Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/5105
Título: Extraction of volatile oil from aromatic plants with supercritical carbon dioxide: experiments and modeling
Autor: Coelho, José Augusto Paixão
Cristino, Ana F.
Matos, Patrícia G.
Rauter, Amélia P.
Nobre, Beatriz P.
Mendes, Rui L.
Barroso, João G.
Mainar, Ana
Urieta, José S.
Fareleira, João M. N. A.
Sovova, Helena
Palavra, António F.
Palavras-chave: Essential oils
Volatile oils
Supercritical fluids
Modeling
Extraction
Data: Set-2012
Editora: MDPI AG, Postfach
Citação: COELHO, J. P.; [et al] – Extraction of volatile oil from aromatic plants with supercritical carbon dioxide: experiments and modeling. Molecules. ISSN: 1420-3049. Vol. 17, nr. 9 (2012)
Resumo: An overview of the studies carried out in our laboratories on supercritical fluid extraction (SFE) of volatile oils from seven aromatic plants: pennyroyal (Mentha pulegium L.), fennel seeds (Foeniculum vulgare Mill.), coriander (Coriandrum sativum L.), savory (Satureja fruticosa Beguinot), winter savory (Satureja montana L.), cotton lavender (Santolina chamaecyparisus) and thyme (Thymus vulgaris), is presented. A flow apparatus with a 1 L extractor and two 0.27 L separators was built to perform studies at temperatures ranging from 298 to 353 K and pressures up to 30.0 MPa. The best compromise between yield and composition compared with hydrodistillation (HD) was achieved selecting the optimum experimental conditions of extraction and fractionation. The major differences between HD and SFE oils is the presence of a small percentage of cuticular waxes and the relative amount of thymoquinone, an oxygenated monoterpene with important biological properties, which is present in the oils from thyme and winter savory. On the other hand, the modeling of our data on supercritical extraction of volatile oil from pennyroyal is discussed using Sovova's models. These models have been applied successfully to the other volatile oil extractions. Furthermore, other experimental studies involving supercritical CO2 carried out in our laboratories are also mentioned.
Peer review: yes
URI: http://hdl.handle.net/10400.21/5105
DOI: 10.3390/molecules170910550
ISSN: 1420-3049
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos



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