High-temperature-resistant sterilization solid fat mimetic and processing technology thereof

Abstract

The application relates to the technical field of food processing, and discloses a high-temperature-resistant sterilization solid fat simulant which is prepared from the following raw materials: soybean seed coat polysaccharide 3-18 g, locust bean gum 6-9 g, sodium alginate 7-9 g, corn oil 25-40 g, 20 mL of 2-4% (w / v) sodium carbonate solution, and 145-162 g of water, wherein the high-temperature-resistant sterilization solid fat simulant is prepared through the processes of mould feeding, heating forming, cooling, mould discharging, processing and plastic shaping, and cold storage storage to obtain a simulated solid fat finished product. The raw materials of the high-temperature-resistant sterilization solid fat simulant are soybean seed coat polysaccharide, locust bean gum and sodium alginate, and the solid fat simulant is prepared by adding corn oil and a gelling agent, so that the raw materials are convenient and easy to obtain, the production cost is relatively low, the finished product has high thermal stability and high melting point characteristics, can meet the high-temperature sterilization conditions commonly used in meat products, and is not easy to melt under high-temperature processing conditions, so that the high-temperature-resistant sterilization solid fat simulant can be conveniently applied to various products as an ingredient.

Description

A high-temperature sterilization resistant solid fat analog and its processing technology Technical Field

[0001] This invention relates to the field of food processing technology, specifically to a high-temperature sterilization resistant solid fat analog and its processing technology. Background Technology

[0002] In recent years, low-fat products have become increasingly popular among consumers, and fat analogs have become a hot research topic in the food industry. However, common fat analogs on the market often have the defect of a low melting point, which can cause products with added fat analogs to melt and collapse internally during high-temperature sterilization or further processing, thus affecting product quality.

[0003] A search revealed that Chinese patent CN107751978A discloses a compound fat mimicry of barley β-glucan and gluten powder and its preparation method. The method involves mixing and homogenizing extruded gluten powder with an aqueous solution of barley β-glucan to obtain the compound fat mimicry of barley β-glucan and gluten powder.

[0004] The fat analogs prepared by the above methods do not take into account the need for high-temperature sterilization in the further processing of fat analogs. At the same time, Chinese patent CN113973930B discloses a block-shaped fat analog based on long-chain fatty acid liposomes and its preparation method. The temperature used for thermal stability testing of the fat analog prepared by this method is relatively low, and the thermal stability of the prepared product is poor, which cannot meet the standards for wide application. High-temperature sterilization is an important part of food processing and cannot be ignored. Therefore, improving the melting point of fat analogs is of great significance.

[0005] Soybean seed coat polysaccharide is a biomolecule prepared from soybean seed coat. It possesses certain thickening and gelling properties, maintaining protein stability and suspension in various acidic environments. It can emulsify proteins and fats, forming stable emulsions unaffected by acids, alkalis, salts, and temperatures. It can be used as an emulsion stabilizer in products. Soybean seed coat polysaccharide is also a high-quality water-soluble dietary fiber, with a fiber content exceeding 80%. It can be used in various foods and health products that require dietary fiber supplementation, increasing satiety, preventing obesity, and potentially treating some gastrointestinal diseases, while reducing the likelihood of diabetes and colon cancer. Therefore, soybean seed coat polysaccharide has the potential to mimic fats.

[0006] This patent mainly uses soybean seed coat polysaccharide, locust bean gum, and sodium alginate as the main raw materials to explore the effects of different proportions of soybean seed coat polysaccharide on the thermal stability, melting point, and rheological properties of the prepared solid fat mimics. The aim is to enable soybean seed coat polysaccharide to better simulate the state of animal solid fat, so that the fat mimics can meet the high-temperature sterilization conditions, thereby broadening the application range of the fat mimics. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a high-temperature sterilization-resistant solid fat analog and its processing technology, which solves the problem that existing fat analogs do not take into account the need for high-temperature sterilization in further processing, resulting in poor thermal stability of the products.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: a high-temperature sterilization resistant solid fat mimic, which is prepared from the following raw materials: 3-18g of soybean seed coat polysaccharide, 6-9g of locust bean gum, 7-9g of sodium alginate, 25-40g of corn oil, 20mL of sodium carbonate solution with a concentration of 1-3% (w / v), and 145-162g of water.

