Extrakce silice z řebříčku obecného superkritickým CO2.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F07%3A00081939" target="_blank" >RIV/67985858:_____/07:00081939 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Supercritical CO2 Extraction of Essential Oil from Yarrow.

Popis výsledku v původním jazyce

Essential oil was extracted from yarrow flowers (Achillea millefolium) with supercritical CO2 at pressure of 10 MPa and temperatures of 40-60 oC, and its composition and yield were compared with those of hydrodistillate. The yield of total extract, measured in dependence on extraction time, was affected by extraction temperature but not by particle size of ground flowers. CO2-extraction of cuticular waxes was lowest at 60 oC. Major essential oil components were camphor, 1,8-cineolenyl acetate,?, bor-terpinene, and terpinolene. Compared to hydrodistillation, the yield of monoterpenes was lower due to their incomplete separation from gaseous CO2 in trap but the yield of less volatile components like monoterpene acetates and sesquiterpenes was higher. Hydrolysis -terpinene and terpinolene, occuring in of?hydrodistillation, was suppressed in supercritical extraction, particularly at extraction temperature of 40 oC.

Název v anglickém jazyce

Supercritical CO2 Extraction of Essential Oil from Yarrow.

Popis výsledku anglicky

Essential oil was extracted from yarrow flowers (Achillea millefolium) with supercritical CO2 at pressure of 10 MPa and temperatures of 40-60 oC, and its composition and yield were compared with those of hydrodistillate. The yield of total extract, measured in dependence on extraction time, was affected by extraction temperature but not by particle size of ground flowers. CO2-extraction of cuticular waxes was lowest at 60 oC. Major essential oil components were camphor, 1,8-cineolenyl acetate,?, bor-terpinene, and terpinolene. Compared to hydrodistillation, the yield of monoterpenes was lower due to their incomplete separation from gaseous CO2 in trap but the yield of less volatile components like monoterpene acetates and sesquiterpenes was higher. Hydrolysis -terpinene and terpinolene, occuring in of?hydrodistillation, was suppressed in supercritical extraction, particularly at extraction temperature of 40 oC.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/KSK4040110" target="_blank" >KSK4040110: Teoretické základy chemických reakcí a procesů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Supercritical Fluids

ISSN

0896-8446

e-ISSN

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Svazek periodika

40

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

360-367

Kód UT WoS článku

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EID výsledku v databázi Scopus

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