CN112655825A - Feather protein peptide particle composition and preparation method thereof - Google Patents
Feather protein peptide particle composition and preparation method thereof Download PDFInfo
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- CN112655825A CN112655825A CN202011538773.7A CN202011538773A CN112655825A CN 112655825 A CN112655825 A CN 112655825A CN 202011538773 A CN202011538773 A CN 202011538773A CN 112655825 A CN112655825 A CN 112655825A
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Abstract
The invention belongs to the technical field of feather protein peptide processing, and particularly relates to a feather protein peptide particle composition and a preparation method thereof. The feather protein peptide particle composition comprises the following components in percentage by mass: 75-90% of feather protein peptide; 2-5% of dextrin; 5-18% of polyvinylpyrrolidone; 3-10% of a moisture-proof coating agent. According to the invention, feather protein peptide, dextrin and polyvinylpyrrolidone are prepared into round particles, and then the feather protein peptide is coated by a moisture-proof coating agent, so that the influence of the outside on the feather protein peptide can be reduced, the feather protein peptide is prevented from going bad, the feed intake of adult pigs is improved, and the nutrition is provided for the growth of adult pigs.
Description
Technical Field
The invention belongs to the technical field of feather protein peptide processing, and particularly relates to a feather protein peptide particle composition and a preparation method thereof.
Background
With the rapid development of poultry farming, the amount of feather by-product brought about by poultry is also increasing. Existing studies have shown that: the feather, pig, cow and sheep skin and hoof and horn of chicken, duck and goose contain more than 80% of crude protein (containing 10 kinds of amino acid essential for animal), 1.2% of crude fat, 10.2% of crude ash, 0.04% of calcium, 0.12% of phosphorus, 4.65 megacalories/kg of total energy, 3.13 megacalories/signoff of metabolic energy, macroelements, microelements, vitamins and some unknown growth factors.
At present, in the prior art, feather and other raw materials are subjected to enzymolysis to obtain feather protein peptide, and the feather protein peptide is used as one of main sources of protein in feed to provide nutrition for the growth of livestock and poultry. For example, Chinese patent CN111802508A discloses a method for preparing feather peptide powder, which comprises using poultry feather as raw material, pulverizing the feather, placing into a container, injecting water, adding keratinase of 50-400U and alkaline protease of 100-360 million U per 1g of feather, adjusting pH to 10-11.5, reacting at 40-50 deg.C for 4-8h, and drying the filtrate to obtain peptide powder product. The peptide content of the peptide powder obtained by the invention is higher than 95%, the relative molecular mass of the peptide is below 2000 daltons, the purity is higher, and the peptide powder can be processed into animal protein feed raw materials. However, most researchers have focused their attention on the production and functional development of feather peptides and have placed little effort on the storage stability of feather peptides.
Wangmayili and the like find that the duck blood globule small peptide powder obtained by enzymolysis has extremely strong hygroscopicity in the production of the duck blood globule small peptide powder. The feather protein peptide and the duck blood ball small peptide powder are obtained by enzymolysis, and meanwhile, in practical application, the feather protein peptide is similar to other peptides, and the phenomena of powder flowability reduction, caking, stickiness and even liquefaction can occur after the feather protein peptide absorbs moisture. Meanwhile, along with the increase of the storage time, certain microorganisms are easy to breed in the feather protein peptides, so that the feather protein peptides are easy to denature and deteriorate, and the adverse effects of nutrient loss and the like are caused.
Disclosure of Invention
The invention aims to provide a feather protein peptide particle composition and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a feather protein peptide particle composition comprises the following components in percentage by mass:
75-90% of feather protein peptide;
2-5% of dextrin;
5-18% of polyvinylpyrrolidone;
3-10% of a moisture-proof coating agent.
Preferably, the moisture resistant coating agent is comprised of a low acyl gellan gum and a quaternary ammonium methacrylate copolymer.
