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Extraction Behavior of Lipids Obtained from Spent Coffee Grounds Using Supercritical Carbon Dioxide
Author(s) -
Akgün Nalan A.,
Bulut Hakan,
Kikic Ireneo,
Solinas Dario
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201400237
Subject(s) - supercritical carbon dioxide , carbon dioxide , extraction (chemistry) , supercritical fluid , supercritical fluid extraction , chemistry , chromatography , chemical engineering , materials science , organic chemistry , engineering
Supercritical carbon dioxide (sc‐CO 2 ) extraction was applied to extract lipids from spent coffee grounds. The effects of different process conditions on the extraction yield and composition of the extracts were investigated by response surface methodology. A comparison of the experimental results with those obtained by conventional solvent extraction was also performed. In all these samples, the main fatty acids were rich in palmitic and linoleic acids. Moreover, a new method was developed and validated for the gas chromatographic analysis of sterols and tocopherols. The results demonstrate that sc‐CO 2 extraction is principally a potential candidate method for the extraction of lipids and high value‐added compounds from residues/by‐products.