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Solute-matrix and Solute-Solute Interactions during Supercritical Fluid Extraction of Sea Buckthorn Leaves
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SYSNO ASEP 0383280 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Solute-matrix and Solute-Solute Interactions during Supercritical Fluid Extraction of Sea Buckthorn Leaves Author(s) Sajfrtová, Marie (UCHP-M) RID, ORCID, SAI
Sovová, Helena (UCHP-M) RID, ORCID, SAISource Title Procedia Engineering. - Amsterdam : Elsevier BV
Roč. 42, SI (2012), s. 1682-1691Number of pages 10 s. Action International Congress of Chemical and Process Engineering CHISA 2012 and 15th Conference PRES 2012 /20./ Event date 25.08.2012-29.08.2012 VEvent location Prague Country CZ - Czech Republic Event type WRD Language eng - English Country NL - Netherlands Keywords supercritical fluid extraction ; sea buckthom leaves ; solute-solute interaction Subject RIV CI - Industrial Chemistry, Chemical Engineering R&D Projects TA01010578 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Institutional support UCHP-M - RVO:67985858 UT WOS 000392862500172 EID SCOPUS 84891702637 DOI 10.1016/j.proeng.2012.07.561 Annotation In this work, the SFE was applied to extract selected medicinal substances from sea buckthorn (Hippophae rhamnoides L.) leaves at different conditions (pressure 20-28 MPa, temperature 40-60 °C and ethanol concentration in CO2 0-6.9 wt. %) influencing solvent power of CO2. Interest was focused on the leaf oleoresin (total extract) and its minor components (fat soluble vitamins and carotenoids). The yield of polar component was still steadily increasing at the moment when the extraction is almost finished as non-polar components are exhausted and the increase in total extract is very low. Out of the operation variables, the ethanol concentration in CO2 showed the strongest effect on the extraction. The final yields of polar components were increasing with rising ethanol concentration in CO2. The extraction of non-polar components (vitamins and β-carotene) and polar lutein was synchronised with oleoresin, whereas the extraction of non-polar lycopene, a component strongly affected by entrainer, was not influenced by the extraction of oleoresin. The solute-solute interactions were expressed either as a delay of the initial extraction period for some poorly soluble components against the more soluble ones or, on the contrary, as a synchronous extraction of the components similar in structure Workplace Institute of Chemical Process Fundamentals Contact Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Year of Publishing 2013
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