A method for sterilizing, preserving freshness, packaging and storing fresh lilies

Abstract

The present invention discloses a method for sterilizing, preserving and packaging fresh lilies for storage, which includes: after cleaning the newly dug lily bulbs, pre-cooling and disinfection and sterilization are carried out synchronously, then fresh-keeping treatment is carried out using a compound fresh-keeping agent, and then packaging is carried out using inner and outer two-layer packaging bags, and a food-grade desiccant is placed between the inner packaging bag and the outer vacuum packaging bag, and then anti-pressure sleeve bags are used and refrigerated for fresh-keeping. The fresh lily bulbs preserved by the method of the present invention are basically intact, the scales are white, bright, the meat is plump, there is no wilting, and there are few rot spots, which can significantly extend the fresh-keeping time of fresh lilies and effectively improve the fresh-keeping quality of fresh lilies.

Description

Technical Field

[0001] The present invention specifically relates to a method for sterilizing, preserving, packaging and storing fresh lilies, belonging to the technical field of food preservation. Background Art

[0002] Lily is a high-quality vegetable with both edible and medicinal values. Its fleshy bulb is rich in nutritional components and has high medicinal value. It contains various vitamins, amino acids and alkaloids required by the human body, and has the functions of nourishing yin and moistening the lungs, clearing the heart and calming the mind, and anti-cancer. Among them, fresh lilies are especially popular among people. However, fresh lilies are not resistant to storage. If they are not properly packaged and stored after harvesting, problems such as oxidation and discoloration, water loss and softening, browning, and mildew and rot are relatively serious, resulting in a decline in the commerciality and fresh food quality of lilies, and seriously affecting the production and sales of lilies. At present, how to store and preserve fresh lilies and develop safe and effective lily preservation methods has become an urgent problem to be solved in the development process of the lily industry.

[0003] Vacuum packaging is one of the commonly used economical and effective lily preservation methods at present. However, vacuum packaging has the disadvantage that the packaging bag is prone to water accumulation, which in turn causes the lily scales to be soaked in water and quickly rot and deteriorate, greatly shortening the preservation and storage time and reducing the preservation quality and effect. In addition, the widespread occurrence of diseases during the storage of lily bulbs (bulbs) is also the main factor leading to the decline in the commerciality of bulbs. These diseases are usually caused by pathogens invading through the wounds on the bulb tissue and infecting during storage, and finally the pathogens invade the basal plate of the bulb, causing the bulb to rot and lose its value. Controlling the infection of pathogens and regulating the humidity during the storage of lilies is the key to preventing the occurrence of diseases and preventing the bulbs from rotting. As a broad-spectrum, fast, efficient and safe bactericidal and disinfectant for various bacteria and viruses, chlorine dioxide has good effects, low cost and is harmless to the human body, and is often used for disinfection and sterilization in various aspects of people's daily lives. In addition, although the application of chemical preservatives has good antibacterial and preservation effects during the preservation process, there are certain safety risks. Further exploring natural, green, safe preservatives and efficient preservation technology methods is the bottleneck for promoting the improvement of lily storage and preservation effects at present. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method for sterilizing, preserving, packaging and storing fresh lilies to overcome the deficiencies of the prior art.

[0005] To achieve the foregoing invention purpose, the technical solutions adopted by the present invention include:

[0006] A method for sterilizing, preserving, packaging and storing fresh lilies provided by some embodiments of the present invention includes the following steps:

[0007] S1. Clean the newly dug lily bulbs;

[0008] S2. Invert the fresh lily bulbs processed in step S1, pre-cool them at 0 - 8°C, and simultaneously disinfect and sterilize them by chlorine dioxide fumigation method;

[0009] S3. Use a compound preservative to preserve the fresh lily bulbs processed in step S2, and air-dry the moisture in a dark place. The compound preservative contains 1wt% - 2wt% phytic acid, 2wt% - 10wt% extracts of medicinal and edible homologous plants, 0.5wt% - 1.5wt% D-isoascorbic acid sodium, 0.5wt% - 1.5wt% chitosan, and 2wt% - 3wt% citric acid, and the rest consists of water;

[0010] S4. Put the fresh lily bulbs processed in step S3 into an inner packaging bag, seal the inner packaging bag, then put it into an outer vacuum packaging bag, and place at least one or more food-grade desiccant packs between the inner packaging bag and the outer vacuum packaging bag. Then, evacuate and seal the outer vacuum packaging bag to form a double-layer lily packaging structure;

[0011] S5. Set an anti-collision and anti-pressure foam mesh bag on the double-layer lily packaging structure, and then store it at -4°C - 6°C for fresh-keeping.

