Supercritical fluid extraction of hernandulcin from Lippia dulcis Trev.
Identifieur interne : 000809 ( Main/Exploration ); précédent : 000808; suivant : 000810Supercritical fluid extraction of hernandulcin from Lippia dulcis Trev.
Auteurs : Patricia Francisco De Oliveira [Brésil] ; Ricardo Antonio Francisco Machado [Brésil] ; Ariovaldo Bolzan [Brésil] ; Danièle Barth [France]Source :
- Journal of Supercritical Fluids [ 0896-8446 ] ; 2012.
Abstract
This paper presents the results of the supercritical fluid extraction (SFE) of Lippia dulcis, which has not yet been researched for this plant matrix. The SFE experiments were performed in a laboratory-scale pilot unit. Hydrodistillation was adopted as a method for comparison. Chromatographic analyses (GCMS, LCMS and HPLC) were performed to evaluate the composition of the extracts, indicating the presence of hernandulcin, a sesquiterpene of sweet flavor, and also of other compounds. The results indicated higher total extract yields in the SFE process (from 1.7 to 3.4%), for all parameters tested, in comparison to hydrodistillation (0.6%). The conditions of 14 MPa and 40 degrees C promoted the highest yield in the SFE process, but due to qualitative aspects of the extracts 12 MPa and 35 degrees C were selected as the most appropriate conditions for the SFE of L. dulcis. Qualitative GCMS results for the SFE extracts and hydrodistilled essential oil showed good agreement with the literature. The percentage of hernandulcin in the extracts obtained by supercritical fluid extraction (12 MPa/35 degrees C, 2.6 +/- 0.1% total yield) was 41.9 +/- 0.01% (mass of hernandulcin relative to the initial mass of extract in the sample)
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DOI: 10.1016/j.supflu.2011.12.003
Affiliations:
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The SFE experiments were performed in a laboratory-scale pilot unit. Hydrodistillation was adopted as a method for comparison. Chromatographic analyses (GCMS, LCMS and HPLC) were performed to evaluate the composition of the extracts, indicating the presence of hernandulcin, a sesquiterpene of sweet flavor, and also of other compounds. The results indicated higher total extract yields in the SFE process (from 1.7 to 3.4%), for all parameters tested, in comparison to hydrodistillation (0.6%). The conditions of 14 MPa and 40 degrees C promoted the highest yield in the SFE process, but due to qualitative aspects of the extracts 12 MPa and 35 degrees C were selected as the most appropriate conditions for the SFE of L. dulcis. Qualitative GCMS results for the SFE extracts and hydrodistilled essential oil showed good agreement with the literature. The percentage of hernandulcin in the extracts obtained by supercritical fluid extraction (12 MPa/35 degrees C, 2.6 +/- 0.1% total yield) was 41.9 +/- 0.01% (mass of hernandulcin relative to the initial mass of extract in the sample)</div></front></TEI><affiliations><list><country><li>Brésil</li><li>France</li></country><region><li>Grand Est</li><li>Lorraine (région)</li></region><settlement><li>Metz</li><li>Nancy</li></settlement><orgName><li>Université de Lorraine</li></orgName></list><tree><country name="Brésil"><noRegion><name sortKey="De Oliveira, Patricia Francisco" sort="De Oliveira, Patricia Francisco" uniqKey="De Oliveira P" first="Patricia Francisco" last="De Oliveira">Patricia Francisco De Oliveira</name></noRegion><name sortKey="Bolzan, Ariovaldo" sort="Bolzan, Ariovaldo" uniqKey="Bolzan A" first="Ariovaldo" last="Bolzan">Ariovaldo Bolzan</name><name sortKey="Francisco Machado, Ricardo Antonio" sort="Francisco Machado, Ricardo Antonio" uniqKey="Francisco Machado R" first="Ricardo Antonio" last="Francisco Machado">Ricardo Antonio Francisco Machado</name></country><country name="France"><region name="Grand Est"><name sortKey="Barth, Daniele" sort="Barth, Daniele" uniqKey="Barth D" first="Danièle" last="Barth">Danièle Barth</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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