阅读说明：本技术 一种腊肉制品的制备方法、以及自加热食品 (Preparation method of preserved meat product and self-heating food ) 是由 王海滨 董雪 李晚成 廖鄂 陈季旺 于 2021-02-01 设计创作，主要内容包括：本发明公开一种腊肉制品的制备方法、以及自加热食品,涉及肉制品加工技术领域。其中,所述腊肉制品的制备方法包括以下步骤：将氯化钠和氯化钾配制成复配盐；将所述复配盐、白砂糖、十三香、辣椒粉、料酒混匀,制成腌制剂；取猪的后腿肉,将其切成肉块,将所述腌制剂涂抹于所述肉块表面,在0～4℃下腌制3～5天；将腌制后的肉块放入烟熏液中浸泡120～180min,得到烟熏肉；将所述烟熏肉在45～55℃下均匀烘烤,得到腊肉制品。该制备方法绿色环保、生产周期短,适合大规模生产,且制得的腊肉制品营养健康、口感优良,保藏时间长。(The invention discloses a preparation method of a preserved meat product and a self-heating food, and relates to the technical field of meat product processing. The preparation method of the preserved meat product comprises the following steps: preparing sodium chloride and potassium chloride into compound salt; uniformly mixing the compound salt, the white granulated sugar, the thirteen spices, the chilli powder and the cooking wine to prepare a curing agent; taking the back leg meat of the pig, cutting the back leg meat into meat blocks, coating the curing agent on the surfaces of the meat blocks, and curing for 3-5 days at the temperature of 0-4 ℃; soaking the cured meat blocks in smoking liquid for 120-180 min to obtain smoked meat; and uniformly baking the smoked meat at 45-55 ℃ to obtain a preserved meat product. The preparation method is environment-friendly, short in production period and suitable for large-scale production, and the prepared preserved meat product is nutritional and healthy, has excellent taste and long preservation time.)

1. A preparation method of a preserved meat product is characterized by comprising the following steps:

preparing sodium chloride and potassium chloride into compound salt;

uniformly mixing the compound salt, the white granulated sugar, the thirteen spices, the chilli powder and the cooking wine to prepare a curing agent;

taking the back leg meat of the pig, cutting the back leg meat into meat blocks, coating the curing agent on the surfaces of the meat blocks, and curing for 3-5 days at the temperature of 0-4 ℃;

soaking the cured meat blocks in smoking liquid for 120-180 min to obtain smoked meat;

and uniformly baking the smoked meat at 45-55 ℃ to obtain a preserved meat product.

2. The method for preparing the preserved meat product as claimed in claim 1, wherein the mass ratio of the sodium chloride to the potassium chloride in the complex salt is (6-8): (2-3.5).

3. The method for preparing a preserved meat product as claimed in claim 1, wherein the curing agent is added to every 100 parts of the ham meat and comprises the following components in parts by mass: 2-4 parts of compound salt, 3-5 parts of white granulated sugar, 0.3-0.5 part of thirteen spices, 0.6-1 part of chilli powder and 0.2-0.5 part of cooking wine.

4. The method for preparing a preserved meat product as claimed in claim 3, wherein the curing agent is added to every 100 parts of the back leg meat and comprises the following components in parts by mass: 3 parts of compound salt, 4 parts of white granulated sugar, 0.4 part of thirteen spices, 0.8 part of chilli powder and 0.4 part of cooking wine.

5. The method for preparing a preserved meat product as claimed in claim 1, wherein the step of cutting the ham meat of a pig into meat pieces, applying the curing agent to the surface of the meat pieces, and curing at 0-4 ℃ for 3-5 days comprises:

the mass of each meat block is 150-200 g.

6. The method for preparing a preserved meat product as claimed in claim 5, wherein the meat piece has a length of 18 to 22cm, a width of 2 to 5cm and a thickness of 1 to 1.5 cm.

7. The method for preparing a preserved meat product as claimed in claim 1, wherein the step of soaking the cured meat pieces in a liquid smoke for 150min to obtain a smoked meat comprises:

and adding 3-6 parts of smoking liquid into every 100 parts of the back leg meat.

