Preparation method of plateau high-protein pure milk

Abstract

The invention provides a preparation method of plateau high-protein pure milk, and belongs to the field of pure milk preparation, and the preparation method of the plateau high-protein pure milk comprises the specific steps of stock solution collection, preheating filtration, sterilization, ultrafiltration, high-temperature sterilization, milk film removal, vacuum cooking and filling. According to the reasonable pure milk preparation method provided by the invention, the filtering effect of the pure milk is improved by sequentially carrying out centrifugal separation, pasteurization and reverse osmosis filtration in the step 3 of degerming in the preparation process, and on the basis, the filtering effect of the pure milk is improved by carrying out high-pressure filtration and nanofiltration in the step 4; according to the invention, the purification quality of the pure milk is improved, the milk film on the surface of the pure milk is cleaned after the pure milk is cooled, and finally, the sterilization effect of the pure milk is improved through vacuum cooking, so that the quality guarantee period of the pure milk is achieved, and the beneficial effects of the pure milk during drinking are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pure milk preparation, and in particular relates to a method for preparing high-altitude high-protein pure milk. Background Art

[0002] Over the past decade, high-end pure milk has been showing a rapid growth trend and is the main dairy product category that drives the upgrading of the dairy industry and improves corporate benefits. The main characteristics of high-end pure milk include high milk protein content, high whole milk solids content, rich milk flavor and rich nutrition. Milk per unit volume or unit weight contains more nutrition than ordinary milk. The existing preparation method of high-protein pure milk is easily affected by the preparation process after preparation, resulting in a short shelf life and easily affecting the beneficial effects of pure milk after drinking. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a method for preparing high-altitude high-protein pure milk. By improving the preparation method during the preparation process, the purpose of extending the shelf life and improving the beneficial effects of pure milk after drinking is achieved.

[0004] A method for preparing high-altitude high-protein pure milk specifically comprises the following steps:

[0005] Step 1: Collect the stock solution, using a container to collect the pure milk stock solution;

[0006] Step 2: Preheating and filtering, use a filter to filter the collected pure milk liquid, and use a preheating tool to preheat the filtered pure milk after filtering;

[0007] Step 3: Sterilization: After the pure milk is preheated, use centrifugal equipment to separate it, and then heat and sterilize the pure milk after separation. After heating and sterilization, use filtering equipment to filter the pure milk;

[0008] In step three sterilization, the first step is centrifugal sterilization, where the preheated pure milk is injected into a suitable centrifugal device, and the centrifugal device is operated, and the centrifugal separation is achieved through the power generated by the centrifugal device;

[0009] The second step is pasteurization, which is to put the separated pure milk into a suitable container and then use a heating tool to heat it to achieve the sterilization of the pure milk;

[0010] The third step is reverse osmosis filtration. After sterilization, reverse osmosis tools are used to perform reverse osmosis filtration on the sterilized pure milk.

[0011] Step 4: Ultrafiltration: After filtering the pure milk, use high-pressure filtration equipment to perform high-pressure filtration on the pure milk, and use a tool with a nanofiltration membrane element to perform nanofiltration after high-pressure filtration;

[0012] In step 4 ultrafiltration, the first step is high pressure filtration. After reverse osmosis filtration, high pressure equipment is used to perform high pressure filtration on pure milk to improve the filtration effect of pure milk;

[0013] The second step is nanofiltration. After high-pressure filtration of pure milk, nanofiltration tools are used to perform nanofiltration on the pure milk to improve the filtration and purification effect of pure milk.

[0014] Step 5: high temperature sterilization. After the pure milk is nanofiltered, the filtered pure milk is placed in a high pressure container and stored, heated and sterilized using the high pressure container.

[0015] Step 6: Remove the milk film. After high-pressure sterilization, open the high-pressure container, and then replace it with a suitable container to store the pure milk. During the storage process, cool the pure milk. During the cooling process, the milk film formed during the cooling process will appear on the surface of the pure milk, and then use appropriate tools to salvage and clean up the milk film.

