Extraction of Thyme Oil: Comparison between Hydrodistillation and Supercritical CO2 Extraction.

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Extraction of Thyme Oil: Comparison between Hydrodistillation and Supercritical CO2 Extraction.

Popis výsledku v původním jazyce

Supercritical fluid extraction (SFE) with carbon dioxide and hydrodistillation (HD) were compared as methods to isolate essential oil from thyme herb (Thymus serpyllum, L.). The SFE extraction was performed in a semibatch apparatus and the rate of extraction was found dependent on the extraction pressure and temperature and on the amount of carbon dioxide passed through the extractor. The most suitable conditions for the extraction were 11 MPa and 50 C. The compounds extracted by both SFE and HD were identified by gas chromatography and gas chromatography-mass spectrometry. The difference in the aroma of the products was noticeable. Predominance of aromatic alcohols carvacrol and thymol and their biosynthetic precursors p-cymene and gama-terpinene wasrevealed in both SFE extracts and HD oil. The SFE extracts also contained water and cuticular waxes; longer extraction times and higher pressures resulted in a higher percentage of water and waxes in the extract.

Název v anglickém jazyce

Extraction of Thyme Oil: Comparison between Hydrodistillation and Supercritical CO2 Extraction.

Popis výsledku anglicky

Supercritical fluid extraction (SFE) with carbon dioxide and hydrodistillation (HD) were compared as methods to isolate essential oil from thyme herb (Thymus serpyllum, L.). The SFE extraction was performed in a semibatch apparatus and the rate of extraction was found dependent on the extraction pressure and temperature and on the amount of carbon dioxide passed through the extractor. The most suitable conditions for the extraction were 11 MPa and 50 C. The compounds extracted by both SFE and HD were identified by gas chromatography and gas chromatography-mass spectrometry. The difference in the aroma of the products was noticeable. Predominance of aromatic alcohols carvacrol and thymol and their biosynthetic precursors p-cymene and gama-terpinene wasrevealed in both SFE extracts and HD oil. The SFE extracts also contained water and cuticular waxes; longer extraction times and higher pressures resulted in a higher percentage of water and waxes in the extract.

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

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2001

Kód důvěrnosti údajů

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

Název periodika

Acta Pharmaceutica

ISSN

1330-0075

e-ISSN

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Svazek periodika

51

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

HR - Chorvatská republika

Počet stran výsledku

6

Strana od-do

305-310

Kód UT WoS článku

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EID výsledku v databázi Scopus

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