Cellar sealing method and wine making method

Abstract

The invention discloses a cellar sealing method and a wine making method, and relates to the technical field of wine making. The cellar sealing method comprises the following steps that fermented grains filled in a cellar are divided into first subarea fermented grains and second subarea fermented grains, the first subarea fermented grains surround the second subarea fermented grains, and the first subarea fermented grains are compacted so that the first subarea fermented grains can descend by a preset height; the first partition fermented grains are covered with an isolation layer, the isolation layer comprises a first isolation object, a second isolation object and a third isolation object which are sequentially covered, and the first isolation object, the second isolation object and the third isolation object are different isolation objects; and sealing the cellar. According to the application, the fermented grains in the first subarea are compacted, and the compact fermented grain structure provides stable support for the pit mud, so that the pit mud can be tightly attached to the pit wall when the pit is sealed, and a gap between the pit mud and the pit wall caused by loosening of the fermented grains is effectively avoided, so that the sealing performance is enhanced, and external air is prevented from permeating into the pit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquor making, and in particular to a pit sealing method and a liquor making method. BACKGROUND

[0002] Solid-state fermentation of liquor is the core link of traditional brewing process, and its fermentation process relies on the synergistic effect of microbial community in the pit, which has a decisive influence on the formation of flavor substances in the final liquor. In the production process of Luzhou-flavor liquor and Maotai-flavor liquor, the operation of pit sealing is a key step to ensure the stability of fermentation environment, promote the reproduction of beneficial microorganisms and inhibit the pollution of miscellaneous bacteria.

[0003] At present, the common pit sealing method is disclosed in Chinese patent CN 116694416A, which includes the following steps: after the pit is filled, the pit is sealed by the following steps: the pit is filled with pit mud, and the pit is sealed with 8-10 cm pit mud, and the pit is covered with plastic cloth. The pit mud surface is cleaned and patted in time the next day.

[0004] However, in actual production, there are still many problems of moldy grains when the pit is sealed. This is mainly due to the fact that the pit mud is not tightly sealed, the plastic cloth edge is not tightly sealed, or there are small cracks on the pit surface, which leads to the entry of air and the breeding of mold. SUMMARY

[0005] In order to solve at least one problem mentioned in the background, the present application provides a pit sealing method and a liquor making method. By compacting the first partitioned grains, the compacted grain structure provides stable support for the pit mud, so that the pit mud can tightly adhere to the pit wall when the pit is sealed, effectively avoiding the gap between the pit mud and the pit wall caused by loose grains, thereby enhancing the sealing performance and preventing external air from penetrating into the pit.

[0006] The specific technical solutions provided by the embodiments of the present application are as follows:

[0007] In a first aspect, a pit sealing method is provided, which includes the following steps:

[0008] The grains filled in the pit are divided into first partitioned grains and second partitioned grains, the first partitioned grains surround the second partitioned grains, and the first partitioned grains are compacted to a predetermined height;

[0009] An isolation layer is covered on the first partitioned grains, the isolation layer includes first, second and third isolators covered in sequence, and the first, second and third isolators are different isolators;

[0010] The pit is sealed.

[0011] In one specific embodiment, the pit sealing process comprises:

[0012] covering the first sub-zone of fermented grains and the second sub-zone of fermented grains with a fourth partition;

[0013] sealing the pit with pit mud.

[0014] In one specific embodiment, the pit sealing method further comprises:

[0015] controlling the moisture content of the pit mud to be within a first threshold range after the pit sealing process;

[0016] sealing the gap between the pit mud and the pit;

[0017] covering the pit mud with a fifth partition when the moisture content of the pit mud is reduced to be within a second threshold range.

[0018] In one specific embodiment, the controlling the moisture content of the pit mud to be within a first threshold range comprises:

[0019] detecting the moisture content of the pit mud and comparing the moisture content of the pit mud with a first threshold range;

[0020] if the moisture content of the pit mud is within or higher than the first threshold range, no moisture content adjustment is performed;

[0021] if the moisture content of the pit mud is lower than the first threshold range, the moisture content of the pit mud is adjusted to be within the first threshold range.

[0022] In one specific embodiment, the first threshold range is 50%-60% and the second threshold range is 30%-40%.

[0023] In one specific embodiment, the pit sealing method further comprises:

[0024] cleaning the pit surface of the pit.

[0025] In one specific embodiment, the dividing the fermented grains in the pit into a first sub-zone of fermented grains and a second sub-zone of fermented grains comprises:

[0026] setting the fermented grains in the pit within a first distance from the inner wall of the pit as the first sub-zone of fermented grains, and setting the remaining fermented grains in the pit as the second sub-zone of fermented grains, the first distance being 30cm-40cm.

[0027] In one specific embodiment, the dividing the fermented grains filled in the pit into a first sub-zone of fermented grains and a second sub-zone of fermented grains comprises:

[0028] The highest point of the first partitioned fermented grains is arranged 20cm-25cm lower than the highest point of the second partitioned fermented grains.

[0029] After the compaction treatment, the highest point of the first partitioned fermented grains is lowered by 10cm-20cm.

[0030] In one specific embodiment, the first partition is 4kg-6kg of husks.

[0031] And / or, the second partition is 8cm-10cm thick and 6cm-8cm wide of mother grains.

[0032] And / or, the third partition is 8kg-10kg of burlap bags soaked with cocktail, the cocktail having an alcohol content of 45%vol-50%vol.

[0033] In a second aspect, a method for making liquor is provided, characterized in that it comprises a pit sealing method according to any one of claims 1-8, which is used to reduce the amount of moldy grains produced when fermented grains ferment in a pit.

[0034] In one specific embodiment, the method for making liquor further comprises a moldy grain treatment method, which comprises the following steps:

[0035] The fermented grains are removed from the pit, moldy grains are obtained from the fermented grains, and the moldy grains are divided into moldy grains of different moldy degrees based on the number of molds.

[0036] The moldy grains are treated by different treatment methods based on the different moldy degrees.

[0037] In one specific embodiment, dividing the moldy grains into moldy grains of different moldy degrees based on the number of molds comprises:

[0038] The number of molds M in the moldy grains is obtained, and the number of molds M is judged:

[0039] If M≤200*10 4 CFU / g, it is determined that the moldy degree of the moldy grains is first moldy;

[0040] If 200*10 4 CFU / g≤M≤500*10 4 CFU / g, it is determined that the moldy degree of the moldy grains is second moldy;

[0041] If M>500*10 4If the CFU / g is 1.0×107, it is determined that the mildew degree of the moldy grains is the third degree of mildew.

