaniem sverhkriticheskogo dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 5-11. - DOI:
En
Production of new haemostatic materials by deposition of dispersed proteins onto porous matrixes using supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 5-11 (2010). https://doi.org/
Key words: sub- and supercritical water, aluminum, oxidation, nanoparticles
Oxidation of bulk aluminum samples by sub- and supercritical water leads to the formation of (AlOOH)n and (Al2O3)n nanoparticles. At uniform heating of reactants to 700 K, H2 evolution starts at 523 K. If supercritical water (665 K, 23.1 MPa) is injected into reactor containing aluminum sample, the time delay of oxidation is 140 s. The transmission electron microscopy study of oxidized aluminum samples shows that oxidation by supercritical water leads to the preferential formation of large (300÷400 nm) particles of α-Al2O3. Small (20÷50 nm) particles of γ-Al2O3 with insignificant contents of AlOOH together with large particles of α-Al2O3 are found when in aluminum is oxidized by water vapor in a programmed heating regime. The kinetic equations describing the rate of H2 production during the reaction of water with aluminum are derived and mechanisms of nanostructuring are discussed.
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7.0.100-2018
Formation of Al2O3 nanoparticles during aluminum oxidation by water in sub- and supercritical conditions / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 12-25. - DOI:
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Obrazovanie nanochastic Al2O3 pri okislenii alyuminiya vodoj pri sub- i sverhkriticheskih parametrah / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 12-25. - DOI:
En
Formation of Al2O3 nanoparticles during aluminum oxidation by water in sub- and supercritical conditions. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 12-25 (2010). https://doi.org/
Key words: thermodynamics, equilibrium fluctuations, kinetic theory of gases, chemical kinetics, rate of reaction, rate constant
The contribution of local fluctuations to the rates of thermal chemical reactions is evaluated for the first time. In the framework of the «ideal gas» model the fluctuation supplement to the rate constant is proportional to the specific volume of the particles and can reach 1—10 % at densities not exceeding a 20-fold normal atmosphere density. This is the reason why the accounting of local fluctuations in chemical kinetics should be made before the accounting of specific volumes in the equation of state.
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7.0.100-2018
Bimolecular thermal reaction rates subject to the local fluctuations of the medium / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 26-39. - DOI:
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Skorosti bimolekulyarnyh termicheskih reakcij s uchetom lokal'nyh fluktuacii sredy / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 26-39. - DOI:
En
Bimolecular thermal reaction rates subject to the local fluctuations of the medium. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 26-39 (2010). https://doi.org/
Key words: supported «nickel on kieselguhr» catalyst, regeneration, supercritical carbon dioxide
The nature of deactivating deposits forming on the supported «nickel on kiеselguhr» catalyst in the course of hydration of unsaturated compounds is analyzed. The possibility of regeneration of the catalyst using pure and polar additive (3 wt. % methanol) modified supercritical carbon dioxide (SC-CO2) is investigated at 70 and 150 °C in the pressure range 10÷30 MPa. The kinetic features of the catalyst regeneration with SC-CO2 is studied.
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7.0.100-2018
Regeneration of «nickel on kieselguhr» catalyst using supercritical carbon dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 40-51. - DOI:
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Regeneraciya katalizatora «nikel' na kizel'gure» s ispol'zovaniem sverhkriticheskogo dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 40-51. - DOI:
En
Regeneration of «nickel on kieselguhr» catalyst using supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 40-51 (2010). https://doi.org/
Key words: delignification, supercritical fluids, lignin, hydrogen peroxide, oxidation
Transformation of functional groups of lignin in the course of low-temperature delignification by hydrogen peroxide in the medium of supercritical (SC) CO2 during the preparation of pulp fiber semi-product was studied. Molecular-mass characteristics of lignins are affected by the oxidation. The analyses of functional groups demonstrate that both oxidation and substitution processes are taking place. Oxidation in SC-CO2 leads to the formation of water- and alkali-soluble lignin species, while the degree of oxidation of the latter is mild or low due to a relatively low oxidant consumption.
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7.0.100-2018
Oxidative delignification of wood in the supercritical carbon dioxide medium.
2. Functionalization of sprucewood lignin
/
–
Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика..
–
2010.
