CN115299490A - Clean-keeping poultry egg bionic preservative film coating and preparation method and application thereof - Google Patents
Clean-keeping poultry egg bionic preservative film coating and preparation method and application thereof Download PDFInfo
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- CN115299490A CN115299490A CN202210855104.5A CN202210855104A CN115299490A CN 115299490 A CN115299490 A CN 115299490A CN 202210855104 A CN202210855104 A CN 202210855104A CN 115299490 A CN115299490 A CN 115299490A
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- 238000009501 film coating Methods 0.000 title claims abstract description 75
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 28
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- 102000002322 Egg Proteins Human genes 0.000 claims abstract description 27
- 108010000912 Egg Proteins Proteins 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 16
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- 239000000243 solution Substances 0.000 claims description 24
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- KHSLHYAUZSPBIU-UHFFFAOYSA-M benzododecinium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 KHSLHYAUZSPBIU-UHFFFAOYSA-M 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B5/00—Preservation of eggs or egg products
- A23B5/06—Coating eggs with a protective layer; Compositions or apparatus therefor
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
- A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Meat, Egg Or Seafood Products (AREA)
Abstract
The application discloses a bionic preservative film coating for keeping poultry eggs clean, and a preparation method and application thereof. The preservative film coating comprises the following components in parts by weight: 5% -20% of food-grade polyvinyl alcohol; 1-5% of food-grade acrylic resin; 0.2 to 2 percent of food-grade preservative; the balance being water. The preservative film coating can be used as a preservative film for cleaning eggs, food-grade polyvinyl alcohol and food-grade acrylic resin in the preservative film coating can perform a biological crosslinking reaction under the action of hydrogen bonds to form a thin film with an interpenetrating crosslinked grid structure, and the thin film can effectively seal air holes and cracks on the surface of an eggshell, prevent the dissipation of gas and water in the eggshell and prevent the invasion of bacteria to a certain extent; the film also has better structural strength than a natural original ecological film, cannot be easily abraded, can provide better protection effect for eggs, and effectively reduces the damage rate of the eggs in the links of production, processing, transportation, sale and the like.
Description
Technical Field
The application belongs to the technical field of food preservation material preparation, and particularly relates to a bionic preservative film coating for clean poultry eggs, and a preparation method and application thereof.
Background
The poultry eggs which are not cleaned are called 'dirty eggs', and the surfaces of the 'dirty eggs' have excrement, feathers or powder residues of feed, so that salmonella, escherichia coli, avian influenza virus and the like are easily carried. The American national institute consults an approved egg product inspection method, and classifies the eggs with dirty surfaces as dirty eggs, destroys the dirty eggs which are checked and confirmed in the market, and the national standard for implementing clean eggs is issued in China.
However, a layer of protective film is naturally arranged outside the shell of a fresh egg, so that bacteria can be effectively prevented from entering the egg, the freshness of the egg is kept, once the egg is washed by water, the natural protective film is damaged, and the egg without the natural protective film can be quickly deteriorated and cannot be stored for a long time if no measures are taken, and the shelf life of the egg is only 24 hours. Therefore, the 'clean eggs' sold in the market at present are all prepared by cleaning fresh eggs with water, immediately sterilizing with ultraviolet rays, and coating white oil for fresh keeping, wherein the white oil is an anticorrosive agent, has a certain anticorrosive function and no function of killing bacteria, the white oil permeates into the inner side of the eggshell from the eggshell shell, closes small holes in the eggshell and blocks the invasion of bacteria, the fresh keeping effect of the white oil on the eggs is poorer than that of the natural preservative films of the eggs, the fresh keeping effect is only about 2/3 of that of the natural protective films, and oil stains still exist on the surfaces of the eggshells after the white oil is coated for 24 hours. Moreover, the white oil can not increase the strength of the eggs, can only delay the deterioration of the eggs to a certain extent, and can not reduce the damage rate of the eggs in the production and sales links, particularly, the quail eggs have very thin eggshells and are very easy to damage, so that the problem that how to effectively reduce the damage rate of the eggs is urgently needed to be solved by egg processing enterprises is solved.