[0042] In one specific embodiment, the processing of the moldy grains according to the different degrees of mildew includes:

[0043] The moldy grains of the first degree of mildew are placed in a retort and subjected to steaming at 0.1-0.12 MPa for 60-80 min, and then the moldy grains of the first degree of mildew are taken out of the retort and spread out for airing, and then the cooled moldy grains are added with Daqu;

[0044] And / or, the moldy grains of the second degree of mildew are soaked in water at 95°C or above for 40-60 min, and then the moldy grains of the second degree of mildew are cooled to 30°C or below, and then the moldy grains of the second degree of mildew are rubbed, and then the rubbed moldy grains of the second degree of mildew are spread out for airing, and then the moldy grains of the second degree of mildew are placed in a retort and subjected to steaming at 0.1-0.12 MPa for 60-80 min, and then the steamed moldy grains of the second degree of mildew are spread out for airing, broken, cooled, and then added with Daqu and uniformly stirred, stacked into a pile, and then the moldy grains of the second degree of mildew in the pile are subjected to steaming again, and then the steamed and cooled moldy grains of the second degree of mildew are added with Daqu;

[0045] And / or, the moldy grains of the third degree of mildew are discarded.

[0046] Beneficial effects:

[0047] In the present application, after the moldy grains are filled into the pit, the moldy grains in the pit are divided into first-partitioned moldy grains and second-partitioned moldy grains, and the first-partitioned moldy grains are compacted, and then a separation layer formed by a layer of husks, a layer of mother grains, and a layer of burlap soaked with cocktails is covered on the first-partitioned moldy grains; by compacting the first-partitioned moldy grains, the compacted structure of the moldy grains provides stable support for the pit mud, so that the pit mud can closely adhere to the pit wall when the pit is sealed, effectively avoiding the gaps between the pit mud and the pit wall caused by the looseness of the moldy grains, thereby enhancing the sealing performance, and further preventing the infiltration of external air into the pit, and moreover, the arrangement mode of the husks, the mother grains, and the burlap soaked with cocktails arranged in sequence is further used to block the air from entering the pit, destroy the aerobic environment for the survival of mold, and greatly reduce the number of mold. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0049] Figure 1 is a flowchart of the present application;

[0050] Figure 2 is a location distribution diagram of the first subzone and the second subzone of the liquor dregs in the present application;

[0051] Figure 3 is a comparison diagram of the first subzone of the liquor dregs before compaction and after compaction in the present application. DETAILED DESCRIPTION

[0052] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments, and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] After the accumulation fermentation of the liquor dregs (or wine dregs), the liquor dregs are filled into the pit pool. Generally, after the liquor dregs are filled into the pit, the shape of the liquor dregs in the pit needs to be arranged, the surrounding edge is arranged, and then rice husk is scattered, and a sack is covered on the rice husk. The pit is sealed with 8-10 cm thick pit mud, the sealing thickness is uniform, plastic cloth is covered, and the pit mud surface sinking the next day is cleaned and beaten in time. However, in actual production, there is still a problem that the number of mold dregs is relatively large when the liquor dregs are taken out of the pit.

[0055] The reasons for generating more mildew are as follows: (1) When sealing the cellar, the cellar mud needs to be covered on the fermented grains and closely attached to the cellar wall (i.e. the inner wall of the cellar pit) to achieve sealing. If the fermented grains around the cellar pit are loose, the mud layer cannot be evenly compacted after being applied, and the mud layer is prone to sliding or shrinking, thereby forming gaps or cracks between the mud layer and the cellar wall. These gaps or cracks provide a channel for outside air, causing oxygen to penetrate into the cellar. In the ideal environment of anaerobic fermentation, the entry of oxygen will disrupt the ecological balance of microorganisms, promote the proliferation of aerobic bacteria (such as mold), and thus form mold on the surface or edge of the fermented grains, resulting in "mildew", which seriously affects the quality of the wine.(2) The sealing film is prone to produce condensed water under temperature changes. If the fermented grains around the cellar wall are loose in structure and have a high porosity, the condensed water will flow back along the cellar wall and be absorbed by the fermented grains, causing a significant increase in the local moisture content. The high-humidity environment further provides favorable growth conditions for microorganisms such as mold, exacerbating the occurrence of mold, forming a vicious cycle, and ultimately affecting the normal fermentation and the quality of the base wine.(3) The traditional pipe cellar method covers food film on the surface of the cellar mud immediately after sealing the cellar, and adopts a management mode of checking every 2-3 days. There are obvious defects. First, due to the fact that the cellar mud is in a state of insufficient water replenishment for a long time, the water content of the cellar mud cannot be effectively maintained or even gradually reduced, causing the cellar mud to dry, shrink, and reduce in weight, thereby weakening the gravitational pressure on the lower sealing film and failing to continuously compact the edge of the film, so that the cellar wall part is prone to form gaps; at the same time, the fermented grains around the cellar pit sink naturally due to their loose structure after entering the cellar, and if the gaps between the cellar mud and the cellar wall that are generated after the sinking do not repair and compact in time, these gaps will become a channel for air to enter the cellar, and oxygen will penetrate into the cellar, thereby destroying the anaerobic fermentation environment and promoting the proliferation of aerobic bacteria such as mold on the surface of the fermented grains, especially around the cellar wall, ultimately leading to frequent "mildew" phenomenon, which seriously affects the fermentation quality and the flavor of the wine.

[0056] To solve the above problems, the present application provides the following embodiments:

[0057] In one embodiment, a cellar pit sealing method comprises the following steps: Figure 1

[0058] The fermented grains filled in the cellar pit are divided into first partition fermented grains and second partition fermented grains, the first partition fermented grains surround the second partition fermented grains, and the first partition fermented grains are compacted by a predetermined height;

[0059] An isolation layer is covered on the first partition fermented grains, the isolation layer comprises a first isolation material, a second isolation material and a third isolation material covered in sequence, and the first isolation material, the second isolation material and the third isolation material are different isolation materials;

[0060] The cellar pit is sealed. ​

[0061] After the distiller's grains are filled into the pit, the distiller's grains in the pit are divided into first partition distiller's grains and second partition distiller's grains, as shown in Figure 2 The first partition distiller's grains surround the second partition distiller's grains, the first partition distiller's grains are located at the periphery of the pit, and the second partition distiller's grains are located in the first partition distiller's grains. The first partition distiller's grains can be compacted by using a tool or by treading, so that the highest point of the first partition distiller's grains is lowered by 10-20 cm.

[0062] Then, an isolation layer is covered on the first partition distiller's grains, the isolation layer comprising: a first isolator, a second isolator and a third isolator, wherein the first isolator is chaff, the second isolator is mother grains left over from the previous season's production, and the third isolator is a sack soaked with tailings.

