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Item type:Publication, Access status: with files , Extraction and Fractionation of Natural Organic Compounds from Plant Materials with Supercritical Carbon Dioxide(2007); The aim of the present work was the measurement and modeling of multicomponent mixtures under supercritical conditions. The extraction and fractionation of natural organic components from rice bran and mandarin peel oils using supercritical carbon dioxide as solvent were investigated. Solid extractions and countercurrent experiments were performed from 7.5 to 40 MPa and from 35 to 70 °C. The results obtained have shown that supercritical technology can be chosen as an alternative process for the selective fractionation of high purity components from plant materials.Publicationtype: Doctoral Thesis664 1592 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Gegenstromtrennung von schwerflüchtigen Naturstoffen mit überkritischen komprimierten Gasen unter Verwendung von Schleppmitteln(2000); The investigations deal with the enrichment of tocochromanoles (vitamin E) and beta-carotene (provitamin A) from crude palm oil. In a first separation step the tocochromanoles and free fatty acids are removed using countercurrent supercritical fluid extraction (SFE) with supercritical CO2. The refined oil is esterified and then fractionated in fatty acid methyl esters (FAME, bio diesel) and a mixture of countercurrent beta-carotene and FAME using SFE.Publicationtype: Doctoral Thesis1017 1008