Short-path distillation of palm olein and characterization of products

2009 ◽  
Vol 111 (2) ◽  
pp. 142-147 ◽  
Author(s):  
Siew Wai Lin ◽  
Cheah Kien Yoo
2003 ◽  
Vol 86 (3) ◽  
pp. 735-745 ◽  
Author(s):  
R.J. Campos ◽  
J.W. Litwinenko ◽  
A.G. Marangoni

1988 ◽  
Vol 55 (3) ◽  
pp. 361-371 ◽  
Author(s):  
Joseph Arul ◽  
Armand Boudreau ◽  
Joseph Makhlouf ◽  
Rene Tardif ◽  
Benoit Grenier

SummaryMilk fat was fractionated into liquid (m.p. ⋍ 12 °C), intermediate (m.p. ⋍ 21 °C) and solid (m.p. ⋍ 39 °C) fractions by three different processes—melt crystallization, short-path distillation and supercritical CO2 extraction—and the cholesterol content of these fractions determined. Cholesterol was enriched in the liquid fractions from all three processes, in particular about 80% of the cholesterol being found in the liquid fraction obtained by short-path distillation. The basis of migration of cholesterol into various milk fat fractions was explained by its affinity to various triglycerides (melt crystallization) and by vapour pressure and molecular weight (short-path distillation). It was more complex in the supercritical CO2 extraction process; the interplay of cholesterol affinity toward CO2 and its molar volume, and its vapour pressure enhancement under applied pressure play a role.


1944 ◽  
Vol 34 (1) ◽  
pp. 51-106 ◽  
Author(s):  
K. C. D. Hickman

2004 ◽  
Vol 81 (10) ◽  
pp. 979-987 ◽  
Author(s):  
Tiankui Yang ◽  
Hong Zhang ◽  
Huiling Mu ◽  
Andrew J. Sinclair ◽  
Xuebing Xu

1951 ◽  
Vol 24 (2) ◽  
pp. 266-269
Author(s):  
David Craig ◽  
A. E. Juve ◽  
W. L. Davidson

Abstract During the course of this study we have found short-path distillation to be an especially useful procedure for separating volatile substances from macromolecular weight materials. For this reason and because the still which we have used most frequently has some rather novel features, it seems appropriate to devote the third paper of the series to a general description of our technique. Figure 1 is a schematic drawing of the still. Tube A is the heater tube, to the outside of which the samples in sheeted out form are attached by means of copper wire. The heater tube contains about 30 cc. of a liquid whose boiling point is the temperature at which the distillation is to be conducted. The liquid is boiled by an internal heating element regulated by means of a variable transformer. The leads H to the heating element enter through a rubber stopper in the upper end of the heater tube which is open to the atmosphere through flask G. For low-boiling heater liquids such as methanol, a condenser must be attached to the upper end of the heater tube. For the work described in the present series of papers, Cellosolve, b.p. 133° C, was used as the heater liquid. Tube B of Figure 1 is the condenser tube. Ordinarily, air cooling is sufficient to condense such materials as the usual rubber antioxidants, softeners, accelerators, fat acids, sulfur, etc. For special purposes, tube B is cooled by wrapping it with rubber tubing through which tap water was circulated or it is cooled with dry ice. The gap of this still, i.e., the distance from the heater tube to the condenser tube, is about 2 cm. The U-tube C, made of 1.25-inch glass tubing, constitutes a trap. It usually has been cooled with dry ice and acetone in I. That U-tube is connected to a booster pump D through a second dry-Ice trap. The pressure usually used has been less than 0.01 mm. and has been measured by a McCleod gage attached to E below the dry ice trap F. Where higher pressures have been used, the vacuum source has usually not included the booster pump.


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