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Extraction of macauba kernel oil using supercritical carbon dioxide and compressed propane
Author(s) -
Trentini Caroline Portilho,
Cuco Roberta Pazinato,
CardozoFilho Lucio,
Silva Camila da
Publication year - 2019
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.23236
Subject(s) - propane , supercritical fluid , supercritical fluid extraction , yield (engineering) , extraction (chemistry) , chemistry , lauric acid , solvent , supercritical carbon dioxide , raffinate , chromatography , materials science , organic chemistry , fatty acid , metallurgy
Macauba kernel oil (MKO) was extracted using supercritical CO 2 and compressed propane as the solvent. The influence of temperature (313–353 K for CO 2 and 303–333 K for propane) and pressure (18–22 MPa for CO 2 and 8–12 MPa for propane) on oil yield was investigated, and the results were compared with conventional extraction. A characterization of oil and defatted meal was performed. Temperature and pressure, in the evaluated range, influenced oil yield with the use of CO 2 . For propane, the oil yield was not influenced by the experimental conditions. In the evaluated experimental range, the use of propane and CO 2 provided 100 % and ∼93 % oil yield compared to conventional extraction, respectively. MKO showed a predominance of saturated fatty acids, among which lauric acid was the major constituent. CO 2 presented greater efficiency in the removal of phytosteroids and tocopherols from the macauba kernel, however, the oil extracted with propane presented longer oxidative stability. Defatted meals presented modified physico‐chemical composition and potentiated technological characteristics due to oil removal.