8. The method for preparing the preserved meat product as claimed in claim 1, wherein the step of uniformly baking the smoked meat at 45-55 ℃ to obtain the preserved meat product comprises the following steps:

the baking time is 20-36 h.

9. A self-heating food product comprising a bacon product produced by the method of any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of meat product processing, in particular to a preparation method of a preserved meat product and a self-heating food.

Background

The preserved meat is a prominent representative of the traditional preserved meat products in China, has a long history, starts from the Tang dynasty, develops and reaches the peak in the Qing dynasty in the two Song dynasties; still is the valuable food culture heritage in China and even the world at present, and has more dense local characteristics. The preserved meat product is a semi-finished product which is prepared by using fresh and frozen livestock and poultry meat as a raw material, adding salt, sugar, spices and the like as auxiliary materials, and carrying out the processes of pickling, airing, air drying or baking, smoking and the like. The preserved meat is not only simple to prepare and convenient to store, but also contains a large amount of nutrients necessary for human bodies, such as fat, protein, various mineral substances and the like, and is deeply loved by consumers due to the unique preserved flavor and pleasant rose color.

The main component of the salt is NaCl which is an indispensable curing material for curing the preserved meat product, and the sodium salt not only endows the product with typical salty taste, but also contributes to improving the water retention of the meat product and effectively controls the growth of microorganisms in the product; in addition, texture, aroma and flavor during product processing can be improved by affecting the degradation and oxidation of product lipids and proteins. The traditional preserved meat products in China are added with a large amount of sodium salt to inhibit the growth of microorganisms, so that the shelf life of the preserved meat is prolonged, however, the excessive addition of the sodium salt can cause the products to be dry and hard due to serious dehydration, and the excessive intake of the sodium salt can cause great damage to the health of human bodies. Modern medical research finds that the possibility of hypertension and cardiovascular diseases of human bodies can be increased by taking a large amount of salt for a long time, and the world health organization recommends that the daily salt intake of each human body is not higher than 6 g. According to survey, the average daily salt intake of adults in China is 10.5g, nearly one quarter of salt is from various meat products, the average salt intake of residents in south China is 8-9 g/d, and the average salt intake of residents in north China is 12-18 g/d, which obviously exceed the standards recommended by the world health organization.

The salt reduction measure generally adopted at present is to directly reduce the amount of sodium chloride, and although the method can effectively reduce the content of sodium salt in the product, the reduction of the amount of sodium chloride can affect the antiseptic preservation capability of the product, thereby shortening the storage period and deteriorating the quality of the product such as water retention, texture, flavor and the like.

Disclosure of Invention

The invention mainly aims to provide a preparation method of a preserved meat product and a self-heating food, and aims to provide a preserved meat product which has less sodium salt and can ensure preservation time and taste.

In order to achieve the purpose, the invention provides a preparation method of a preserved meat product, which comprises the following steps: preparing sodium chloride and potassium chloride into compound salt;

uniformly mixing the compound salt, the white granulated sugar, the thirteen spices, the chilli powder and the cooking wine to prepare a curing agent;

taking the back leg meat of the pig, cutting the back leg meat into meat blocks, coating the curing agent on the surfaces of the meat blocks, and curing for 3-5 days at the temperature of 0-4 ℃;

soaking the cured meat blocks in smoking liquid for 120-180 min to obtain smoked meat;

and uniformly baking the smoked meat at 45-55 ℃ to obtain a preserved meat product.

Optionally, in the complex salt, the mass ratio of the sodium chloride to the potassium chloride is (6-8): (2-3.5).

Optionally, the curing agent added to every 100 parts of the back leg meat comprises the following components in parts by mass: 2-4 parts of compound salt, 3-5 parts of white granulated sugar, 0.3-0.5 part of thirteen spices, 0.6-1 part of chilli powder and 0.2-0.5 part of cooking wine.

Optionally, the curing agent added to every 100 parts of the back leg meat comprises the following components in parts by mass: 3 parts of compound salt, 4 parts of white granulated sugar, 0.4 part of thirteen spices, 0.8 part of chilli powder and 0.4 part of cooking wine.