On the other hand, the surfaces of quail eggs and preserved eggs have a large number of black spots, even egg shells of eggs laid by different laying places or different laying hens have some spots, and the number of the spots is increased along with the increase of time, so that the spots or uneven colors on the egg shells are covered, the egg shells are beautified, and the consumption demand objectively exists in the market.
Disclosure of Invention
The application aims to overcome at least one defect in the prior art, provides the bionic preservative film coating for the clean eggs and the preparation method and application thereof, and aims to solve the technical problems that the preservation effect of the conventional eggs preserved by white oil is poor, and the strength of the shells of the eggs cannot be increased, so that the breakage rate is high.
In order to achieve the purpose of the application, the first aspect of the application provides a clean-keeping poultry egg bionic preservative film coating which comprises the following components in parts by weight:
5 to 20 percent of food-grade polyvinyl alcohol;
1-5% of food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
the balance being water.
Further, the feed also comprises the following components in parts by weight: 3 to 15 percent of food-grade calcium carbonate.
Further, the feed also comprises the following components in parts by weight: 0.1-1 per mill of food-grade colorant.
In a second aspect of the application, a preparation method of a clean-keeping poultry egg bionic preservative film coating is provided, which comprises the following steps:
preparing a first aqueous solution containing food-grade polyvinyl alcohol;
preparing a second aqueous solution containing food-grade acrylic resin;
mixing the first aqueous solution and the second aqueous solution to obtain a mixture solution;
adding a food-grade preservative into the mixture solution to obtain the preservative film coating; the preservative film coating comprises the following components in parts by weight:
5% -20% of the food-grade polyvinyl alcohol;
1% -5% of the food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
the balance being water.
The third aspect of the application provides an application of the bionic preservative film coating for keeping clean of poultry eggs, which comprises the following steps: so that the preservative film coating forms a preservative film layer on the outer surface of the eggshell.
Further, the method comprises the following steps: and spraying the preservative film coating on the outer surface of the eggshell of the poultry, and performing primary drying to form a preservative film layer.
Further, before the preservative film coating is sprayed on the outer surface of the eggshell of the poultry egg, the steps of cleaning the poultry egg, secondary drying and ultraviolet disinfection are also included.
Further, the temperature of the first drying is 20 to 35 ℃.
Compared with the prior art, the method has the following technical effects:
the bionic preservative film coating for cleaning poultry eggs has the advantages of simple formula and low cost; the bionic preservative film coating for the clean-keeping eggs can be used as a preservative film for the clean-keeping eggs, food-grade polyvinyl alcohol and food-grade acrylic resin in the preservative film coating can perform a biological crosslinking reaction under the action of hydrogen bonds to form a thin film with an interpenetrating crosslinked grid structure, and the thin film can effectively seal air holes and cracks on the surface of an eggshell, prevent the dissipation of gas and moisture in the eggshell and prevent the invasion of bacteria to a certain extent; the film also has better structural strength than a natural original ecological film, cannot be easily worn, can provide better protection effect for the poultry eggs, and effectively reduces the damage rate of the poultry eggs in the links of production, processing, transportation, sale and the like. In addition, the preservative component in the preservative film coating can effectively inhibit bacteria, so that the preservative film can achieve a better preservation effect.
The bionic poultry egg cleaning preservative film coating is simple in preparation method, stable in preparation conditions and easy to control, and can be produced in a large scale.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In this application, the term "and/or" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a is present alone, A and B are present simultaneously, and B is present alone. Wherein A and B can be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In this application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, "at least one (one) of a, b, or c," or "at least one (one) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, and c may be single or plural, respectively.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not imply an execution sequence, some or all of the steps may be executed in parallel or executed sequentially, and the execution sequence of each process should be determined by its function and inherent logic, and should not limit the implementation process of the embodiments of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
The weight of the related components mentioned in the specification of the embodiments of the present application may not only refer to the specific content of each component, but also refer to the proportional relationship of the weight of each component, and therefore, the proportional enlargement or reduction of the content of the related components according to the specification of the embodiments of the present application is within the scope disclosed in the specification of the embodiments of the present application. Specifically, the mass described in the specification of the embodiments of the present application may be a mass unit known in the chemical industry field such as μ g, mg, g, kg, etc.
