Special anti-freckle agent for bagged organic deoxidizer as well as preparation method and application of special anti-freckle agent

Abstract

The invention relates to the technical field of C08L97 / 00, in particular to a special anti-freckle agent for a bagged organic deoxidizer and a preparation method and application thereof.The special anti-freckle agent at least comprises a reducing component, a stabilizing component and a water locking component, and the mass ratio of the reducing component to the stabilizing component to the water locking component is (10-30): (50-80): (5-20). The organic deoxidizer added with the anti-freckle agent does not generate colored freckles in the use link, so that the safety of the product is enhanced, the concern of suspected powder leakage or deterioration is eliminated, and the pollution to food and the potential safety hazard of the food are completely eradicated.

Description

Technical Field

[0001] The invention relates to the technical field of C08L97 / 00, in particular to a special anti-spot agent for bagged organic deoxidizer and a preparation method and application thereof. Background Art

[0002] Deoxidizer, also known as oxygen absorber or deoxidizer, can absorb oxygen and reduce the adverse effects of oxygen on food. It can effectively inhibit the growth of mold and aerobic bacteria, extend the shelf life of food, and prevent oil rancidity, meat oxidation browning, and vitamin oxidation loss in food. There are two ways to use deoxidizers. One is to add it directly to food, and the other is to make it into small bags with independent packaging and place it in a relatively closed food package for use. The latter is separated from the food and is not ingested into the body with the food. It is safer and has the characteristics of reasonable price, small size, and easy use. The existing bagged deoxidizer products on the market are divided into two categories: inorganic series (the active ingredient is mainly reduced iron powder) and organic series (the active ingredient is mainly ascorbic acid and its sodium salt). Organic deoxidizers are also called constant pressure deoxidizers because they can release approximately the same amount of carbon dioxide in the process of removing oxygen. This type of deoxidizer can maintain the air pressure of food packaging while keeping food fresh, preventing deformation of food packaging. The released carbon dioxide gas can effectively inhibit the growth and reproduction of bacteria. It does not use metallic iron powder, can be microwaved and pass metal detection, and its application range is becoming increasingly wider.

[0003] Considering that deoxidizers have no inhibitory effect on the growth of anaerobic and facultative anaerobic bacteria, compound deoxidizers such as alcohol have begun to appear on the market in order to further broaden the antibacterial spectrum of microorganisms, such as the Chinese patent (publication number CN 114568617A) discloses an iron-based antibacterial deoxygenation dual-effect food preservative, and the Chinese patent (publication number CN 115444089 A) discloses an antibacterial deoxygenation dual-effect food preservative. However, there is a prominent problem in the use of organic deoxidizer products, that is, black or other colored spots will slowly form on the surface of the packaging bag, especially in high temperature and high humidity scenes and when used in combination with alcohol, which greatly affects consumers' perception of food and brings potential safety risks to food. This is because ascorbic acid and its sodium salt will form colored intermediates after reacting with oxygen. The colored intermediates will migrate to the surface of the packaging bag with water evaporation to form spots. The high temperature and high humidity environment and highly volatile alcohol strengthen this process, and the problem of spots is particularly serious. This problem can be alleviated to a certain extent by upgrading the packaging material, but it cannot be eliminated, and the upgrading packaging material significantly increases the cost, and also reduces the oxygen removal rate. Chinese patent (publication number is CN 116762916A) adsorbs the deoxidizer prepared by the catalyst compound to the prepared adsorption carrier, and the obtained constant pressure type deoxidizer will not have colored spots when used for a long time, and has a good fresh-keeping effect. However, the preparation process of the modified catalyst and the water-absorbing carrier described in the application is relatively complicated, and the preparation process needs to be carried out under closed anaerobic production conditions, the water and carrier of the finished product account for a high proportion, and the functional component is low. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a special anti-spot agent for bagged organic deoxidizer. By optimizing the formulation of various raw materials in the anti-spot agent, the organic deoxidizer product with the anti-spot agent added will not produce colored spots during use, thereby enhancing product safety, eliminating concerns about suspected powder leakage or deterioration, and preventing food contamination and food safety hazards.

[0005] On one hand, the present invention provides a bagged anti-spot agent for organic deoxidizer, which comprises at least a reducing component, a stabilizing component and a water-locking component, wherein the mass ratio of the reducing component, the stabilizing component and the water-locking component is (10-30): (50-80): (5-20).

[0006] As a preferred technical solution, the mass ratio of the reducing component, the stabilizing component and the water-locking component is (15-20): (65-75): (10-15).