[0009] A processing method for a high-temperature sterilization resistant solid fat analog includes the following processing steps:

[0010] S1. Place the mixture of soybean seed coat polysaccharide, locust bean gum and sodium alginate into a vacuum high-speed chopper, add water and chop at high speed.

[0011] S2. After the material system has stabilized, add corn oil to the chopping pot and continue chopping for a certain period of time.

[0012] S3. After chopping, add 20 mL of 2-4% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. Control the speed in the pot at 3000 r / min for 3-6 min to obtain a mixture.

[0013] S4. The obtained mixture is molded and heated in a water bath to obtain a composite gel;

[0014] S5. After cooling the prepared composite gel, store it for later use. Subsequently, according to production needs, process the composite gel into different sizes and shapes to obtain the finished product of high-temperature sterilization solid fat analog.

[0015] Preferably, the mass ratio of soybean seed coat polysaccharide in the final mixed gel powder is 0, 1 / 7, 1 / 4, 1 / 3, or 1 / 2 (w / w).

[0016] Preferably, in step S1, the speed of the vacuum high-speed chopper is 3000 r / min, and the chopping time is 3 to 6 min.

[0017] Preferably, in step S2, the speed of the vacuum high-speed chopper is 3000 r / min, and the chopping time is 3 to 6 min.

[0018] Preferably, in step S4, the water bath heating temperature is 90–95°C, and the heating time is 45–60 min.

[0019] Preferably, in step S5, the specific steps for cooling and storing the composite gel are as follows: first, allow the gel to reach room temperature, and then place it in a temperature environment of 2-4°C for storage.

[0020] This invention provides a high-temperature sterilization-resistant solid fat analog and its processing technology. It has the following beneficial effects:

[0021] 1. The solid fat mimic prepared by this invention solves the problems of low melting temperature and instability and easy decomposition of other polysaccharide gel fat mimics when exposed to high heat. This solid fat mimic has high thermal stability and high melting point, which can meet various processing and high-temperature sterilization conditions in the process of further processing into products, reduce losses, and keep the overall product stable.

[0022] 2. The solid fat mimic prepared by this invention mainly uses soybean seed coat polysaccharide, locust bean gum, and sodium alginate as raw materials, supplemented with a small amount of corn oil and a gelling agent. The raw materials are readily available, the production cost is low, and the process is simple. This solid fat mimic has a high dietary fiber content, which can regulate intestinal flora, promote digestion, and prevent obesity, thus giving it certain application value. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1:

[0025] This invention provides a high-temperature sterilization resistant solid fat analog, which is prepared from the following raw materials and excipients, including: 3g soybean seed coat polysaccharide, 9g locust bean gum, 9g sodium alginate, 40g corn oil, 20mL 3% (w / v) sodium carbonate solution, and 162g water.

[0026] Furthermore, the preparation process of the high-temperature sterilization resistant solid fat analog provided in this embodiment is as follows:

[0027] S1. Place the mixture of soybean seed coat polysaccharide, locust bean gum and sodium alginate into a vacuum high-speed chopper, add water and chop at high speed. In this step, the chopping speed is 3000 r / min and the time is 3 min.

[0028] S2. After the material system has stabilized, add corn oil to the chopping pot and continue chopping for 3 minutes, keeping the chopping speed at 3000 r / min.

[0029] S3. After chopping, add 20 mL of 3% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. The speed inside the pot is controlled at 3000 r / min for 3 min, and then a mixture is obtained.

[0030] S4. The obtained mixture is molded and heated in a water bath to obtain a composite gel. In this step, the water bath heating temperature is controlled at 90℃ and the heating time is controlled at 60min.

[0031] S5. After cooling the prepared composite gel, store it for later use. The refrigeration temperature is controlled at 4℃. Subsequently, the composite gel is processed into different sizes and shapes according to production needs to obtain the finished product of high-temperature sterilization solid fat analog.

