Ultrafiltration process for obtaining protein isolates of vegetable origin
First Claim
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1. A process for obtaining a purified and concentrated isolate of a vegetable source which comprisesdissolving the ground seeds, flour or meal from sunflower or colza in an alkaline solution, thereby forming an alkaline protein solution;
- subjecting said solution to ultrafiltration with a semipermeable membrane having a pore diameter of 0.1 to 30 mμ
at a temperature of 2°
-30°
C, to form a retentate having an amount of nitrogenous matter (N ×
6.25) in the range of 3 to 12% by weight of the retentate;
adding to said retentate a volume of wash liquid while continuing ultrafiltration at a temperature of 2°
-30°
C, such that when the volume of the permeate is equal to said added volume, the concentration of nitrogenous matter (N ×
6.25) in the retentate will be 70 to 85% by weight of the dry matter of said retentate;
adjusting the temperature of said retentate to 20°
-60°
C and continuing said ultrafiltration procedure; and
thereafter recovering said concentrated and purified retentate.
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Abstract
An easily extrudable protein can be obtained from a vegetable source, such as sunflowers, by treating an alkaline solution of the protein obtained from said source, to ultrafiltration, through a semi-permeable membrane, having a pore size of 0.1 to 30 mμ, and adding a wash liquid to said solution while continuing said ultrafiltration.
30 Citations
10 Claims
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1. A process for obtaining a purified and concentrated isolate of a vegetable source which comprises
dissolving the ground seeds, flour or meal from sunflower or colza in an alkaline solution, thereby forming an alkaline protein solution; -
subjecting said solution to ultrafiltration with a semipermeable membrane having a pore diameter of 0.1 to 30 mμ
at a temperature of 2°
-30°
C, to form a retentate having an amount of nitrogenous matter (N ×
6.25) in the range of 3 to 12% by weight of the retentate;adding to said retentate a volume of wash liquid while continuing ultrafiltration at a temperature of 2°
-30°
C, such that when the volume of the permeate is equal to said added volume, the concentration of nitrogenous matter (N ×
6.25) in the retentate will be 70 to 85% by weight of the dry matter of said retentate;adjusting the temperature of said retentate to 20°
-60°
C and continuing said ultrafiltration procedure; andthereafter recovering said concentrated and purified retentate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification