A constant pressure deoxidizer for preserving nuts and preparation method thereof

Abstract

The present invention discloses a constant pressure deoxidizer for nut preservation and a preparation method thereof, including: S1 preparation before production; S2 raw material preparation; S3 production preparation; S4 quality inspection; the S1 preparation before production includes: the workshop for making the deoxidizer should be kept clean, the workshop air purification level should reach the 100,000-level workshop, regular cleaning and disinfection should be carried out, the ground and walls should be wiped with disinfectants, the air should be purified through air filters, and the preparation workshop operation site should be away from moisture sources and chemical pollution sources to prevent the deoxidizer from getting damp or contaminated and deteriorating in advance. The present invention adopts a specific preparation method to regulate the internal air pressure of the packaging container, create a stable deoxygenation space, avoid the impact of pressure fluctuations on deoxygenation and nut packaging integrity, and at the same time effectively improve the quality and duration of nut preservation, which meets the food industry and consumer market demand for nut preservation.

Description

Technical Field

[0001] The invention relates to the technical field of constant-pressure deoxidizers, in particular to a nut preservation constant-pressure deoxidizer and a preparation method thereof. Background Art

[0002] Nuts are popular among consumers because of their rich nutrients (such as unsaturated fatty acids, proteins, vitamins, etc.), but at the same time these nutrients make them extremely sensitive to oxygen. During storage, oxygen can easily cause nuts to oxidize and become rancid, resulting in a poor taste, a rancid smell, and serious loss of nutrients, shortening the sales and consumption cycle of nuts. Although traditional deoxidizers can remove oxygen, when faced with the long-term storage needs of nuts, changes in internal packaging pressure, and complex storage environments, there are limitations such as non-continuous deoxygenation, inability to balance the internal packaging pressure, and susceptibility to humidity and temperature interference. It is difficult to effectively guarantee the freshness of nuts. Therefore, it is of great significance to develop a highly targeted and high-performance constant-pressure deoxidizer for nuts. Summary of the invention

[0003] In order to make up for the problem of insufficient performance of traditional deoxidizers in the prior art, the present invention proposes a nut preservation constant pressure deoxidizer and a preparation method thereof.

[0004] A constant pressure deoxidizer for preserving nuts and a preparation method thereof,

[0005] Includes: S1 pre-production preparation;

[0006] S2 Raw material preparation;

[0007] S3 production and preparation;

[0008] S4 quality inspection;

[0009] The preparation before S1 production includes: the workshop for producing the deoxidizer must be kept clean, the air purification level of the workshop must reach 100,000-level workshop, and it must be cleaned and disinfected regularly. The floor and walls must be wiped with disinfectants (such as hydrogen peroxide solution), and the air must be purified through air filters. The operation site of the preparation workshop must be away from moisture sources and chemical pollution sources to prevent the deoxidizer from getting damp or contaminated and deteriorating prematurely.

[0010] Preferably, the S2 raw material preparation includes: deoxidation main agent: select 40-300 mesh L-sodium ascorbate, D-sodium isoascorbate, natural organic raw materials, and ensure that the supplier provides strict particle size test report and ingredient safety instructions when purchasing;

[0011] Carbon dioxide supplement: Use potassium carbonate powder or small granules with a particle size of ≤0.5mm. Potassium carbonate has a certain hygroscopicity, which is beneficial to maintaining moisture in the material. It generates a certain proportion of carbon dioxide during the reaction. Prepare the material at a mass ratio of 1:2 with the deoxidation main agent and store it properly sealed to prevent water absorption and deliquescence.

[0012] Synergistic adsorbent: Prepare enzymatic lignin, select high purity (purity ≥ 90%), well-developed pores and secondary activation treatment, which is conducive to the synergistic adsorption of oxygen by the deoxidation agent, and prepare the material at a mass ratio of 1:3 with the deoxidation agent. Before the lignin enters the factory, it is necessary to sample and test the pore structure parameters (specific surface area, pore size distribution, etc.), and only those that meet the standards can be stored in a dry and cool place for future use;

[0013] Catalyst: Analytical pure copper sulfate crystals are used as a catalyst to accelerate the deoxygenation reaction. The purchase amount is calculated based on the formula and accounts for 0.5%-1% of the total system mass. They should be properly sealed and stored to prevent water absorption, deliquescence, crystallization and weathering that affect the catalytic effect.

