A kind of storage method of maltose syrup and application thereof

Abstract

The present invention relates to a storage method for maltose syrup and its application, belonging to the technical field of biomaterial storage. The storage method comprises freezing the maltose syrup, laying a diaphragm, and then pouring a sealing glue slurry I and a sealing glue slurry II in sequence, wherein the sealing glue slurry I is prepared from hemp seed extract, basil leaf extract, pullulan, chitosan and gelatin, etc.; the sealing glue slurry II is prepared from hemp seed extract, basil leaf extract, diglyceride oil, gelatin and aloe vera gel, etc. After the sealing glue slurry I and the sealing glue slurry II are formed into films, the sealing performance can be well improved, and the sealing performance has a good antibacterial effect, which greatly prolongs the storage shelf life of the maltose syrup, and the maltose syrup is safe and non-toxic. Even in the case of repeated long-term power outages, the storage stability can be maintained well, and the storage loss caused by daily power outages or maintenance power outages can be effectively avoided, and the inventory can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of biological material storage, and in particular relates to a storage method of maltose syrup and application thereof. Background Art

[0002] Maltose syrup is a liquid sweetener made from starch through liquefaction, saccharification, decolorization, filtration, refining and concentration. It has a mild and moderate sweetness and is widely used in the fields of medicine, food and industrial products.

[0003] Maltose syrup is rich in carbohydrates, which can provide sufficient energy and nutrients for the growth and metabolism of microorganisms, and promote the growth and reproduction of microorganisms. Therefore, maltose syrup is loved by most microorganisms. The storage technology of maltose syrup is a crucial link. If maltose syrup is contaminated by microorganisms, it may cause the subsequent prepared food, medicine, etc. to deteriorate and corrupt more easily, affecting their quality and safety. In addition, improper storage of maltose syrup, deterioration, and waste will cause economic losses. Therefore, the stable storage of maltose syrup has always been a technology that needs to be improved.

[0004] At present, the common maltose syrup storage technologies mainly include the following:

[0005] 1. Sealed storage at room temperature:

[0006] Under normal temperature conditions, maltose syrup is sealed and stored in stainless steel or plastic containers. This storage method is simple and easy to operate, and has low cost, but it has some obvious disadvantages. At room temperature, maltose syrup is easily contaminated by microorganisms, causing it to deteriorate and become sour. In addition, the seal is prone to leakage, infiltration of air, and maltose syrup is easy to absorb moisture, which affects its concentration and quality.

[0007] 2. Low temperature storage:

[0008] Placing maltose syrup in a low-temperature environment, such as a cold storage or refrigerator, can effectively extend its shelf life. Low temperature can inhibit the growth and reproduction of microorganisms and slow down the speed of chemical reactions, but long-term storage will inevitably have the risk of deterioration. For example, in the event of a power outage, low-temperature storage will fail.

[0009] 3. Vacuum storage:

[0010] By vacuuming, the oxygen content in the container is reduced, thereby reducing the oxidation rate of the maltose syrup. This storage method can better maintain the quality of maltose syrup, but the investment in vacuum equipment is relatively large.

[0011] 4. Add preservatives for storage:

[0012] Adding preservatives such as sodium benzoate and potassium sorbate to maltose syrup can inhibit the growth of microorganisms. However, if preservatives are added to maltose syrup in large amounts, they may cause potential harm to human health, while if they are added in small amounts, they may not have a good long-term preservative effect.

[0013] In summary, although the existing maltose syrup storage technology can guarantee the quality and shelf life of maltose syrup to a certain extent, they all have their own shortcomings. Therefore, it is necessary to develop a more efficient, safe and economical maltose syrup storage technology to meet the long-term stable storage of maltose syrup and ensure product quality. Summary of the invention

[0014] The above-mentioned various storage methods for existing maltose syrup all have their own shortcomings and cannot meet the needs of efficient, safe and long-term stable storage of maltose syrup. The present invention provides a storage method and application of maltose syrup. After freezing the maltose syrup, a diaphragm is laid, and then the sealing glue slurry I and the sealing glue slurry II are poured in sequence. After the film is formed, the sealing performance can be well improved, and the antibacterial effect is good, which greatly prolongs the storage shelf life of the maltose syrup, and it is safe and non-toxic. The specific technical scheme is as follows:

