Method for providing a proteinaceous composition without pH adjustment
AssigneeMichael Foods, Inc.
InventorsNoel G. Rudie, Alicia Stube, Daniel L. Vance, Todd D. Bohman
Life of this patent
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Abstract
A protein-rich composition can be provided from egg albumen via a process that involves diafiltering with purified water an egg albumen concentrate. Collected retentate from the diafiltration step constitutes a protein-rich composition which, on a dry basis, can include less than 1% (w/w) lipids. The composition can be spray dried to a protein isolate solid which is substantially free of sugars.
Claims20
A method for providing a protein isolate powder from egg albumen, said method comprising:
- a) removing at least 25 percent volume (% (v/v)) of water from said egg albumen to provide an albumen concentrate, said albumen concentrate having a protein content of at least 20 percent mass (% (w/w));
- b) diafiltering said albumen concentrate with purified water until the filtrate exhibits an electrical conductance of no more than 5 millisiemens (mS), said diafiltering being performed with an ultrafiltration membrane having a nominal molecular weight cutoff of 10±2.5 kilodaltons (kDa);
- c) collecting retentate from said diafiltering step so as to provide a protein-rich composition that comprises, on a dry basis, less than 0.5% (w/w) lipids and that is substantially free of sugars;
- and
- d) spray drying said protein-rich composition so as to provide said protein isolate powder,
- wherein the albumen concentrate and the protein-rich composition are not pH-adjusted prior to drying to provide the protein isolate powder.
A process for providing a protein isolate powder from egg albumen, said process comprising:
- a) using reverse osmosis, removing at least 25% (v/v) of water from said egg albumen to provide an albumen concentrate which has a protein content of at least 20% (w/w);
- b) diafiltering said albumen concentrate with purified water until the filtrate exhibits an electrical conductance of no more than 3 mS, said diafiltering being performed with an ultra-filtration membrane having a nominal molecular weight cutoff of 10±2.5 kDa;
- c) collecting retentate from said diafiltering step so as to provide a protein-rich composition that comprises, on a dry basis, less than 0.1% (w/w) lipids and that is substantially free of sugars;
- and
- d) spray drying said protein-rich composition so as to provide said protein isolate powder,
- wherein the albumen concentrate and the protein-rich composition are not pH-adjusted prior to spray drying to provide the protein isolate powder.
A method for providing a protein isolate powder from egg albumen comprising:
- a) removing greater than or equal to 25% by volume of water from the egg albumen to provide an albumen concentrate having a protein content of greater than or equal to 20% by mass;
- b) diafiltering the albumen concentrate with purified water until the filtrate exhibits an electrical conductance of less than or equal to 5 millisiemens (mS);
- c) collecting retentate from the diafiltering step to provide a protein-rich composition comprising, on a dry basis, less than 0.5% by mass lipids;
- and
- d) spray drying the protein-rich composition to provide the protein isolate powder,
- wherein the albumen concentrate and the protein-rich composition are not pH-adjusted prior to spray drying to provide the protein isolate powder.
Dependencies are inferred from the claim text.