[0032] Example 2:

[0033] This invention provides a high-temperature sterilization resistant solid fat analog, which is prepared from the following raw materials and excipients, including: 6g soybean seed coat polysaccharide, 9g locust bean gum, 9g sodium alginate, 40g corn oil, 20mL 3% (w / v) sodium carbonate solution, and 162g water.

[0034] Furthermore, the preparation process of the high-temperature sterilization resistant solid fat analog provided in this embodiment is as follows:

[0035] S1. Place the mixture of soybean seed coat polysaccharide, locust bean gum and sodium alginate into a vacuum high-speed chopper, add water and chop at high speed. In this step, the chopping speed is 3000 r / min and the time is 3 min.

[0036] S2. After the material system has stabilized, add corn oil to the chopping pot and continue chopping for 3 minutes, keeping the chopping speed at 3000 r / min.

[0037] S3. After chopping, add 20 mL of 3% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. The speed inside the pot is controlled at 3000 r / min for 3 min, and then a mixture is obtained.

[0038] S4. The obtained mixture is molded and heated in a water bath to obtain a composite gel. In this step, the water bath heating temperature is controlled at 90℃ and the heating time is controlled at 60min.

[0039] S5. After cooling the prepared composite gel, store it for later use. The refrigeration temperature is controlled at 4℃. Subsequently, the composite gel is processed into different sizes and shapes according to production needs to obtain the finished product of high-temperature sterilization solid fat analog.

[0040] Example 3:

[0041] This invention provides a high-temperature sterilization resistant solid fat analog, which is prepared from the following raw materials and excipients, including: 9g soybean seed coat polysaccharide, 9g locust bean gum, 9g sodium alginate, 40g corn oil, 20mL 3% (w / v) sodium carbonate solution, and 162g water.

[0042] Furthermore, the preparation process of the high-temperature sterilization resistant solid fat analog provided in this embodiment is as follows:

[0043] S1. Place the mixture of soybean seed coat polysaccharide, locust bean gum and sodium alginate into a vacuum high-speed chopper, add water and chop at high speed. In this step, the chopping speed is 3000 r / min and the time is 3 min.

[0044] S2. After the material system has stabilized, add corn oil to the chopping pot and continue chopping for 3 minutes, keeping the chopping speed at 3000 r / min.

[0045] S3. After chopping, add 20 mL of 3% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. The speed inside the pot is controlled at 3000 r / min for 3 min, and then a mixture is obtained.

[0046] S4. The obtained mixture is molded and heated in a water bath to obtain a composite gel. In this step, the water bath heating temperature is controlled at 90℃ and the heating time is controlled at 60min.

[0047] S5. After cooling the prepared composite gel, store it for later use. The refrigeration temperature is controlled at 4℃. Subsequently, the composite gel is processed into different sizes and shapes according to production needs to obtain the finished product of high-temperature sterilization solid fat analog.

[0048] Example 4:

[0049] This invention provides a high-temperature sterilization resistant solid fat analog, which is prepared from the following raw materials and excipients, including: 18g soybean seed coat polysaccharide, 9g locust bean gum, 9g sodium alginate, 40g corn oil, 20mL 3% (w / v) sodium carbonate solution, and 162g water.

[0050] Furthermore, the preparation process of the high-temperature sterilization resistant solid fat analog provided in this embodiment is as follows:

[0051] S1. Place the mixture of soybean seed coat polysaccharide, locust bean gum and sodium alginate into a vacuum high-speed chopper, add water and chop at high speed. In this step, the chopping speed is 3000 r / min and the time is 3 min.

[0052] S2. After the material system has stabilized, add corn oil to the chopping pot and continue chopping for 3 minutes, keeping the chopping speed at 3000 r / min.

[0053] S3. After chopping, add 20 mL of 3% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. The speed inside the pot is controlled at 3000 r / min for 3 min, and then a mixture is obtained.

[0054] S4. The obtained mixture is molded and heated in a water bath to obtain a composite gel. In this step, the water bath heating temperature is controlled at 90℃ and the heating time is controlled at 60min.

