English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/19822
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 12 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Effect of the carbon dioxide modifier on the lipid composition of wool wax extracted from raw wool

AutorDomínguez Fernández, Carmen; Jover Comas, Eric; Bayona Termens, Josep María; Erra Serrabasa, Pilar
Palabras claveWool wax extraction
Lanolin
Raw wool
CO2/modifier
TLC/FID
GS–MS
Subcritical CO2
Fecha de publicación3-feb-2003
EditorElsevier
CitaciónAnalytica Chimica Acta 477(2): 233-242 (2003)
ResumenWool wax or lanolin is a unique substance secreted by sheep and forms a natural protective coating on wool fibres. It is widely used in pharmaceutical and cosmetic formulations. However, different systems of wool wax recovery from scouring liquour provide a dark impurified greasy product. This product has a lipid composition that differs from the wool wax present on wool fibres. The wool wax extraction method from raw wool with pressurised CO2 and different modifiers at constant pressure and temperature was studied. Thin-layer chromatography coupled to an automated flame ionisation detection system (TLC/FID) was used to analyse the different lipid classes present in the collected extracts. Moreover, a detailed structural comparison of the cholesteryl esters and hydroxycholesteryl esters was carried out by means of sub-ambient pressure chromatography mass spectrometry in the electron impact and in the ammonia positive chemical ionisation modes. For comparison, qualitative and quantitative analyses of the lanolin extracted in Soxhlet with dichloromethane and commercial cosmetic lanolin were carried out. Differences in the quantity of wool wax extraction and in the lipid composition of different wool wax extracts were detected by changing the modifier polarity.
Descripción10 pages, 5 figures, 3 tables.-- Available online Dec 5, 2002.
Versión del editorhttp://dx.doi.org/10.1016/S0003-2670(02)01418-6
URIhttp://hdl.handle.net/10261/19822
DOI10.1016/S0003-2670(02)01418-6
ISSN0003-2670 (Print)
1873-4324 (Online)
Aparece en las colecciones: (IDAEA) Artículos
Ficheros en este ítem:
No hay ficheros asociados a este ítem.
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.