[0012] Compared with the prior art, the present invention utilizes multiple fresh-keeping designs such as fumigation sterilization, atomized spraying of compound plant-derived preservatives, and double-layer packaging. Through fumigation treatment, it controls the infection of pathogenic bacteria, and improves the fresh-keeping effect through compound preservative treatment and vacuum packaging. Combining the air-permeable and waterproof packaging of the inner bag and the waterproof and moisture-proof characteristics of the desiccant, it realizes the sterilization, fresh-keeping, packaging and storage of fresh lilies. The measure of combining physical fresh-keeping methods and compound preservatives of extracts of medicinal and edible homologous plants significantly reduces the infection of lily bulb pathogens, reduces the water accumulation generated by lily respiration in the vacuum bag, isolates the impregnation of the inner wall moisture of the vacuum packaging bag on the lily bulb, effectively reduces the rotting and mildew of lily scales caused by excessive moisture during storage, significantly extends the fresh-keeping time of fresh lilies, and significantly improves the fresh-keeping quality of fresh lilies. Brief Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for description in the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 It is a cross-sectional view of a double-layer lily packaging structure in Embodiment 1 of the present invention;

[0015] Figure 2It is a top view of a double-layer lily packaging structure in Example 1 of the present invention. DETAILED DESCRIPTION

[0016] In view of the defects of the prior art, the inventors of this case have proposed the technical solution of the present invention after long-term research and extensive practice, namely, a method for sterilizing, preserving, packaging and storing fresh lilies, so as to solve the problems of the existing fresh lily preservation and storage methods, such as short preservation time, widespread occurrence of diseases, and serious rotting and mildew of lilies caused by excessive water accumulation during the vacuum preservation process.

[0017] The technical solution of the present invention will be described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0018] Some embodiments of the present invention provide a method for sterilizing, packaging and storing fresh lilies, comprising the following steps:

[0019] S1. Clean the newly dug lily bulbs;

[0020] S2, placing the fresh lily bulbs treated in step S1 upside down, precooling at 0-8°C, and sterilizing them by fumigation with chlorine dioxide;

[0021] S3, using a composite preservative to preserve the fresh lily bulbs treated in step S2, and drying them in a dark place, wherein the composite preservative comprises 1wt%-2wt% phytic acid, 2wt%-10wt% medicinal and edible plant extracts, 0.5wt%-1.5wt% sodium D-isoascorbate, 0.5wt%-1.5wt% chitosan and 2wt%-3wt% citric acid, and the rest comprises water;

[0022] S4, putting the fresh lily bulbs processed in step S3 into an inner packaging bag, and then sealing the inner packaging bag and putting it into an outer vacuum packaging bag, and placing at least one or more food-grade desiccant bags between the inner packaging bag and the outer vacuum packaging bag, and then vacuum-sealing the outer vacuum packaging bag to form a double-layer lily packaging structure;

[0023] S5. Covering the double-layer lily packaging structure with an anti-collision and anti-pressure foam mesh bag, and then storing it at -4°C to 6°C for freshness preservation.

[0024] In one embodiment, step S1 specifically includes: first removing the excess roots on the newly dug lily bulbs, leaving the roots with a length of 0.1 cm-1.0 cm, cleaning the soil on the lily bulbs, and removing the lily scales with wounds.

[0025] In one embodiment, step S2 specifically includes: placing the fresh lily bulbs processed in step S1 in a single layer or multiple layers in an inverted manner in a perforated turnover box, and then synchronously performing the pre-cooling and disinfection and sterilization.

[0026] In some cases, ozone can also be used instead of chlorine dioxide for disinfection and sterilization in step S2.

[0027] Among them, by placing the lily bulbs in an inverted manner, it is possible to prevent the lily scales from being crushed and falling off. And the placement height of the turnover box is preferably greater than 0.5 m.