[0015] A storage method for maltose syrup, the storage method comprising the following steps:

[0016] S1: placing the maltose syrup in a storage container and freezing it to a solidified state;

[0017] S2: Lay a layer of diaphragm on the surface of the frozen and solidified maltose syrup;

[0018] S3: According to the mass ratio, hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = (0.5-2): (1-4): (0.1-0.3): (2-5): (60-80): (360-480), boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 60° C. to 70° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0019] S4: According to the mass ratio, hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = (0.5-2): (1-4): (5-8): (60-80): (15-20): (600-800), boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60° C. to 70° C. until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0020] S5: pouring the sealing slurry I onto the surface of the diaphragm, and obtaining a solid sealing layer after the sealing slurry I solidifies; then pouring the sealing slurry II onto the surface of the solid sealing layer, and obtaining a semi-solid sealing layer after condensation; and continuing the frozen storage.

[0021] In S1 of the above storage method, the freezing temperature is -18°C to -25°C.

[0022] In S1 of the above storage method, the maltose syrup is sterilized and the storage container is sterilized.

[0023] In S2 of the above storage method, the thickness of the diaphragm is 0.05 mm to 0.5 mm; the diaphragm is a food-grade oil paper film or a food-grade plastic film and has water-proof properties.

[0024] In S2 of the above storage method, the diaphragm is sterilized.

[0025] In the above storage method, the preparation method of the hemp seed extract is: crushing the hemp seeds, pressing to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 5 to 6 times the mass of the hemp seed residue to obtain an extract, concentrating and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0026] In the above storage method, the preparation method of the basil leaf extract is as follows: crush the basil leaves, add water 10 to 12 times the mass of the basil leaves, boil until the water evaporates to 20% to 30% of the volume, filter, and take the filtrate to obtain the basil leaf extract.

[0027] In S5 of the above storage method, the solid-sealed layer is in a solid state; and the semi-solid-sealed layer is in a semi-solid state.

[0028] In S5 of the above storage method, the thickness of the sealing layer is 2 mm to 5 mm; the thickness of the semi-sealing layer is 1 mm to 3 mm.

[0029] The maltose syrup stored by the above-mentioned storage method is used as an additive for medicines, foods and industrial products; before using the maltose syrup, the storage container is placed at room temperature, the semi-solidified layer and the solidified layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0030] The storage method and application of maltose syrup provided by the present invention have the following beneficial effects compared with the prior art:

[0031] 1. The invention is designed to lay a layer of diaphragm on the surface of the frozen and solidified maltose syrup, which has water-proof properties. When the sealing slurry I is added, the maltose syrup and the sealing slurry I can be well isolated, and the miscibility is reduced or eliminated, thereby reducing the contamination of the maltose syrup; and after a power outage, when the maltose syrup melts, the diaphragm can also well isolate the maltose syrup from penetrating into the sealing layer, thereby reducing the contamination of the maltose syrup.

[0032] 2. Invention Design Hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water are boiled to prepare glue sealing slurry I, which forms a solid sealing layer after pouring and sealing, which can well seal maltose syrup. Hemp seed extract and basil leaf extract have good antibacterial effect, prevent bacteria from invading, and extend the shelf life of maltose syrup. Pullulan and chitosan have good film-forming properties, improve the film-forming sealing effect, and extend the shelf life of maltose syrup.

