[섬유] Ceramides Extracted from Wool: Supercritical Extraction Processes 출판일 : 2009.05.01 저자 : Raquel Ramírez Mileo, Meritxell Martí Gelabert, Iratxe Garay Peral, Albert Maria Manich Bou, Jose Luis Parra Juez, Luisa Coderch Negra 서지사항 : Textile Research Journal, Volume 79, Issue 8, 721페이지 등록일 : 2011.07.20 I 조회수 : 78 작성자 : admin |
Ceramides play a major role in structuring and maintaining the water permeability barrier
function of the skin, and are widely used in different products for skin care and treatment.
This work focused on the isolation of internal wool lipid extracts, enriched in ceramides by
supercritical fluid extraction with carbon dioxide (CO2), in an attempt to minimize the
environmental impact of the organic solvent extraction process. Selected extraction
variables were optimized at two laboratory scales. The lipid composition of the different
collected extracts was quantitatively analyzed by thin layer chromatography coupled to an
automated flame ionization detector. The extracted wool was physically and chemically
evaluated to determine its feasibility for textile purposes. Larger amounts of ceramides were
obtained when 10.0 % methanol or ethanol was used as a modifier. Experimental data
indicated that a temperature of 60°C resulted in a large yield of ceramides when low
pressure (160 atm) and high CO2 volumes (5—7 cell volumes) were applied. Moreover, the
temperature and the percentage of the modifier could be reduced to 40°C and to 5.0 % when
methanol was used as a modifier, yielding slightly smaller amounts of ceramides. Although
slight modifications were observed in some properties of the fibers because of the different
extraction conditions, these differences were insignificant.
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