Optionally, the step of taking the back leg meat of the pig, cutting the back leg meat into meat blocks, coating the curing agent on the surface of the meat blocks, and curing for 3-5 days at 0-4 ℃ comprises the following steps:

the mass of each meat block is 150-200 g.

Optionally, the meat loaf is 18-22 cm long, 2-5 cm wide and 1-1.5 cm thick.

Optionally, the step of soaking the cured meat pieces in smoking liquid for 150min to obtain smoked meat comprises:

and adding 3-6 parts of smoking liquid into every 100 parts of the back leg meat.

Optionally, the step of uniformly baking the smoked meat at 45-55 ℃ to obtain the preserved meat product comprises the following steps:

the baking time is 20-36 h.

Further, the invention also provides a self-heating food, the self-heating food comprises a preserved meat product, and the preserved meat product is prepared by the preparation method of the preserved meat product.

According to the technical scheme provided by the invention, the compound salt is prepared from sodium chloride and potassium chloride to replace the traditional edible sodium salt, and the nature of the potassium salt is close to that of the sodium salt and has similar salty taste, so that the preparation method provided by the invention reduces the sodium salt content in the prepared preserved meat product, the preserved meat product is healthier to eat, and meanwhile, the preservation time and the edible taste of the preserved meat product are ensured; during pickling, the liquid smoking method is adopted to replace the traditional smoking method, so that the production period is shortened, and meanwhile, the generation of harmful substances and the discharge amount of smoke in the traditional smoking process can be effectively reduced, so that the preparation method provided by the invention is green and environment-friendly, has a short production period, and is suitable for a large-scale preparation process; in addition, the low-temperature condition of the liquid smoking process effectively inhibits the growth and the propagation of microorganisms, thereby prolonging the storage period of the preserved meat product.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flow chart of an embodiment of a method for preparing a bacon product provided by the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.

In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The traditional preserved meat products in China are added with a large amount of sodium salt to inhibit the growth of microorganisms, so that the shelf life of the preserved meat is prolonged, however, the excessive addition of the sodium salt can cause the products to be dry and hard due to serious dehydration, and the excessive intake of the sodium salt can cause great damage to the health of human bodies. Modern medical research finds that the possibility of hypertension and cardiovascular diseases of human bodies is increased by taking a large amount of salt for a long time. The salt reduction measure generally adopted at present is to directly reduce the amount of sodium chloride, and although the method can effectively reduce the content of sodium salt in the product, the reduction of the amount of sodium chloride can affect the antiseptic preservation capability of the product, thereby shortening the storage period and deteriorating the quality of the product such as water retention, texture, flavor and the like.

In view of the above, the invention provides a preparation method of a preserved meat product, and aims to provide a preparation method of a preserved meat product which is short in production period, green, environment-friendly, healthy to eat and long in preservation time. Fig. 1 is a schematic flow diagram of an embodiment of the method for preparing a bacon product of the present invention.

Referring to fig. 1, the preparation method of the bacon product includes the following steps:

and step S10, preparing the sodium chloride and the potassium chloride into compound salt.

At present, the preserved meat products on the market generally have high sodium content, and do not meet the pursuit of modern consumers on healthy diet. In the embodiment, the food-grade sodium and potassium compound salt is used for replacing the traditional single-use sodium salt, so that on the premise of keeping the original quality of the meat product, the sodium salt content in the product is reduced, the potassium ion content is properly increased, and a healthy and delicious novel preserved meat product is provided for part of characteristic consumer groups. Through a large number of theories and experimental verifications, in the embodiment, the mass ratio of the sodium chloride to the potassium chloride in the complex salt is (6-8): (2-3.5), so, the sodium content in the compound salt is reduced, the preserved meat product is more nutritious and healthy, and the taste and the preservation time of the preserved meat product are ensured. Preferably, in the complex salt, the mass ratio of the sodium chloride to the potassium chloride is 7: 3.

and step S20, mixing the compound salt, white granulated sugar, thirteen spices, chili powder and cooking wine uniformly to prepare the curing agent.

