Počet záznamů: 1
Solute-matrix and Solute-Solute Interactions during Supercritical Fluid Extraction of Sea Buckthorn Leaves
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SYSNO ASEP 0383280 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Solute-matrix and Solute-Solute Interactions during Supercritical Fluid Extraction of Sea Buckthorn Leaves Tvůrce(i) Sajfrtová, Marie (UCHP-M) RID, ORCID, SAI
Sovová, Helena (UCHP-M) RID, ORCID, SAIZdroj.dok. Procedia Engineering. - Amsterdam : Elsevier BV
Roč. 42, SI (2012), s. 1682-1691Poč.str. 10 s. Akce International Congress of Chemical and Process Engineering CHISA 2012 and 15th Conference PRES 2012 /20./ Datum konání 25.08.2012-29.08.2012 Místo konání Prague Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova supercritical fluid extraction ; sea buckthom leaves ; solute-solute interaction Vědní obor RIV CI - Průmyslová chemie a chemické inženýrství CEP TA01010578 GA TA ČR - Technologická agentura ČR Institucionální podpora UCHP-M - RVO:67985858 UT WOS 000392862500172 EID SCOPUS 84891702637 DOI 10.1016/j.proeng.2012.07.561 Anotace 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 Pracoviště Ústav chemických procesů Kontakt Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227 Rok sběru 2013
Počet záznamů: 1