[0014] Balancer: Sodium citrate, as a balancer for deoxygenation reaction, choose food grade sodium citrate, and the purity of food grade sodium citrate is required to be above 99%. The purchase amount is calculated according to the formula and accounts for 0.5%-5% of the total system mass. It should be properly sealed and stored to prevent water absorption and deliquescence;

[0015] Stabilizer: Modified starch, such as hydroxypropyl starch, corn modified starch, etc., is used as a stabilizer for formula stability. The modified starch should be food grade and the purity should be above 95%. The purchase amount should be calculated based on the formula accounting for 0.5%-5% of the total system mass. It should be properly sealed and stored to prevent moisture absorption and agglomeration.

[0016] Anti-loosening material: calcium hydroxide particles, particle size 1-3 mm, prepare sufficient raw materials according to the packaging design and the overall ratio of deoxidizer, store in a low humidity environment, and keep the packaging intact;

[0017] Packaging materials: The outer layer is made of PET composite film, and the tensile strength, oxygen permeability and moisture permeability indicators are inspected before entering the factory; the breathable diaphragm is made of food-grade silicone, and the customized processing ensures that the one-way air holes (aperture 0.1-0.3 mm) are evenly distributed and the density is compliant. A small amount of spare diaphragms are included for random inspection of the air hole quality. The material is soft, breathable and does not shed chips. It is sterilized and dried before use.

[0018] Preferably, the S3 production preparation includes: preparation of deoxygenated mixed material: setting up a stirring device in a nitrogen protection environment (oxygen content <0.1%), first adding weighed L-sodium ascorbate or D-sodium isoascorbate, potassium carbonate and sodium citrate, turning on the stirring (speed 100-300 rpm), allowing the sodium citrate to be fully mixed with L-sodium ascorbate or D-sodium isoascorbate and natural organic raw materials, and then slowly adding enzymatic lignin and modified starch, and continuously stirring for 10-15 minutes to make it preliminarily mixed; then dissolving the copper sulfate crystals with a certain amount of water and spraying them into the system, stirring for 20-30 minutes, and allowing the materials to fully contact to form a uniform deoxygenated active ingredient.

[0019] Production of anti-loosening bag: evenly load calcium hydroxide particles into food-grade non-woven bags, accurately control the weight of each bag according to the design specifications (such as 2-5 grams), heat seal the bag mouth, and ensure that the sealing strength is moderate to ensure no leakage. Sampling is performed to test the heat seal integrity and anti-loosening bag effect;

[0020] Assembly and packaging: The three sides of the bag are sealed with heat sealing technology to make an independent deoxidizer product. The heat sealing temperature, pressure and time are optimized through debugging (such as temperature 180-200℃, pressure 0.3-0.5 MPa, time 0.5-1 second) to ensure that the seal is tight and the diaphragm is intact. The anti-loosening bag is placed on one side of the outer packaging and separated by a non-woven fabric partition in the middle; finally, it is quality inspected, packaged and put into storage.

[0021] Preferably, the S4 quality inspection includes: randomly extracting the prepared deoxidizer, selecting equal amounts of almonds, cashews, and macadamia samples, and placing them in sealed packaging containers containing the deoxidizer of the present invention, ordinary deoxidizers, and no deoxidizer, respectively, and simulating storage in an environment of 25°C and 60% humidity. Regularly (7 days, 15 days, 30 days, etc.) detect the oxygen concentration and carbon dioxide concentration, peroxide value, acid value, moisture content, and flavor sensory score in the package. Experimental data show that the gas in the product packaging is in an anaerobic state, and the growth rate of the peroxide value of nuts using the deoxidizer of the present invention is 40%-60% lower than that of the ordinary group, the acid value is stable, the moisture content is stable, the air pressure inside the sealed packaging container is in a stable range (98-100kPa) for a long time, and the flavor score is always kept in a good range (8-10 points), which effectively extends the high-quality storage period of nuts by 3-6 months.

