Title: Extraction of fat from starch-containing vegetable matter

Abstract: Fat is removed from starch-containing vegetable material such as cereal grains, potatoes or tapioca by a process involving crushing the vegetable material, contacting the crushed material with a normally gaseous inert solvent under supercritical condition at a temperature of about 20.degree. to 100.degree.C and a pressure of about 30 to 1000 atmospheres to dissolve fat from the vegetable material into the solvent, separating the fat-containing solvent from the resultant substantially fat-free vegetable residue, and separating the dissolved fat from the solvent by raising the temperature and/or lowering the pressure to separate vaporized solvent from the fat. The vaporized solvent may be liquefied and recycled. The fat-free residue may be treated to dissolve away gluten, to form glucose by enzymatic hydrolysis and/or subjected to alcoholic fermentation.

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Inventors: Schwengers, Dieter (Dormagen, DT)

Application Number: 414495
Filing Date: 1973-11-09
Publication_date: 1976-02-17
Assignee: Pfeifer & Langen (Cologne, DT)
Primary Class(es): 426/11 426/16, 426/417, 426/425, 426/429, 426/430, 435/96, 435/163
Other Classes:
US Patent Ref:

2107529	Feb, 1938	Fetzer	426/436.
2286334	Jun, 1942	Brandt	426/430.
3155523	Nov, 1964	Reich	426/430.
3337414	Aug, 1967	Wilson	195/31.
3519431	Jul, 1970	Wayne	426/430.
3795750	Mar, 1974	Levine	426/429.

Other Refs:
Primary Examiner: Naff, David M.
Assistant Examiner:
Attorney: Burgess, Dinklage & Sprung