In order to make the prepared preserved meat product have good taste and are suitable for the preference of most people, in the embodiment, the curing agent is added into every 100 parts of the ham meat and comprises the following components in parts by mass: 2-4 parts of compound salt, 3-5 parts of white granulated sugar, 0.3-0.5 part of thirteen spices, 0.6-1 part of chilli powder and 0.2-0.5 part of cooking wine. That is, when processing 100g of ham meat, the curing agent is formulated as: 2-4 g of compound salt, 3-5 g of white granulated sugar, 0.3-0.5 g of thirteen spices, 0.6-1 g of chilli powder and 0.2-0.5 g of cooking wine. Wherein, the thirteen spices also called as the ten-full spices refer to 13 Chinese herbal medicines with various characteristic aromas, including fructus amomi, semen Myristicae, cinnamon, clove, pepper, aniseed, common fennel, costustoot, angelica dahurica, rhizoma kaempferiae, galangal, dried ginger and the like.

In specific implementation, the curing agent is prepared according to the proportion of 2-3.5 parts of compound salt, 3-5 parts of white granulated sugar, 0.3-0.5 part of thirteen-spices, 0.6-1 part of chilli powder and 0.2-0.5 part of cooking wine, and the mass of the added curing agent is calculated according to the mass of the back leg meat.

Preferably, the curing agent added into each 100 parts of the back leg meat comprises the following components in parts by mass: 3 parts of compound salt, 4 parts of white granulated sugar, 0.4 part of thirteen spices, 0.8 part of chilli powder and 0.4 part of cooking wine, and at the moment, the cured meat product prepared by the curing agent has the best taste.

And step S30, taking the ham meat of the pig, cutting the ham meat into meat blocks, coating the curing agent on the surface of the meat blocks, and curing for 3-5 days at the temperature of 0-4 ℃.

In order to sufficiently cure the ham meat, the mass of the cut meat pieces is 150 to 200g in the present embodiment. Furthermore, the meat blocks are 18-22 cm long, 2-5 cm wide and 1-1.5 cm thick. It can be understood that the hind leg meat qualified by the sanitary inspection is selected, the fascia on the surface of the hind leg meat is firstly removed, and then the hind leg meat is cut into meat blocks. The back leg meat may be pork, lamb, or beef, as well as beef. The pork has no mutton smell, the taste of the pork accords with the favor of most people, and the price of the pork is cheaper than that of sheep and cattle, so that the pork is the pork of the hind leg of the pig in the embodiment.

And step S40, soaking the cured meat blocks in smoking liquid for 120-180 min to obtain smoked meat.

The smoking process is a crucial step for enhancing the flavor of preserved meat products, the traditional smoking method is to smoke meat products by using smoke generated when various materials such as wood chips are braised, so that organic ingredients are attached to the surfaces of the meat products, the meat products are endowed with unique brown color and smoking flavor, the growth of microorganisms is inhibited, the meat products are prevented from being rotted and deteriorated, but the production period of the method is long, harmful smoke substances generated when wood is burnt can influence the eating safety of the meat products, and the environmental pollution is easily caused.

The liquid smoking method is that smoke components generated by dry distillation of wood are liquefied and processed into liquid smoke by a certain method, and the liquid smoke is firmly combined on the surface of a product by soaking or spraying so as to have certain smoking color and flavor. In the embodiment, the liquid smoking method is adopted to replace the traditional smoking method, so that the generation of harmful substances and the discharge amount of smoke in the traditional smoking process can be effectively reduced, the preparation method provided by the invention is green and environment-friendly, and meanwhile, the flavor of the preserved meat product is improved, and the quality of the preserved meat product is improved.

In order to enable the cured meat blocks to be smoked quickly and avoid waste of raw materials, in this embodiment, 3-6 parts of smoking liquid is added to 100 parts of the back leg meat. Therefore, the cured meat blocks are placed in the smoking liquid to be soaked for 120-180 min, and the smoked meat can be obtained, and the production period is short. In addition, the treatment temperature of the liquid smoking method is lower than that of the smoking method, so that the growth and the propagation of microorganisms are effectively inhibited through the low-temperature condition, and the storage period of the preserved meat product is further prolonged.

And step S50, uniformly baking the smoked meat at the temperature of 45-55 ℃ to obtain a preserved meat product.