[0033] 3. The invention designs hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water to make a slurry to prepare a sealant slurry II, which forms a semi-solid semi-solid sealing layer after pouring and sealing; it can further enhance the antibacterial and sealing properties. Among them, diglyceride oil has the effect of inhibiting Escherichia coli, and aloe vera gel also has antibacterial and synergistic properties, but a small amount of aloe vera gel has little effect, and a large amount of aloe vera gel will affect the coagulation of the material. Therefore, the sealant slurry II after adding a large amount of aloe vera gel is not suitable for direct pouring on the surface of maltose syrup, so a double-layer pouring seal is designed, with a solid sealing layer in the middle; and it is unexpectedly found that the double-layer seal can greatly extend the shelf life of maltose syrup; even in the case of repeated long-term power outages, it can maintain good storage stability, and can effectively avoid storage losses caused by daily power outages or maintenance power outages, and ensure inventory.

[0034] 4. The semi-solid seal layer has a melting and moisturizing effect, which prevents the solid seal layer from cracking. Adding aloe vera gel after boiling the gel can maximize the water-locking and moisturizing properties of the aloe vera gel.

[0035] 5. Adding pullulan, chitosan and diglyceride oil has a certain effect in delaying deterioration.

[0036] 6. Hemp seed extract and basil leaf extract have good antibacterial properties. When used together, they can delay deterioration to a certain extent.

[0037] In summary, the storage method of the present invention can significantly extend the storage stability of maltose syrup, prevent it from deteriorating for a long time, and maintain good storage stability even in the case of repeated long-term power outages, effectively avoid storage losses caused by daily power outages or maintenance power outages, and ensure inventory. The storage method of the present invention is safe and non-toxic, and even if the maltose syrup comes into contact with the glue sealing slurry I and the glue sealing slurry II, it will not affect the use. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with specific implementation cases, but the present invention is not limited to these embodiments.

[0039] Example 1

[0040] A storage method for maltose syrup, the storage method comprising the following steps:

[0041] S1: placing the sterilized maltose syrup in a sterilized storage container and freezing it at -20°C to achieve a solidified state;

[0042] S2: Lay a 0.3 mm thick membrane on the surface of the frozen and solidified maltose syrup. The membrane is a sterilized food-grade plastic film with water-proof properties.

[0043] S3: According to the mass ratio of hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = 1.2:3:0.2:3:70:420, boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 65° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0044] S4: According to the mass ratio of hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = 1.2:2:6:70:18:700, boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 65° C. until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0045] S5: Pour the sealing slurry I onto the surface of the diaphragm, and after the sealing slurry I solidifies, a 3 mm thick sealing layer is obtained, which is a solid state; then pour the sealing slurry II onto the surface of the sealing layer, and after condensation, a 2 mm thick semi-solid sealing layer is obtained, which is a semi-solid state; continue to store in a -20°C freezer.

[0046] The preparation method of the hemp seed extract of the present embodiment is as follows: crushing and squeezing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 5.5 times the mass of the hemp seed residue to obtain an extract, concentrating, and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0047] The preparation method of the basil leaf extract of this embodiment is as follows: crush the basil leaves, add water 11 times the mass of the basil leaves, boil until the water evaporates to 25% volume, filter, and take the filtrate to obtain the basil leaf extract.

[0048] The maltose syrup stored in this embodiment is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-sealed layer and the sealed layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0049] Example 2

[0050] A storage method for maltose syrup, the storage method comprising the following steps:

[0051] S1: placing the sterilized maltose syrup in a sterilized storage container and freezing it at -18°C to achieve a solidified state;

[0052] S2: Lay a 0.05 mm thick membrane on the surface of the frozen and solidified maltose syrup. The membrane is a sterilized food-grade oil paper membrane with water-proof properties.

[0053] S3: According to the mass ratio of hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = 0.5:1:0.1:2:60:360, boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 60° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0054] S4: According to the mass ratio of hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = 0.5:1:5:60:15:600, boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60° C. to 70° C. until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0055] S5: Pour the sealing slurry I on the surface of the diaphragm, and after the sealing slurry I solidifies, a 2 mm thick solid sealing layer is obtained, which is a solid state; then pour the sealing slurry II on the surface of the solid sealing layer, and after condensation, a 1 mm thick semi-solid sealing layer is obtained, which is a semi-solid state; continue to store in a -18°C freezer.