[0028] Among them, by synchronously performing chlorine dioxide fumigation and pre-cooling, not only time and economic costs are saved, but also damage to the lily bulbs (bulbs) caused by multiple operations such as sorting and handling can be effectively avoided. In one embodiment, step S3 specifically includes: using the compound preservative to perform a preservation treatment on the fresh lily bulbs processed in step S2 by spraying or soaking, and drying the moisture in a dark place indoors.

[0029] More preferably, a nano-spray device can be used to spray the compound preservative on the surface of the fresh lily bulbs processed in step S2, so as to achieve the above-mentioned preservation treatment. By using a nano-spray gun, nano-sprayer, etc., the compound preservative can be atomized into nano-scale fine particles and sprayed on the lily bulbs, which not only ensures the homogeneity and preservation effect of spraying the compound preservative, but also avoids the disadvantages of excessive moisture that cannot be dried in time by the soaking method, and the excess moisture is likely to accumulate in the gaps between the inner scales of the lily and is difficult to discharge, thus causing the bulbs to rot from the inner scales.

[0030] Among them, the amount of the compound preservative sprayed on the surface of the lily bulbs only needs to completely cover the surface of the lily bulbs.

[0031] In one embodiment, the preparation method of the medicine and food homologous plant extract includes: soaking the medicine and food homologous plants in water for 1 h - 1.5 h, where the volume ratio of the medicine and food homologous plants to water is 1∶8 - 10, then decocting more than 2 times, each time for 1 - 2 hours, combining the clear liquid obtained after multiple decoctions, and filtering and concentrating to 1 / 3 of the volume before concentration.

[0032] Among them, the medicine and food homologous plants include one or more combinations of lily, hawthorn, honeysuckle, etc., and are not limited thereto. These medicine and food homologous plants are rich in active ingredients such as organic acids, alkaloids and flavonoids. Spraying with a compound preservative containing these plant extracts can form a thin film on the surface of the bulbs, which has the functions of antibacterial, bactericidal and anti-pathogenic microorganisms, can also prevent oxidation and reduce the risk of red discoloration and browning of lily scales, and also has medicinal and edible properties, and has good safety.

[0033] The lilies used to make the extracts of the plants with both medicinal and edible properties can come from the stem bulblets and outer scales discarded during the harvest of fresh lilies, which can achieve the recycling of resources and is more environmentally friendly and safe.

[0034] Among them, the water used to prepare the compound preservative can be sterilized water, deionized water, or boiled and cooled tap water, etc., and is not limited thereto.

[0035] In one embodiment, the compound preservative is composed of phytic acid, extracts of plants with both medicinal and edible properties, D-isoascorbic acid sodium, chitosan, citric acid, and water. By spraying the compound preservative on the surface of fresh lily bulbs, the formed breathable protective layer can not only achieve functions such as antibacterial and sterilization, but also will not inhibit the respiration of lilies, reduce the water loss of lilies, and can be simply, quickly, and thoroughly removed by means such as water washing, avoiding residue during consumption and affecting health and taste.

[0036] In step S3 of the present invention, after completing the preservation treatment, it is preferably to invert the lily bulbs and dry the moisture in a dark place. This is because there is a risk of the lily scales turning red, discoloring, or even browning under the influence of light, and the lily bulbs grow by the aggregation of multiple layers of scales, and moisture is likely to accumulate in the gaps between the scales, easily causing the inner scales to rot. Inverting and drying in the dark can effectively reduce the discoloration during the lily treatment process and promote the discharge of excess moisture in the scale gaps.

[0037] In one embodiment, step S4 specifically includes: when putting the sealed inner packaging bag into the outer vacuum packaging bag, placing a plurality of the food-grade desiccant bags at least at different positions between the inner packaging bag and the outer vacuum packaging bag.

[0038] In one embodiment, the inner packaging bag has a water-blocking and breathable structure and is at least selected from plant fiber bags, artificial fiber bags, non-woven bags, or paper bags, etc., and is not limited thereto.

[0039] Furthermore, the inner packaging bag preferably has properties such as antibacterial, moisture-proof, breathable and waterproof, and the pore diameter of the opening is 500 - 700 times larger than the water vapor molecule and about 8000 - 10000 times smaller than the water droplet, so that the water vapor generated by the respiration of lilies can be discharged through the inner bag, while external water droplets cannot enter, effectively playing a role of water isolation and waterproofing, and avoiding the rotting and mildew caused by the accumulation of moisture generated by the respiration of lilies on the scales.

