Patent ID: 11937618
Assignee: MICHAEL FOODS, INC.
Field: Food chemistry (Chemistry)
Classification: CPC A  C | IPC A  C

Claim 7:
8. 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.