[0016] In step 6 of removing the milk film, the first step is cooling, placing the sterilized pure milk into a suitable container for cooling;

[0017] The second step is conjunctiva, during the cooling process of pure milk, a milk film is formed on the surface of the pure milk;

[0018] The third step is cleaning. After the milk film is formed, use appropriate tools to clean the milk film.

[0019] Step 7: Vacuum cooking. After cleaning the milk film, put the pure milk into a suitable container, and then use a vacuum device to vacuum the container to achieve vacuum work of the pure milk, and then use a heating tool to perform vacuum cooking after vacuuming;

[0020] In step seven, vacuum cooking, the first step is sealed storage. After cleaning the milk film, a sealed storage container is used to seal and store pure milk.

[0021] The second step is vacuum. During the sealed storage process, a vacuum tool is used to vacuum the container to achieve vacuum storage.

[0022] The third step is heating and steaming. During the vacuum storage process, a heating tool is used to heat the sealed storage container to achieve the purpose of vacuum steaming and sterilization.

[0023] Step 8: Filling. After vacuum cooking, use the container to cool the pure milk, and use the filling equipment to fill the pure milk after cooling.

[0024] Preferably, in step three, in the second pasteurization step, the temperature is controlled between sixty and seventy degrees.

[0025] Preferably, in step four, the pressure in the first high-pressure filtration step is controlled between 500 Pa and 1,000 Pa.

[0026] Preferably, in step five, high temperature sterilization, the temperature is controlled between 130 degrees and 180 degrees and the time is controlled within 10 seconds.

[0027] Preferably, in step six, during the first cooling step, the minimum temperature is controlled to be above thirty degrees.

[0028] Compared with the prior art, the present invention has the following beneficial effects: since the preparation method of the plateau high-protein pure milk of the present invention is widely used in the field of pure milk preparation. The present invention provides a reasonable method for preparing pure milk, which improves the filtration effect of pure milk by sterilizing in step three during the preparation process, centrifugation, pasteurization and reverse osmosis filtration in sequence, and on this basis, after high-pressure filtration and nanofiltration in step four, the filtration effect of pure milk is improved, the purification quality of pure milk is improved, and then after cooling, the milk film on the surface of the pure milk is cleaned, and finally, the sterilization effect of pure milk is improved by vacuum cooking, so as to achieve the shelf life of pure milk and improve the beneficial effect of pure milk when drinking. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a flow chart of the preparation method of plateau high-protein pure milk.

[0030] Figure 2 It is a sterilization flow chart.

[0031] Figure 3 It is the ultrafiltration flow chart.

[0032] Figure 4 It is a flow chart for removing milk film.

[0033] Figure 5 It is a vacuum cooking flow chart. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings:

[0035] In the figure:

[0036] As attached Figures 1 to 5 Shown

[0037] A method for preparing high-altitude high-protein pure milk specifically comprises the following steps:

[0038] S101: collecting the raw liquid, using a container to collect the pure milk raw liquid;

[0039] S102: preheating and filtering, filtering the collected pure milk liquid using a filter sheet, and preheating the filtered pure milk using a preheating tool after filtering;

[0040] S103: sterilization, after the pure milk is preheated, a centrifugal device is used to perform separation work, and after separation, the pure milk is heated and sterilized, and after heating and sterilization, a filtering device is used to filter the pure milk;

[0041] In S103 sterilization, S301, centrifugal sterilization, the preheated pure milk is injected into a suitable centrifugal device, and the centrifugal device is operated, and the centrifugal separation work is achieved through the power generated by the centrifugal device;

[0042] S302, pasteurization, putting the separated pure milk into a suitable container, and then heating it with a heating tool to achieve pasteurization of the pure milk;

[0043] S303, reverse osmosis filtration, after sterilization, using a reverse osmosis tool to perform reverse osmosis filtration on the sterilized pure milk;