[0063] In the above technical solution, the first partition distiller's grains are compacted, i.e. the distiller's grains at the periphery of the pit are compacted, which can greatly reduce the degree of subsidence of the distiller's grains after the pit is sealed, and the compacted structure of the distiller's grains can provide stable support for the pit mud, so that the pit mud can closely adhere to the pit wall when the pit is sealed, effectively avoiding the occurrence of gaps between the pit mud and the pit wall due to loose distiller's grains, thereby enhancing the sealing performance, preventing external air from penetrating into the pit, inhibiting the breeding of mold and other aerobic bacteria, and significantly reducing the risk of moldy grains. At the same time, after the first partition distiller's grains are compacted, the structure of the distiller's grains is dense and the porosity is reduced, which can effectively reduce the phenomenon of condensate water flowing back along the pit wall and being absorbed by the distiller's grains, avoid local high moisture around the pit wall, and prevent mold problems caused by excessive humidity.

[0064] It is worth noting that chaff (such as rice husk) is easy to absorb moisture and is relatively loose, and cannot block the breeding of mold when air enters, so chaff alone as an isolation layer has poor effect in controlling mold breeding. Therefore, in this embodiment, a chaff-mother grains-sack soaked with tailings arrangement is used to inhibit mold growth. The structure of the mother grains is relatively compact, which can effectively isolate the contact of air, and the mother grains contain residual starch and sugar, which provide nutrients for microorganisms in the pit. Laying the sack can not only isolate the occurrence of moldy grains, but also isolate the mixing of pit mud. The sack is arranged on the top, and the chaff is arranged on the bottom.

[0065] The husk absorbs the condensed water flowing back on the film and separates the condensed water from the distiller's grains. After opening the pit, the husk separates the distiller's grains from the pit mud, avoiding the base liquor in the distiller's grains from having a muddy taste. The mother grains further play a separation role. The mother grains ensure that the distiller's grains are separated from the air during the sinking process in the pit, thereby reducing the number of moldy grains. Finally, a sack soaked in tail liquor is used to cover the mother grains and tightly adhere to the inner wall of the pit. The tail liquor inhibits or kills various aerobic bacteria, especially mold (such as Aspergillus, Penicillium, and Mucor), which causes mold. After the sack is soaked in the tail liquor, it is placed around the pit wall. The alcohol in the tail liquor continues to evaporate, forming a microenvironment with a high alcohol concentration in the upper space of the pit and the surface layer of the distiller's grains, effectively preventing the germination of mold spores and the growth of mycelium. The sack itself has a certain thickness and liquid absorption capacity. After being soaked in wine, it is covered in the gaps of the pit wall, not only reducing air circulation, but also enhancing the sealing effect through its weight and wet state, further blocking the entry of oxygen and destroying the aerobic environment that mold relies on for survival.

[0066] Further, the pit sealing treatment comprises:

[0067] covering the first partitioned distiller's grains and the second partitioned distiller's grains with a fourth separator;

[0068] sealing the pit with pit mud.

[0069] In the above technical solution, the fourth separator is a food-grade film, such as a polyethylene film, a polypropylene film, or a polyvinyl chloride film. When covering the first partitioned distiller's grains and the second partitioned distiller's grains, it is necessary to ensure that the film is laid flat without wrinkles to avoid air bubbles or damaged points that may cause a loose seal.

[0070] Further, the pit sealing method further comprises a maintenance treatment, the maintenance treatment comprising:

[0071] after the pit sealing treatment, controlling the water content of the pit mud to be within a first threshold range;

[0072] sealing the gap between the pit mud and the pit;

[0073] when the water content of the pit mud decreases to within a second threshold range, covering the pit mud with a fifth separator.

[0074] wherein the first threshold range is 50%-60% and the second threshold range is 30%-40%.

[0075] Further, controlling the water content of the pit mud to be within the first threshold range comprises:

[0076] detecting the water content of the pit mud and comparing the water content of the pit mud with the first threshold range:

[0077] if the water content of the pit mud is within or higher than the first threshold range, no treatment is performed;

[0078] If the water content of the pit mud is lower than the first threshold range, the water content of the pit mud is adjusted to be within the first threshold range.

[0079] Further, after the pit sealing treatment, the maintenance treatment further includes:

[0080] Cleaning the pit surface of the pit.

[0081] The cleaning of the pit surface of the pit can be performed at any time during the maintenance treatment, so as to maintain the hygiene of the pit surface.

[0082] Specifically, the maintenance treatment performs daily pit management according to the following process:

[0083] Cleaning the pit surface;

[0084] Measuring the water content of the pit mud, if the water content of the pit mud is within 50%-60% or higher than 60%, no water content adjustment is needed; if the water content of the pit mud is lower than 50%, water content adjustment is needed, which includes using a wet mop to mop the surface of the pit mud, and adding water to the pit mud to make the water content within 50%-60%; if the water content of the pit mud is higher than 60%, waiting for the pit mud to naturally evaporate water to reduce the water content to 30%-40%;

[0085] When the water content of the pit mud is within 50%-60%, using a wooden hammer or a pestle to flatten the gap between the pit mud and the pit wall, and sealing the gap between the pit mud and the pit;

[0086] Then, when the water content of the pit mud naturally evaporates water to reduce to 30%-40%, using a food-grade film (i.e., the fifth isolator) to cover the pit mud. The water content of the pit mud can be tested by a simple drying method or using a soil moisture meter.

[0087] In the above technical solution, the water content of the pit mud used for sealing the pit is generally about 80% (the pit mud is relatively mature, and is in a wani shape), and the sealing film cannot be covered immediately after sealing the pit, but must be waited until the water content of the pit mud is within 50%-60%, and the gap between the pit mud and the pit wall is flattened every day to maintain the sealing between the pit mud and the pit wall, so as to avoid air entering the pit and avoid mold production. The sealing film is covered when the water content of the pit mud naturally evaporates water to reduce to 30%-40%, so as to avoid the pit mud from being too dry and cracking.

[0088] The surface of the pit mud is wiped with a wet mop, and the moisture content of the pit mud is maintained at 50%-60%, which can effectively prevent the pit mud from drying and shrinking due to water loss, thereby maintaining the structural integrity and weight of the pit mud. The sufficient moisture content keeps the pit mud soft and dense, enhances the adhesion between the pit mud and the pit wall, and avoids the generation of gaps due to dry cracking or shrinkage. At the same time, the moist pit mud with a certain weight can continuously and stably press the lower sealing film under the action of gravity, ensure that the edges of the film are compacted firmly, improve the overall sealing performance, effectively block the entry of external air into the pit, prevent the penetration of oxygen and cause the growth of mold, thereby eliminating the generation of "moldy grains", and creating a good and stable environment for the anaerobic fermentation of grains.

