US 5,141,763 A · Process for producing protein product from bone-containing animal material

Abstract

Bone-containing animal material, such as slaughterhouse waste which has been scoured and dewatered by pressing, is separated into a bone-containing phase and a meat protein-containing phase by stirring the material with water after comminution to form a suspension (2) which is subjected to a separation in a hydrocyclone (8). The suspension is hereby separated into a bone-containing phase leaving the cyclone through its bottom nozzle, and into a meat protein-containing phase leaving the cyclone through its vortex detector and being processed into a protein product in a manner known per se. In the phase rich in meat protein at least about 70 weight-% of the dry matter is protein, whereas the bone-containing phase has a protein-content in the dry matter of less than 40 weight-%, including the ossein contained in the bones.

Claims12

Dependent claims

A process for producing protein products from a bone-containing animal material, comprising the steps of:

comminuting a bone-containing animal material;
stirring the comminuted material with water to form a suspension;
conveying the suspension to a hydrocyclone using a pump, said hydrocyclone having a bottom nozzle and a vortex detector;
separating the suspension into a bone-containing phase and a meat protein containing phase in the hydrocyclone, said bone-containing phase leaving the hydrocyclone through the bottom nozzle and the meat protein containing phase leaving the hydrocyclone through the vortex detector;
hot water or steam treating the bone-containing phase until bone proteins contained in said bone-containing phase are essentially suspended and/or dissolved, and then isolating a water phase containing the suspended and/or dissolved bone proteins from a mineral product comprising undissolved bone parts from the bone-containing phase;
and then
processing the meat protein containing phase into a protein product.

4 more elements

Dependencies are inferred from the claim text.

Process for producing protein product from bone-containing animal material

Life of this patent

Process for producing protein product from bone-containing animal material

Life of this patent

Abstract

Claims12