The challenge of finding scale-up criteria that allow reproducing laboratory data at higher scales is extremely important for the industrial supercritical fluid extraction (SFE) processes. The objective of this work is to investigate the scaleup of SFE from Capsicum frutescens pepper using supercritical CO2, and to evaluate the extraction kinetic curves of oleoresin and capsaicinoids of the lar...

Extraction yields and fatty acid profiles from freeze-dried Chlorella vulgaris by microwave pretreatment followed by supercritical carbon dioxide (MW-SCCO(2)) extraction were compared with those obtained by supercritical carbon dioxide extraction alone (SCCO(2)). Work performed with pressure range of 20-28 Mpa and temperature interval of 40-70 °C, gave the highest extraction yield (w/w dry weig...

Soil was treated with "C-ring-labeled fluometuron [N,N-dimethyl-N'[3-(trifluoromethyl)phenyll urea] (0.516 and 5.16 pmol gl), air-dried, and stored for 6 months at 5 "C. The 14C was then extracted from soil with methanol by conventional extraction (twice with MeOH/H20 8020 v/v; 2:l extract/soil v/w) and with CO2 using a supercritical fluid extractor. Supercritical fluid extraction (SFE) method ...

An overview of the studies carried out in our laboratories on supercritical fluid extraction (SFE) of volatile oils from seven aromatic plants: pennyroyal (Mentha pulegium L.), fennel seeds (Foeniculum vulgare Mill.), coriander (Coriandrum sativum L.), savory (Satureja fruticosa Béguinot), winter savory (Satureja montana L.), cotton lavender (Santolina chamaecyparisus) and thyme (Thymus vulgari...

CO2 injected in the reservoir of McElroy Field, TX, for a CO2 ̄ood was in the supercritical state. Supercritical CO2 ̄uid is capable of extracting light and intermediate hydrocarbons from rocks but is unable to extract heavy hydrocarbons and asphaltics. Therefore, plugging of asphaltics in reservoir rocks and a consequent reduction in injectivity and recovery may result when CO2 only is used in ...

Amaranth seeds contain oil with important nutritional properties, in particular, because of the presence essential fatty acids, high content minerals, vitamins, lysine and squalene. In this study, kinetics supercritical fluid extraction from three amaranth seed varieties has been investigated. The average was 58.2 g/kg, ranging 54.6 to 61.1 g/kg depends on varieties, while squalene ranged 3.3 3...

Supercritical fluid technologies (SCFT) represent a recent approach for obtaining pharmaceutical materials in pure physical form and the application of supercritical fluids is a superior alternative to conventional precipitation and extraction processes. Supercritical fluid technology (SCFT) offers exciting opportunities to produce and modify pharmaceutical substances and has the potential to r...

The antimalarial artemisinin, the active principle of the plant Artemisia annua L., was extracted by Supercritical Fluid Extraction (SFE). Soxhlet extraction was studied as comparison processes. The extracts were analyzed by the indirect method GC-FID. The maximal extraction yield (1.82%DW) was obtained by SFE at T=40°C, P=200bar, CO2flow=4.5g/min, and 20% ethanol as modifier. The artemisinin e...

Chinese quince seed (CQS) is an underutilized oil source and a potential source of unsaturated fatty acids and α-tocopherol-rich oil. Subcritical fluid (SCF) extraction is executed at lower pressures and temperatures than the pressures and temperatures used in supercritical fluid extraction. However, no studies on the SCF extraction of CQS oil are reported. Therefore, the objective of this stud...

Grape seed oil is a product resulting from the processing of grape marc. It is ever more appealing for the cosmetic and pharmaceutical industries: the pharmaceutical activities concern its antioxidant properties, due to the large content of unsaturated fatty acids. Grape seed oil could be extracted mechanically by pressing or chemically by means of solvents. Among the latter, supercritical CO2 ...