[0089] Further, the division of the grains in the pit pool into the first partition grains and the second partition grains includes:

[0090] The grains in the pit pool within a first distance from the inner wall of the pit pool are set as the first partition grains, and the remaining grains in the pit pool are the second partition grains, wherein the first distance is 30cm-40cm. Optionally, the first distance is 30cm, 31cm, 32cm, 33cm, 34cm, 35cm, 36cm, 37cm, 38cm, 39cm or 40cm; it should be understood that other adaptive values within the range of 30cm-40cm are also applicable to the technical solution in the embodiment. The first distance of 30cm-40cm can not only guarantee the edge sealing performance, but also not affect the normal fermentation of the center grains, achieving a balance between sealing and ventilation. If the first distance is less than 30cm, it is limited to a narrow area close to the pit wall, and it is difficult to effectively form a continuous sealing band, resulting in loose connection between the grains and the pit wall, and it is difficult for the pit mud to closely adhere, which is easy to produce gaps, allowing air to penetrate and cause mold. At the same time, the support force of the compacted area is insufficient, which is difficult to resist the gas pressure and grain sinking during the fermentation process, affecting the overall sealing stability. If the first distance is greater than 40cm, the compacted range extends to the center area of the pit pool, which may cause the center grains to be over-compacted, destroy the loose structure, reduce the ventilation and microbial activity, hinder the normal diffusion of heat and gas during the fermentation process, cause uneven fermentation, slow heating or local "pressure death", and affect the yield and flavor of the wine.

[0091] Further, the division of the grains filled into the pit pool into the first partition grains and the second partition grains includes:

[0092] The highest point of the first partition grains is arranged to be lower than the highest point of the second partition grains by 20cm-25cm.

[0093] After the compaction treatment, the highest point of the first partition grains is lowered by 10cm-20cm.

[0094] Optionally, before the compaction treatment, the highest point of the first subzone of fermented grains is 20 cm, 21 cm, 22 cm, 23 cm, 24 cm, or 25 cm lower than the highest point of the second subzone of fermented grains; it should be understood that other adaptive values within the range of 20 cm-25 cm are also applicable to the technical solutions in this embodiment. Optionally, after the compaction treatment, the highest point of the first subzone of fermented grains drops by 10 cm, 11 cm, 12 cm, 13 cm, 14 cm, 15 cm, 16 cm, 17 cm, 18 cm, 19 cm, or 20 cm; it should be understood that other adaptive values within the range of 10 cm-20 cm are also applicable to the technical solutions in this embodiment. If the height of the highest point of the first subzone of fermented grains drops by more than 20 cm, it will cause excessive compaction, reduce the porosity of fermented grains, hinder microbial metabolism, heat conduction, and gas discharge, and cause slow fermentation start and uneven temperature rise; if the height of the highest point of the first subzone of fermented grains drops by less than 10 cm, the drop range is too small, and there is still a loose transition layer between the fermented grains, which is easy to cause gaps and cause poor sealing, and air infiltration will cause mold growth.

[0095] Further, the first separator is rice husk, and the amount of the first separator is 4 kg-6 kg. The rice husk is used to absorb and buffer the backflow of condensed water, avoid moisture accumulation to cause the fermented grains to be too wet, form a physical barrier to inhibit the settlement of mold spores in the air, and reduce the risk of mold growth; at the same time, it is convenient to distinguish materials when opening the pit and reduce the mixing of impurities. In this embodiment, the amount of rice husk is set to 4 kg-6 kg based on the size of the first subzone of fermented grains. Optionally, the amount of rice husk is 4 kg, 4.5 kg, 5 kg, 5.5 kg, or 6 kg. It should be understood that other adaptive values within the range of 4 kg-6 kg are also applicable to the technical solutions in this embodiment.

[0096] If the amount of rice husk is too much, it will cause poor heat conduction, local heat accumulation, easy breeding of miscellaneous bacteria after water absorption, and occupation of pit capacity, reduce the liquor yield, and increase the cost; if the amount is too small, the isolation and water absorption effect is insufficient, and the condensed water is easy to directly penetrate into the fermented grains, causing rancidity or mold growth, and poor air permeability will also affect the start of fermentation.

[0097] Further, the second separator is mother grains left over from the last season production, the thickness of the second separator is 8 cm-10 cm, and the width of the second separator is 6 cm-8 cm. Optionally, the thickness of the second separator is 8 cm, 9 cm, or 10 cm; it should be understood that other adaptive values within the range of 8 cm-10 cm are also applicable to the technical solutions in this embodiment. Optionally, the width of the second separator is 6 cm, 7 cm, or 8 cm; it should be understood that other adaptive values within the range of 6 cm-8 cm are also applicable to the technical solutions in this embodiment. The mother grains are arranged close to the pit wall, and too much amount of mother grains will cause waste of mother grains, and too little amount will not effectively isolate the contact between the fermented grains and the air during the sinking process of the pit mud.

[0098] Further, the third barrier is a burlap bag soaked with a cocktail, the cocktail having an alcohol content of 45%vol-50%vol, and the cocktail having a dosage of 8kg-10kg.

[0099] Optionally, the alcohol content of the cocktail is 45%vol, 46%vol, 47%vol, 48%vol, 49%vol, or 50%vol; it should be understood that other adaptive values within the range of 45%vol-50%vol are also applicable to the technical solution in this embodiment. When the alcohol content is within the range of 45%vol-50%vol, the ethanol concentration in the cocktail is sufficient to destroy the cell membrane of mold and inhibit spore germination, while not causing significant interference to the anaerobic fermentation system. If the alcohol content is lower than 45%vol: the ethanol concentration is not sufficient to effectively kill or inhibit mold, the antibacterial effect is significantly reduced, the risk of bacterial contamination increases, and the prevention and control effect is greatly discounted. If the alcohol content is higher than 50%vol: although the sterilization ability is strong, it is volatile, irritating, and easy to damage the micro-ecological environment of the pit mouth, and even cause local “anti-burning” of the fermented grains, affecting the uniformity of fermentation and the yield of liquor.