[0055] S5. After cooling the prepared composite gel, store it for later use. The refrigeration temperature is controlled at 4℃. Subsequently, the composite gel is processed into different sizes and shapes according to production needs to obtain the finished product of high-temperature sterilization solid fat analog.

[0056] Comparative example:

[0057] A heat-resistant and sterilizable solid fat analogue is prepared from the following raw and auxiliary materials: 9g locust bean gum, 9g sodium alginate, 40g corn oil, 20mL 3% (w / v) sodium carbonate solution, and 162g water.

[0058] Furthermore, the high-temperature sterilization resistant solid fat mimic provided in this comparative example includes the following preparation steps:

[0059] Step 1: Using a vacuum high-speed chopper, mix the powdered raw materials of locust bean gum and sodium alginate with 162g of water at a speed of 3000r / min for 3min.

[0060] Step 2: After the system has stabilized, add 40g of corn oil and then chop at 3000r / min for 3min;

[0061] Step 3: Add 20 mL of 3.00% (w / v) sodium carbonate solution and homogenize at 3000 r / min for 3 min.

[0062] Step 4: Pour the mixture into a mold and heat it in a water bath at 90°C for 60 minutes.

[0063] Step 5: Cool the prepared composite gel to room temperature and store it at 4°C for later use. Process the gel into different sizes and shapes according to production needs to obtain the finished product of solid fat analog that can withstand high temperature sterilization.

[0064] The invention will be further described below with reference to specific performance tests:

[0065] Method for determining the thermal stability of fat analogs: Weigh 5g of the composite gel samples provided in Examples 1-4 and comparative examples into centrifuge tubes, heat in a water bath at 90°C for 30min, wipe the liquid precipitated on the sample surface dry, weigh and record the mass of the solid portion of the sample, and repeat the measurement three times for each group of samples.

[0066] DSC assay method for fat mimics: Weigh approximately 4 mg of sample and record its exact mass to three decimal places. Seal the sample in an aluminum crucible and incubate at room temperature for approximately 5 minutes. Use an empty sealed aluminum crucible as a control. Use nitrogen as a protective gas. 气体 The flow rate was 20 mL / min, and the temperature range was 70–200 °C. 升温 The speed is 10℃ / min. Before each formal measurement, the sample chamber is run empty to evaporate the moisture. Each group of samples is measured three times.

[0067] 1. High-temperature thermal stability analysis of solid fat simulants:

[0068] Please refer to Table 1. When the fat mimic is heated to 90℃, the gel undergoes some melting. However, within the same heating time, the thermal stability of the solid fat mimic containing soybean seed coat polysaccharide is significantly better than that of the control group without soybean seed coat polysaccharide. Furthermore, the thermal stability of the fat mimic significantly increases with the increase of soybean seed coat polysaccharide (p<0.05). This is because the interaction between soybean seed coat polysaccharide, locust bean gum, and sodium alginate forms a denser three-dimensional spatial structure, which gives the fat substitute excellent gelling properties, thereby enhancing its high-temperature thermal stability. The melting points of common meat fats are: mutton fat 44-55℃, pork fat 28-48℃, and beef fat 40-50℃. Therefore, fat mimics with added soybean dietary fiber can well meet the needs of production and processing.

[0069] Table 1. Effects of adding different proportions of soybean seed coat polysaccharide (0, 1 / 7, 1 / 4, 1 / 3, 1 / 2) on the high-temperature thermal stability of fat mimics.

[0070]

[0071] Note: Different letters indicate significant differences (p < 0.05).

[0072] 2. DSC analysis of solid fat mimicry:

[0073] The DSC analysis results of solid fat mimics with different proportions of soybean seed coat polysaccharide are shown in Table 2. It can be seen that the endothermic peak at 115.88℃ of the comparative composite gel without soybean seed coat polysaccharide is mainly caused by water evaporation. Even with the addition of a small amount of soybean seed coat polysaccharide, the melting point of the fat mimic increased to 133.25℃.

