C - Chemistry – Metallurgy – 11 – B
Patent
C - Chemistry, Metallurgy
11
B
202/89, 260/499.
C11B 3/14 (2006.01) B01D 3/38 (2006.01)
Patent
CA 1285289
HIGH TEMPERATURE VACUUM STEAM DISTILLATION PROCESS TO PURIFY AND INCREASE THE FRYLIFE OF EDIBLE OILS Abstract of the Disclosure Deaerated oil having a level of less than about 0.10% by volume of dissolved oxygen is heated at a temperature between about 530°F (277°C) and about 650°F (343°C) and stripped with a stripping medium with a molar ratio of stripping medium to oil of between about 0.05 and about 9.7, at an absolute pressure of between about 0.5 mm Hg and about 50 mm Hg., for a time of between about 5 seconds and about 15 minutes. The combination of stripping parameters is selected so that the stripping factor "f" is greater than about 0.6, where f = KPvS/PO, where K is between about 1 and about 200, and where Pv (the vapor pressure of the component to be stripped) is not more than about 0.1 mm Hg at 500°F (277°C) and not more than about 2.0 mm Hg at 600°F(343°C). This vacuum steam stripping at very high temperatures for short residence times improves the frylife of the edible oil while minimizing undesirable thermally induced side reactions such as polymerization, trans-isomerization and hydrolysis.
524554
Braun James Louis
Scavone Timothy Alan
Ach Food Companies Inc.
Sim & Mcburney
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