[0040] In one embodiment, an opening is provided at the bottom edge of the inner packaging bag, and at least one food-grade desiccant bag is also provided at or adjacent to the opening to better absorb the water vapor generated by the respiration of lily bulbs.

[0041] More preferably, the upper opening of the bottom of the inner packaging bag can be sealed by a drawstring, and an inclined opening with a diameter of about 2 cm is cut or reserved at a corner of the bottom of the inner packaging bag, which not only facilitates checking whether there is water accumulation in the inner bag, but also facilitates the timely discharge of excessive water in the bag.

[0042] The outer vacuum packaging bag can be a transparent or semi-transparent packaging bag made of PE / PA, PE+PA, or PE+PET materials.

[0043] In one embodiment, at least part of the outer vacuum packaging bag is transparent or semi-transparent.

[0044] In one embodiment, step S5 specifically includes: coding the double-layer lily packaging structure with the anti-collision and anti-pressure foam mesh bag sleeved on the surface into an open container, and avoiding mutual extrusion of multiple double-layer lily packaging structures, and then storing them in a fresh-keeping storage at -4°C - 6°C.

[0045] The fresh lily sterilization, fresh-keeping packaging and storage method provided by the present invention is a comprehensive fresh-keeping storage method, which is simple and convenient to operate, has a low treatment cost, and is safe and non-toxic. It has the functions of inhibiting germs, controlling water production, preventing oxidation and effectively keeping fresh. The fumigation treatment effectively controls the infection of pathogenic bacteria, the compound fresh-keeping agent treatment inhibits bacteria, keeps fresh and prevents oxidation, the inner bag is breathable and waterproof packaging and the desiccant is waterproof and moisture-proof, the vacuum packaging isolates water and air, and the double-layer packaging and anti-pressure sleeve bag reduce the mechanical damage of the external force to the lilies in the packaging to a certain extent. The lily bulbs stored by the method of the present invention have a long storage time, the bulbs are basically intact, the scales are white, bright and non-discolored, the meat is plump, there is no wilting and few rot spots, the fresh-keeping quality is high, and the fresh-keeping effect is good.

[0046] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and several preferred embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present invention.

[0047] Unless otherwise specified, the experimental methods used in the following embodiments are all conventional methods, and the materials, reagents, etc. used can be obtained from commercial channels.

[0048] The fresh lily sterilization, fresh-keeping packaging and storage methods provided in Embodiments 1 - 5 all include the following steps:

[0049] (1) Cleaning: First remove the excess roots on the newly dug lily bulbs, leaving a length of 0.1-1.0 cm, and clean the soil on the lily bulbs, and remove the lily scales with wounds to reduce the bacterial contamination caused by wounds and soil.

[0050] (2) Precooling - Fumigation Sterilization: Place the cleaned fresh lily bulbs upside down in a single or double layer in a perforated turnover box and precool them in a well-sealed cold storage warehouse at around 0-8°C. At the same time, fumigate them with 8-12wt% chlorine dioxide solution for 12 hours.

[0051] (3) Fresh-keeping treatment: After the pre-cooling and fumigation sterilization is completed, use a nano spray gun to spray the compound preservative on the surface of the bulbs. Stop spraying when the compound preservative completely covers the surface of the lily bulbs. Then, turn the lily bulbs upside down with the roots facing upwards and wait for the surface moisture to dry in a dark place.

[0052] (4) Packaging: Place the lily bulbs neatly into the inner packaging bag after preservation, seal it and place it into the outer vacuum packaging bag. The inner packaging bag is a commercially available waterproof and breathable plant fiber bag, or it can be replaced with other commercially available artificial fiber bags, non-woven bags or paper bags with antibacterial, moisture-proof, breathable and waterproof properties. The top of the inner packaging bag is sealed with a thin rope, and a 2 cm slant is cut at one corner of the bottom of the inner packaging bag. The outer vacuum packaging bag can be a commercially available transparent packaging bag made of PE / PA material, or a commercially available transparent or translucent packaging bag made of PE+PA or PE+PET material.