[0007] As a preferred technical solution, the reducing component is selected from at least one of sodium sulfite, sodium pyrosulfite and sodium dithionite, preferably one of sodium sulfite, sodium pyrosulfite and sodium dithionite.

[0008] As a preferred technical solution, the stabilizing component is selected from at least one of EDTA-disodium, magnesium carbonate, and magnesium sulfate, preferably one of EDTA-disodium, magnesium carbonate, and magnesium sulfate.

[0009] As a preferred technical solution, the water-locking component is at least one of sodium metasilicate, sodium tripolyphosphate, and sodium hexametaphosphate, and preferably the water-locking component is one of sodium metasilicate, sodium tripolyphosphate, and sodium hexametaphosphate.

[0010] The present invention prepares the anti-spot agent by using reducing components, stabilizing components and water-locking components at a certain mass ratio, and can be widely applied to high-temperature and high-humidity environments and alcohol-compounded deoxidizer products. When the deoxidizer is used for a long time, no colored spots will appear.

[0011] Specifically, the anti-spot agent provided by the present invention is prepared by combining sodium sulfite, sodium pyrosulfite, sodium dithionite with disodium EDTA, magnesium carbonate, magnesium sulfate, sodium metasilicate, sodium tripolyphosphate and sodium hexametaphosphate at random, thereby reducing the chromogenic group containing unsaturated bonds to single bonds, thereby effectively inhibiting the coloration of organic matter; and stabilizing the active oxygen and VC oxidation intermediates, thereby avoiding inert condensation into colored substances, thereby not only reducing the incidence of rust spots in organic deoxidizer products, but also increasing the oxygen absorption of organic deoxidizer products, thereby reducing the unit oxygen absorption cost; and also greatly reducing the migration rate of intermediate pigments with water vapor evaporation, thereby effectively inhibiting the migration of intermediate pigments with water vapor evaporation to form colored spots on the surface of the organic deoxidizer packaging bag.

[0012] Another aspect of the present invention provides a method for preparing a bagged anti-spot agent for organic deoxidizer, which comprises at least the following steps: adding a reducing component, a stabilizing component and a water-locking component into a container in sequence, stirring and mixing, and obtaining the anti-spot agent.

[0013] The third aspect of the present invention provides an application of a bagged anti-spot agent for organic deoxidizer, which is applied to the preparation of organic deoxidizer, wherein the addition amount of the bagged anti-spot agent for organic deoxidizer in the organic deoxidizer is 1-10wt%.

[0014] As a preferred technical solution, the added amount of the special anti-spot agent for the packaged organic deoxidizer in the organic deoxidizer is 3-7wt%.

[0015] As a preferred technical solution, the raw materials for preparing the organic deoxidizer include at least a deoxidizer and an anti-spot agent.

[0016] As a preferred technical solution, the raw materials for preparing the deoxidizer include at least 30-50% sodium ascorbate, 0-10% sodium carbonate, 5-15% sodium bicarbonate, 15-30% water carrier, 0-10% alcohol, and water to make up the balance, calculated by mass percentage.

[0017] The preparation method of the organic deoxidizer is as follows: the deoxidizer and the anti-spot agent are mixed to obtain the organic deoxidizer.

[0018] Adding the anti-spot agent provided by the present invention to the conventional organic deoxidizer formula can completely avoid the generation of spots without changing the packaging material. The method is simple and efficient, does not significantly increase the cost, and has extremely high market promotion value.

[0019] Beneficial Effects

[0020] 1. The present invention provides a special anti-spot agent for bagged organic deoxidizer. By optimizing the combination of various raw materials in the anti-spot agent, the organic deoxidizer product with the anti-spot agent added will not produce colored spots during use, thereby enhancing product safety, eliminating concerns about suspected powder leakage or deterioration, and preventing food pollution and food safety hazards.

[0021] 2. The present invention prepares the anti-spot agent by using reducing components, stabilizing components and water-locking components at a certain mass ratio, which can be widely used in high temperature and high humidity environments and alcohol compound type deoxidizer products. When the deoxidizer is used for a long time, no colored spots will appear.