[0056] The preparation method of the hemp seed extract of the present embodiment is as follows: crushing and squeezing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 5 times the mass of the hemp seed residue to obtain an extract, concentrating, and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0057] The preparation method of the basil leaf extract of this embodiment is as follows: crush the basil leaves, add water 10 times the mass of the basil leaves, boil until the water evaporates to 20% volume, filter, and take the filtrate to obtain the basil leaf extract.

[0058] The maltose syrup stored in this embodiment is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-sealed layer and the sealed layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0059] Example 3

[0060] A storage method for maltose syrup, the storage method comprising the following steps:

[0061] S1: placing the sterilized maltose syrup in a sterilized storage container and freezing it at -18°C to achieve a solidified state;

[0062] S2: Lay a 0.5 mm thick membrane on the surface of the frozen and solidified maltose syrup. The membrane is a sterilized food-grade oil paper membrane with water-proof properties.

[0063] S3: According to the mass ratio of hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = 0.5:4:0.1:5:60:360, boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 70° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0064] S4: According to the mass ratio of hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = 0.5:4:5:80:15:800, boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60° C. to 70° C. until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0065] S5: Pour the sealing slurry I onto the surface of the diaphragm, and after the sealing slurry I solidifies, a 2 mm thick sealing layer is obtained, which is a solid state; then pour the sealing slurry II onto the surface of the sealing layer, and after condensation, a 3 mm thick semi-solid sealing layer is obtained, which is a semi-solid state; continue to store in a -18°C freezer.

[0066] The preparation method of the hemp seed extract of the present embodiment is as follows: crushing and squeezing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 5 times the mass of the hemp seed residue to obtain an extract, concentrating, and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0067] The preparation method of the basil leaf extract of this embodiment is as follows: crush the basil leaves, add water 12 times the mass of the basil leaves, boil until the water evaporates to 20% volume, filter, and take the filtrate to obtain the basil leaf extract.

[0068] The maltose syrup stored in this embodiment is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-sealed layer and the sealed layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0069] Example 4

[0070] A storage method for maltose syrup, the storage method comprising the following steps:

[0071] S1: placing the sterilized maltose syrup in a sterilized storage container and freezing it at -25°C to achieve a solidified state;

[0072] S2: Lay a 0.5 mm thick membrane on the surface of the frozen and solidified maltose syrup. The membrane is a sterilized food-grade plastic film with water-proof properties.

[0073] S3: According to the mass ratio of hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = 2:4:0.3:5:80:480, boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 70° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0074] S4: According to the mass ratio of hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = 2:4:8:80:20:800, boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60°C to 70°C until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0075] S5: Pour the sealing slurry I onto the surface of the diaphragm, and after the sealing slurry I solidifies, a 5 mm thick sealing layer is obtained, which is a solid state; then pour the sealing slurry II onto the surface of the sealing layer, and after condensation, a 3 mm thick semi-solid sealing layer is obtained, which is a semi-solid state; continue to store in a -25°C freezer.

[0076] The preparation method of the hemp seed extract of the present embodiment is as follows: crushing and squeezing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 6 times the mass of the hemp seed residue to obtain an extract, concentrating, and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0077] The preparation method of the basil leaf extract of this embodiment is as follows: crush the basil leaves, add water 12 times the mass of the basil leaves, boil until the water evaporates to 30% of the volume, filter, and take the filtrate to obtain the basil leaf extract.

[0078] The maltose syrup stored in this embodiment is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-sealed layer and the sealed layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0079] Example 5

[0080] A storage method for maltose syrup, the storage method comprising the following steps:

[0081] S1: placing the sterilized maltose syrup in a sterilized storage container and freezing it at -25°C to achieve a solidified state;

[0082] S2: Lay a 0.05 mm thick membrane on the surface of the frozen and solidified maltose syrup. The membrane is a sterilized food-grade plastic film with water-proof properties.