In an embodiment, step S50 specifically includes: taking the smoked meat out of the smoking liquid, removing pickling ingredients attached to the surface of the smoked meat, baking the smoked meat in an oven at a baking temperature of 45-55 ℃ preferably (not more than 60 ℃ at most) so as to avoid baking scorched liquid oil, continuously turning the smoked meat during baking to ensure that the heated surface is uniform, sending the baked smoked meat to a drying and ventilating place for hanging after baking is finished, and cooling the meat to room temperature to obtain the bacon product. It should be noted that the baking temperature is not fixed to a specific value, and the duration and degree of heating need to be adjusted at any time according to the meat color during baking to ensure the quality of the preserved meat product. The baking time of the smoked meat is not limited, and in order to make the taste better, in the embodiment, the baking time is 20-36 hours.

Further, in order to facilitate transportation and prolong the storage time, in the present embodiment, after step S50, the method may further include:

and step S60, packaging the preserved meat product.

Specifically, the preserved meat product is weighed and packaged, preferably about 50g per package, and the packaging mode is vacuum packaging. It can be understood that the detection of air leakage in the package bag after packaging requires re-packaging when the seal is irregular or deformed due to too high temperature during sealing.

According to the technical scheme provided by the invention, the compound salt is prepared from sodium chloride and potassium chloride to replace the traditional edible sodium salt, and the nature of the potassium salt is close to that of the sodium salt and has similar salty taste, so that the preparation method provided by the invention reduces the sodium salt content in the prepared preserved meat product, the preserved meat product is healthier to eat, and meanwhile, the preservation time and the edible taste of the preserved meat product are ensured; during pickling, the liquid smoking method is adopted to replace the traditional smoking method, so that the production period is shortened, and meanwhile, the generation of harmful substances and the discharge amount of smoke in the traditional smoking process can be effectively reduced, so that the preparation method provided by the invention is green and environment-friendly, has a short production period, and is suitable for a large-scale preparation process; in addition, the low-temperature condition of the liquid smoking process effectively inhibits the growth and the propagation of microorganisms, thereby prolonging the storage period of the preserved meat product.

In recent years, with the rapid development of the economic level of China and the continuous improvement of the living standard of people, the rhythm of life is faster and faster. The instant food is convenient and fast, and is nutritious and delicious, and becomes the main trend of the development of modern food. Meanwhile, when people play and camp during traveling, people have to eat hot food quickly and conveniently due to no power supply, no fire source or no open fire allowed under natural conditions, and the problem considered by vast office workers and tourists is solved. The preserved meat product contains rich nutritional ingredients such as fat, protein, carbohydrate and the like, but because the preserved meat product is a raw meat product, the pretreatment before eating and cooking are complex and tedious, and the preserved meat product is not convenient for consumers to eat quickly; in addition, the preserved meat product is greasy and not convenient for cold eating.

In view of the above, the present invention also provides a self-heating food, including a preserved meat product, which is prepared by the preparation method of the preserved meat product.

Specifically, the weighed bacon product is cut into slices with uniform size and placed in a self-heating box, then a heating bag and a water bag with proper specifications are placed at the bottom of the self-heating box, and the quicklime in the heating bag can generate exothermic reaction when meeting water, so that the bacon product can be directly eaten after being heated for a proper time.

The self-heating box is made of high-quality food PP materials and comprises a box cover, a base and an inner box, the preserved meat product is placed in the inner box, and the heating bag and the water bag are disassembled and then placed in the base; the heating bag is a special food heating bag and generates an exothermic reaction when meeting water; the water bag adopts purified water, is simple to package and not easy to break, and can well assist the heating agent in the heating bag to heat. It should be noted that the reactants do not contact with the food during the reaction process, and the preserved meat product is completely cooked after a period of heating, and the nutritional ingredients of the preserved meat product are not damaged.

The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, it should be understood that the following examples are merely illustrative of the present invention and are not intended to limit the present invention.

Example 1 preparation of a bacon product

(1) Food-grade sodium chloride and potassium chloride were mixed in a 7: 3 to prepare the compound salt.