[0100] Optionally, the dosage of the cocktail is 8kg, 9kg, or 10kg; it should be understood that other adaptive values within the range of 8kg-10kg are also applicable to the technical solution in this embodiment. The range of 8kg-10kg can ensure that the burlap is fully moistened and continuously releases an appropriate amount of alcohol, achieving a balance between antibacterial and ecological balance. If the dosage of the cocktail is less than 8kg, the burlap is not moist enough, the alcohol volatilization is small and short in duration, and a stable antibacterial environment cannot be formed in the pit mouth, especially in the high-temperature and high-humidity season, mold is easy to reproduce rapidly at the edge of the pit sealing film or the gap in the pit wall, leading to frequent “moldy grains” and affecting the quality of the liquor. If the dosage of the cocktail is higher than 10kg, excessive cocktail inhibits the activity of beneficial microorganisms such as yeast, delaying the fermentation process

[0101] In another embodiment, a method for making liquor is provided, in which a pit sealing method as described above is used for processing during the pit sealing maintenance process, and the pit sealing method is used to reduce the number of moldy grains produced during the fermentation of fermented grains in the pit.

[0102] Further, the method for making liquor further comprises a moldy grain treatment method, the moldy grain treatment method comprising the following steps:

[0103] removing the fermented grains from the pit, obtaining moldy grains from the fermented grains, and dividing the moldy grains into moldy grains of different moldy degrees based on the number of molds;

[0104] treating the moldy grains using different treatment methods based on the different moldy degrees.

[0105] Further, dividing the moldy grains into moldy grains of different moldy degrees based on the number of molds comprises:

[0106] Obtain the number of molds M in the moldy grains, and judge the number of molds M:

[0107] If M≤200*10 4 CFU / g, it is determined that the moldy degree of the moldy grains is first-grade moldy;

[0108] If 200*10 4 CFU / g≤M≤500*10 4 CFU / g, it is determined that the moldy degree of the moldy grains is second-grade moldy;

[0109] If M>500*10 4 CFU / g, it is determined that the moldy degree of the moldy grains is third-grade moldy.

[0110] In the above technical solution, the mold number measurement step is: collecting the grains sample as test material; setting the mold culture medium as the synthetic medium of Bengal red; taking 10g grains sample, adding 90ml sterile water to mix uniformly, detecting the number of molds in each gram of grains by plate dilution counting method.

[0111] Further, the moldy grains are treated by different treatment methods based on different moldy degrees, including:

[0112] The first-grade moldy grains are placed in a retort and steamed for 60min-80min under 0.1MPa-0.12MPa pressure, then the first-grade moldy grains are taken out of the retort and laid to cool, and then the Daqu is added.

[0113] In the above technical solution, the amount of Daqu is determined according to the amount of moldy grains, and the reference is 1kg Daqu / 10kg moldy grains. The purpose of adding Daqu is to enrich yeast as normal grains, so as to be more beneficial to sugar accumulation.

[0114] Further, the second-grade moldy grains are soaked in water above 95℃ for 40min-60min, then the second-grade moldy grains are cooled to below 30℃, and the second-grade moldy grains are washed, laid to cool, then steamed for 60min-80min under 0.1MPa-0.12MPa pressure, and then the steamed second-grade moldy grains are laid to cool, broken, cooled and sprinkled with Daqu and stirred evenly, stacked into a pile, and then the piled second-grade moldy grains are steamed again after 18h-24h, and then the steamed and cooled second-grade moldy grains are added with Daqu.

[0115] In the technical solution, the present embodiment first identifies the moldy grains, and adopts different treatment methods according to different moldy degrees, so as to remove the mold and save resources. For the moldy grains with the second degree of moldy, the moldy grains are soaked in boiling water for 1 hour, and then the moldy white layer on the surface of the fermented grains is scrubbed clean. This is not only conducive to more detailed treatment of the moldy grains and more complete removal of the mold, but also can supplement the water of the moldy grains, so as to supplement the water lost during the empty steaming and ensure the yield of the fermented grains. If the moldy grains are only soaked, the water absorption degree is inconsistent, which causes the waste of water resources, and part of the moldy grains cannot contact the boiling water, so the mold cannot be removed.

[0116] Further, the moldy grains with the third degree of moldy are discarded.

[0117] Embodiment 1

[0118] In combination with the above embodiment, a pit sealing method is provided, which specifically includes the following steps.

[0119] After the fermented grains are filled into the pit, the fermented grains within 40 cm from the inner wall of the pit are set as first-zone fermented grains, and the remaining fermented grains in the pit are second-zone fermented grains. The second-zone fermented grains are arranged in a tortoise-back shape, the first-zone fermented grains surround the second-zone fermented grains, and the highest point of the first-zone fermented grains is 25 cm lower than the highest point of the second-zone fermented grains. The first-zone fermented grains are compacted to make the highest point of the first-zone fermented grains drop by 20 cm.

[0120] The first-zone fermented grains are covered with husks, and the amount of the husks is 6 kg. Then, the husks are covered with mother grains left over from the previous production, and the thickness of the mother grains is 10 cm and the width of the mother grains is 8 cm. Then, the mother grains are covered with sacks soaked with tail liquor, and the alcohol content of the tail liquor is 50%vol, and the amount of the tail liquor is 10 kg.

[0121] Then, the pit is subjected to sealing treatment and maintenance treatment. The sealing treatment includes covering the first-zone fermented grains and the second-zone fermented grains with a film, and then sealing the pit with pit mud. After the sealing treatment, the maintenance treatment is performed, which includes:

[0122] The pit surface of the pit is cleaned every day to keep the pit surface clean and hygienic.

[0123] First, the surface of the pit mud is wiped with a wet mop to control the water content of the pit mud to be within 50%.

[0124] The gap between the pit mud and the pit is smoothed with a wooden hammer or a pestle to keep the sealing between the pit mud and the pit.

[0125] Then, when the water content of the pit mud is reduced to 30%, the pit mud is covered with a film.

[0126] Embodiment 2

[0127] In combination with the above embodiment, a cellar sealing method is provided, which specifically comprises the following steps:

[0128] After the distiller's grains are filled into the cellar, the distiller's grains within 35 cm from the inner wall of the cellar are set as first-partition distiller's grains, and the rest of the distiller's grains in the cellar are second-partition distiller's grains. The second-partition distiller's grains are arranged in a tortoise-back shape, the first-partition distiller's grains surround the second-partition distiller's grains, and the highest point of the first-partition distiller's grains is 22 cm lower than that of the second-partition distiller's grains. The first-partition distiller's grains are compacted to make the highest point of the first-partition distiller's grains drop by 15 cm.

[0129] The first-partition distiller's grains are covered with husks, and the amount of husks is 5 kg. Then, the husks are covered with mother grains left over from the previous production, and the thickness of the mother grains is 9 cm and the width is 7 cm. The mother grains are then covered with burlap soaked with tail liquor, and the alcohol content of the tail liquor is 48%vol, and the amount of tail liquor is 9 kg.

