Supercritical extraction of carotenoids and lipids from buriti ( Mauritia flexuosa), a fruit from the Amazon region

Supercritical extraction of carotenoids and lipids from buriti ( Mauritia flexuosa), a fruit from the Amazon region

Pulp of the buriti fruit ( Mauritia flexuosa, Mart.) was extracted with supercritical CO 2 to obtain oil fractions with a high concentration of vitamins, especially β-carotene. The raw material consisted of a mixture of pulp and peel that was scraped off the immature fruit. The extracted oil was ana...

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Bibliographic Details
Published in:The Journal of supercritical fluids Vol. 14; no. 3; pp. 247 - 256
Main Authors: Ferreira de França, Luiz, Reber, Georg, Meireles, M.Angela A, Machado, Nélio T, Brunner, Gerd
Format: Journal Article
Language:English
Published: Elsevier B.V 01-03-1999
Subjects:
Carotene
Extraction
Mauritia flexuosa
Natural products
Solubility
Supercritical fluids
Supercritical fluids
Extraction
Carotene
Mauritia flexuosa
Natural products
Solubility
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Summary:Pulp of the buriti fruit ( Mauritia flexuosa, Mart.) was extracted with supercritical CO 2 to obtain oil fractions with a high concentration of vitamins, especially β-carotene. The raw material consisted of a mixture of pulp and peel that was scraped off the immature fruit. The extracted oil was analyzed by gas chromatography and spectrophotometry, and results were compared with those obtained by extraction using hexane as solvent. The oil extracted with hexane showed a content of about 1% carotene. Extraction with supercritical CO 2 was capable of removing about 80% of the initial carotene content. Extraction experiments were carried out at pressures of 20 and 30 MPa and temperatures of 313 and 328 K. The extraction curves typically showed the three regions found in supercritical fluid extraction of natural products, i.e. beginning with a straight line characteristic of the constant rate extraction period, followed by the falling rate period, and ending with the diffusion rate period. Experimental data were correlated using the model proposed by Sovová. The model showed good agreement with experimental data. The mass transfer coefficients of the solid phase were obtained by adjusting the model equation. The solubility values calculated are within the range for common vegetable oils.
ISSN:0896-8446
1872-8162
DOI:10.1016/S0896-8446(98)00122-3