Method for purifying vegetable oil obtained by mechanical extraction
OwnerRobert Michael Quearinventor
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Abstract
This invention relates to a method of refining a crude vegetable oil by removing insoluble material from the oil to provide a substantially clarified oil. The process comprises cooling the vegetable oil and maintaining the vegetable oil at the desired low temperature. The vegetable oil is then heated to provide an amount of a substantially clarified oil that can be separated from the insoluble material. The process is useful for a wide variety of oils including soybean oil, sunflower oil, safflower oil, corn oil, sesame oil, rapeseed oil, linseed oil, cottonseed oil, rice bran oil, perilla oil, castor oil, olive oil, tsubaki oil, coconut oil, palm oil, hemp seed oil, tung oil, kapok oil, tea seed oil.
Claims20
A process for purifying vegetable oil, said process comprising:
- maintaining the vegetable oil at a temperature below about 10° C.;
- heating the vegetable oil to a temperature sufficient to provide an amount of substantially clarified oil;
- and
- drawing off the clarified vegetable oil.
A process for purifying a vegetable oil composition containing insoluble material, said process comprising:
- cooling the vegetable oil to a temperature below about 10° C.;
- maintaining for a time to obtain agglomeration;
- heating to a temperature above about 50° C. to provide a clarified vegetable oil capable of being separated from the insoluble material;
- and
- drawing off the substantially clarified vegetable oil.
Dependencies are inferred from the claim text.