[0130] Then, the cellar is sealed and maintained. The sealing process includes covering the first-partition distiller's grains and the second-partition distiller's grains with a film, and then sealing the cellar with pit mud. After the sealing process, the maintenance process is performed, which includes:

[0131] The cellar surface is cleaned daily to keep it clean and hygienic;

[0132] First, use a wet mop to control the moisture content of the pit mud to within 55%;

[0133] Use a wooden hammer or pestle to smooth the gap between the pit mud and the cellar, keeping the pit mud and the cellar sealed;

[0134] Then, when the moisture content of the pit mud decreases to 35%, cover the pit mud with a film.

[0135] Example 3

[0136] In combination with the above embodiment, a cellar sealing method is provided, which specifically comprises the following steps:

[0137] After the distiller's grains are filled into the cellar, the distiller's grains within 30 cm from the inner wall of the cellar are set as first-partition distiller's grains, and the rest of the distiller's grains in the cellar are second-partition distiller's grains. The second-partition distiller's grains are arranged in a tortoise-back shape, the first-partition distiller's grains surround the second-partition distiller's grains, and the highest point of the first-partition distiller's grains is 20 cm lower than that of the second-partition distiller's grains. The first-partition distiller's grains are compacted to make the highest point of the first-partition distiller's grains drop by 10 cm.

[0138] The first partition of the fermented grains is covered with husks, and the amount of husks is 4 kg. Then, the husks are covered with mother grains left over from the previous production, and the thickness of the mother grains is 8 cm, and the width of the mother grains is 6 cm. Then, the mother grains are covered with burlap soaked with cocktail, and the alcohol content of the cocktail is 45%vol, and the amount of the cocktail is 8 kg.

[0139] Then, the pit is sealed and maintained. The sealing process includes covering the first partition of the fermented grains and the second partition of the fermented grains with film, and then sealing the pit with pit mud. After the sealing process, the maintenance process is performed, which includes:

[0140] The pit surface of the pit is cleaned daily to keep the pit surface clean and hygienic.

[0141] First, the surface of the pit mud is wiped with a wet mop to control the water content of the pit mud to within 60%.

[0142] The gap between the pit mud and the pit is smoothed with a wooden hammer or pestle to maintain the sealing between the pit mud and the pit.

[0143] Then, when the water content of the pit mud is reduced to 40%, the pit mud is covered with film.

[0144] Example 4

[0145] The present embodiment provides a method for making wine. During the sealing and maintenance process, a pit sealing method as described in Example 1 is used for processing, and after the fermentation in the fermented grains pit is completed, the moldy grains in the fermented grains are obtained, and the moldy grains are divided into moldy grains of different moldy degrees (first moldy, second moldy, and third moldy) based on the number of molds. Different treatment methods are used to treat the moldy grains based on different moldy degrees.

[0146] The first moldy moldy grains are placed in a retort and steamed at 0.1 MPa for 60 minutes. Then, the first moldy moldy grains are taken out of the retort and spread to air. After cooling, the big grains are added.

[0147] The second moldy moldy grains are soaked in water at a temperature of 95°C or higher for 40 minutes. Then, the second moldy moldy grains are cooled to a temperature of 30°C or lower, and the second moldy moldy grains are washed. After washing, the second moldy moldy grains are spread to air. Then, the second moldy moldy grains are placed in a retort and steamed at 0.1 MPa for 60 minutes. The steamed second moldy moldy grains are spread to air, broken, cooled, and sprinkled with big grains and mixed evenly. The second moldy moldy grains are stacked into a pile, and after 18 hours, the second moldy moldy grains in the pile are steamed again in a retort. After steaming and cooling, the big grains are added.

[0148] Example 5

[0149] The present embodiment provides a wine making method. In the pit sealing maintenance process, a pit sealing method as described in Embodiment 1 is used for treatment, and after fermentation in the pit is completed, moldy grains in the fermented grains are obtained, and the moldy grains are divided into moldy grains with different moldy degrees (first moldy degree, second moldy degree, and third moldy degree) based on the number of molds. Different treatment methods are used for the moldy grains based on different moldy degrees.

[0150] The moldy grains with the first moldy degree are placed in a retort and are clear steamed at 0.11 MPa for 70 min. Then, the moldy grains with the first moldy degree are taken out of the retort and are spread for airing. After cooling, the Daqu is added.

[0151] The moldy grains with the second moldy degree are soaked in water at 95°C or above for 50 min. Then, the fermented grains with the second moldy degree are cooled to below 30°C, and are washed by rubbing. After washing by rubbing, the moldy grains with the second moldy degree are spread for airing. Then, the moldy grains with the second moldy degree are placed in a retort and are clear steamed at 0.11 MPa for 70 min. The moldy grains with the second moldy degree after clear steaming are spread for airing, broken into pieces, cooled, and evenly mixed with the Daqu by sprinkling and stirring. The moldy grains with the second moldy degree are stacked into a pile shape. After 20 h, the moldy grains with the second moldy degree in the pile shape are again clear steamed in a retort. After clear steaming and cooling, the Daqu is added.

[0152] Embodiment 6

[0153] The present embodiment provides a wine making method. In the pit sealing maintenance process, a pit sealing method as described in Embodiment 1 is used for treatment, and after fermentation in the pit is completed, moldy grains in the fermented grains are obtained, and the moldy grains are divided into moldy grains with different moldy degrees (first moldy degree, second moldy degree, and third moldy degree) based on the number of molds. Different treatment methods are used for the moldy grains based on different moldy degrees.

[0154] The moldy grains with the first moldy degree are placed in a retort and are clear steamed at 0.12 MPa for 80 min. Then, the moldy grains with the first moldy degree are taken out of the retort and are spread for airing. After cooling, the Daqu is added.

[0155] The moldy grains with the second moldy degree are soaked in water at 95°C or above for 60 min. Then, the fermented grains with the second moldy degree are cooled to below 30°C, and are washed by rubbing. After washing by rubbing, the moldy grains with the second moldy degree are spread for airing. Then, the moldy grains with the second moldy degree are placed in a retort and are clear steamed at 0.12 MPa for 80 min. The moldy grains with the second moldy degree after clear steaming are spread for airing, broken into pieces, cooled, and evenly mixed with the Daqu by sprinkling and stirring. The moldy grains with the second moldy degree are stacked into a pile shape. After 24 h, the moldy grains with the second moldy degree in the pile shape are again clear steamed in a retort. After clear steaming and cooling, the Daqu is added.

[0156] The treatment method of the moldy grains with the third moldy degree is the same as that of the moldy grains with the second moldy degree.

