CN110583954A - Method for sterilizing fruit juice - Google Patents
Method for sterilizing fruit juice Download PDFInfo
- Publication number
- CN110583954A CN110583954A CN201810605880.3A CN201810605880A CN110583954A CN 110583954 A CN110583954 A CN 110583954A CN 201810605880 A CN201810605880 A CN 201810605880A CN 110583954 A CN110583954 A CN 110583954A
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- Prior art keywords
- product
- fruit juice
- steam
- treatment
- flash evaporation
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/16—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials
- A23L3/18—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus
- A23L3/22—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating loose unpacked materials while they are progressively transported through the apparatus with transport through tubes
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Non-Alcoholic Beverages (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Abstract
The invention provides a fruit juice sterilization method, which comprises the steps of carrying out preheating treatment, rapid heating treatment, heat preservation treatment and flash evaporation cooling treatment on fruit juice, wherein a steam generator is adopted to generate steam to directly contact with a product for heat exchange, and a steam ejector pump is combined to carry out flash evaporation cooling treatment on the product, so that the product reaches sterilization temperature in a short time and is cooled in a short time, and the color and flavor of the product can be ensured to the maximum extent; after the product is sterilized in the heat-preserving tank, the product is subjected to flash evaporation cooling by adopting a steam injection pump, so that the sterilized product is prevented from contacting the outside, and the product is prevented from being polluted; in addition, the steam generator is adopted to generate steam to directly contact with the product for heat exchange, so that the larger pressure difference caused by the traditional dividing wall type heating mode is avoided, the pressure bearing capacity required by the equipment is reduced, and the equipment and the production cost are reduced.
Description
Technical Field
The invention relates to a fruit juice production process, in particular to a fruit juice sterilization method.
Background
In the production process of jam and fruit juice products, the essential production process is to kill active enzymes and microorganisms in the products. The method of heating is used for killing microorganisms and active enzymes in the product and ensuring that the product is not rotten after being stored for a long time, and is defined as product sterilization or pasteurization.
In the conventional sterilization process, a dividing wall type heating and cooling method is generally adopted. The sterilization machine generally uses a sleeve type heater, a holding pipe and a cooler. The traditional sterilization process and the sterilization machine are adopted, the time from heating to final cooling needs 12-15 minutes, the color and the flavor of the product can be greatly changed due to long-time cooling, the heating time of the product cannot be controlled, the heating time is too long, the taste, the color and the flavor of the product can be influenced, even scorching can be caused, the heating time is too short, and the product cannot be sterilized thoroughly. In addition, because the resistance of each pipeline of the equipment is large due to the adoption of a sleeve type heater, a holding pipe and a cooler in the prior art, the high-viscosity product is conveyed, the pressure resistance of the equipment such as a pipe and a tank and the lift provided by a pump are higher in requirements, and the production general category of the product is limited to a certain extent.
Disclosure of Invention
The invention aims to provide a fruit juice sterilization method which has controllable heating time, can keep the original color and flavor of fruit juice and has low requirement on the pressure bearing capacity of equipment.
The invention provides a fruit juice sterilization method, which comprises the following steps:
the method comprises the following steps: preheating the fruit juice;
step two: mixing the preheated fruit juice obtained in the first step with hot steam to enable the fruit juice to reach the sterilization temperature quickly;
step three: performing heat preservation and sterilization treatment on the fruit juice obtained in the second step;
step four: and D, carrying out flash evaporation cooling treatment on the fruit juice obtained in the third step.
Preferably, the heating time in the second step is 2 s.
Preferably, the heat preservation time in the third step is 1-8 minutes.
Preferably, in the fourth step, the juice obtained in the third step is subjected to flash evaporation cooling treatment by using a steam vacuum ejector pump.
The invention provides a fruit juice sterilization method which is implemented by a fruit juice sterilization device, wherein the fruit juice sterilization device comprises a heating tank, a liquid inlet of the heating tank is arranged at the bottom of the heating tank, a liquid outlet of the heating tank is arranged at the top of the heating tank, and a steam inlet is arranged in the middle of the heating tank. The fruit juice degerming device also comprises a preheater, a steam generator, a heat preservation tank, a flash evaporator and a steam injection vacuum pump. The pre-heater includes a pre-heater inlet and a pre-heater liquid outlet, the pre-heater liquid outlet through a fifth pipeline with the heating jar inlet is connected. The top of the steam generator is provided with a steam outlet, and the steam outlet is connected with the steam inlet of the heating tank through a first pipeline. The bottom of the heat-preserving tank is provided with a heat-preserving tank inlet, the top of the heat-preserving tank is provided with a heat-preserving tank liquid outlet, and the heat-preserving tank inlet is connected with the heating tank liquid outlet through a second pipeline. The flash evaporator top is provided with a flash steam export, and its bottom is provided with a flash evaporator inlet and a flash evaporator liquid outlet, the flash evaporator inlet through a third pipeline with the holding vessel liquid outlet is connected. The steam injection vacuum pump comprises a steam injection inlet, and the steam injection inlet is connected with the flash steam outlet through a fourth pipeline.
And one side of the flash evaporator is provided with a pressure gauge for monitoring the pressure change in the flash evaporator and adjusting the temperature of the flash evaporator during flash evaporation cooling by adjusting the pressure change in the flash evaporator.
According to the fruit juice sterilization method provided by the invention, in the second step, steam generated by a steam generator is directly contacted with a product for heat exchange, and a steam ejector pump is used for carrying out flash evaporation cold treatment on the product in combination with the fourth step, so that the product reaches sterilization temperature in a short time and is cooled in a short time, and the color and flavor of the product can be ensured to the maximum extent; the product is subjected to flash evaporation cooling by adopting a steam injection pump, so that the sterilized product is prevented from contacting the outside, and the product is prevented from being polluted; in addition, step four adopts steam generator to produce steam and product direct contact heat transfer avoided the great pressure differential that traditional dividing wall formula heating method brought, has reduced the pressure-bearing capacity that equipment needs, has reduced manufacturing cost.