[0022] 3. The anti-spot agent provided by the present invention combines sodium sulfite, sodium pyrosulfite, sodium dithionite with disodium EDTA, magnesium carbonate, magnesium sulfate, sodium metasilicate, sodium tripolyphosphate, and sodium hexametaphosphate at random, thereby reducing the chromogenic group containing an unsaturated bond to a single bond, thereby effectively inhibiting the coloration of organic matter; on the other hand, it stabilizes the active oxygen and VC oxidation intermediates, and avoids inert condensation into colored substances, thereby not only reducing the incidence of rust spots in organic deoxidizer products, but also increasing the oxygen absorption of organic deoxidizer products, thereby reducing the unit oxygen absorption cost; it can also greatly reduce the migration rate of intermediate pigments with water vapor evaporation, thereby effectively inhibiting the migration of intermediate pigments with water vapor evaporation to form colored spots on the surface of the organic deoxidizer packaging bag.

[0023] 4. Adding the anti-spot agent provided by the present invention to the conventional organic deoxidizer formula can completely avoid the generation of spots without changing the packaging material. It is simple and efficient, does not significantly increase the cost, and has extremely high market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a graph showing the results of an anti-spot test of the organic deoxidizer of Application Examples 1-3 and Application Comparative Example 1 in a constant temperature and humidity chamber at 40°C / RH85% / 7d. From left to right in the graph, they correspond to Application Example 1, Application Comparative Example 1, Application Example 2, Application Comparative Example 1, Application Example 2, Application Comparative Example 1, and Application Example 2, Application Comparative Example 1.

[0025] Figure 2This is a graph showing the results of an anti-spot test of the organic deoxidizer of Application Examples 4-6 and Application Comparative Example 1 in a constant temperature and humidity chamber at 40°C / RH85% / 7d. From left to right in the graph, they correspond to Application Example 4, Application Comparative Example 1, Application Example 5, Application Comparative Example 1, Application Example 6, Application Comparative Example 1.

[0026] Figure 3 This is a graph showing the results of an anti-spot test of the organic deoxidizer of Application Examples 7-9 and Application Comparative Example 2 in a constant temperature and humidity chamber at 40°C / RH85% / 7d. From left to right in the graph, they correspond to Application Example 7, Application Comparative Example 2, Application Example 8, Application Comparative Example 2, Application Example 9, Application Comparative Example 2, respectively.

[0027] Figure 4 This is a graph showing the results of an anti-spot test of the organic deoxidizer of Application Examples 10-12 and Application Comparative Example 2 in a constant temperature and humidity chamber at 40°C / RH85% / 7d. From left to right in the graph, they correspond to Application Example 10, Application Comparative Example 2, Application Example 11, Application Comparative Example 2, Application Example 12, Application Comparative Example 2. DETAILED DESCRIPTION

[0028] Examples 1-6

[0029] On the one hand, Examples 1-6 of the present invention provide a special anti-spot agent for a bagged organic deoxidizer, and the formula is shown in Table 1 in terms of mass percentage.

[0030] Table 1

[0031]

[0032]

[0033] On the other hand, Examples 1-6 of the present invention provide a method for preparing a bagged anti-spot agent for organic deoxidizer, comprising the following steps: adding a reducing component, a stabilizing component and a water-locking component into a container in sequence and stirring and mixing to obtain the anti-spot agent.

[0034] Application Examples 1-12, Application Comparative Examples 1, 2

[0035] The application examples 1-12 and the application comparison examples 1 and 2 of the present invention provide an organic deoxidizer, and the formulas thereof are shown in Table 2 and Table 3 in terms of mass percentage.

[0036] Table 2

[0037]

[0038] Table 3

[0039]

[0040]

[0041] Performance Testing Methods

[0042] The organic deoxidizer provided in the application examples and comparative examples of the present invention was subjected to a 40°C / RH85% / 7d constant temperature and humidity chamber anti-spot test. Specifically, the organic deoxidizer was placed in a constant temperature and humidity chamber at a temperature of 40°C and a humidity of 85%. After 7 days, the spots were taken out and observed. If the spot diameter was less than 1mm, it was recorded as "small", and if the spot diameter was ≥1mm, it was recorded as "large". The number of spots was recorded. The results are shown in Table 4 and Figure 1-4 .

[0043] Table 4

[0044]

[0045] 2. Refer to the national standard GB / T 41896-2022 food deoxidizer quality requirements and internal methods to carry out the following performance tests. The test results are shown in Table 5.