Preferably, the mass ratio of the low-acyl gellan gum to the quaternary ammonium methacrylate copolymer is 1.2-1.8: 1.
preferably, the mass ratio of the low-acyl gellan gum to the quaternary ammonium methacrylate copolymer is 1.5: 1.
preferably, the preparation method of the moisture-proof coating agent comprises the following steps: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 80-100 ℃ to obtain a substance A; and heating the low-acyl gellan gum to 80-100 ℃, adding the substance A into the low-acyl gellan gum under a stirring state, and finally filling the substance A into a liquid spray gun to obtain the low-acyl gellan gum.
The invention also aims to provide a preparation method of the feather protein-containing peptide composition, which comprises the following steps:
s1) preparation of rounded particles: weighing feather protein peptide and dextrin according to the formula ratio, uniformly mixing, gradually adding polyvinylpyrrolidone aqueous solution, and fully stirring to obtain a mixture; adding the mixture into an extrusion spheronizer to be spheronized and drying to obtain round particles;
s2) preparation of moisture-proof coating agent: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 80-100 ℃ to obtain a substance A; heating low-acyl gellan gum to 80-100 ℃, adding the substance A under stirring, and finally loading into a liquid spray gun;
s3) preparation of the composition: and (5) putting the round particles obtained in the step (S1) into a fluidized bed at 40-50 ℃, and spraying the coating liquid to the round particles by using a liquid spray gun to obtain the coating liquid.
The feather protein peptide particle composition is prepared by preparing round particles from feather protein peptide, dextrin and polyvinylpyrrolidone, and coating the feather protein peptide by a moisture-proof coating agent. Because the feather protein peptide contains partial feather which is not subjected to enzymolysis, has bad smell and is easy to influence the ingestion of adult pigs, the dissolution rate of the feather protein peptide is reduced as much as possible when the feather protein peptide is fed, but the dissolution rate of the feather protein peptide in gastric juice cannot be influenced. Therefore, the inventor finds that the moisture-proof coating agent prepared from the low-acyl gellan gum and the quaternary ammonium methacrylate copolymer according to a specific ratio can slow down the dissolution rate of the feather protein peptide, and supposes that a compound system formed by the low-acyl gellan gum and the quaternary ammonium methacrylate can improve the strength of the coating agent, so that the stability of the coating agent is improved.
Preferably, the extrusion rotation speed of the extrusion spheronizer in the step S1 is 8-12 r/min, and the spheronization rotation speed is 500-1000 r/min.
Preferably, the flow rate of the liquid spray gun in the step S3 is 4.5-5.0 mL/min, and the spray pressure is 0.11-0.13 MPa.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the invention, feather protein peptide, dextrin and polyvinylpyrrolidone are prepared into round particles, and then the feather protein peptide is coated by a moisture-proof coating agent, so that the influence of the outside on the feather protein peptide can be reduced, and the feather protein peptide is prevented from deteriorating.
(2) Experiments show that the dissolution rate of the phosphate buffer solution with the pH value of 5.8 is slow, so that the bad smell of feather protein peptide can be covered, the feed intake of adult pigs is increased, and nutrition is provided for the growth of the adult pigs.
Detailed Description
The present invention will be described in further detail with reference to the following examples. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.
The feather protein peptide is plectrum (enzymolysis feather powder) produced by the unit.
The mass ratio of the polyvinylpyrrolidone to the water in the polyvinylpyrrolidone aqueous solution is 1: 5 to 8.
Example 1
A feather protein peptide particle composition comprises the following components in percentage by mass:
79% of feather protein peptide; 3% of dextrin; 15% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Wherein, the moisture-proof coating agent is prepared from low-acyl gellan gum and quaternary ammonium methacrylate copolymer according to the weight ratio of 1.2: 1, in terms of mass ratio.