Drawings
FIG. 1 is a flow chart of a method of a juice sterilization apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a juice sterilization apparatus according to a first embodiment of the present invention.
Detailed Description
The embodiments described below are only a part of the embodiments of the present invention, and not all of them. 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.
Referring to fig. 1 and 2, the present embodiment provides a fruit juice sterilizing method, which includes the following steps:
the method comprises the following steps: preheating the fruit juice;
step two: mixing the preheated fruit juice obtained in the first step with hot steam to enable the fruit juice to reach the sterilization temperature quickly;
step three: performing heat preservation and sterilization treatment on the fruit juice obtained in the second step;
step four: and D, carrying out flash evaporation cooling treatment on the fruit juice obtained in the third step.
In this embodiment, the heating time in the second step is 2 s; the heat preservation time in the third step is 1-8 minutes; and step four, carrying out flash evaporation cooling treatment on the fruit juice obtained in the step three by adopting a steam vacuum ejector pump 5.
The embodiment provides a fruit juice degerming method, which is implemented by a fruit juice degerming device, and comprises a preheater 8, a heating tank 1, a steam generator 2, an insulation tank 3, a flash evaporator 4 and a steam injection vacuum pump 5. The bottom of the heating tank 1 is provided with a heating tank liquid inlet 11, the top is provided with a heating tank liquid outlet 12, and the middle part is provided with a steam inlet 13. The preheater 8 comprises a preheater liquid inlet 81 and a preheater liquid outlet 82, and the preheater liquid outlet 82 is connected with the heating tank liquid inlet 11 through a fifth pipeline 75. The top of the steam generator 2 is provided with a steam outlet 21, and the steam outlet 21 is connected with the steam inlet 13 of the heating tank 1 through a first pipeline 71. The bottom of the heat-preserving tank 3 is provided with a heat-preserving tank inlet 31, the top of the heat-preserving tank is provided with a heat-preserving tank outlet 32, and the heat-preserving tank inlet 31 is connected with the heating tank outlet 12 through a second pipeline 72. The top of the flash evaporator 4 is provided with a flash evaporation steam outlet 42, the bottom of the flash evaporator is provided with a flash evaporator liquid inlet 43 and a flash evaporator liquid outlet 41, and the flash evaporator liquid inlet 43 is connected with the heat preservation tank liquid outlet 32 through a third pipeline 73. The steam injection vacuum pump 5 comprises a steam injection inlet 51, and the steam injection inlet 51 is connected with the flash steam outlet 42 through a fourth pipeline 74.
A pressure gauge 44 is arranged on one side of the flash evaporator 4 and used for monitoring the pressure change in the flash evaporator 4, and the temperature of the flash evaporator 4 during flash evaporation cooling can be adjusted by adjusting the pressure change in the flash evaporator 4.
According to the fruit juice sterilization method provided by the embodiment, in the second step, steam generated by the steam generator 2 is directly contacted with a product for heat exchange, and in combination with the fourth step, the steam ejector pump 5 is used for carrying out flash evaporation cold treatment on the product, so that the product reaches sterilization temperature in a short time and is cooled in a short time, and the color and flavor of the product can be ensured to the greatest extent; after the product is sterilized in the heat-preserving tank 3, the product is subjected to flash evaporation cooling by adopting the steam ejector pump 5 in the fourth step, so that the sterilized product is prevented from contacting the outside, and the product is prevented from being polluted; in addition, in the first step, the steam generator 2 is adopted to generate steam to directly contact with the product for heat exchange, so that a large pressure difference caused by a traditional dividing wall type heating mode is avoided, the pressure bearing capacity required by equipment is reduced, and the production cost is reduced.
The above disclosure is only one preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the invention, which is defined by the claims and their equivalents.
Claims (4)
1. A fruit juice sterilization method, characterized by comprising the steps of:
the method comprises the following steps: preheating the fruit juice;
step two: mixing the preheated fruit juice obtained in the first step with hot steam to enable the fruit juice to reach the sterilization temperature quickly;
step three: performing heat preservation and sterilization treatment on the fruit juice obtained in the second step;
step four: and D, carrying out flash evaporation cooling treatment on the fruit juice obtained in the third step.
2. The method for sterilizing fruit juice according to claim 1, wherein the heating time in the second step is 2 s.
3. The method for sterilizing fruit juice according to claim 1, wherein the temperature-keeping time in the third step is 1-8 minutes.
4. The method for sterilizing fruit juice according to claim 1, wherein in the fourth step, the fruit juice obtained in the third step is subjected to flash evaporation cooling treatment by using a steam vacuum ejector pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605880.3A CN110583954A (en) | 2018-06-13 | 2018-06-13 | Method for sterilizing fruit juice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605880.3A CN110583954A (en) | 2018-06-13 | 2018-06-13 | Method for sterilizing fruit juice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110583954A true CN110583954A (en) | 2019-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810605880.3A Pending CN110583954A (en) | 2018-06-13 | 2018-06-13 | Method for sterilizing fruit juice |
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| Country | Link |
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| CN (1) | CN110583954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117158523A (en) * | 2023-10-20 | 2023-12-05 | 江苏楷益智能科技有限公司 | Steam mixed flow sterilization system and control method thereof |
-
2018
- 2018-06-13 CN CN201810605880.3A patent/CN110583954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117158523A (en) * | 2023-10-20 | 2023-12-05 | 江苏楷益智能科技有限公司 | Steam mixed flow sterilization system and control method thereof |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191220 |