[0022] The present invention is beneficial in that:

[0023] 1. The present invention uses sodium citrate as a balancing agent for balancing the deoxygenation reaction, so that sodium citrate can adjust the reaction through the deliquescent characteristics of salts, thereby changing the microenvironment of the mixed components. Under low humidity conditions, the reaction can also proceed at a relatively stable rate, thereby ensuring that the deoxygenation reaction can proceed continuously and stably through a balancing mechanism, so that the packaging container is in a constant pressure state, avoiding problems such as deformation of the packaging container caused by abnormal air pressure.

[0024] 2. The present invention, through a specific preparation method, can control the performance of the deoxidizer from multiple dimensions, so that the deoxidizer can stably exert the deoxidation effect for a long time, provide a lasting preservation effect, and thus maintain the quality and stability of the nuts, and maintain their original color, aroma, taste and other sensory qualities. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 The present invention is a schematic diagram of the production process of a nut preservation constant pressure deoxidizer and a preparation method thereof. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1 As shown, a constant pressure deoxidizer for nut preservation and a preparation method thereof,

[0029] Includes: S1 pre-production preparation;

[0030] S2 Raw material preparation;

[0031] S3 production and preparation;

[0032] S4 quality inspection;

[0033] S1 Pre-production preparations include: the workshop for making deoxidizers must be kept clean, the air purification level of the workshop must reach 100,000, the workshop must be cleaned and disinfected regularly, the floor and walls must be wiped with disinfectants (such as hydrogen peroxide solution), the air must be purified through air filters, and the preparation workshop operating area must be away from moisture sources and chemical pollution sources to prevent the deoxidizer from getting damp or contaminated and deteriorating prematurely.

[0034] The components of deoxidizers, such as iron powder, enzymes, and organic reducing agents, have different chemical stabilities under different environmental conditions. Taking iron-based deoxidizers as an example, iron powder is prone to oxidation reactions in a humid environment. If the environmental humidity is high during the production process, the iron powder will react with moisture and oxygen in the air in advance, resulting in a decrease in its deoxidation performance. In a dry and clean production environment, this unexpected chemical reaction can be avoided, ensuring that the various components in the deoxidizer maintain good chemical activity before packaging, thereby ensuring that it can effectively adsorb oxygen during use; at the same time, the production environment also has an important influence on the physical properties of the deoxidizer. For example, some deoxidizers contain adsorbent components such as activated carbon, and their adsorption performance depends on their own pore structure and specific surface area. If there is a lot of dust in the production environment, dust particles may block the pores of the activated carbon and reduce its ability to adsorb oxygen.

[0035] The S2 raw material preparation includes: deoxidation main agent: select 40-300 mesh L-sodium ascorbate, D-sodium isoascorbate, and natural organic raw materials. When purchasing, it is necessary to ensure that the supplier provides a strict particle size test report and ingredient safety instructions. L-sodium ascorbate is the sodium salt form of vitamin C. Its core mechanism as a deoxidizer is that it has strong reducing properties. In the redox reaction, it can provide electrons and be oxidized itself, thereby preventing other substances from being oxidized. At the same time, it can also effectively inhibit the oxidation of fats in food, and remove free radicals that cause fat oxidation by providing electrons, such as hydroperoxide free radicals and hydroxyl free radicals, thereby interrupting the chain reaction of fat oxidation and extending the shelf life of food; D-sodium isoascorbate is an isomer of L-sodium ascorbate, which also has reducing properties, and functional groups such as hydroxyl and carbonyl in its chemical structure can participate in redox reactions. It can release electrons in solution and react with oxygen. For example, in an aqueous solution environment containing oxygen, sodium D-isoascorbate will react rapidly with oxygen to reduce oxygen to water, thereby reducing the oxygen content in the system.

