Sunflower seed protein isolate and a process for producing the same
AssigneesAvril, Universite De Lorraine, Centre National De La Recherche Scientifique
InventorsOlivier GALET, Romain KAPEL, Sara ALBE SLABI
Life of this patent
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Abstract
A process for preparing a sunflower seed protein isolate and a protein isolate which is obtainable by such process. The process comprises the following steps: mixing a defatted seed meal with an aqueous NaCl solution at a basic pH; separating said solubilised protein solution from solids; diafiltering said solubilised protein solution through an ultrafiltration membrane system using an aqueous NaCl diafiltration NaCl solution and at least 2 diavolumes of said aqueous NaCl diafiltration solution, diafiltering said NaCl-diafiltered protein; concentrating said purified protein solution; and drying said purified protein concentrate to obtain a protein isolate.
Claims20
A sunflower seed protein isolate, said isolate comprising sunflower globulins and albumins, said isolate having a solubility in aqueous solution which is superior, or equal, to 65% at pH 3 and superior or equal to 65% at pH 7;
- wherein said solubility at the given pH is calculated as follows:
- S
-
- o
-
- l
- p
-
- H
- =
- (
- C
- s
- ×
- V
- s
- C
- i
- ×
- V
- i
- )
- ×
- 1
-
- 0
-
- 0
- wherein:
- SolpH—protein solubility at given pH (%),
- CS—protein concentration in supernatant (g·L−1),
- VS—final volume of solution after adjustment of pH (mL),
- Ci—initial protein concentration (g·L−1),
- Vi—initial volume of solution (mL).
Dependencies are inferred from the claim text.