[0053] (5) Desiccant placement: An independently packaged food-grade desiccant, i.e., a food-grade desiccant bag, is placed between the inner packaging bag and the outer vacuum packaging bag. Preferably, there are multiple food-grade desiccant bags. The specific number of desiccant bags is adjusted according to the weight of the lily bulbs. The desiccant bags are placed at different positions to ensure that they can absorb moisture from different parts of the bulbs. One of the food-grade desiccant bags is placed at or near the cut at the bottom of the inner packaging bag.

[0054] (6) Outer bag packaging: Place the double-layer lily packaging structure prepared in step (5) on a vacuum machine, evacuate and seal the outer vacuum packaging bag, and control the vacuum packaging time to be 30-90 seconds. The vacuum-sealed double-layer lily packaging structure is as follows: Figure 1 - Figure 2 1 is the inner packaging bag, 2 is the outer vacuum packaging bag, 3 is the food grade desiccant bag, and 4 is the fresh lily bulb.

[0055] (7) Anti-pressure bagging: Add an anti-collision and anti-pressure foam mesh bag to the vacuum-sealed double-layer lily packaging structure.

[0056] (8) Refrigeration and fresh-keeping: Stack the double-layer lily packaging structure with the pressure-proof bag into the perforated basket or box to avoid extrusion, and then store it in a cold storage at -4°C - 6°C for fresh-keeping.

[0057] Among them, the numbers of the compound fresh-keeping agents used in the above Examples 1-5 are numbered from No. 1 to No. 5 respectively, and their component ratios are shown in Table 2 below.

[0058] Table 2 Formulas of Compound Fresh-keeping Agents No. 1-5 Used in Examples 1-5

[0059]

[0060] Among them, the preparation method of the extracts of the medicine and food homologous plants contained in Compound Fresh-keeping Agents No. 1-4 includes: taking medicine and food homologous plants such as lily, hawthorn, honeysuckle, etc., soaking them in 8-10 times the volume of water for 1-1.5 h, then decocting twice, each time for 1-2 h, combining the two clear liquids, and filtering and concentrating to 1 / 3 of the original volume. The lily used mainly comes from the stem-born bulblets and outer scales discarded during the harvesting of fresh lilies.

[0061] Table 3 Raw Material Ratios and Process Conditions of Extracts of Medicine and Food Homologous Plants in Compound Fresh-keeping Agents No. 1-4

[0062]

[0063]

[0064] Example 6 A method for sterilizing, fresh-keeping, packaging and storing fresh lilies provided in this example is basically the same as that in Example 1, except that in step (3), the whole lily bulb is immersed in the compound fresh-keeping agent and then taken out, and then the lily bulb is inverted with the root upwards, and the surface moisture is allowed to dry in the dark.

[0065] Comparative Example 1 A method for sterilizing, fresh-keeping, packaging and storing fresh lilies provided in this comparative example includes: After cleaning the lily bulbs according to the operation in step (1) of Example 1, directly placing them in a cold storage at -4°C - 6°C for storage.

[0066] Comparative Example 2 A method for sterilizing, fresh-keeping, packaging and storing fresh lilies provided in this example includes: After cleaning the lily bulbs according to the operation in step (1) of Example 1, immediately placing them in the same outer vacuum packaging bag as in Example 1, then evacuating and sealing, and then immediately placing them in a cold storage at -4°C - 6°C for storage.

[0067] Comparative Example 3 A method for sterilizing, fresh-keeping, packaging and storing fresh lilies provided in this comparative example is basically the same as that in Example 1, except that in step (2), the operation of ozone fumigation sterilization is adopted.

[0068] Comparative Example 4 A method for sterilizing, preserving, packaging and storing fresh lilies provided in this comparative example is basically the same as that in Example 1, except that: in step (2), pre-cooling is carried out first, and then the fumigation sterilization operation is performed.

[0069] Table 3 Preservation effects of fresh lilies in Examples 1, 5-6 and Comparative Examples 1-4 during storage for 3-5 months

[0070]

[0071]

[0072] Note: Mean ± standard error. The rotting levels in the table are as follows: intact (level 0); rotting less than 5% (level 1); rotting 5-20% (level 2); rotting greater than 20% (level 3). Rotting index = (rotting level × number of lily bulbs at this level) / highest level × total number of lilies.

