Key words: supercritical CO2, inactivation, sterilization, microorganisms
The studies, in which the possibility of utilization of compressed CO2 as an environmentfriendly
(«green») alternative sterilizing agent is demonstrated, are reviewed. Also,
suggested in literature mechanisms of inactivating action of CO2 onto various
microorganisms are analyzed as influenced by various operation factors such as pressure,
temperature, duration, type of microbes, and treated material.
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ГОСТ
7.0.100-2018
Inactivation of Microorganisms Using Supercritical CO2 / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2008. – Т. 3. – № 3. – С. 3-12. - DOI:
TRANSLIT
Inaktivaciya mikroorganizmov v srede sverhkriticheskogo CO2 / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 3-12. - DOI:
En
Inactivation of Microorganisms Using Supercritical CO2. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 3-12 (2008). https://doi.org/
Key words: regular equation of state, scaling, crossover function, critical point, approximation of Р-ρ-Т data, helium, sulfur hexafluoride
A new joint equation of state (EOS) is proposed to describe the Р-ρ-Т data on 4Не and
SF6 in a wide range of densities -1 < Δρ < 1,
where Δρ = (ρ-ρc)/ρc, and reduced tempe
ratures -0,3 < τ < 0,3, where τ = (T - Tc)/Tc,
including the critical region. A dimensionless joint EOS is written in terms of explicit
functions of Δρ and τ, and includes a regular
part that approximates experimental data beyond a critical region, a nonparametric scaling
equation of state which adequately describes the P-&rho-T data near critical
points and a crossover function that smoothly combines these two equations of state. A crossover
function is proposed as a classical exponential function, which reduces the influence of
density and temperature fluctuations typical for a critical region and damping at
increasing distance from the critical point. Two various equations of state were taken
as a regular part of the joint EOS: 1) a new cubic EOS proposed in this work with five
system-dependent fitting constants, three of which are conjugated by conditions in a
critical point; 2) a physically valid Kaplun Meshalkin EOS with seven fitting constants
(three of which are also related to critical conditions) to describe the data within the
above limits, including liquid state. As a scaling part of EOS, a nonparametric scaling
equation of state (as an explicit function of reduced variables Dr and t with three
system-dependent constants) suggested by authors is used. In the joint EOS, like in
classical equations of state, the (∂P/∂v)T=0,
and (∂2P/∂v2)T=0
conditions are satisfied in a critical point and binodal and spinodal are present.
Approximation of the most accurate data for 4Не and SF6 by the new
joint EOS indicates that this equation correctly describes the Р-ρ-Т data
within error ranges of ±0,5% with respect to pressure.
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ГОСТ
7.0.100-2018
Joint Equation of State for Fluids, Including Classical and Scaling Parts / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2008. – Т. 3. – № 3. – С. 13-29. - DOI:
TRANSLIT
Ob"edinennoe uravnenie sostoyaniya flyuidov, vklyuchayushchee regulyarnuyu i skejlingovuyu chasti / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 13-29. - DOI:
En
Joint Equation of State for Fluids, Including Classical and Scaling Parts. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 13-29 (2008). https://doi.org/
Key words: scattering, supercritical media, intensity fluctuations, scattering anisotropy
The results of experimental studies of static and dynamic scattering of laser light in CO2 under the conditions of transition from supercritical to gas phase with the cooling rate 4 x 10-4 degree/sec are presented. It is found that both angular light distribution and first order spectral momentum of fluctuations of forward scattered light intensity are changed insignificantly when critical parameter of media is changed in the interval 0 < |T/Tc - 1| ≤ 5 x 10-5. The increase of critical parameter |T/Tc - 1| > 5 x 10-5 causes the reduction of scattered light intensity and the rise of first order spectral momentum of intensity fluctuations. Such behavior assumes the existence of «metastable» ensemble of slowly changed in size scattered centers.
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ГОСТ
7.0.100-2018
Small-Angle Light Scattering on Density Fluctuations of Supercritical Carbon Dioxide under the Conditions of Fast Cooling
/
–
Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика..
–
2008.
– Т. 3. – № 3.
– С.
30-38.
- DOI:
TRANSLIT
Osobennosti malouglovogo rasseyaniya sveta na fluktuaciyah plotnosti sverhkriticheskogo SO2 v usloviyah bystrogo ohlazhdeniya / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 30-38. - DOI:
En
Small-Angle Light Scattering on Density Fluctuations of Supercritical Carbon Dioxide under the Conditions of Fast Cooling
.