(2) Preparation of a curing agent: mixing the compound salt, white granulated sugar, thirteen spices, chilli powder and cooking wine according to a proportion of 3: 4: 0.4: 0.8: 0.4 mass ratio was mixed uniformly.

(3) Selecting qualified pork hind leg meat through sanitary inspection, firstly removing fascia on the surface of the pork hind leg meat, then cutting the pork hind leg meat into meat blocks with the weight of about 150-200 g (per 100g of meat blocks, 8.6g of curing agent is added), wherein the meat blocks are 18-22 cm in length, 2-5 cm in width and 1-1.5 cm in thickness, then uniformly coating the curing agent on the surface of the meat blocks, and curing for 4 days at the temperature of 0 ℃.

(4) And (3) soaking the cured meat blocks in smoking liquid (4 g of smoking liquid is added per 100g of meat blocks) for 150min to obtain smoked meat.

(5) And (3) uniformly baking the smoked meat at 50 ℃ for 28h, and after baking is finished, putting the smoked meat in a dry and ventilated place to cool to room temperature to obtain the preserved meat product.

Example 2 preparation of a bacon product

(1) Food-grade sodium chloride and potassium chloride were mixed in a 6.5: 3.5 to prepare the compound salt.

(2) Preparation of a curing agent: mixing the compound salt, white granulated sugar, thirteen spices, chilli powder and cooking wine according to a proportion of 4: 3: 0.3: 1: 0.5 mass ratio is mixed uniformly.

(3) Selecting qualified pork hind leg meat through sanitary inspection, firstly removing fascia on the surface of the pork hind leg meat, then cutting the pork hind leg meat into meat blocks with the weight of about 150-200 g (per 100g of meat blocks, 8.8g of curing agent is added), wherein the meat blocks are 18-22 cm in length, 2-5 cm in width and 1-1.5 cm in thickness, then uniformly coating the curing agent on the surface of the meat blocks, and curing for 4 days at the temperature of 0 ℃.

(4) And (3) soaking the cured meat blocks in smoking liquid (every 100g of meat blocks is added with 3g of smoking liquid) for 180min to obtain smoked meat.

(5) And (3) uniformly baking the smoked meat at 45 ℃ for 36h, and after baking is finished, putting the smoked meat in a dry and ventilated place to cool to room temperature to obtain the preserved meat product.

Example 3 preparation of a bacon product

(1) Food-grade sodium chloride and potassium chloride are mixed according to the weight ratio of 8: 2 to prepare the compound salt.

(2) Preparation of a curing agent: mixing the compound salt, white granulated sugar, thirteen spices, chilli powder and cooking wine according to a proportion of 2: 5: 0.5: 0.6: 0.2 mass ratio is mixed uniformly.

(3) Selecting qualified pork hind leg meat through sanitary inspection, firstly removing fascia on the surface of the pork hind leg meat, then cutting the pork hind leg meat into meat blocks with the weight of about 150-200 g (per 100g of meat blocks, 8.3g of curing agent is added), wherein the meat blocks are 18-22 cm in length, 2-5 cm in width and 1-1.5 cm in thickness, then uniformly coating the curing agent on the surface of the meat blocks, and curing for 5 days at 4 ℃.

(4) And (3) soaking the cured meat blocks in smoking liquid (6 g of smoking liquid is added per 100g of meat blocks) for 130min to obtain smoked meat.

(5) And (3) uniformly baking the smoked meat at 55 ℃ for 20h, and after baking is finished, putting the smoked meat into a dry and ventilated place to cool to room temperature to obtain the preserved meat product.

Example 4 preparation of a bacon product

(1) Food-grade sodium chloride and potassium chloride were mixed in 6: 4 to prepare the compound salt.

(2) Preparation of a curing agent: mixing the compound salt, white granulated sugar, thirteen spices, chilli powder and cooking wine according to a proportion of 2: 4: 0.5: 0.9: 0.3 mass ratio is mixed uniformly.

(3) Selecting qualified pork hind leg meat through sanitary inspection, firstly removing fascia on the surface of the pork hind leg meat, then cutting the pork hind leg meat into meat blocks with the weight of about 150-200 g (every 100g of meat blocks is added with 7.7g of curing agent), wherein the meat blocks are 18-22 cm in length, 2-5 cm in width and 1-1.5 cm in thickness, then uniformly coating the curing agent on the surface of the meat blocks, and curing for 3 days at the temperature of 2 ℃.

