Supercritical extraction of pupunha (Guilielma speciosa) oil in a fixed bed using carbon dioxide

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

Use of ultrafiltration and supercritical fluid extraction to obtain a whey buttermilk powder enriched in milk fat globule membrane phospholipids

“…Supercritical fluid extraction (SFE) has been utilized to extract lipids from foods, such as nuts and spices (Araújo, Machado, França, & Meireles, 2000;Coelho, Oliveira, & Pinto, 1997;Lameira, Coelho, & Mothé, 1997;Nobrega, Monteiro, Meireles, & Marques, 1997;Silva, Mendes, Pessoa, & Queiroz, 2008). More recently, some research groups have successfully used this technology on dairy products.…”

Modelagem Matemática Das Cinéticas De Extração Supercrítica De Produtos Naturais

“…Curvas globais de extração: As curvas globais de extração do maracujá foram obtidas por Corrêa (1994) e da pupunha por Araújo et. al.…”

Supercritical technology in Brazil: system investigated (1994–2003)

“…The sources of the reference data classified as discussed above were: analytical methods [6-9,34-38, ; extraction [2,[4][5][10][11]18,19,21,22,[24][25][26][27][28][29][31][32][33][39][40][41]45,50,52,53,55,[57][58][59]61,62,66,; thermodynamics and fundamental studies [3,[12][13][14][15][16][17]20,23,30,[42][43][44][46][47][48][49]51,54,56,60,[63][64][166][167][168]…”