[0073] Comparative Example 5 A method for sterilizing, preserving, packaging and storing fresh lilies provided in this comparative example is basically the same as that in Example 1, except that: only the pre-cooling operation is carried out in step (2), chlorine dioxide fumigation is not performed, and instead chlorine dioxide tablets are placed in step (5) for sterilization. The preservation effect of this comparative example is not good, and the rotting of fresh lilies is higher than level 3 after 3 months of storage, so no relevant experimental data are provided.

[0074] In addition, the inventor of this case also referred to the foregoing examples and conducted tests with other raw materials, process operations and process conditions described in this specification, and all obtained relatively ideal results.

[0075] It should be understood that the technical solution of the present invention is not limited to the limitations of the above specific implementation cases. Any technical deformation made according to the technical solution of the present invention without departing from the spirit of the present invention and the scope protected by the claims falls within the protection scope of the present invention.

Claims

1. A method for sterilizing, preserving freshness, packaging and storing fresh lilies, characterized in that, The following steps are involved: S1. Remove the excess roots on the newly dug lily bulbs, leaving the roots with a length of 0.1 cm to 1.0 cm, clean the soil on the lily bulbs, and remove the lily scales with wounds; S2, placing the fresh lily bulbs treated in step S1 upside down, precooling at 0-8°C, and sterilizing them by fumigation with chlorine dioxide; S3, using a nano spray device to spray a composite preservative on the surface of the fresh lily bulbs treated in step S2 to preserve the fresh lily bulbs, and then drying the water in a dark place, wherein the composite preservative comprises 1wt%-2wt% phytic acid, 2wt%-10wt% medicinal and edible plant extracts, 0.5wt%-1.5wt% sodium D-isoascorbate, 0.5wt%-1.5wt% chitosan and 2wt%-3wt% citric acid, and the rest comprises water; S4, putting the fresh lily bulbs processed in step S3 into an inner packaging bag, and then sealing the inner packaging bag and putting it into an outer vacuum packaging bag, and placing a plurality of food-grade desiccant bags at different positions at least between the inner packaging bag and the outer vacuum packaging bag, and then vacuum-sealing the outer vacuum packaging bag to form a double-layer lily packaging structure; S5, putting an anti-collision and anti-pressure foam mesh bag on the double-layer lily packaging structure, and then storing it at -4°C-6°C for freshness preservation; The preparation method of the edible and medicinal plant extract comprises: soaking the edible and medicinal plant in water for 1 hour to 1.5 hours, wherein the volume ratio of the edible and medicinal plant to water is 1:8-10, then decocting for more than 2 times, each time for 1-2 hours, combining the clear liquids obtained after multiple decoctions, filtering, and concentrating to 1 / 3 of the volume before concentration; the edible and medicinal plant comprises a combination of one or more of lily, hawthorn, and honeysuckle.

2. The fresh lily sterilization, preservation, packaging and storage method according to claim 1, characterized in that, Step S2 specifically includes: placing the fresh lily bulbs processed in step S1 in a single layer or multiple layers upside down in a perforated turnover box, and then simultaneously performing the precooling and disinfection and sterilization.

3. The fresh lily sterilization, preservation, packaging and storage method according to claim 1, characterized in that The inner packaging bag has a water-blocking and air-permeable structure and is selected from plant fiber bags, artificial fiber bags, non-woven bags or paper bags.

4. The method for sterilizing, preserving freshness and storing fresh lilies according to claim 1, characterized in that, An opening is provided at the bottom edge of the inner packaging bag, and at least one food-grade desiccant bag is arranged at or adjacent to the opening.

5. The fresh lily sterilization, preservation and packaging storage method according to claim 1, characterized in that, The material of the outer vacuum packaging bag includes any one or more combinations of PE, PA, and PET.

6. The fresh lily sterilization, preservation, packaging and storage method according to claim 1, characterized in that The outer vacuum packaging bag is at least partially transparent or translucent.

7. The fresh lily sterilization, preservation, packaging and storage method according to claim 1, characterized in that, Step S5 specifically includes: stacking the double-layer lily packaging structure with the anti-collision and anti-pressure foam mesh bag on the surface into a perforated container to prevent multiple double-layer lily packaging structures from squeezing each other, and then storing at -4°C-6°C for freshness preservation.

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