– Т. 5. – № 1.
– С.
52-62.
- DOI:
TRANSLIT
Okislitel'naya delignifikaciya drevesiny v srede sverhkriticheskogo dioksida ugleroda. 2. Funkcionalizaciya lignina elovoj drevesiny / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 52-62. - DOI:
En
Oxidative delignification of wood in the supercritical carbon dioxide medium.
2. Functionalization of sprucewood lignin.
Sverhkriticheskie Flyuidy: Teoriya i Praktika,
1,
52-62
(2010).
https://doi.org/
Key words: isomerization, n-alkanes, zeolite catalysts
The skeletal isomerization of n-butane, n-hexane and n-heptane in the supercritical (SC) conditions is studied over H-forms of zeolites (mordenite, beta, ZSM-5) at 260÷450 °C and 80÷130 bars. The isomerization of n-hexane and n-heptane is accompanied by such side processes as oligomerization and cracking. Selectivity with respect to the formation of branched isomers of these hydrocarbons does not exceed 70 and 30 %, respectively. ZSM-5 is shown to be the most durable catalyst, however selectivity towards the formation of branched isomers does not exceed 30 % even at 260—280 °C; it decreases down to 3 % at 400—450 °C. The fraction of aromatization products in these conditions does not exceed 15 %. The effect of the addition of C6—C7 n-alkanes onto the isomerization of n-pentane over H-mordenite in SC conditions (260 °C, 120 bars) is studied. It is demonstrated that the gradual decrease of activity is due to the formation of higher hydrocarbons.
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7.0.100-2018
Transformation of n-alkanes over H-forms of zeolites under supercritical conditions / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 63-72. - DOI:
TRANSLIT
Prevrashchenie n-alkanov na H-formah ceolitov v sverhkriticheskih usloviyah / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 63-72. - DOI:
En
Transformation of n-alkanes over H-forms of zeolites under supercritical conditions. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 63-72 (2010). https://doi.org/
Key words: supercritical fluid impregnation, halogen-containing polymers, spiroanthrooxazine
Matrix isolation of photochromic spiroanthrooxazine (SAO) molecules in the films of halogen-containing polymers (polyvinylchloride (PVC) and tetrafluoroethylene-vinylidene-difluoride (TVD copolymer)) performed using a supercritical fluid impregnation leads to the stabilization of an excited (colored) B-state of SAO, which does not relax into the colorless ground A-state. Such a long-living excited state can exist in the isomeric form that is characterized by the absorption band at Xmax = 535 nm ( В535, in the TVD matrix), as well as in the «normal» B-state (Xmax > 610 nm) with a minor contribution of В535-form (in PVC).
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7.0.100-2018
Long-living exited state of spiroanthrooxazine formed after its matrix isolation into halogen-containing polyolefines using supercritical fluid impregnation / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 73-78. - DOI:
TRANSLIT
Dolgozhivushchee vozbuzhdennoe sostoyanie spiroantrooksazina posle ego matrichnoj izolyacii v galogensoderzhashchih poliolefinah metodom sverhkriticheskoj flyuidnoj impregnacii / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 73-78. - DOI:
En
Long-living exited state of spiroanthrooxazine formed after its matrix isolation into halogen-containing polyolefines using supercritical fluid impregnation. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 73-78 (2010). https://doi.org/
Key words: pine sprouts, supercritical fluid extraction, radioprotective properties, antiatherogenic and antioxidant activity
Radioprotective properties of preparation obtained from pine sprouts by supercritical carbon dioxide (SC-CO2) extraction are studied using the experimental red marrow form of radiation disease as a model. Experiments are carried out with non-linear white mice. The SC-CO2 extract of pine sprouts is shown to display radioprotective activity. The preclinical trial of antiatherogenic and antioxidant activity of this extract are executed on male rates (Wistar line) in the conditions of experimental hyperlipidemia.
