Results 241 to 250 of about 104,516 (286)
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Supercritical CO2 fractionation of jasmine concrete
The Journal of Supercritical Fluids, 1995Abstract 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 +2 more
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Rose concrete fractionation by supercritical CO2
The Journal of Supercritical Fluids, 1996Abstract 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 +1 more
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Fractional CO2 Laser Resurfacing
Facial Plastic Surgery Clinics of North America, 2011Fractionated CO(2) lasers are a new treatment modality for skin resurfacing. These lasers have been shown efficacious in treating facial photoaging changes and scars. These lasers have an improved safety and recovery profile compared with traditional CO(2) laser resurfacing. Precise treatment parameters vary between patients, the pathology treated, and
Paul J, Carniol +2 more
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Gas fractionation and CO2-dynamics in natural high-CO2-systems
2021The Okinawa Trough is a natural hydrothermal gas emission field. The flux of CO2 into the water column is dominated by hot hydrothermal CO2-rich vents. The influence of the emitted low-temperatured gas bubbles and droplets (‘condensed phase’) is very likely restricted to the lowermost part of the water column.
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Mathematical modelling of supercritical CO2 fractionation of flower concretes
Chemical Engineering Science, 1996Abstract A new process to obtain volatile oils by fractionation of flower concretes by supercritical fluid extraction was successfully tested for rose and tuberose. Chemical analysis indicated that the quality of the product obtained by means of this technique is superior to that of the corresponding product obtained by the traditional techniques ...
REVERCHON, Ernesto, POLETTO, Massimo
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Fractionation of fish oils using supercritical CO2 and CO2+ethanol mixtures
The Journal of Supercritical Fluids, 2000Abstract This work reports the countercurrent extraction and fractionation of a range of crude fish oils using supercritical carbon dioxide and carbon dioxide+ethanol mixtures. Vitamin A palmitate was extracted from model Cod liver oil/vitamin mixtures using pure CO2. The separation factor was low, due to similar solubilities of the vitamin ester and
O.J Catchpole, J.B Grey, K.A Noermark
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Fractional CO2 Laser Skin Resurfacing
2016Within the last couple of decades, we have witnessed a growing interest in self-improvement and healthier lifestyles. While society’s demand for plastic surgery is at an all-time high, nonsurgical rejuvenation procedures (e.g., botulinum toxin and laser skin rejuvenation) have eclipsed surgery in terms of absolute numbers over the last decade.
Fadl Chahine, Salim C. Saba
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Supercritical CO2 fractionation of crude palm oil
The Journal of Supercritical Fluids, 2001Abstract Crude palm oil was fractionated using supercritical CO2 (SC–CO2) in a semi batch apparatus. The fractionation conditions studied were at 40, 50 and 60°C and at 110, 140 and 200 bars, respectively. System pressure was found to be more significant rather than temperature for increasing the solubility of palm oil triglycerides in SC–CO2.
Masturah Markom +2 more
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Fractionation of glycerol acetates with supercritical CO2
The Journal of Supercritical Fluids, 2019Abstract Glycerol acetates are sustainable products that exhibit several industrial applications. These compounds are traditionally synthesized by the esterification of glycerol with acetic acid, and their fractionation is key to isolate high value-added products.
Fortunatti Montoya, Mariana +3 more
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Fractionated CO2 Laser as Therapy in Recalcitrant Lichen Sclerosus
Journal of Lower Genital Tract Disease, 2020Objectives The aim of this study was to evaluate the efficacy of the fractionated CO2 laser in treating recalcitrant lichen sclerosus (LS). Materials and Methods The study population was 40 women diagnosed with LS who were symptomatic despite medical treatment. Patients had at least
Divya, Balchander, Paul, Nyirjesy
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