(4) And (3) soaking the cured meat blocks in smoking liquid (5 g of smoking liquid is added per 100g of meat blocks) for 120min to obtain smoked meat.

(5) And (3) uniformly baking the smoked meat at 50 ℃ for 28h, and after baking is finished, putting the smoked meat in a dry and ventilated place to cool to room temperature to obtain the preserved meat product.

Application example 1 preparation of self-heating food

The bacon product prepared in example 1 was weighed out at about 50g, cut into uniform-sized slices and placed in a self-heating box, then a 60 g heating bag was placed at the bottom of the self-heating box, and a 300 g water bag was added, and after heating for 35min, a directly edible self-heating food was obtained.

Application example 2 preparation of self-heating food

The bacon product prepared in example 2 was weighed out at about 50g, cut into uniform-sized slices and placed in a self-heating box, and then a heating bag with a specification of 70 g was placed at the bottom of the self-heating box, and 300 g of water bag was added, and after heating for 30min, a self-heating food for direct eating was obtained.

Application example 3 preparation of self-heating food

The preserved meat product prepared in the example 3 is weighed according to about 50g, cut into slices with uniform size and placed in a self-heating box, then a heating bag with the specification of 70 g is placed at the bottom of the self-heating box, 350 g of water bag is added, and after heating for 35min, the directly edible self-heating food can be obtained.

Application example 4 preparation of self-heating food

The bacon product prepared in example 4 was weighed out at about 50g, cut into uniform-sized slices and placed in a self-heating box, and then 80 g of heating bag was placed at the bottom of the self-heating box, and 350 g of water bag was added, and after heating for 25min, a self-heating food ready for eating was obtained.

The cured meat products obtained in examples 1 to 4 were subjected to measurement of moisture content and texture characteristics (measurement method: moisture: method for measuring moisture content in meat and meat products, texture characteristics: hardness, elasticity, tackiness and chewiness of cured meat products measured using a texture analyzer), and the results are shown in Table 1.

TABLE 1 detection results of water content and texture characteristics of preserved meat

Examples	Moisture content (%)	Hardness (g)	Elasticity	Cohesiveness of	Chewiness (g)
						1	42.96	6020.02	0.74	0.50	2233.91
2	44.50	5892.44	0.73	0.48	2149.20
						3	45.86	5631.71	0.75	0.45	1985.98
4	39.28	6402.27	0.71	0.52	2596.33

As can be seen from table 1, the cured meat products obtained in examples 1 to 4 all had good texture characteristics and moisture content.

(II) evaluation of sensory quality of self-heating food (i.e., self-heating bacon) prepared in application examples 1 to 4

The sensory quality evaluation items include appearance, color, smell, taste and mouthfeel and are scored according to sensory quality scoring standards of the preserved meat shown in the following table 2:

TABLE 2 sensory quality score criteria

The sensory quality score is the sum of the above appearance, color, smell, taste and mouthfeel scores.

A sensory evaluation panel was composed of 30 persons with abundant food expertise and experience, each evaluation was performed by each sensory evaluation person independently without communication with each other, and the samples were rinsed with clean water before evaluation. The self-heating foods prepared according to application examples 1 to 4 were scored for sensory quality according to table 2 and then averaged as reported in table 3 below.

TABLE 3 sensory quality score results

	Scoring
		Application example 1	98
Application example 2	96
		Application example 3	94
Application example 4	95

As can be seen from table 3, the self-heating food obtained in application examples 1 to 4 showed good characteristics in appearance, color, smell, taste and mouthfeel, and since the self-heating food is a preserved meat product, it is demonstrated that the preserved meat product prepared by the present invention has not only unique flavor, but also attractive color, fresh and tender mouthfeel, and has good organoleptic properties.

In conclusion, the preparation method of the preserved meat product provided by the invention prepares the preserved meat product which is nutritional and healthy and has excellent taste through the design of preparation steps, preparation conditions, components and proportion of the curing agent and the like.

The above is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the scope of the present invention.