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7.0.100-2018
Radioprotective and prophylactic properties of biologically active components of pine sprouts obtained by supercritical fluid extraction / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 79-87. - DOI:
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Radioprotektornye i profilakticheskie svojstva biologicheski aktivnyh veshchestv, poluchennyh sverhkriticheskoj flyuidnoj ekstrakciej pobegov sosny / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 79-87. - DOI:
En
Radioprotective and prophylactic properties of biologically active components of pine sprouts obtained by supercritical fluid extraction. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 79-87 (2010). https://doi.org/
Key words: supercritical extraction, carbon dioxide, garlic, extract, disulfides, biocides
Garlic (Allium sativum L.) extracts were obtained using CO2-supercritical extraction. The extracts were separated into individual components by preparative HPLC and GC methods. Some of the isolated substances (allicin, diallyldisulfide, diallyltrisulfide) along with two synthetic analogs were tested as potential biocides using the following models: Candida utilis, Bacillus cereus, Pseudomonas aurantiaca, and Escherichia coli. Some of tested substances revealed high efficacy as biocides, in particular, against gram-negative cultures. The obtained results give evidence of good perspectives of sulfur-containing gar1ic components and their synthetic analogs as potential antimicrobial agents.
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7.0.100-2018
The application of supercritical fluid extraction for the development of novel potential biocides on the base of garlic (Allium sativum L.) / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 1. – С. 88-100. - DOI:
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Ispol'zovanie sverhkriticheskoj flyuidnoj ekstrakcii dlya razrabotki novyh potencial'nyh biocidov na osnove chesnoka (Allium sativum L.) / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 1. – S. 88-100. - DOI:
En
The application of supercritical fluid extraction for the development of novel potential biocides on the base of garlic (Allium sativum L.). Sverhkriticheskie Flyuidy: Teoriya i Praktika, 1, 88-100 (2010). https://doi.org/
doi:
Key words: supercritical water, organic pollutants, global phase behavior, octanol — water partition coefficient
Methods of computation and ranking of possible heterogeneous fluid equilibria in the systems «water — organic pollutant» are discussed in terms of modern notions about global phase diagrams of binary systems. The main classes of environmentally significant chemicals (such as polycyclic aromatic hydrocarbons, polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins, furans, and selected pesticides) are studied. The binary interaction parameters k12 for the one-fluid model of mixture were determined based on their revealed correlation with octanol — water partition coefficients KOW. Analytical expressions for the prediction of azeotropy in binary mixtures are suggested and the possibility of azeotropic behavior in aqueous solutions of several organic compounds is evaluated. The results of simulations of phase equilibria and critical curves for some mixtures of supercritical water with organic pollutants based directly on their molecular structure are presented.
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7.0.100-2018
Phase Behavior of Organic Pollutants in Supercritical Water / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 4-20. - DOI:
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Fazovoe povedenie organicheskih zagryaznitelej v sverhkriticheskoj vode / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 4-20. - DOI:
En
Phase Behavior of Organic Pollutants in Supercritical Water. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 4-20 (2010). https://doi.org/
Synthesis of Glycyrrhetinic Acid via Hydrolysis of Licorice Root Extract in Subcritical Water Medium
Key words: subcritical water, triterpene glycosides, glycyrrhetinic acid (the aglycon of glycyrrhizic acid), licorice root, high-performance liquid chromatography (HPLC), 13С NMR spectroscopy
A method for glycyrrhetinic acid (the aglycon of glycyrrhizic acid) synthesis via a sub-critical water hydrolysis of licorice root extract is developed. Its high efficiency in the comparison with a conventional hydrolysis is demonstrated. The high-performance liquid chromatography is used to prove the presence of glycyrrhetinic acid and to determine its concentration in the product. Using the 13С NMR spectroscopy it is proved that glycyrrhetinic acid obtained in the sub-critical water medium has a β-configuration in theС18 carbon atom environment.