[0046] (1) Determination of nominal deoxygenation time and displacement volume ratio: Put the test sample into a packaging bag (oxygen permeability ≤ 20mL / m 2 ·24h·0.1MPa, KOP material packaging bag), take 1.5g absorbent paper (use 1g paper towel to absorb 0.5g water) and put it into the bag, fill it with 5 times the nominal volume of the model and seal it, place the KOP bag in a 25℃ constant temperature box, use a headspace analyzer to detect the carbon dioxide volume concentration (recorded as X%) and oxygen volume concentration (recorded as Y1%) in the bag, when the oxygen volume concentration in the KOP bag is less than 0.1%, the time required is the deoxygenation time, at least 3 groups of parallel tests are carried out, and the average value is taken as the final result. The replacement volume ratio is calculated according to the following formula: replacement volume ratio = X / (20.9-Y1), 0.85≤replacement volume ratio≤1.15 is considered qualified. (Note: The oxygen content in normal air is 20.9%).

[0047] (2) Determination of total oxygen absorption: Put the test sample into a packaging bag (oxygen permeability ≤ 20mL / m 2 ·24h·0.1MPa, KOP material packaging bag), take 1.5g of absorbent paper (use 1g of paper towel to absorb 0.5g of water) and put it into the bag, fill it with 20 times the nominal volume of the model (recorded as V) of air and seal it, place the KOP bag in a 25℃ constant temperature box, and use a headspace analyzer to detect the oxygen volume concentration in the bag after 7 days (recorded as Y2%); at least 3 groups of parallel tests are carried out, and the average value is taken as the final result. The total oxygen absorption is calculated according to the following formula: Total oxygen absorption = V×(20.9-Y2) (Note: The oxygen content in normal air is 20.9%).

[0048] (3) Alcohol volatile content: Under normal temperature and pressure (unless otherwise specified), after the unit packaged product has been placed for three days, use an alcohol concentration tester to test the alcohol volume fraction in the packaging bag. The alcohol concentration is not less than 1.0% VOL, which is qualified.

[0049] (4) Spot incidence: Take 100 bags of organic deoxidizer provided in the application examples and comparative examples as test samples, place them in a constant temperature and humidity chamber at a temperature of 25°C and a humidity of 60% and a temperature of 40°C and a humidity of 85%, respectively, and take them out after 7 days to observe the spots. The spot incidence is calculated according to the following formula: Spot incidence = number of bags with spots / 100 × 100%.

[0050] Table 5

[0051]

[0052]

Claims

1. A special anti-spot agent for bagged organic deoxidizer, characterized in that: It at least comprises a reducing component, a stabilizing component and a water-locking component, wherein the mass ratio of the reducing component, the stabilizing component and the water-locking component is (10-30): (50-80): (5-20).

2. The anti-spot agent for bagged organic deoxidizer according to claim 1, characterized in that: The mass ratio of the reducing component, the stabilizing component and the water-locking component is (15-20): (65-75): (10-15).

3. The anti-spot agent for bagged organic deoxidizer according to claim 2, characterized in that: The reducing component is selected from at least one of sodium sulfite, sodium pyrosulfite and sodium dithionite.

4. The anti-spot agent for bagged organic deoxidizer according to claim 3, characterized in that: The stabilizing component is selected from at least one of EDTA-disodium, magnesium carbonate and magnesium sulfate.

5. The anti-spot agent for bagged organic deoxidizer according to claim 4, characterized in that: The water-locking component is at least one of sodium metasilicate, sodium tripolyphosphate and sodium hexametaphosphate.

6. A method for preparing a special anti-spot agent for a packaged organic deoxidizer according to any one of claims 1 to 5, characterized in that: The method comprises at least the following steps: adding a reducing component, a stabilizing component and a water-locking component into a container in sequence and stirring and mixing them to obtain the product.

7. An application of the bagged anti-spot agent for organic deoxidizer according to any one of claims 1 to 5, characterized in that: The invention is applied to the preparation of an organic deoxidizer, wherein the addition amount of the special anti-spot agent for the packaged organic deoxidizer in the organic deoxidizer is 1-10wt%.

8. The use of the special anti-spot agent for bagged organic deoxidizer according to claim 7, characterized in that: The added amount of the special anti-spot agent for bagged organic deoxidizer in the organic deoxidizer is 3-7wt%.

9. The use of the special anti-spot agent for bagged organic deoxidizer according to claim 8, characterized in that: The raw materials for preparing the organic deoxidizer include at least a deoxidizer and an anti-spot agent.

10. The use of the special anti-spot agent for bagged organic deoxidizer according to claim 9, characterized in that: The raw materials for preparing the deoxidizer at least include, by mass percentage: 30-50% sodium ascorbate, 0-10% sodium carbonate, 5-15% sodium bicarbonate, 15-30% water carrier, 0-10% alcohol, and the balance is made up of water.

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