The preparation method of the feather protein peptide-containing composition comprises the following steps:
s1) preparation of rounded particles: weighing feather protein peptide and dextrin according to the formula ratio, uniformly mixing, gradually adding polyvinylpyrrolidone aqueous solution, and fully stirring to obtain a mixture; adding the mixture into an extrusion spheronizer for spheronization, wherein the extrusion rotating speed is 8r/min, the spheronization rotating speed is 800r/min, and drying to obtain round particles;
s2) preparation of moisture-proof coating agent: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 90 ℃ to obtain a substance A; heating low acyl gellan gum to 90 deg.C, adding into the substance A under stirring, and finally loading into a liquid spray gun;
s3) preparation of the composition: and (4) putting the round particles obtained in the step (S1) into a fluidized bed at the temperature of 45 ℃, and spraying the coating liquid to the round particles by using a liquid spray gun, wherein the flow rate of the liquid spray gun is 4.5mL/min, and the spraying pressure is 0.11 MPa.
Example 2
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 81.5%; 3.5 percent of dextrin; 12% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Wherein, the moisture-proof coating agent is prepared by mixing low-acyl gellan gum and quaternary ammonium methacrylate copolymer according to the weight ratio of 1.5: 1, in terms of mass ratio.
The preparation method of the feather protein peptide-containing composition comprises the following steps:
s1) preparation of rounded particles: weighing feather protein peptide and dextrin according to the formula ratio, uniformly mixing, gradually adding polyvinylpyrrolidone aqueous solution, and fully stirring to obtain a mixture; adding the mixture into an extrusion spheronizer for spheronization, wherein the extrusion rotating speed is 9r/min, the spheronization rotating speed is 600r/min, and drying to obtain round particles;
s2) preparation of moisture-proof coating agent: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 95 ℃ to obtain a substance A; heating low acyl gellan gum to 95 deg.C, adding into substance A under stirring, and finally loading into liquid spray gun;
s3) preparation of the composition: and (4) putting the round particles obtained in the step (S1) into a fluidized bed at the temperature of 45 ℃, and spraying the coating liquid to the round particles by using a liquid spray gun, wherein the flow rate of the liquid spray gun is 4.5mL/min, and the spraying pressure is 0.12 MPa.
Example 3
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 76%; 3% of dextrin; 18% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Wherein, the moisture-proof coating agent is prepared by mixing low-acyl gellan gum and quaternary ammonium methacrylate copolymer according to the weight ratio of 1.6: 1, in terms of mass ratio.
The preparation method of the feather protein peptide-containing composition comprises the following steps:
s1) preparation of rounded particles: weighing feather protein peptide and dextrin according to the formula ratio, uniformly mixing, gradually adding polyvinylpyrrolidone aqueous solution, and fully stirring to obtain a mixture; adding the mixture into an extrusion spheronizer for spheronization, wherein the extrusion rotating speed is 10r/min, the spheronization rotating speed is 900r/min, and drying to obtain round particles;
s2) preparation of moisture-proof coating agent: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 95 ℃ to obtain a substance A; heating low acyl gellan gum to 95 deg.C, adding into substance A under stirring, and finally loading into liquid spray gun;
s3) preparation of the composition: and (5) putting the round particles obtained in the step (S1) into a fluidized bed at 50 ℃, and spraying the coating liquid to the round particles by using a liquid spray gun, wherein the flow rate of the liquid spray gun is 5.0mL/min, and the spraying pressure is 0.13 MPa.
Comparative example 1
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 81.5%; 3.5 percent of dextrin; 12% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Therein, the moisture resistant coating agent example 2 is similar except that no low acyl gellan gum is added.
The preparation method is similar to example 2.
Comparative example 2
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 81.5%; 3.5 percent of dextrin; 12% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Wherein, the moisture-proof coating agent is prepared from low-acyl gellan gum and quaternary ammonium methacrylate copolymer according to the weight ratio of 3: 1, in terms of mass ratio.
The preparation method is similar to example 2.
Comparative example 3
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 81.5%; 3.5 percent of dextrin; 12% of polyvinylpyrrolidone; 3 percent of moisture-proof coating agent.