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7.0.100-2018
Synthesis of Glycyrrhetinic Acid via Hydrolysis of Licorice Root Extract in Subcritical Water Medium / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 21-27. - DOI:
TRANSLIT
Poluchenie glicirretinovoj kisloty gidrolizom ekstrakta kornya solodki v srede subkriticheskoj vody / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 21-27. - DOI:
En
Synthesis of Glycyrrhetinic Acid via Hydrolysis of Licorice Root Extract in Subcritical Water Medium. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 21-27 (2010). https://doi.org/
Key words: supercritical fluids, supercritical phenomena in ternary systems, stable and metastable regions of immiscibility
Some features of phase equilibria in ternary systems with one volatile component and with a region of homogeneous supercritical fluid (SCF) in one of binary sub-systems (with two critical end-points p and Q) are analyzed. It is demonstrated that heterogenization of SCF that is spreading into a ternary system from the boundary binary sub-system of 2d' type starts from monovariant critical phenomena in saturated solutions (liquid1 = liquid2 - solid) or (gas = liquid - solid), which pass through extremal parameters (temperature, composition) and form such special critical equilibria as double critical end-point (liquid1 = liquid2 - solid, gas = liquid - solid, liquid1 = liquid2 - gas) or double homogeneous points (liquid1 = liquid2 - solid о gas = liquid - solid). Ternary nonvariant points (liquid1 = liquid2 = gas, liquid1 = liquid2 - gas - solid and liquid1 = gas - liquid2 - solid) appear at the cross-sections of monovariant critical and non-critical curves.
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7.0.100-2018
Heterogenization of Supercritical Fluids and Non-variant Critical Equilibria in Triple Systems with One Volatile Component (Considering Salt-Water Systems as Examples) / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 28-44. - DOI:
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Geterogenizaciya sverhkriticheskih flyuidov i nonvariantnye kriticheskie ravnovesiya v trojnyh smesyah s odnim letuchim komponentom (na primere vodno-solevyh sistem) / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 28-44. - DOI:
En
Heterogenization of Supercritical Fluids and Non-variant Critical Equilibria in Triple Systems with One Volatile Component (Considering Salt-Water Systems as Examples). Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 28-44 (2010). https://doi.org/
Possible Mechanism of Oil Formation in the Flow of Supercritical Fluid Illustrated by Carbon Dioxide
Key words: supercritical fluid extraction, oil formation, mechanochemical transformation, organic matter, petroleum hydrocarbons
The experiment on the supercritical (SC) CO2 extraction of organic matter from rocks and soils showed that the SC fluid can dissolve, transfer and accumulate petroleumlike hydrocarbons, including relict ones. Based on the obtained results, it was hypothesized
that during the SC extraction the dissolution of organic substances is accompanied by their mechanochemical transformation in micropores and microcracks of solid matter. The resulting changes in composition, structure and distribution of individual hydrocarbons are similar to those, supposedly, taking place in petroleum-mother rocks. Thus, one can assume the possibility of rapid mechanochemical transformation of dispersed organic matter of sedimentary rocks in a flow of plutonic SC fluid, which, in turn, would allow one to re-consider the time scale of oil accumulation from millions to, possibly, hundreds of years.
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7.0.100-2018
Possible Mechanism of Oil Formation in the Flow of Supercritical Fluid Illustrated by Carbon Dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 44-55. - DOI:
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Vozmozhnyj mekhanizm obrazovaniya nefti v potoke sverhkriticheskogo flyuida na primere dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 44-55. - DOI:
En
Possible Mechanism of Oil Formation in the Flow of Supercritical Fluid Illustrated by Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 44-55 (2010). https://doi.org/
Key words: supercritical carbon dioxide, europium β-diketonates, fluoropolymer, photoluminescence, temperature quenching
Optical properties of the fluoracrilate based fluoropolymers doped with Eu(fod)3, Eu(fod)3phen and Eu(tta)3 by supercritical fluid impregnation are studied. Effects of polymer matrix type on the efficiency supercritical fluid impregnation and optical properties of impregnated polymers are revealed. A comparative analysis of the quantum yield (&lambdaexc = 300 and 380 nm) and thermosensitivity of Eu3+ ions photoluminescence depending on the type of ligand and the chemical structure of polymers is performed. The effect of supercritical fluid extraction of photoinitiator residuals from doped fluoropolymer on their optical bleaching at wavelengths below 300 nm is established.