[0083] S3: According to the mass ratio of hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = 2:1:0.3:2:80:480, boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 60° C. until the gelatin melts into a slurry to obtain a sealing slurry I;

[0084] S4: According to the mass ratio of hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = 2:1:8:60:20:600, boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60°C to 70°C until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II;

[0085] S5: pour the sealing slurry I on the surface of the diaphragm, and after the sealing slurry I solidifies, a 5 mm thick solid sealing layer is obtained, which is a solid state; then pour the sealing slurry II on the surface of the solid sealing layer, and after condensation, a 1 mm thick semi-solid sealing layer is obtained, which is a semi-solid state; continue to store in a -25°C freezer.

[0086] The preparation method of the hemp seed extract of the present embodiment is as follows: crushing and squeezing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol 6 times the mass of the hemp seed residue to obtain an extract, concentrating, and drying to obtain a hemp seed residue extract; mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

[0087] The preparation method of the basil leaf extract of this embodiment is as follows: crush the basil leaves, add water 10 times the mass of the basil leaves, boil until the water evaporates to 30% volume, filter, and take the filtrate to obtain the basil leaf extract.

[0088] The maltose syrup stored in this embodiment is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-sealed layer and the sealed layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

[0089] Comparative Example 1

[0090] The sterilized maltose syrup is placed in a sterilized storage container and frozen at -20°C to reach a solidified state; no diaphragm is laid, and no glue sealing slurry I and glue sealing slurry II are added.

[0091] Comparative Example 2

[0092] The sterilized maltose syrup is placed in a sterilized storage container and frozen at -20°C to reach a solidified state; a 0.3 mm thick diaphragm is laid on the surface of the frozen solidified maltose syrup, and the diaphragm is a sterilized food-grade plastic film with water-proof properties; no glue sealing slurry I and glue sealing slurry II are added.

[0093] Comparative Example 3

[0094] The sterilized maltose syrup is placed in a sterilized storage container and frozen at -20°C to achieve a solidified state; a 0.3 mm thick diaphragm is laid on the surface of the frozen and solidified maltose syrup, and the diaphragm is a sterilized food-grade plastic film with water-proof properties; the glue seal slurry I is poured and sealed on the surface of the diaphragm, and after the glue seal slurry I solidifies, a 3 mm thick solid sealing layer is obtained, which is in a solid state; and the frozen storage is continued. No glue seal slurry II is added. Other steps and parameters are the same as in Example 1.

[0095] Comparative Example 4

[0096] No pullulan or chitosan is added to the sealant slurry I; no diglyceride oil is added to the sealant slurry II. Other steps and parameters are the same as those in Example 1.

[0097] Comparative Example 5

[0098] No hemp seed extract or basil leaf extract is added to the sealant slurry I and sealant slurry II. Other steps and parameters are the same as those in Example 1.

[0099] The storage experiments were carried out on 5 kg of maltose syrup by the methods of the above embodiments and comparative examples, with power off every 3 days for 6 hours, followed by refrozen; 9 parallel samples were prepared for each maltose syrup, divided into group A, group B, and group C, with 3 parallel samples in each group, which were stored continuously for 3 months (group A), 6 months (group B), and 9 months (group C), respectively. After the storage, the deterioration of the maltose syrup was observed, and the results are shown in Table 1 below.

[0100] Table 1 Maltose syrup storage deterioration

[0101]

[0102]

[0103] Deterioration phenomenon:

[0104] (1) Odor change: The maltose syrup changes from a light sweetness and fragrance to a sour and unpleasant odor.

[0105] (2) Appearance changes: The color deepens and becomes turbid, with precipitation and flocs produced, and stratification occurs.

[0106] Evaluation level standards:

[0107] 0-No deterioration: No deterioration.

[0108] 1- Slight deterioration: The sour smell is lighter, the color is darker, and it is slightly turbid.

[0109] 2-Moderate deterioration: The product has a strong sour and smelly smell, darker color, turbidity, and has precipitation and flocs.

[0110] 3-Severe deterioration: The product has a strong sour and smelly smell, darker color, turbidity, precipitation and flocs, and stratification.