Sverhkriticheskie Flyuidy: Teoriya i Praktika,
3,
30-38
(2008).
https://doi.org/
Key words: supercritical fluid extraction, oil-bearing crops, laboratory unit, numerical modeling, optimal regime of extraction
The description of the laboratory unit for supercritical fluid extraction of ground oilbearing
crops seeds in their granular layer is given. The data of laboratory measurements
is utilized for calibration of mathematical model of the process. The numerical form
of the model allows one to scale-up the experimental results and to determine the
optimal parameters of technological process.
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ГОСТ
7.0.100-2018
Determination of Technological Parameters of Oil-Bearing Crops Seeds Supercritical Extraction Process / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2008. – Т. 3. – № 3. – С. 39-47. - DOI:
TRANSLIT
Opredelenie tekhnologicheskih parametrov processa sverhkriticheskoj flyuidnoj ekstrakcii semyan maslichnyh kul'tur / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 39-47. - DOI:
En
Determination of Technological Parameters of Oil-Bearing Crops Seeds Supercritical Extraction Process. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 39-47 (2008). https://doi.org/
Key words: lanoline, raw lanoline, wool wax, supercritical carbon dioxide, co-solvent, acidic number
Effects of pressure and addition of modifiers (co-solvents) onto the yield and acidity
of raw lanoline (wool wax) obtained by supercritical carbon dioxide (SC-CO2)
extraction from Kazakh merino wool are studied. It is demonstrated that the use of
pure SC-CO2 at pressures above 50 MPa is optimal to improve the quality of this semiproduct.
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ГОСТ
7.0.100-2018
Effect of Conditions of Wool Treatment in Supercritical Carbon Dioxide on Yield and Quality of Extracted Lanoline
/
–
Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика..
–
2008.
– Т. 3. – № 3.
– С.
48-53.
- DOI:
TRANSLIT
Vliyanie uslovij obrabotki shersti v srede sverhkriticheskogo dioksida ugleroda na vyhod i kachestvo ekstragiruemogo lanolina / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 48-53. - DOI:
En
Effect of Conditions of Wool Treatment in Supercritical Carbon Dioxide on Yield and Quality of Extracted Lanoline
.
Sverhkriticheskie Flyuidy: Teoriya i Praktika,
3,
48-53
(2008).
https://doi.org/
Key words: Supercritical Fluid Extraction, Accelerated Solvent Extraction, Oenothera biennis L., Evening Primrose, Gas Chromatography, Gas Cromatography-Mass- Spectrometry
For the first time the procedure for isolation of oil from Evening Primrose seeds using
carbon dioxide Supercritical Fluid Extraction has been proposed. The process parameters
as a function of pressure and temperature were studied. Qualitative and quantitative analysis
of oil has been performed. The proposed method permits to produce oil of high quality
without any traces of organic solvents which is ready for practical use excluding additional
processing. In addition, the method of Accelerated Solvent Extraction (isopropanol) was
used to utilize residual grist, which allows to isolate polar polyphenolic fraction.
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ГОСТ
7.0.100-2018
Development of Method for Components Isolation from Evening Primrose (Oenothera biennis L.) Seeds Using Modern Extraction Procedures / – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2008. – Т. 3. – № 3. – С. 54-70. - DOI:
TRANSLIT
Izvlechenie cennyh komponentov iz semyan oslinnika dvuletnego (Oenothera biennis L.) s ispol'zovaniem sovremennyh metodov ekstrakcii / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 54-70. - DOI:
En
Development of Method for Components Isolation from Evening Primrose (Oenothera biennis L.) Seeds Using Modern Extraction Procedures. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 3, 54-70 (2008). https://doi.org/
Key words: subcritical water, glycerrizinic acid, licorice root
A procedure for extraction of licorice root by subcritical water aimed at obtaining a
glycerrizinic acid based biologically active extract is developed. A high efficiency of
this procedure as compared with that of a traditional method in which an organic
solvent (acetone) is used as an extracting agent is demonstrated.
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ГОСТ
7.0.100-2018
Extraction of Glycerrizinic Acid from Licorice Root in Subcritical Water
/
–
Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика..
–
2008.
– Т. 3. – № 3.
– С.
71-74.
- DOI:
TRANSLIT
Ekstrakciya glicirrizinovoj kisloty iz kornya solodki v srede subkriticheskoj vody / – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2008. – Т. 3. – № 3. – S. 71-74. - DOI:
En
Extraction of Glycerrizinic Acid from Licorice Root in Subcritical Water
.
Sverhkriticheskie Flyuidy: Teoriya i Praktika,
3,
71-74
(2008).
https://doi.org/