Solventless extraction process
First Claim
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1. A process for obtaining lipids from microorganisms comprising:
- (a) releasing intracellular lipids of cells of the microorganisms grown in a fermentation medium into the fermentation medium by lysing the cells, rupturing the cells, or permeabilizing the cells;
(b) producing a phase separated mixture from the fermentation medium comprising a heavy layer and a light layer, wherein said heavy layer comprises an aqueous solution and said light layer comprises said lipids;
(c) separating said heavy layer from said light layer; and
(d) obtaining said lipids from said light layer.
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Abstract
The present invention provides a method for extracting lipids from microorganisms without using organic solvent as an extraction solvent. In particular, the present invention provides a method for extracting lipids from microorganisms by lysing cells and removing water soluble compound and/or materials by washing the lysed cell mixtures with aqueous washing solutions until a substantially non-emulsified lipid is obtained.
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24 Claims
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1. A process for obtaining lipids from microorganisms comprising:
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(a) releasing intracellular lipids of cells of the microorganisms grown in a fermentation medium into the fermentation medium by lysing the cells, rupturing the cells, or permeabilizing the cells; (b) producing a phase separated mixture from the fermentation medium comprising a heavy layer and a light layer, wherein said heavy layer comprises an aqueous solution and said light layer comprises said lipids; (c) separating said heavy layer from said light layer; and (d) obtaining said lipids from said light layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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