[0157] Comparative Example 1

[0158] After the distiller's grains are filled into the pit, the distiller's grains within 40 cm from the inner wall of the pit are set as the first partition distiller's grains, and the rest of the distiller's grains in the pit are the second partition distiller's grains. The second partition distiller's grains are arranged into a "turtle back shape", and the first partition distiller's grains surround the second partition distiller's grains. The highest point of the first partition distiller's grains is 25 cm lower than that of the second partition distiller's grains.

[0159] Then, the pit is subjected to pit sealing treatment and maintenance treatment. The pit sealing treatment and maintenance treatment are the same as those in Example 1.

[0160] Comparative Example 2

[0161] After the distiller's grains are filled into the pit, the distiller's grains within 40 cm from the inner wall of the pit are set as the first partition distiller's grains, and the rest of the distiller's grains in the pit are the second partition distiller's grains. The second partition distiller's grains are arranged into a "turtle back shape", and the first partition distiller's grains surround the second partition distiller's grains. The highest point of the first partition distiller's grains is 25 cm lower than that of the second partition distiller's grains.

[0162] The first partition distiller's grains are covered with husks, and the amount of husks is 6 kg.

[0163] Then, the pit is subjected to pit sealing treatment and maintenance treatment. The pit sealing treatment and maintenance treatment are the same as those in Example 1.

[0164] Comparative Example 3

[0165] After the distiller's grains are filled into the pit, the distiller's grains within 35 cm from the inner wall of the pit are set as the first partition distiller's grains, and the rest of the distiller's grains in the pit are the second partition distiller's grains. The second partition distiller's grains are arranged into a "turtle back shape", and the first partition distiller's grains surround the second partition distiller's grains. The highest point of the first partition distiller's grains is 22 cm lower than that of the second partition distiller's grains. The first partition distiller's grains are subjected to compaction treatment so that the highest point of the first partition distiller's grains is lowered by 15 cm.

[0166] Then, the pit is subjected to pit sealing treatment and maintenance treatment. The pit sealing treatment and maintenance treatment are the same as those in Example 2.

[0167] Comparative Example 4

[0168] After the distiller's grains are filled into the pit, the distiller's grains within 35 cm from the inner wall of the pit are set as the first partition distiller's grains, and the rest of the distiller's grains in the pit are the second partition distiller's grains. The second partition distiller's grains are arranged into a "turtle back shape", and the first partition distiller's grains surround the second partition distiller's grains. The highest point of the first partition distiller's grains is 22 cm lower than that of the second partition distiller's grains. The first partition distiller's grains are subjected to compaction treatment so that the highest point of the first partition distiller's grains is lowered by 15 cm.

[0169] The first partition distiller's grains are covered with husks, and the amount of husks is 5 kg. Then, ordinary sacks (not soaked sacks) are covered on the husks.

[0170] Then the pit is sealed and maintained. The sealing and maintenance are the same as in Example 2.

[0171] Comparative Example 5

[0172] The difference between Example 3 and Comparative Example 5 is in the maintenance step. The maintenance of Comparative Example 5 includes:

[0173] Immediately after sealing, a film is placed on the pit mud, and then the pit surface is cleaned every 2-3 days, and the gap between the pit mud and the pit is sealed.

[0174] Comparative Example 6

[0175] The difference between Example 4 and Comparative Example 6 is that the mildewy grains of the secondary mildew and the tertiary mildew are treated in the same way as the mildewy grains of the primary mildew in Example 4.

[0176] Comparative Example 7

[0177] The difference between Example 4 and Comparative Example 7 is that the mildewy grains of the primary mildew, the secondary mildew and the tertiary mildew are treated by the boiling water immersion method. The steps of the boiling water immersion method include: using a watering can to immerse the mildewy grains with boiling water above 95℃, and stirring the mildewy grains with an iron shovel while immersing, after all the mildewy grains are immersed and stirred, the grains are steamed, then spread and cooled.

[0178] The pits in Control Example 1 to Example 3 and Comparative Examples 1 to 5 are fermented for 30 days. After 30 days of fermentation, the grains are taken out of the pits, and the mildewy grains are screened from the grains by color. The normal grains are dark brown or yellowish brown, and the mildewy grains are mainly white (slightly mildewed and obviously mildewed grains) or mainly red or yellow (severely mildewed grains). After screening and separating the mildewy grains, the weight of the mildewy grains, the average diameter of the mildewy grains, and the moisture content (%) of the mildewy grains are obtained. The weight of the mildewy grains is directly weighed. In this example, slightly mildewed refers to primary mildew, obviously mildewed refers to secondary mildew, and severely mildewed refers to tertiary mildew.

[0179] Grain clusters will appear in the mildewy grains, which are caused by incomplete fermentation of the grains or gravity extrusion. The diameter of the grain clusters in the mildewy grains is measured by size, and the average diameter of the grain clusters in the mildewy grains is calculated.

[0180] The moisture content (%) of the mildewy grains is measured by using the drying method, and the calculation formula of the moisture content (%) is as follows:

[0181] Moisture content (%) = [(W1-W2) / W1] x 100%; In the formula, the symbols are explained as follows: W1: the mass of the mildewy grain sample before drying (unit: grams, g), W2: the mass of the mildewy grain sample after drying (unit: grams, g).

[0182] The measurement data of the weight of moldy grains, the average diameter of moldy grains, and the moisture content (%) of moldy grains in Examples 1 to 3 and Comparative Examples 1 to 5 are shown in Tables 1 and 2:

[0183] Table 1

[0184]

[0185]

[0186] From Table 1, it can be seen that in Examples 1 to 3, the low value of the weight of moldy grains in each pit at the time of pit unsealing was 28 kg, and the high value was 38 kg; the low value of the weight of first-grade moldy grains was 28 kg, and the high value was 30 kg; the low value of the weight of second-grade moldy grains was 0, and the high value was 8 kg; the weight of third-grade moldy grains was 0; the low value of the average diameter of moldy grains was 0.3 cm, and the high value was 0.5 cm.

[0187] In Comparative Examples 1 to 5, the low value of the weight of moldy grains in each pit at the time of pit unsealing was 59 kg, and the high value was 126 kg; the low value of the weight of first-grade moldy grains was 39 kg, and the high value was 83 kg; the low value of the weight of second-grade moldy grains was 18 kg, and the high value was 31 kg; the low value of the weight of third-grade moldy grains was 2 kg, and the high value was 20 kg; the low value of the average diameter of moldy grains was 1.8 cm, and the high value was 2.7 cm.