The terms "first" and "second" are used for descriptive purposes only and are used for distinguishing purposes such as substances from one another, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
In a first aspect, the embodiment of the application provides a clean-keeping poultry egg bionic preservative film coating which comprises the following components in parts by weight:
5 to 20 percent of food-grade polyvinyl alcohol;
1-5% of food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
the balance being water.
All components in the preservative film coating formula disclosed by the embodiment of the application have good water solubility. The polyvinyl alcohol and the acrylic resin in the preservative film coating formula of the embodiment of the application respectively play a role of a film forming agent and a film aid agent, and the film forming performance of a single component can be improved by compounding the two components.
The preservative film coating provided by the embodiment of the application is made of food-grade degradable raw materials, and is safe and reliable to use. The preservative film coating disclosed by the embodiment of the application is simple in formula and low in cost, after the preservative film coating is coated on the surface of an egg shell of an egg, in the drying film forming process of the coating, food-grade polyvinyl alcohol and food-grade acrylic resin in the coating can perform a physical crosslinking reaction under the action of hydrogen bonds, namely, the polyvinyl alcohol side group hydroxyl and the polyacrylic resin side group carboxyl form hydrogen bonds, and physical crosslinking points are formed through the hydrogen bonds, so that a thin film with an interpenetrating crosslinking grid structure, namely the preservative film, is colorless, transparent and smooth, is similar to a natural original ecological film of the egg in visual sense, is similar to the natural original ecological film in function, can effectively seal air holes and cracks on the surface of the egg shell, prevents the loss of gas and moisture, and can prevent the invasion of bacteria to a certain extent. However, the preservative film has better structural strength than a natural original ecological film, and cannot be easily abraded, so that the preservative film not only has longer time-effect on the protection of the poultry eggs, but also can reduce the damage rate of the poultry eggs in the links of production, processing, transportation, sale and the like to a certain extent. In addition, the preservative in the coating formula can effectively inhibit bacteria, so that the preservative film can achieve a better preservation effect.
The preservative in the preservative film coating formula of the embodiment of the application can be selected from potassium sorbate, white oil, benzalkonium bromide and the like. In the specific examples of the present application, the preservative is exemplified by white oil; the molecular weight of the food grade polyvinyl alcohol is 60000-100000, and the molecular weight of the food grade acrylic resin is 10000-60000.
The preservative film coating formula of the embodiment of the application can further comprise 3% -15% of food-grade calcium carbonate. By adding the food-grade calcium carbonate, the strength and the thickness of the preservative film after film forming can be further enhanced, and the defect on the surface of the eggshell can be covered by utilizing the white characteristic of the calcium carbonate, so that a good defect covering effect is achieved.
The preservative film coating formula of the embodiment of the application can further comprise 0.1-1 per mill of food-grade colorant. Coloring agents with different colors, such as lemon yellow pigment, allure red pigment, caramel pigment and the like, can be added into the preservative film coating formula as required, so that the dried preservative film presents different colors, and on one hand, the colored coloring agent can meet different color requirements, and on the other hand, a better defect covering effect can be achieved. In addition, calcium carbonate in the preservative film coating formula can be used as a carrier of a coloring agent, so that the coloring stability of colors can be increased.
Preferably, the clean-keeping poultry egg bionic preservative film coating comprises the following components in parts by weight:
5 to 20 percent of food-grade polyvinyl alcohol;
1-5% of food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
3 to 15 percent of food-grade calcium carbonate;
0.1-1 per mill of food-grade colorant;
the balance being water.
The five components in the preservative film coating provided by the embodiment of the application can cooperate with each other to form a protective barrier, so that the shelf life of eggs can be effectively prolonged, flaws on the surfaces of the shells can be effectively covered, and the breakage rate of the eggs can be effectively reduced.