[0036] Synergistic adsorbent: Prepare enzymatic lignin, select high-purity (purity ≥ 90%), well-developed pores and secondary activation nuts, which are conducive to the synergistic adsorption of oxygen, and prepare them at a mass ratio of 1:3 with the deoxidation main agent. Before lignin enters the factory, it is necessary to sample and test the pore structure parameters (specific surface area, pore size distribution, etc.), and only those that meet the standards can be stored in a dry and cool place for future use. Enzymatic lignin can play an antioxidant role, prevent the further progress of oxidation reaction, reduce the generation of oxidation products, and thus maintain the quality and stability of nuts, and maintain their original color, aroma, taste and other sensory qualities; at the same time, the structure of enzymatic lignin is relatively stable, and its adsorption and reaction process of oxygen is a relatively slow and continuous process, which can stably exert the deoxygenation effect for a long time, provide nuts with a lasting preservation effect, and avoid the problem of insufficient deoxygenation capacity in the later stage due to the excessive reaction of the deoxidizer in a short period of time; enzymatic lignin itself is non-toxic and odorless. Even if it has a certain contact with nuts during use, it will not cause pollution to the nuts or harm to human health. It has high safety and is suitable for food, medicine and other fields with strict safety requirements.

[0037] Catalyst: Analytical pure copper sulfate crystals are used as catalysts to accelerate the deoxygenation reaction. The purchase amount is calculated based on the formula and accounts for 0.5%-1% of the total system mass. They should be properly sealed and stored to prevent water absorption, deliquescence, and crystallization and weathering that affect the catalytic effect. Copper sulfate crystals stabilize the chemical environment of the deoxygenation reaction system to a certain extent. It can adjust the pH of the reaction system and prevent the accumulation of acidic substances produced by the deoxygenation reaction from causing a decrease in the reaction rate or the deoxidizer to become ineffective. At the same time, its own chemical stability also helps to maintain the stability of the entire deoxygenation system and ensure the continued progress of the deoxygenation reaction.

[0038] Balancer: Sodium citrate, as a balancer for balancing the deoxygenation reaction, food grade sodium citrate is selected, and the purity of food grade sodium citrate is required to be above 99%. The purchase amount is calculated according to the formula, accounting for 0.5%-5% of the total system mass. It should be properly sealed and stored to prevent water absorption and deliquescence. Sodium citrate can adjust the reaction through the deliquescence characteristics of salts, thereby changing the microenvironment of the mixed components, so that the reaction can proceed at a relatively stable rate even when the humidity is low. The air pressure in the package will not continue to drop, avoiding problems such as packaging deformation due to too low air pressure. Thereby maintaining the dynamic balance of air pressure and chemical reaction in the package. This balancing mechanism ensures that the deoxygenation reaction can proceed continuously and stably, effectively extending the shelf life of nuts. At the same time, sodium citrate, as a balancer for balancing the deoxygenation reaction, will not react with other components in the deoxidizer.

[0039] Anti-loosening material: Calcium hydroxide particles, with a particle size of 1-3 mm, have the ability to absorb carbon dioxide. They can absorb the escaped carbon dioxide during the packaging and storage process to prevent the packaging from loosening. Prepare sufficient raw materials based on the packaging design and the overall ratio of the deoxidizer, store in a low-humidity environment, and keep the packaging intact.

[0040] Packaging materials: The outer layer is made of PET composite film, which is oil-resistant, breathable and water vapor barrier. The tensile strength, oxygen permeability and moisture permeability indicators are tested upon entering the factory. The breathable diaphragm is made of food-grade silicone, and the customized processing ensures that the one-way air holes (pore diameter 0.1-0.3 mm) are evenly distributed and the density is compliant. A small amount of spare diaphragms are included for random inspection of air hole quality. The internal interlayer non-woven fabric is used to wrap the desiccant. The material is soft, breathable and does not shed. It is sterilized and dried before use.

[0041] The production and preparation of S3 includes: setting up a stirring device in a nitrogen protection environment (oxygen content <0.1%), first adding weighed L-sodium ascorbate or D-sodium isoascorbate, potassium carbonate and sodium citrate, starting stirring (speed 100-300 rpm), allowing the sodium citrate to be fully mixed with L-sodium ascorbate or D-sodium isoascorbate and natural organic raw materials, and then slowly adding enzymatic lignin and modified starch, and continuously stirring for 10-15 minutes to achieve preliminary uniform mixing; then dissolving copper sulfate crystals with a certain amount of water and pouring them into the system, stirring for 20-30 minutes, and allowing the materials to fully contact and react to form a uniform deoxygenation active component.