[0188] By comparison, it can be seen that the weight of moldy grains in Examples 1 to 3 is significantly reduced compared to Comparative Examples 1 to 5, and the number of third-grade moldy grains in Examples 1 to 3 can reach 0. The average diameter of moldy grains in Examples 1 to 3 is significantly reduced compared to Comparative Examples 1 to 5. Therefore, it can be seen that Examples 1 to 3 effectively reduce the number and degree of moldy grain mold.

[0189] Table 2

[0190]

[0191] From Table 1, it can be seen that in Examples 1 to 3, the low value of the moisture difference between the moisture content of moldy grains in each pit and the moisture content of normal grains was 0.5%, and the high value was 0.9%. In Comparative Examples 1 to 5, the low value of the moisture difference between the moisture content of moldy grains in each pit and the moisture content of normal grains was 2.1%, and the high value was 4.0%. Compared to the comparative examples, the difference between the moisture content of moldy grains and the moisture content of normal grains in the examples is smaller.

[0192] During the fermentation process of pit grains, the moisture content of moldy grains and normal grains is not significantly different, which helps to maintain the uniformity and stability of the fermentation system. The close moisture content means that the overall permeability, acidity, and microbial metabolic environment of the grains are relatively consistent, which is conducive to the coordinated action of beneficial microorganisms such as yeast and bacteria, and promotes the smooth progress of the saccharification and fermentation process.

[0193] If the moldy dregs contain much less water than the normal dregs, such as the comparative examples, the growth and metabolic activity of microorganisms, especially the water-sensitive yeast and functional fermentation bacteria, will be inhibited, resulting in slow or incomplete fermentation start, and affecting alcohol production and aroma formation.

[0194] The number of molds in the treated moldy dregs in Examples 4 to 6, and Comparative Examples 6 and 7 was measured, respectively, as shown in Table 3:

[0195] Table 3

[0196]

[0197]

[0198] From Table 3, it can be seen that the number of molds in the first-level moldy dregs treated in Examples 4 to 6 was 0.001*10 4 in the middle and 0.002*10 4 in the high, the number of molds in the second-level moldy dregs treated was 0.03*10 4 in the middle and 0.04*10 4 in the high, the number of molds in the third-level moldy dregs treated was 1.2*10 4 in the middle and 1.8*10 4 in the high.

[0199] The number of molds in the first-level moldy dregs treated in Comparative Example 6 was 0.002*10 4 , the number of molds in the second-level moldy dregs treated was 11.2*10 4 , and the number of molds in the third-level moldy dregs treated was 22*10 4 .

[0200] The number of molds in the first-level moldy dregs treated in Comparative Example 7 was 0.001*10 4 , the number of molds in the second-level moldy dregs treated was 0.3*10 4 , and the number of molds in the third-level moldy dregs treated was 3.5*10 4 .

[0201] It can be seen that the number of molds in the first-level moldy dregs treated in the examples and comparative examples is not much different, but the number of molds in the second-level moldy dregs and third-level moldy dregs treated in the examples is significantly lower than that in the comparative examples, which shows that the effect of removing molds by treating moldy dregs in the examples is better, and the number of molds can be reduced more.

[0202] While the preferred embodiments in the application have been described, additional modifications and changes can occur to those skilled in the art once they learn of the basic creative principles contained herein. Therefore, the above disclosure is intended to be taken as illustrative only and not as limiting the scope of the application. The appended claims are intended to cover all modifications and changes as fall within the true scope and spirit of the application.

[0203] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A method for sealing a cellar, characterized in that, The method for sealing the cellar includes the following steps: The mash filled into the pit is divided into a first section of mash and a second section of mash. The first section of mash surrounds the second section of mash. The first section of mash is compacted so that it drops to a predetermined height. The first partition of fermented mash is covered with an isolation layer, the isolation layer comprising a first isolation material, a second isolation material and a third isolation material covered sequentially, wherein the first isolation material, the second isolation material and the third isolation material are different isolation materials; The cellar is then sealed.

2. The method for sealing a cellar as described in claim 1, characterized in that, The sealing process includes: The first and second partition lees are covered with a fourth separator; The pit is sealed with pit mud.

3. The method for sealing a cellar as described in claim 2, characterized in that, The method for sealing the cellar also includes: After the sealing treatment, the moisture content of the pit mud is controlled within the first threshold range; Seal the gap between the pit mud and the pit pool; When the moisture content of the pit mud decreases to within the second threshold range, the pit mud is covered with a fifth insulating material.

4. The method for sealing a cellar as described in claim 3, characterized in that, Controlling the moisture content of the pit mud to be within the first threshold range includes: The moisture content of the pit mud is detected, and the moisture content of the pit mud is compared with a first threshold range: If the moisture content of the pit mud is within or above the first threshold range, no moisture content adjustment is performed. If the moisture content of the pit mud is lower than the first threshold range, then the moisture content of the pit mud is adjusted to the first threshold range.

5. The method for sealing a cellar as described in claim 3, characterized in that, The first threshold range is 50%–60%, and the second threshold range is 30%–40%.

6. The method for sealing a cellar as described in claim 1, characterized in that, The step of dividing the fermented mash in the fermentation pit into a first zone of fermented mash and a second zone of fermented mash includes: The mash within a first distance from the inner wall of the fermentation pit is designated as the first partition mash, and the remaining mash in the fermentation pit is designated as the second partition mash. The first distance is 30cm–40cm.

7. The method for sealing a cellar as described in claim 1, characterized in that, The process of dividing the fermented mash into a first section and a second section includes: The highest point of the first section of fermented mash is arranged to be 20cm–25cm lower than the highest point of the second section of fermented mash; After the compaction process, the highest point of the first partition of the fermented mash drops by 10cm–20cm.

8. A method for sealing a cellar as described in any one of claims 1 to 6, characterized in that, The first separator is rice husk, and the amount of the first separator used is 4kg–6kg; And / or, the second separator is a mother trough, the thickness of the second separator is 8cm–10cm, and the width of the second separator is 6cm–8cm; And / or, the third separator is a burlap sack soaked in tail liquor, the tail liquor having an alcohol content of 45% vol–50% vol, and the amount of tail liquor used being 8 kg–10 kg.

9. A method for making wine, characterized in that, The method includes a method for sealing a fermentation pit as described in any one of claims 1 to 8, wherein the method is used to reduce the amount of moldy residue produced during fermentation of mash in the fermentation pit.

10. A method for making wine as described in claim 9, characterized in that, The brewing method further includes: a method for treating moldy lees, which includes the following steps: The fermented mash is removed from the pit, and the moldy mash is obtained. Based on the amount of mold, the moldy mash is divided into moldy mash with different degrees of mold growth. Different treatment methods are used to treat the moldy residue based on the different degrees of mold growth.

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