The Fractional Extraction of Lipids and Cholesterol from Dried Egg Yolk Using Supercritical Carbon Dioxide

✍ Scribed by Sun, R. ;Sivik, B. ;Larsson, K.

• Publisher: John Wiley and Sons
• Year: 1995
• Weight: 567 KB
• Volume: 97
• Category: Article
• ISSN: 0931-5985
• DOI: 10.1002/lipi.19950970605

✦ Synopsis

Nach dieser Methode konnen ebenfalls die Restalkohol-Gehalte in Alkylsulfaten bestimmt werden.

Bei Ldsungsproblemen konnen gegebenenfalls Isopropanol oder Losemittelgemische von Me-thanolIWasser bzw. IsopropanolIWasser benutzt werden.

10. Analysenbericht

Das Ergebnis der Bestimmung ist unter Hinweis auf diese Methode anzugeben. Ferner sind alle Angaben zur Identifizierung der Probe sowie alle Chromatographie-Bedingungen und Operationen, die nicht in der Methode erwlhnt sind, im Protokoll aufzufiihren. Eingegangen am 7. MBrz 1995.

The Fractional Extraction of Lipids and Cholesterol from Dried Egg Yolk Using Supercritical Carbon Dioxide

R. S u n , B. S i v i k a n d K. L a r s s o n *

Results from extraction of cholesterol and other lipid components from dried egg yolk using supercritical carbon dioxide at the range of temperature from 40°C to 60°C and pressure between 150 bar und 350 bar for 2.5 hours and 2.7 kg C 0 2 consumption is described in this paper. The solubility of lipids and cholesterol increased with the increase of pressure at a constant temperature of 50'C. while at a constant pressure, more cholesterol was removed at 45'C than that at other temperatures. Nearly 60 percent cholesterol was removed at 45°C and 250 bar.

Lipids were more efficiently extracted at 60°C than at 40°C at 250 and 350 bar. however, a decrease in the total extracted lipids was observed with the increase in temperature at 150 bar. The removed total lipids from dried egg yolk at 250 barl55"C was over 80%.