Continuous protein and lipid recovery from food animal processing byproducts
First Claim
1. A process for recovering protein and lipid from animal byproducts or krill comprising:
- a. homogenizing animal byproducts or krill with water to form a homogenate;
b. solubilizing the homogenate by adjusting the pH of the homogenate to form a first pH adjusted composition;
wherein, antifoam agents are added to the first pH adjusted composition;
c. separating the first pH adjusted composition forming a light fraction containing lipids, a medium fraction containing protein in solution, and a heavy fraction containing fat-free impurities;
d. adjusting the pH of the medium fraction to about the isoelectric point of the proteins thereby precipitating the medium fraction forming a second pH adjusted composition;
wherein, antifoam agents are added to the second pH adjusted composition wherein the proteins have been precipitated; and
e. separating the second pH adjusted composition forming a light fraction containing water and a heavy fraction containing precipitated proteins;
wherein the byproducts include skin, bone, scales, fin, heads, frames, or viscera.
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Accused Products
Abstract
A process and system for recovering protein and lipid from food animal byproducts, and the products thereof, involves homogenizing animal byproducts with water to form a homogenate, solubilizing the homogenate by adjusting the pH of the homogenate to form a first pH adjusted composition, separating the first pH adjusted composition forming a light fraction containing lipids (oil), a medium fraction containing protein in solution, and a heavy fraction containing fat-free impurities, separation by first centrifugation, adjusting the pH of the medium fraction to about the isoelectric point of the proteins thereby precipitating the medium fraction forming a second pH adjusted composition, and separating the second pH adjusted composition forming a light fraction containing water and a heavy fraction containing precipitated proteins. The water may then be recycled and used in the homogenization of further byproducts.
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Citations
32 Claims
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1. A process for recovering protein and lipid from animal byproducts or krill comprising:
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a. homogenizing animal byproducts or krill with water to form a homogenate; b. solubilizing the homogenate by adjusting the pH of the homogenate to form a first pH adjusted composition;
wherein, antifoam agents are added to the first pH adjusted composition;c. separating the first pH adjusted composition forming a light fraction containing lipids, a medium fraction containing protein in solution, and a heavy fraction containing fat-free impurities; d. adjusting the pH of the medium fraction to about the isoelectric point of the proteins thereby precipitating the medium fraction forming a second pH adjusted composition;
wherein, antifoam agents are added to the second pH adjusted composition wherein the proteins have been precipitated; ande. separating the second pH adjusted composition forming a light fraction containing water and a heavy fraction containing precipitated proteins;
wherein the byproducts include skin, bone, scales, fin, heads, frames, or viscera. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 17)
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14. A protein containing solid composition recovered from an animal, the protein containing solid composition being formed by the process of:
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a. homogenizing animal byproducts or krill with water to form a homogenate; b. solubilizing the homogenate by adjusting the pH of the homogenate to form a first pH adjusted composition;
wherein, antifoam agents are added to the first pH adjusted composition;c. separating the first pH adjusted composition forming a light fraction containing lipids (oil), a medium fraction containing protein in solution, and a heavy fraction containing fat-free impurities; d. adjusting the pH of the medium fraction to about the isoelectric point of the proteins thereby precipitating the medium fraction forming a second pH adjusted composition;
wherein, antifoam agents are added to the second pH adjusted composition wherein the proteins have been precipitated; ande. separating the second pH adjusted composition forming a light fraction containing water and a heavy fraction containing precipitated proteins;
wherein the byproducts include skin, bone, scales, fin, heads, frames, or viscera. - View Dependent Claims (15, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A process for recovering protein and lipid from animal byproducts or hill, consisting of the steps:
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a. homogenizing animal byproducts or krill with water to form a homogenate; b. solubilizing the homogenate by adjusting the pH of the homogenate to form a first pH adjusted composition; c. separating the first pH adjusted composition forming a light fraction containing lipids, a medium fraction containing protein in solution, and a heavy fraction containing fat-free impurities; d. adjusting the pH of the medium fraction to about the isoelectric point of the proteins thereby precipitating the medium fraction forming a second pH adjusted composition; and e. separating the second pH adjusted composition forming a light fraction containing water and a heavy fraction containing precipitated proteins; wherein the byproducts include skin, bone, scales, fin, heads, frames, or viscera. - View Dependent Claims (28, 29, 30, 31, 32)
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Specification