In a second aspect of the embodiment of the application, a preparation method of a clean-keeping poultry egg bionic preservative film coating is provided, which comprises the following steps:
(1) Preparing a first aqueous solution containing food-grade polyvinyl alcohol;
(2) Preparing a second aqueous solution containing food-grade acrylic resin;
(3) Mixing the first aqueous solution and the second aqueous solution to obtain a mixture solution;
(4) Adding a food-grade preservative into the mixture solution to obtain the preservative film coating; food-grade calcium carbonate or food-grade coloring agent can be further added into the preservative film coating.
The bionic preservative film coating for cleaning poultry eggs provided by the embodiment of the application has the advantages of simple preparation method, stable preparation conditions and easiness in control, and can realize large-scale production.
In a third aspect of the embodiments of the present application, there is provided an application of a bionic preservative film coating for clean eggs, comprising the following steps: the preservative film coating forms a preservative film layer on the outer surface of the egg shell of the poultry egg.
Specifically, the method comprises the following steps: and spraying the preservative film coating on the outer surface of the egg shell of the poultry egg, and performing primary drying to form a preservative film layer. In the embodiment of the application, the first drying temperature is 20-35 ℃, and the first drying temperature is below 35 ℃ so as to prevent the nutritional loss of the poultry eggs in the drying process.
Before the preservative film coating is sprayed on the outer surface of the eggshell of the poultry egg, the embodiment of the application can further comprise the steps of cleaning the poultry egg, secondary drying and ultraviolet disinfection. The second drying temperature is below 35 ℃.
The bionic poultry egg cleaning preservative film coating and the preparation method and application thereof are illustrated by a plurality of specific embodiments.
Example 1
The embodiment 1 of the application provides a clean-keeping poultry egg bionic preservative film coating and a preparation method and application thereof.
The bionic poultry egg cleaning preservative film coating provided by the embodiment of the application comprises the following components in parts by weight:
5% of food-grade polyvinyl alcohol;
1% of food-grade acrylic resin;
0.2% of food-grade white oil;
3% of food-grade calcium carbonate;
the balance being water.
The preparation method and the application process of the clean-keeping poultry egg bionic preservative film coating provided by the embodiment of the application are as follows:
(1) Heating 500mL of water to 50 ℃, weighing 50g of food-grade polyvinyl alcohol solid, adding into 500mL of hot water, and stirring until the polyvinyl alcohol is completely dissolved;
(2) Weighing 10g of food-grade acrylic resin, adding the food-grade acrylic resin into 400mL of water at normal temperature, and stirring until the acrylic resin is completely dissolved;
(3) Mixing the polyvinyl alcohol solution and the acrylic resin solution, and uniformly dispersing by using a homogenizer to form a mixture solution;
(4) Weighing 30g of food-grade calcium carbonate, adding the food-grade calcium carbonate into the mixture solution, and uniformly dispersing the mixture solution by using a homogenizer;
(5) Adding 2mL of white oil into the mixture solution, adding water to 1000mL, and uniformly stirring to obtain 1000mL of clean-keeping bionic poultry egg preservative film coating;
(6) After the clean-keeping poultry egg bionic preservative film coating is kept stand for 24 hours and the components of the coating are crosslinked and stabilized, the clean-keeping poultry egg bionic preservative film coating is evenly sprayed on the eggshells of poultry eggs which are cleaned by water, dried and disinfected by ultraviolet rays;
(7) After being dried in the air at the temperature lower than 35 ℃, the shell of the clean poultry egg can be evenly coated with a layer of preservative film.
Example 2
The embodiment 2 provides a clean-keeping poultry egg bionic preservative film coating and a preparation method and application thereof.
The bionic poultry egg cleaning preservative film coating provided by the embodiment of the application comprises the following components in parts by weight:
15% of food-grade polyvinyl alcohol;
2% of food-grade acrylic resin;
1% of food-grade white oil;
8% of food-grade calcium carbonate;
the balance being water.