Wherein, the moisture-proof coating agent is prepared from low-acyl gellan gum and quaternary ammonium methacrylate copolymer according to the weight ratio of 0.5: 1, in terms of mass ratio.
The preparation method is similar to example 2.
Comparative example 4
A feather protein peptide particle composition comprises the following components in percentage by mass:
feather protein peptide 81.5%; 3.5 percent of dextrin; 12% of polyvinylpyrrolidone.
The preparation method is similar to example 2.
Experiment one, determination of Release Rate
1.1 simulation of Release in liquid feed
Experimental method the samples/comparative samples with equal mass were placed in phosphate buffer medium with pH 5.8 for testing, and the dissolution (%) of feather protein peptide was determined.
TABLE 1
As can be seen from Table 1, examples 1-3 have a lower dissolution rate in phosphate buffer media with pH 5.8, with the dissolution rate of example 2 being the lowest. Compared with example 2, the moisture-proof coating agent in comparative example 1 is quaternary ammonium methacrylate copolymer, and the obtained composition has higher dissolution rate within 30min, which shows that the addition of low acyl gellan gum in the moisture-proof coating agent is beneficial to reducing the dissolution rate of the composition; comparative examples 2 and 3 adjusted the mass ratio of low acyl gellan gum to quaternary ammonium methacrylate copolymer, resulting in its dissolution within 30min also being affected.
1.2 simulated Release in gastric juices of adult pigs
Experimental method the samples/comparative samples with equal mass were placed in hydrochloric acid medium with pH 2 for testing, and the dissolution (%) of feather protein peptide was determined.
TABLE 2
| Time | 5min | 10min | 15min | 20min |
| Example 1 | 43.1％ | 66.5％ | 91.1％ | 100％ |
| Example 2 | 41.6％ | 65.8％ | 90.5％ | 100％ |
| Example 3 | 45.3％ | 66.1％ | 90.7％ | 100％ |
| Comparative example 1 | 47.5％ | 69.3％ | 96.5％ | 100％ |
As can be seen from Table 2, the hydrochloric acid media at pH 2 of examples 1-3 and comparative example 1 are relatively close.
Experiment two, influence on growth of adult pigs
2.1 Experimental methods: selecting 30 healthy adult pigs with the age close to the day and the weight of 50.14 +/-5.32 kg, dividing the pigs into 3 groups, feeding the pigs in an experimental period of 30 days regularly and quantitatively every day, weighing the adult pigs on an empty stomach when the experiment starts and ends, recording daily feed intake, counting the total feed intake when the experiment ends, and solving the average daily gain and the average daily feed intake.
2.2 types of feed:
control group: feeding 40 wt% of basic feed and 60 wt% of water, and adjusting the pH value to 5.8;
experiment 1 group: feeding 10 wt% of example 2+30 wt% of the basal feed +60 wt% of water, adjusting the pH to 5.8;
experiment 2 group: 10 wt% of the comparative example 4+30 wt% of the basal feed +60 wt% of water was fed, and the pH was adjusted to 5.8.
The basic feed comprises the following components:
TABLE 3
| Composition of | Mass fraction (%) |
| Corn (corn) | 70 |
| Bean pulp | 10 |
| Puffed soybean | 10 |
| Fish meal | 1 |
| Wheat bran | 5 |
| Premix compound | 4 |
Wherein, the premix contains: vitamin A12 ten thousand U, vitamin D310 ten thousand U, vitamin E900mg, vitamin B group (B1, B2, B6, B12)500mg, range 220mg, nicotinic acid 500mg, folic acid 20mg, trace elements (Fe, Mn, Zn, I, Se)8500 mg.
2.3 calculation formula:
average daily gain (kg/d) (end-of-run weight-initial-run weight)/30;
average daily intake (kg/d) is total feed amount/30.
