Functional peptide protein powder, and preparation method and applications thereof

Abstract

The present invention discloses a method for preparing functional peptide protein powder using blood cells of livestock and poultry as raw materials. The method is as follows: continuously centrifuging fresh blood of livestock and poultry to separate blood plasma and blood cells; processing the blood cells by physical and chemical methods to break cell membranes and denature intracellular protein; after the membrane breaking and denaturing process, adding acid (or base) and a protease preparation into the blood cell solution to enzymatically hydrolyze the blood cell protein into small peptides and amino acids containing functional ingredients; then centrifuging the products of enzymolysis and adding acid and a decolorizer to performing decoloration; and finally performing spray drying on the decolorized blood cell solution. The present invention also provides functional peptide protein powder prepared by the method. The functional peptide protein powder has a high protein content, a high essential amino acid content, a high bioactive peptide content, a high digestion and absorption rate, and a strong antioxidant capacity, can improve the disease resistance of livestock and poultry, protein deposition and production performance, can be widely used for livestock, poultry and aquatic animals, and can also be used as a substitute for fish meal and soybean meal.

Description

technical field [0001] The invention belongs to the technical field of animal-derived protein feed preparation, and in particular relates to a functional peptide protein powder and its preparation method and application. Background technique [0002] With the rapid development of the animal husbandry industry, the global livestock and poultry production continues to rise, which drives the growth of feed production. In 2012, the global feed production reached 959 million tons, while my country's feed production ranks first in the world. With the increase of feed production, the demand for feed raw materials has increased, especially protein raw materials with important nutritional and physiological functions, which have become the largest raw material supply bottleneck affecting the development of animal husbandry in my country. Therefore, how to develop and utilize existing feed protein resources, improve the effective utilization rate and quality of protein, increase revenu...

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Problems solved by technology

[0007] 2) The product is poor in palatability, has a bloody smell, is dark brown, and is sticky, which greatly limits the amount of product added

The composition of blood meal products changes greatly, which affects the feeding effect. This may be related to the microorganisms in the blood, especially the pathogenic bacteria. The microorganisms reproduce in large numbers, which reduces the pH and affects the nutritional value of the product.

However, blood products are prone to moisture absorption, caking, maggots, mold, and corruption, so blood products are not suitable for long-term storage

[0009] 4) The traditional processing method does not sufficiently excavate the molecular resources of hemoglobin, and the functionality of the product has not been fully utilized

In addition to the high protein content, the blood of livestock and poultry also contains carbohydrates, fats, minerals, vitamins, enzymes and some active peptides. and other functions, while the existing production and processing technologies pay more attention to the preparation of traditional nutritional products, while ignoring the functional characteristics of livestock and poultry blood

[0010] 5) In terms of processing technology, the traditional processing technology of livestock and poultry blood and its products have inherent defects

In the process of common processing, the cells in the blood harden, poor in palatability, which is not conducive to digestion and absorption; the content of crude protein in the blood meal processed by fermentation is low and unstable, the fermentation time is long, and the amount of carrier is large; although the enzymatic hydrolysis method is relatively mild, protease bitter peptide

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