[0042] Production of anti-loosening bag: evenly load calcium hydroxide particles into food-grade non-woven bags, accurately control the weight of each bag according to the design specifications (such as 2-5 grams), heat seal the bag mouth, and ensure that the sealing strength is moderate to ensure no leakage. Sampling is performed to test the heat seal integrity and anti-loosening bag effect;

[0043] Assembly and packaging: The three sides of the bag are sealed with heat sealing technology to make an independent deoxidizer product. The heat sealing temperature, pressure and time are optimized through debugging (such as temperature 180-200℃, pressure 0.3-0.5 MPa, time 0.5-1 second) to ensure that the seal is tight and the diaphragm is intact. The anti-loosening bag is placed on one side of the outer packaging and separated by a non-woven fabric partition in the middle; finally, it is quality inspected, packaged and put into storage.

[0044] The S4 quality test includes: randomly extracting the prepared deoxidizer, selecting equal amounts of almonds, cashews, and macadamia samples, and placing them in sealed packaging containers containing the deoxidizer of the present invention, ordinary deoxidizer, and no deoxidizer, respectively, and simulating storage in an environment of 25°C and 60% humidity. Regularly (7 days, 15 days, 30 days, etc.) detect the oxygen concentration and carbon dioxide concentration, peroxide value, acid value, moisture content, and flavor sensory score in the package. Experimental data show that the gas in the product packaging is in an anaerobic state, the peroxide value growth rate of nuts using the deoxidizer of the present invention is 40%-60% lower than that of the ordinary group, the acid value is stable, the moisture content is stable, the air pressure inside the sealed packaging container is in a stable range (98-100kPa) for a long time, and the flavor score is always kept in a good range (8-10 points), effectively extending the high-quality storage period of nuts by 3-6 months.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A constant pressure deoxidizer for preserving nuts and a preparation method thereof, characterized in that: include: S1 Preparation before production; S2 Raw material preparation; S3 production and preparation; S4 quality inspection; The preparation before S1 production includes: the workshop for producing the deoxidizer must be kept clean, the air purification level of the workshop must reach 100,000-level workshop, and it must be cleaned and disinfected regularly. The floor and walls must be wiped with disinfectants (such as hydrogen peroxide solution), and the air must be purified through air filters. The operation site of the preparation workshop must be away from moisture sources and chemical pollution sources to prevent the deoxidizer from getting damp or contaminated and deteriorating prematurely.

2. A constant pressure deoxidizer for nut preservation and a preparation method thereof according to claim 1, characterized in that: The S2 raw material preparation includes: deoxidation main agent: select 40-300 mesh L-sodium ascorbate, D-sodium isoascorbate, and natural organic raw materials. When purchasing, ensure that the supplier provides a strict particle size test report and ingredient safety instructions; Carbon dioxide supplement: Use potassium carbonate powder or small granules with a particle size of ≤0.5mm. Potassium carbonate has a certain hygroscopicity, which is beneficial to maintaining moisture in the material. It generates a certain proportion of carbon dioxide during the reaction. Prepare the material at a mass ratio of 1:2 with the deoxidation main agent and store it properly sealed to prevent water absorption and deliquescence. Synergistic adsorbent: Prepare enzymatic lignin, select high purity (purity ≥ 90%), well-developed pores and secondary activation treatment, which is conducive to the synergistic adsorption of oxygen by the deoxidation agent, and prepare the material at a mass ratio of 1:3 with the deoxidation agent. Before the lignin enters the factory, it is necessary to sample and test the pore structure parameters (specific surface area, pore size distribution, etc.), and only those that meet the standards can be stored in a dry and cool place for future use; Catalyst: Analytical pure copper sulfate crystals are used as a catalyst to accelerate the deoxygenation reaction. The purchase amount is calculated based on the formula and accounts for 0.5%-1% of the total system mass. They should be properly sealed and stored to prevent water absorption, deliquescence, crystallization and weathering that affect the catalytic effect. Balancer: Sodium citrate, as a balancer for deoxygenation reaction, choose food grade sodium citrate, and the purity of food grade sodium citrate is required to be above 99%. The purchase amount is calculated according to the formula and accounts for 0.5%-5% of the total system mass. It should be properly sealed and stored to prevent water absorption and deliquescence; Stabilizer: Modified starch, such as hydroxypropyl starch, corn modified starch, etc., is used as a stabilizer for formula stability. The modified starch should be food grade and the purity should be above 95%. The purchase amount should be calculated based on the formula accounting for 0.5%-5% of the total system mass. It should be properly sealed and stored to prevent moisture absorption and agglomeration. Anti-loosening material: calcium hydroxide particles, particle size 1-3 mm, prepare sufficient raw materials according to the packaging design and the overall ratio of deoxidizer, store in a low humidity environment, and keep the packaging intact; Packaging materials: The outer layer is made of PET composite film, and the tensile strength, oxygen permeability and moisture permeability indicators are inspected before entering the factory; the breathable diaphragm is made of food-grade silicone, and the customized processing ensures that the one-way air holes (aperture 0.1-0.3 mm) are evenly distributed and the density is compliant. A small amount of spare diaphragms are included for random inspection of the air hole quality. The material is soft, breathable and does not shed chips. It is sterilized and dried before use.