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7.0.100-2018
Modification of Optical Properties of Fluoropolymers by Supercritical Fluid Impregnation with β-diketonates of Europium / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 55-69. - DOI:
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Modifikaciya opticheskih svojstv polimerov pri sverhkriticheskoj flyuidnoj impregnacii β-diketonatami evropiya / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 55-69. - DOI:
En
Modification of Optical Properties of Fluoropolymers by Supercritical Fluid Impregnation with β-diketonates of Europium. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 55-69 (2010). https://doi.org/
Key words: supercritical carbon dioxide, methylmetacrylate, styrol, co-polymers, polymer nanocomposites
We report about thin polymer particles synthesis based on radical co-polymerization of methylmetacrylate and styrol in supercritical СO2 medium. We utilize supercritical СO2 soluble polydimethylsiloxan metacrylate as a dispersion agent, which allow us to produce almost monosize particles. Co-polymer spherical powder, with typical sizes about 1 micron and molecular weight Mw ~ 36000 has higher thermostability compare to similar Mw polymethylmetacrylate. We have shown the possibility of mechanical and hydrophobic co-polymer properties controlled changes with varying of monomer charge ratio.
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7.0.100-2018
Dispersion Copolymerization of Methylmetacrylate and Styrol in Supercritical Dioxide Medium / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 70-79. - DOI:
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Dispersionnaya sopolimerizaciya metilmetakrilata i stirola v sverhkriticheskom diokside ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 70-79. - DOI:
En
Dispersion Copolymerization of Methylmetacrylate and Styrol in Supercritical Dioxide Medium. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 70-79 (2010). https://doi.org/
Key words: polymer nanocomposite, supercritical fluid impregnation, nanocrystalline silicon, photoluminescence
With the use of supercritical carbon dioxide (SC-СO2) a process of matrix immobilization of photoluminescent silicon nanocrystals (nc-Si) in polytetrafluoroethylene microparticles (mp-PTFE) is implemented, which leads to the formation of photoluminescent nanocomposite mp-PTFE/nc-Si containing ~103 ÷104 of nc-Si in one PTFE particle (1—2 microns in size). This process is based on the effect of polymer swelling in SC-СO2, efficient transport of nanoparticles into internal free volume of polymer with SC-СO2, and shrinkage of nanocomposite after the release of СO2 thus preventing their subsequent agglutination. Particles of nc-Si photoluminescent in the visible spectrum range were synthesized from silicon suboxide powder (SiOx, x ~ 1) heated at temperatures from 25 °C to 950 °C and next etched in concentrated hydrofluoric acid. The hydrosilylation procedure was used to attach 1-octadecene molecules to the surface of nc-Si. As a result, the photoluminescence intensity of nc-Si increased substantially. According to TEM images and small angle X-ray diffraction results, the maximum size of nc-Si particles did not exceed 5 nm and 7 nm respectively, and the core of these nanoparticles consisted of crystalline silicon. The structure and spectral properties of the initial nc-Si particles and synthesized photoluminescent nanocomposite mp-PTFE/nc-Si microparticles were studied.
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7.0.100-2018
Immobilization of Luminescent Nanosilicon in the Microfine Polytetrafluoroethylene Matrix by Supercritical Carbon Dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 2. – С. 79-90. - DOI:
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Immobilizaciya lyuminesciruyushchego nanokremniya v matrice mikrodispersnogo politetraftoretilena s pomoshch'yu sverhkriticheskogo dioksida ugleroda / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 2. – S. 79-90. - DOI:
En
Immobilization of Luminescent Nanosilicon in the Microfine Polytetrafluoroethylene Matrix by Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 79-90 (2010). https://doi.org/
Key words: sapropel, extraction, liquid and supercritical carbon dioxide, aminoacids, vitamins, biologically active substances
The possibility of utilization of extraction with liquid and supercritical carbon dioxide for the isolation of biologically active substances from sapropels is demonstrated. The chemical composition of extracts is determined using a high performance liquid chromatography. The yield of total extract and efficiency of isolation of different components are varied with experimental conditions (temperature, pressure, extraction time).
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7.0.100-2018
Extraction of Biologically Active Compounds from Sapropels Using Liquid and Supercritical Carbon Dioxide / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2010. – Т. 5. – № 3. – С. 4-14. - DOI:
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Ispol'zovanie do- i sverhkriticheskogo dioksida ugleroda dlya izvlecheniya otdel'nyh grupp biologicheski aktivnyh veshchestv iz sapropelej / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2010. – Т. 5. – № 3. – S. 4-14. - DOI:
En
Extraction of Biologically Active Compounds from Sapropels Using Liquid and Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 4-14 (2010). https://doi.org/