The preparation method and the application process of the bionic poultry egg cleaning preservative film coating provided by the embodiment of the application are as follows:
(1) Heating 500mL of water to 60 ℃, weighing 150g of food-grade polyvinyl alcohol solid, adding into 500mL of hot water, and stirring until the polyvinyl alcohol is completely dissolved;
(2) Weighing 20g of food-grade acrylic resin, adding the food-grade acrylic resin into 400mL of water at normal temperature, and stirring until the acrylic resin is completely dissolved;
(3) Mixing the polyvinyl alcohol solution and the acrylic resin solution, and uniformly dispersing by using a homogenizer to form a mixture solution;
(4) Weighing 80g of food-grade calcium carbonate, adding the food-grade calcium carbonate into the mixture solution, and uniformly dispersing the mixture solution by using a homogenizer;
(5) Adding 10mL of white oil into the mixture solution, adding water to 1000mL, and uniformly stirring to obtain 1000mL of clean poultry egg bionic preservative film coating;
(6) After the clean-keeping egg bionic preservative film coating is kept stand for 24 hours and all coating components are cross-linked and stabilized, the clean-keeping egg bionic preservative film coating is evenly sprayed on egg shells which are cleaned by water, dried and disinfected by ultraviolet rays;
(7) After being dried in the air at the temperature lower than 35 ℃, the shell of the clean poultry egg can be evenly coated with a layer of preservative film.
Example 3
The application embodiment 3 provides a bionic preservative film coating for cleaning poultry eggs and a preparation method and application thereof.
The clean-keeping poultry egg bionic preservative film coating comprises the following components in parts by weight:
20% of food-grade polyvinyl alcohol;
5% of food-grade acrylic resin;
2% of food-grade white oil;
12% of food-grade calcium carbonate;
food-grade water-soluble coloring agent luring 0.5 per mill of haematochrome;
the balance being water.
The preparation method and the application process of the clean-keeping poultry egg bionic preservative film coating provided by the embodiment of the application are as follows:
(1) Heating 500mL of water to 80 ℃, weighing 200g of food-grade polyvinyl alcohol solid, adding into 500mL of hot water, and stirring until the polyvinyl alcohol is completely dissolved;
(2) Weighing 50g of food-grade acrylic resin, adding the food-grade acrylic resin into 400mL of water at normal temperature, and stirring until the acrylic resin is completely dissolved;
(3) Mixing the polyvinyl alcohol solution and the acrylic resin solution, and uniformly dispersing by using a homogenizer to form a mixture solution;
(4) Weighing 120g of food-grade calcium carbonate and 0.5g of allura red pigment, adding the mixture into the mixture solution, and uniformly dispersing by using a homogenizer;
(5) Adding 20mL of white oil into the mixture solution, adding water to 1000mL, and uniformly stirring to obtain 1000mL of clean poultry egg bionic preservative film coating;
(6) After the clean-keeping poultry egg bionic preservative film coating is kept stand for 24 hours and the components of the coating are crosslinked and stabilized, the clean-keeping poultry egg bionic preservative film coating is evenly sprayed on the eggshells of poultry eggs which are cleaned by water, dried and disinfected by ultraviolet rays;
(7) After being dried in the air at the temperature lower than 35 ℃, the shell of the clean poultry egg can be evenly coated with a layer of preservative film.
Example 4
Compared with the example 2, the food-grade calcium carbonate is not contained in the formula, and the contents of other components and the preparation method are the same as those in the example 2.
Control experiment for eggshell preservation effect
Taking 700 fresh white-shell eggs, randomly dividing into seven groups, which are respectively: 100 original eggs which are not subjected to any treatment; 100 eggs after cleaning, drying and ultraviolet disinfection; 100 eggs processed by the existing white oil coating preservation technology; the application example 1 bionic refreshes 100 eggs; in the embodiment 2 of the application, 100 eggs are subjected to bionic fresh-keeping treatment; in the embodiment 3 of the application, 100 eggs are subjected to bionic fresh-keeping treatment; the application embodiment 4 is used for bionic fresh-keeping treatment of 100 eggs. The seven groups are numbered as 1, 2, 3, 4, 5, 6 and 7 in sequence, all the seven groups are placed in an incubator with the constant temperature of 40 ℃ and the constant humidity of 65%, 10 eggs are randomly sampled in every 10D group, hough Unit (HU) is determined, the grade of the eggs is determined according to the national egg grading standard, and the fresh-keeping effect is displayed.
