The present disclosure provides an albumin enriched PPI extraction process and albumin enriched PPI produced by the process and use of albumin enriched PPI. The albumin enriched PPI extraction process comprises steps of a) protein extraction from aqueous solution comprising pea flour, b) separation of solids from the aqueous solution, producing a protein-rich liquid fraction, and c) precipitation of protein by use of Na, Ca, or Mg salt or combination thereof, thereby producing an albumin enriched PPI.

The present disclosure provides an albumin enriched PPI extraction process and albumin enriched PPI produced by the process and use of albumin enriched PPI. The albumin enriched PPI extraction process comprises steps of a) protein extraction from aqueous solution comprising pea flour, b) separation of solids from the aqueous solution, producing a protein-rich liquid fraction, and c) precipitation of protein by use of Na, Ca, or Mg salt or combination thereof, thereby producing an albumin enriched PPI.

One aspect of the present invention relates to a method for producing a salt of an amino acid or a salt of a peptide compound or a solvate thereof, comprising the following steps (A) and (B): step (A); a step of contacting a lithium-containing substance with a mixture to be purified which is a mixture of the following purification target (i) and the following impurities (ii): (i) the amino acid having a protective group at the N terminus or the peptide compound having a protective group at the N terminus, and (ii) compounds other than the purification target, and step (B); a step of precipitating a lithium salt of the purification target.

In certain embodiments, the present invention provides novel antibody purification methods and systems using a potentially simple and cost-efficient means. In some embodiments, customized Z-33 derived from Staphylococcus aureus Protein A is used to construct immuno-amphiphile molecules which can assemble into immunofibers in aqueous solution with bioactive epitopes on the surface and have IgG binding ability.

The present disclosure relates to a method of producing collagen from an animal and more particularly, the present invention relates to a method for producing collagen by applying an acid and metal fluoride combination to an animal skin.

In certain embodiments, the present invention provides novel antibody purification methods and systems using a potentially simple and cost-efficient means. In some embodiments, customized Z-33 derived from Staphylococcus aureus Protein A is used to construct immuno-amphiphile molecules which can assemble into immunofibers in aqueous solution with bioactive epitopes on the surface and have IgG binding ability.