[0044] S104: Ultrafiltration, after filtering the pure milk, use a high-pressure filtration device to perform high-pressure filtration on the pure milk, and after high-pressure filtration, use a tool with a nanofiltration membrane element to perform nanofiltration;

[0045] In S104 ultrafiltration, S401, high pressure filtration, after reverse osmosis filtration, high pressure equipment is used to perform high pressure filtration on pure milk to improve the filtration effect of pure milk;

[0046] S402, nanofiltration, after high-pressure filtration of pure milk, nanofiltration is performed on the pure milk using a nanofiltration tool to improve the filtration and purification effect of the pure milk;

[0047] S105: high temperature sterilization, after the pure milk is nanofiltered, the filtered pure milk is placed in a high pressure container, and the high pressure container is used for storage, heating and sterilization;

[0048] S106: removing the milk film, opening the high-pressure container after high-pressure sterilization, and replacing it with a suitable container to store the pure milk, and cooling the pure milk during the storage process, and allowing the milk film formed during the cooling process to appear on the pure milk, and then using a suitable tool to salvage and clean the milk film;

[0049] In S106, removing the milk film, S601, cooling, putting the sterilized pure milk into a suitable container for cooling;

[0050] S602, conjunctiva, during the cooling process of pure milk, a milk film is formed on the surface of the pure milk;

[0051] S603, cleaning: after the milk film is formed, use a suitable tool to clean the milk film;

[0052] S107: vacuum cooking, after cleaning the milk film, putting the pure milk into a suitable container, and then using a vacuum device to vacuum the container to achieve vacuum work of the pure milk, and then using a heating tool to perform vacuum cooking after vacuuming;

[0053] In S107 vacuum cooking, S701, sealed storage, after cleaning the milk film, use a sealed storage container to seal and store pure milk;

[0054] S702, vacuum, during the sealed storage process, a vacuum tool is used to vacuum the container to achieve vacuum storage;

[0055] S703, heating and steaming: during the vacuum storage process, the sealed storage container is heated by a heating tool to achieve the purpose of vacuum steaming and sterilization;

[0056] S108: filling, after vacuum cooking, cooling the pure milk in a container, and filling the pure milk in a filling device after cooling;

[0057] Preferably, in S103, in the S302 pasteurization, the temperature is controlled between sixty and seventy degrees.

[0058] Preferably, in S104, the pressure in the S401 high-pressure filtration is controlled between 500 Pa and 1,000 Pa.

[0059] Preferably, in the high temperature sterilization in S105, the temperature is controlled between 130 degrees and 180 degrees and the time is controlled within ten seconds.

[0060] Preferably, in S106, during the cooling in S601, the minimum temperature is controlled to be above thirty degrees.

[0061] Specific implementation examples

[0062] Embodiment 1: In the preparation process, a pure milk container is used to collect the original juice, and after collection, a filter mesh is used to perform preliminary filtration. After filtration, a preheating tool is used to preheat the pure milk, and the milk is injected into the interior of a centrifugal device for centrifugal separation. After centrifugal separation, a heating tool is used to heat and sterilize the milk, and after sterilization, a reverse osmosis tool is used to perform reverse osmosis filtration. High-pressure filtration and nanofiltration are performed in sequence. After filtering and purifying the pure milk, a high-temperature sterilization tool is used to perform high-temperature sterilization. After high-temperature sterilization, a container is used for cooling, and the minimum temperature is controlled to be above 30 degrees during the cooling process. After conjunctiva, a tool is used to clean the milk film. After cleaning, a sealing tool is used for sealed storage, and vacuum cooking is performed during the sealed storage process. After vacuum cooking, the pure milk is cooled, and a filling tool is used for filling, thereby completing the preparation of pure milk.

[0063] Utilizing the technical solution described in the present invention, or those skilled in the art designing a similar technical solution inspired by the technical solution of the present invention to achieve the above-mentioned technical effects, all fall within the protection scope of the present invention.