TABLE 4
| Group of | Average daily intake (kg/d) | Average daily gain (kg/d) |
| Experiment 1 group | 3.46 | 1.79 |
| Experiment 2 groups | 2.05 | 0.81 |
| Control group | 3.12 | 0.93 |
As can be seen from table 4, the average daily diet and average daily gain of the group of experiment 1 were higher than those of the group of experiment 2, which may be caused by that the group of experiment 1 can cover the bad smell of feather protein peptide and improve the diet rate when feeding adult pigs, and may be caused by that the feather protein peptide in the group of experiment 1 is less affected by the environment and has better quality, so that the adult pigs can absorb the feather protein peptide better.
Experiment III, storage stability test
The experimental method comprises the following steps: the samples of examples/comparative examples were placed in a test chamber at 40. + -. 2 ℃ and 75. + -. 10% relative humidity for 6 months, and examined for the amount of feather protein peptides at the end of each month of 0, 1, 2, 3, 6 months, and compared with 0 month.
TABLE 5
| Group of | 0 month | 1 month | 2 month | 3 month | 6 month |
| Example 1 | 99.2 | 99.3 | 98.9 | 98.8 | 98.1 |
| Example 2 | 99.8 | 99.8 | 99.4 | 99.3 | 99.2 |
| Example 3 | 100.1 | 99.9 | 99.8 | 99.1 | 98.6 |
| Comparative example 1 | 99.5 | 99.5 | 99.2 | 98.5 | 91.7 |
As can be seen from Table 5, examples 1 to 3 had better storage stability, and comparative example 1 had inferior storage stability.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (8)
1. A feather protein peptide particle composition is characterized by comprising the following components in percentage by mass:
75-90% of feather protein peptide;
2-5% of dextrin;
5-18% of polyvinylpyrrolidone;
3-10% of a moisture-proof coating agent.
2. The feather protein peptide particle composition of claim 1 wherein the moisture resistant coating is comprised of low acyl gellan gum and a quaternary ammonium methacrylate copolymer.
3. The feather protein peptide particle composition of claim 2, wherein the mass ratio of the low acyl gellan gum to the quaternary ammonium methacrylate copolymer is 1.2-1.8: 1.
4. the feather protein peptide particle composition of claim 2 wherein the mass ratio of the low acyl gellan gum to the quaternary ammonium methacrylate copolymer is 1.5: 1.
5. the feather protein peptide particle composition of any one of claims 2 to 4, wherein the moisture-proof coating agent is prepared by: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 80-100 ℃ to obtain a substance A; and heating the low-acyl gellan gum to 80-100 ℃, and adding the substance A under a stirring state to obtain the low-acyl gellan gum.
6. The method for preparing the feather protein peptide-containing composition as claimed in any one of claims 1 to 5, comprising the steps of:
s1) preparation of rounded particles: weighing feather protein peptide and dextrin according to the formula ratio, uniformly mixing, gradually adding polyvinylpyrrolidone aqueous solution, and fully stirring to obtain a mixture; adding the mixture into an extrusion spheronizer to be spheronized and drying to obtain round particles;
s2) preparation of moisture-proof coating agent: heating the quaternary ammonium methacrylate copolymer to a molten state, and cooling to 80-100 ℃ to obtain a substance A; heating low-acyl gellan gum to 80-100 ℃, adding the substance A under stirring, and finally loading into a liquid spray gun;
s3) preparation of the composition: and (5) putting the round particles obtained in the step (S1) into a fluidized bed at 40-50 ℃, and spraying the coating liquid to the round particles by using a liquid spray gun to obtain the coating liquid.
7. The method for preparing the feather protein peptide composition as claimed in claim 6, wherein the extrusion speed of the extrusion spheronizer in step S1 is 8-12 r/min, and the spheronization speed is 500-1000 r/min.
8. The method for preparing the composition containing feather protein peptide of claim 6, wherein the flow rate of the liquid spray gun in the step S3 is 4.5-5.0 mL/min, and the spraying pressure is 0.11-0.13 MPa.
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Application publication date: 20210416 |