Results 231 to 240 of about 785,332 (278)

Supercritical CO2 fractionation of jasmine concrete

The Journal of Supercritical Fluids, 1995
Abstract Jasmine fragrance is usually produced by hexane extraction. The extraction product called a “concrete,” undergoes further processing to separate fragrance compounds from undesired coextractives such as paraffins and fatty acid methyl esters. This study reports supercritical CO 2 fractionation of jasmine concrete to avoid thermal degradation
REVERCHON, Ernesto, DELLA PORTA, Giovanna, Gorgoglione D.   +2 more
openaire   +2 more sources

Use of supercritical CO2 for bone delipidation

Biomaterials, 1994
Supercritical carbon dioxide was used for bone delipidation. It appeared that this technology is very efficient since supercritical CO2 is able to diffuse into microporous solids much better than liquids and that it has a good solvent capacity for lipids.
J, Fages, A, Marty, C, Delga, J S, Condoret, D, Combes, P, Frayssinet   +5 more
openaire   +2 more sources

Extractive fermentation of aroma with supercritical CO2

Biotechnology and Bioengineering, 1999
This work deals with the feasibility of achieving an extractive fermentation of 2-phenylethyl alcohol, the rose aroma, coupling fermentation with Kluyveromyces marxianus and supercritical carbon dioxide (SCCO2) extraction. The extractive process is, in this case, of special interest due to the strong yeast inhibition by 2-phenylethyl alcohol.
, Fabre, , Condoret, , Marty
openaire   +2 more sources

Interfacial Photoreduction of Supercritical CO2 by an Aqueous Catalyst† [PDF]

Angewandte Chemie - International Edition, 2011
Not just a solvent anymore: CO2 reduction under supercritical conditions was achieved in a biphasic water–supercritical CO2 system using an aqueous soluble catalyst (see picture).
Hubert Girault, Manuel A Méndez
exaly   +4 more sources

Rose concrete fractionation by supercritical CO2

The Journal of Supercritical Fluids, 1996
Abstract Supercritical CO2 extraction was used to post-process a solid rose extract produced by liquid solvent extraction. Single step supercritical extraction at 80 bar, 40 °C, and a two-stage separation procedure at 80 bar and −16 °C and at 15 bar and 0 °C, were the optimum process conditions to produce a volatile rose oil with an overall 2-phenyl ...
REVERCHON, Ernesto, DELLA PORTA, Giovanna   +1 more
openaire   +2 more sources

Polymorph Control of Sulfathiazole in Supercritical CO2

Pharmaceutical Research, 2001
Sulfathiazole was used to investigate polymorph control in liquid and supercritical CO2. Conventional techniques require a variety of solvents and techniques to produce different polymorphs. The present approach involves precipitation from an organic solution with liquid or supercritical CO2 using the SEDS process.Sulfathiazole was precipitated from ...
York, Peter, Kordikowski, Andreas, Shekunov, T.   +2 more
openaire   +3 more sources

Effect of Supercritical CO2 on PVDF

Volume 6B: Pipeline and Riser Technology, 2014
The pre-salt fields have a high content of carbon dioxide (CO2) that can be in the supercritical state due to reservoir conditions of temperature and pressure. This high concentration of carbon dioxide has a direct impact on the strategies used in the exploration and exploitation of the reservoir, including the selection of materials and equipment used
Daniele A. Laurentino, Marlon D. C. Silva, Celio A. Costa, Fernando L. P. Pessoa, Marysilvia F. Costa   +4 more
openaire   +1 more source

Progress in Supercritical CO2 Dyeing

Journal of Industrial Textiles, 2001
Supercritical fluids have special properties that could lead to substantial improvements when utilized as replacements for water in wet processing of textiles. These fluids have densities and solvating powers similar to liquid solvents combined with viscosity values and diffusion coefficients like those observed for gases.
openaire   +1 more source

Use of supercritical CO2 in food industry

2014
Supercritical fluid extraction (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids (SCF) the extracting solvent. Carbon dioxide is the most commonly used supercritical fluid in food industry, especially being used for decaffeination.
İNCEDAYI, BİGE, ÇOPUR, ÖMER UTKU, SUNA, SENEM   +2 more
openaire   +2 more sources

Pulverisation of Emulsions with Supercritical CO2

2016
With the use of a carbon dioxide-assisted high pressure spraying process, it is possible to manufacture solid emulsions with or without the employment of surfactants. Depending on the process parameters, such as spray pressure, temperature, and gas-to-liquid ratio, various powder morphologies and sizes in the range of micrometers can be obtained.
Pavlinka Ilieva, Andreas Kilzer, Eckhard Weidner   +2 more
openaire   +1 more source