Claims

1. A method for preparing high-altitude high-protein pure milk, characterized in that: The preparation method of the plateau high-protein pure milk specifically comprises the following steps: Step 1: Collect the stock solution, using a container to collect the pure milk stock solution; Step 2: Preheating and filtering, use a filter to filter the collected pure milk liquid, and use a preheating tool to preheat the filtered pure milk after filtering; Step 3: Sterilization: After the pure milk is preheated, use centrifugal equipment to separate it, and then heat and sterilize the pure milk after separation. After heating and sterilization, use filtering equipment to filter the pure milk; In step three sterilization, the first step is centrifugal sterilization, where the preheated pure milk is injected into a suitable centrifugal device, and the centrifugal device is operated, and the centrifugal separation is achieved through the power generated by the centrifugal device; The second step is pasteurization, which is to put the separated pure milk into a suitable container and then use a heating tool to heat it to achieve the sterilization of the pure milk; The third step is reverse osmosis filtration. After sterilization, reverse osmosis tools are used to perform reverse osmosis filtration on the sterilized pure milk. Step 4: Ultrafiltration: After filtering the pure milk, use high-pressure filtration equipment to perform high-pressure filtration on the pure milk, and use a tool with a nanofiltration membrane element to perform nanofiltration after high-pressure filtration; In step 4 ultrafiltration, the first step is high pressure filtration. After reverse osmosis filtration, high pressure equipment is used to perform high pressure filtration on pure milk to improve the filtration effect of pure milk; The second step is nanofiltration. After high-pressure filtration of pure milk, nanofiltration tools are used to perform nanofiltration on the pure milk to improve the filtration and purification effect of pure milk. Step 5: high temperature sterilization. After the pure milk is nanofiltered, the filtered pure milk is placed in a high pressure container and stored, heated and sterilized using the high pressure container. Step 6: Remove the milk film. After high-pressure sterilization, open the high-pressure container, and then replace it with a suitable container to store the pure milk. During the storage process, cool the pure milk. During the cooling process, the milk film formed during the cooling process will appear on the surface of the pure milk, and then use appropriate tools to salvage and clean up the milk film. In step 6 of removing the milk film, the first step is cooling, placing the sterilized pure milk into a suitable container for cooling; The second step is conjunctiva, during the cooling process of pure milk, a milk film is formed on the surface of the pure milk; The third step is cleaning. After the milk film is formed, use appropriate tools to clean the milk film. Step 7: Vacuum cooking. After cleaning the milk film, put the pure milk into a suitable container, and then use a vacuum device to vacuum the container to achieve vacuum work of the pure milk, and then use a heating tool to perform vacuum cooking after vacuuming; In step seven, vacuum cooking, the first step is sealed storage. After cleaning the milk film, a sealed storage container is used to seal and store pure milk. The second step is vacuum. During the sealed storage process, a vacuum tool is used to vacuum the container to achieve vacuum storage. The third step is heating and steaming. During the vacuum storage process, a heating tool is used to heat the sealed storage container to achieve the purpose of vacuum steaming and sterilization. Step 8: Filling. After vacuum cooking, use containers to cool the pure milk, and after cooling, use filling equipment to fill the pure milk.

2. The method for preparing high-altitude high-protein pure milk according to claim 1, characterized in that: In step three, in the second pasteurization step, the temperature is controlled between sixty and seventy degrees.

3. The method for preparing high-altitude high-protein pure milk according to claim 1, characterized in that: In step 4, the pressure in the first high-pressure filtration step is controlled between 500 Pa and 1,000 Pa.

4. The method for preparing high-altitude high-protein pure milk according to claim 1, characterized in that: In step five, high temperature sterilization, the temperature is controlled between 130 degrees and 180 degrees and the time is controlled within ten seconds.

5. The method for preparing high-altitude high-protein pure milk according to claim 1, characterized in that: In step six, during the first cooling step, the minimum temperature is controlled to be above thirty degrees.

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