The measurement results are shown in the following table.
| Group of | 0 | 10D | 20D | 30D | 40D | 50D | 60D |
| 1 | AA | AA | A | B | C | ||
| 2 | AA | C | |||||
| 3 | AA | A | B | C | |||
| 4 | AA | AA | AA | A | B | B | C |
| 5 | AA | AA | AA | A | A | B | C |
| 6 | AA | AA | AA | A | A | B | C |
| 7 | AA | AA | AA | A | A | B | C |
(note: egg classification criteria: HU >72 is AA-grade, 55-HU <71 is A-grade, 31-HU <54 is B-grade, HU <30 is C-grade, and C-grade is inedible-grade below.) calculation of Haugh Units (HU) is carried out by first weighing egg mass (accurate to 0.00019), measuring height of the widest part of concentrated protein at a distance of l cm from egg yolk with a protein height meter as protein height. Selecting 3 measurements, taking the average as protein height, and then calculating with the following formula:
HU＝100lg(H-1.7W 0.37 + 7.6); in the formula, H is the height/mm of the concentrated protein; w is egg mass/g)
As can be seen from the table above, the clean-keeping egg bionic preservative film has an excellent preservation effect, and can obviously prolong the shelf life of eggs.
According to GB/T4789.2-2008 food hygiene microbiological examination: the total bacterial count measuring method detects the total bacterial count of the rest eggs in the bionic preservative film coating preservation groups in the embodiments 1-4 after 60D, and the detection result is as follows: microorganisms are not detected in the contents of all samples, and the fact that the bionic preservative film has a good bacteriostatic effect is shown, and the shelf life is prolonged.
Eggshell strength control experiment
The strength of the eggshell refers to the magnitude of the pressure resistance of the eggshell. Eggshell strength can be measured using a texture analyzer in units of: pa. Internationally, eggs are required to withstand 2.65x10 when placed on their own 5 -3.5x10 5 Pa(2.7-3.6kg/cm 2 ) Of the pressure of (a). Because the pressure resistance of the longitudinal axis of the egg is larger than that of the transverse axis, the pressure resistance is measured when the egg is vertically placed in the experiment, and the pressure resistance is 2.94 x10 5 Pressure resistance at Pa. The eggshell strength, the eggshell thickness and the thickness uniformity are positively correlated. The instrument comprises: universal TA research type texture instrument, accessories: a P/100 platen probe and a longitudinal egg support device.
Taking 700 fresh white-shell eggs, randomly dividing into 6 groups, respectively: 100 original eggs without any treatment; 100 eggs after cleaning, drying and ultraviolet disinfection; 100 eggs processed by the existing white oil coating preservation technology; the application example 1 bionic refreshes 100 eggs; the application embodiment 2 is used for bionic fresh-keeping treatment of 100 eggs; in the embodiment 3 of the application, 100 eggs are subjected to bionic fresh-keeping treatment; the application embodiment 4 is used for bionic fresh-keeping treatment of 100 eggs. The seven groups are numbered as 1, 2, 3, 4, 5, 6 and 7 in sequence, and when the test eggs are placed vertically, the number is 2.94 multiplied by 10 5 pa (30 atmospheres) to characterize the shell strength of the eggs of the different test groups, and the measurement results are shown in the table below.
| Group of | Percentage of broken eggs (%) |
| 1 | 9 |
| 2 | 10 |
| 3 | 10 |
| 4 | 3 |
| 5 | 2 |
| 6 | 2 |
| 7 | 6 |
As can be seen from the table above, the bionic preservative film provided by the embodiment of the application can increase the strength and the thickness of the eggshell to a certain extent, and reduce the damage rate of the poultry eggs.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A bionic clean poultry egg preservative film coating is characterized by comprising the following components in parts by weight:
5 to 20 percent of food-grade polyvinyl alcohol;
1-5% of food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
the balance being water.
