|
KMID : 1007519950040040238
|
|
Food Science and Biotechnology
1995 Volume.4 No. 4 p.238 ~ p.243
|
|
|
Fractionation and Cholesterol Reduction of Beef Tallow by Suercritical CO2 Extraction
|
|
Kwon Young-An
Roy R Chao
|
|
|
Abstract
|
|
|
|
Beef tallow (BT) was extracted by single-pass supercritical CO₂at pressures from 138 to 345 bars and temperatures between 40 and 50℃, respectively. High pressure caused higher yield of fractionated BT with less CO₂used. A retrograde behavior was observed around 170-175 bar. BT was also extracted with varied pressure in the order of 138, 345 and 138 bars at 40℃ and collected at 34.5 bar/40℃. For 100 g of charged BT and 10-12 ㎏ of CO₂used, the BT residue had a yield of 22.5% with cholesterol concentration ([chol.]) of 49 ㎎/100 g of lipid representing a 70% reduction in cholesterol as referred to [chol.] of control BT. As BT was extracted at 345 bar/40℃ and fractionated into a series of three separators with respective pressure adjusted at 173 bar, 117 bar, and 34.5 bar at 40℃, a significant increase in [chol.] ranging from 272 to 433 ㎎/100 g lipid was found for the fractions obtained from the third separator.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|