[0074] As the amount of soybean seed coat polysaccharide added increases, the melting temperature of the fat mimic also gradually increases. The enthalpy changes of the comparative example without added soybean seed coat polysaccharide and Examples 1-4 with added soybean seed coat polysaccharide ratios of 1 / 7, 1 / 4, 1 / 3, and 1 / 2 are 1683 J / g, 1601 J / g, 1562 J / g, 1365 J / g, and 1325 J / g, respectively. According to the melting point data in the table, Examples 1-4 with added soybean seed coat polysaccharide can meet the high-temperature sterilization requirements of 100-121°C in meat processing. The fat mimic provided in the comparative example may melt under high-temperature steam sterilization conditions, which may lead to internal collapse of the product and affect product quality.

[0075] Table 2. Effects of adding different proportions of soybean seed coat polysaccharide (0, 1 / 7, 1 / 4, 1 / 3, 1 / 2) on the melting point and enthalpy change of fat mimics.

[0076]

[0077] Specifically, in the embodiments of the present invention, when using locust bean gum and sodium alginate to simulate solid fat, the addition of soybean seed coat polysaccharide can improve many properties of the composite gel, especially the thermal stability and melting point of the fat simulant. When heated at high temperature, some juice can seep out from the pores of the gel, and the gel as a whole does not collapse and can still maintain its shape. This can better simulate the changes that occur in animal solid meat fat after high-temperature processing.

[0078] Meanwhile, the addition of soybean seed coat polysaccharide has a melting point higher than the general sterilization temperature for meat product processing, ensuring that the product quality remains stable during high-temperature sterilization. Therefore, the high-temperature sterilization resistant solid fat analog provided in this invention has practical guiding significance and reference value for the high-temperature resistance improvement of fat analogs. Moreover, the raw materials for the solid fat analog are readily available and the production cost is low. The finished product has high thermal stability and high melting point characteristics, which can meet the high-temperature sterilization conditions commonly used in meat products. It does not easily melt under high-temperature processing conditions, making it convenient to use as an ingredient in various products.

[0079] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A solid fat mimic that is resistant to high-temperature sterilization, characterized in that, The product is prepared from the following raw materials: 3-18g soybean seed coat polysaccharide, 6-9g locust bean gum, 7-9g sodium alginate, 25-40g corn oil, 20mL of 2-4% (w / v) sodium carbonate solution, and 145-162g water. The solid fat analog comprises the following processing steps: S1, placing the mixture of soybean seed coat polysaccharide, locust bean gum, and sodium alginate into a vacuum high-speed chopper, adding water, and then chopping at high speed. The mass ratio of soybean seed coat polysaccharide in the mixture is 1 / 7, 1 / 4, 1 / 3, and 1 / 2; S2, after the material system stabilizes... Add corn oil to the chopping pot and continue chopping for a certain time; S3, after chopping, add 20 mL of 2-4% (w / v) sodium carbonate solution to the vacuum high-speed chopping pot and homogenize. Control the speed in the pot at 3000 r / min for 3-6 min to obtain a mixture; S4, put the obtained mixture into a mold and heat it in a water bath to obtain a composite gel; S5, cool the prepared composite gel and store it for later use. According to production needs, the composite gel will be processed into different sizes and shapes to obtain the high-temperature sterilization solid fat analog product.

2. The high-temperature sterilization resistant solid fat analog according to claim 1, characterized in that, In step S1, the speed of the vacuum high-speed chopper is 3000 r / min, and the chopping time is 3 to 6 min.

3. The high-temperature sterilization resistant solid fat analog according to claim 1, characterized in that, In step S2, the speed of the vacuum high-speed chopper is 3000 r / min, and the chopping time is 3 to 6 min.

4. The high-temperature sterilization resistant solid fat analog according to claim 1, characterized in that, In step S4, the water bath heating temperature is 90–95°C, and the heating time is 45–60 min.

5. A high-temperature sterilization resistant solid fat analog according to claim 1, characterized in that, In step S5, the specific steps for cooling and storing the composite gel are as follows: first, allow the gel to reach room temperature, and then place it in a temperature environment of 2-4°C for storage.

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