2. The bionic preservative film coating for keeping poultry eggs clean as claimed in claim 1, which is characterized by further comprising the following components in parts by weight: 3 to 15 percent of food-grade calcium carbonate.
3. The bionic preservative film coating for keeping poultry eggs clean as claimed in claim 2, which is characterized by further comprising the following components in parts by weight: 0.1-1 per mill of food-grade colorant.
4. A preparation method of a bionic preservative film coating for cleaning poultry eggs is characterized by comprising the following steps:
preparing a first aqueous solution containing food-grade polyvinyl alcohol;
preparing a second aqueous solution containing food-grade acrylic resin;
mixing the first aqueous solution and the second aqueous solution to obtain a mixture solution;
adding a food-grade preservative into the mixture solution to obtain the preservative film coating; the preservative film coating comprises the following components in parts by weight:
5% -20% of the food-grade polyvinyl alcohol;
1% -5% of the food-grade acrylic resin;
0.2 to 2 percent of food-grade preservative;
the balance being water.
5. The use of a bionic poultry egg sanitization preservative film coating according to any one of claims 1 to 3 for preserving poultry eggs, comprising the following steps: so that the preservative film coating forms a preservative film layer on the outer surface of the eggshell.
6. The application of the bionic preservative film coating for keeping poultry eggs clean as claimed in claim 5 in keeping poultry eggs clean, which is characterized by comprising the following steps: and spraying the preservative film coating on the outer surface of the eggshell of the poultry, and performing primary drying to form a preservative film layer.
7. The use of a bionic preservative film coating for keeping poultry eggs clean according to claim 6, wherein the steps of cleaning, secondary drying and ultraviolet disinfection of the poultry eggs are further included before the preservative film coating is sprayed on the outer surface of the shells of the poultry eggs.
8. The application of the bionic preservative film coating for keeping poultry eggs clean as claimed in claim 7, wherein the temperature of the first drying is 20-35 ℃.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894068A (en) * | 2012-09-24 | 2013-01-30 | 华中农业大学 | Novel egg coating preservative with oxyethlene higher aliphatic alcohol |
| US20150072050A1 (en) * | 2013-09-12 | 2015-03-12 | Ohio State Innovation Foundation | Coating Compositions for Shell Eggs |
| CN109016746A (en) * | 2018-08-01 | 2018-12-18 | 天津科技大学 | A kind of fresh meat indicating freshness absorbs water fresh-keeping membrane preparation method and purposes |
| CN112335726A (en) * | 2020-10-29 | 2021-02-09 | 湖北神丹健康食品有限公司 | Coating preservative and method for egg products |
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2022
- 2022-07-20 CN CN202210855104.5A patent/CN115299490A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102894068A (en) * | 2012-09-24 | 2013-01-30 | 华中农业大学 | Novel egg coating preservative with oxyethlene higher aliphatic alcohol |
| US20150072050A1 (en) * | 2013-09-12 | 2015-03-12 | Ohio State Innovation Foundation | Coating Compositions for Shell Eggs |
| CN109016746A (en) * | 2018-08-01 | 2018-12-18 | 天津科技大学 | A kind of fresh meat indicating freshness absorbs water fresh-keeping membrane preparation method and purposes |
| CN112335726A (en) * | 2020-10-29 | 2021-02-09 | 湖北神丹健康食品有限公司 | Coating preservative and method for egg products |
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| R. MEYER,等: "The Effect of Various Coatings on Shell Strengthand Egg Quality", POULTRY SCIENCE * |
| 陈南希,等: "聚乙烯醇/聚丙烯酸共混体系中的氢键作用", 2009年全国高分子学术论文报告会论文摘要集 * |
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Application publication date: 20221108 |