Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/26079
Type: Artigo de periódico
Title: Supercritical extraction of pupunha (Guilielma speciosa) oil in a fixed bed using carbon dioxide
Author: Araújo, M.E.
Machado, N.T.
França, L.F.
Meireles, M.A.A.
Abstract: The pupunha (Guilielma speciosa) is the fruit of a palm tree typical of the Brazilian Northern region, whose stem is used as a source of heart of palm. The fruit, which is about 65% pulp, is a source of oil and carotenes. In the present work, an analysis of the kinetics of supercritical extraction of oil from the pupunha pulp is presented. Carbon dioxide was used as solvent. The extractions were carried out at 25 MPa and 323 K and 30 MPa and 318 K. The chemical composition of the extracts in terms of fatty acids was determined by gas chromatography. The amount of oleic acid, a saturated fatty acid, in the CO2 extracts was larger than that in the extract obtained with hexane. The overall extraction curves were modeled using the single-parameter model proposed in the literature to describe the desorption of toluene from activated coal.
Subject: Supercritical extraction
Guilielma speciosa
pupunha
lipids
carotenes
extraction
extraction curve modeling
Editor: Brazilian Society of Chemical Engineering
Rights: aberto
Identifier DOI: 10.1590/S0104-66322000000300005
Address: http://dx.doi.org/10.1590/S0104-66322000000300005
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322000000300005
Date Issue: 1-Sep-2000
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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