[0111] It can be seen from the above results that the storage methods of Examples 1 to 5 can significantly extend the storage stability of maltose syrup, prevent it from deteriorating for a long time, and maintain good storage stability even in the case of repeated long-term power outages, effectively avoiding storage losses caused by daily power outages or maintenance power outages, and ensuring inventory. From the comparative example results, it can be seen that reducing the sealing layer will significantly reduce the shelf life; and adding pullulan, chitosan and diglyceride oil has a certain effect of delaying deterioration. The combination of hemp seed extract and basil leaf extract has a certain effect of delaying deterioration.

Claims

1. A method for storing maltose syrup, characterized in that: The steps include: S1: placing the maltose syrup in a storage container and freezing it to a solidified state; S2: Lay a layer of diaphragm on the surface of the frozen and solidified maltose syrup; The thickness of the diaphragm is 0.05 mm to 0.5 mm; the diaphragm is a food-grade oil paper film or a food-grade plastic film and has water-proof properties; S3: According to the mass ratio, hemp seed extract: basil leaf extract: pullulan: chitosan: gelatin: purified water = (0.5-2): (1-4): (0.1-0.3): (2-5): (60-80): (360-480), boil the hemp seed extract, basil leaf extract, pullulan, chitosan, gelatin and purified water at 60-70°C until the gelatin melts into a slurry to obtain the sealing slurry I; S4: According to the mass ratio, hemp seed extract: basil leaf extract: diglyceride oil: gelatin: aloe vera gel: purified water = (0.5-2): (1-4): (5-8): (60-80): (15-20): (600-800), boil the hemp seed extract, basil leaf extract, diglyceride oil, gelatin and purified water at 60°C-70°C until the gelatin is melted into a slurry, then add the aloe vera gel and mix well to obtain a sealing slurry II; S5: pouring the sealing slurry I onto the surface of the diaphragm, and obtaining a solid sealing layer after the sealing slurry I solidifies; then pouring the sealing slurry II onto the surface of the solid sealing layer, and obtaining a semi-solid sealing layer after condensation; and continuing the frozen storage.

2. The method for storing maltose syrup according to claim 1, characterized in that: In S1, the freezing temperature is -18°C to -25°C.

3. The storage method of maltose syrup according to claim 1, characterized in that: In S1, the maltose syrup is sterilized and the storage container is sterilized.

4. The storage method of maltose syrup according to claim 1, characterized in that: In S2, the diaphragm is sterilized.

5. The storage method of maltose syrup according to claim 1, characterized in that: The preparation method of the hemp seed extract comprises the following steps: crushing and pressing the hemp seeds to obtain hemp seed oil and hemp seed residue, percolating the hemp seed residue with ethanol of 5 to 6 times the mass of the hemp seed residue to obtain an extract, concentrating and drying to obtain a hemp seed residue extract; and mixing the hemp seed residue extract with the hemp seed oil to obtain the hemp seed extract.

6. The method for storing maltose syrup according to claim 1, characterized in that: The preparation method of the basil leaf extract comprises the following steps: crushing the basil leaves, adding water in an amount of 10 to 12 times the mass of the basil leaves, boiling until the water evaporates to 20% to 30% of the volume, filtering, and collecting the filtrate to obtain the basil leaf extract.

7. The method for storing maltose syrup according to claim 1, characterized in that: In S5, the solid sealing layer is in a solid state; and the semi-solid sealing layer is in a semi-solid state.

8. The method for storing maltose syrup according to claim 1, characterized in that: In S5, the thickness of the solid sealing layer is 2 mm to 5 mm; the thickness of the semi-solid sealing layer is 1 mm to 3 mm.

9. An application of maltose syrup, wherein the maltose syrup is the maltose syrup stored by the maltose syrup storage method according to claim 1, characterized in that: The maltose syrup is used as an additive for medicines, foods and industrial products. Before using the maltose syrup, the storage container is placed at room temperature, the semi-solidified layer and the solidified layer are scraped off, and after the surface of the maltose syrup is naturally thawed, the diaphragm is uncovered and removed.

Images