3. A constant pressure deoxidizer for nut preservation and a preparation method thereof according to claim 2, characterized in that: The S3 production preparation includes: preparation of deoxygenated mixed material: setting up a stirring device in a nitrogen protection environment (oxygen content <0.1%), first adding weighed L-sodium ascorbate or D-sodium isoascorbate, potassium carbonate and sodium citrate, starting stirring (speed 100-300 rpm), allowing sodium citrate and L-sodium ascorbate or D-sodium isoascorbate, and natural organic raw materials to be fully mixed, and then slowly adding enzymatic lignin and modified starch, and continuously stirring for 10-15 minutes to make it preliminarily mixed; then dissolving copper sulfate crystals with a certain amount of water and spraying them into the system, stirring for 20-30 minutes, and allowing the materials to fully contact to form a uniform deoxygenated active ingredient. Production of anti-loosening bag: evenly load calcium hydroxide particles into food-grade non-woven bags, accurately control the weight of each bag according to the design specifications (such as 2-5 grams), heat seal the bag mouth, and ensure that the sealing strength is moderate to ensure no leakage. Sampling is performed to test the heat seal integrity and anti-loosening bag effect; Assembly and packaging: The three sides of the bag are sealed with heat sealing technology to make an independent deoxidizer product. The heat sealing temperature, pressure and time are optimized through debugging (such as temperature 180-200℃, pressure 0.3-0.5 MPa, time 0.5-1 second) to ensure that the seal is tight and the diaphragm is intact. The anti-loosening bag is placed on one side of the outer packaging and separated by a non-woven fabric partition in the middle; finally, it is quality inspected, packaged and put into storage.

4. A constant pressure deoxidizer for preserving nuts and a preparation method thereof according to claim 3, characterized in that: The S4 quality test includes: randomly extracting the prepared deoxidizer, selecting equal amounts of almonds, cashews, and macadamia samples, and placing them in sealed packaging containers containing the deoxidizer of the present invention, ordinary deoxidizer, and no deoxidizer, respectively, and simulating storage in an environment of 25°C and 60% humidity. Regularly (7 days, 15 days, 30 days, etc.) detect the oxygen concentration and carbon dioxide concentration, peroxide value, acid value, moisture content, and flavor sensory score in the package. Experimental data show that the gas in the product packaging is in an anaerobic state, the peroxide value growth rate of nuts using the deoxidizer of the present invention is 40%-60% lower than that of the ordinary group, the acid value is stable, the moisture content is stable, the air pressure inside the sealed packaging container is in a stable range (98-100kPa) for a long time, and the flavor score is always kept in a good range (8-10 points), effectively extending the high-quality storage period of nuts by 3-6 months.

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