Low-sodium selenium-enriched malt soda water and preparation process thereof

Abstract

The invention provides low-sodium selenium-enriched malt soda water and a preparation process thereof. The low-sodium selenium-enriched malt soda water is prepared from the following raw materials in parts by weight: 1.3 to 1.8 parts of selenium-enriched malt flour, 0.2 to 0.3 part of sodium bicarbonate, 0.2 to 0.3 part of citric acid, 0.2 to 0.3 part of potassium sorbate and 997.3 to 998.1 parts of water. The soda water which is extremely low in sodium content and rich in natural organic selenium is successfully developed through an accurate raw material ratio and a unique preparation process, and the sodium content of the soda water is strictly controlled at a low level of 50-90mg / L and is far lower than that of a conventional soda water product; specific requirements of patients suffering from hypertension and cardiovascular diseases and consumers paying attention to healthy diets on low sodium intake are effectively met, meanwhile, the content of selenium derived from selenium-enriched malt in the product is stabilized to be 100-160 micrograms per liter, and a convenient and reliable daily selenium supplement way is provided for the consumers.

Description

Technical Field

[0001] This invention relates to the field of soda water preparation technology, and more particularly to low-sodium selenium-enriched malt soda water and its preparation process. Background Technology

[0002] Low-sodium selenium-enriched malt soda is a beverage product that combines the concept of healthy drinking water with functional ingredients. As consumers become increasingly aware of healthy eating, the market demand for beverages with specific nutritional functions is growing. These products not only need to meet the basic need to quench thirst, but also need to provide additional health value, such as supplementing the body with essential trace elements.

[0003] In existing functional soda water products, it is difficult to achieve a balance between sodium content and functional ingredients. In order to maintain the unique taste and stability of soda water while ensuring sufficient carbonation, a certain amount of sodium salt is often added during the production process. This directly leads to a high sodium content in the final product, which contradicts the current market demand for low-sodium healthy drinks. On the other hand, simply reducing the amount of sodium salt added will affect the taste quality and shelf-life stability of the product. This technical contradiction has not yet been effectively resolved.

[0004] Therefore, in response to the problems mentioned above, this invention proposes a low-sodium selenium-enriched malt soda and its preparation process. Summary of the Invention

[0005] To overcome the difficulty in balancing sodium content and product quality, this invention proposes a low-sodium, selenium-enriched malt soda and its preparation process. While ensuring good taste and stability, it effectively reduces sodium content and enriches selenium, meeting the dual needs of modern consumers for healthy beverages.

[0006] The technical solution of the present invention is: low-sodium selenium-enriched malt soda water, which is composed of the following raw materials in parts by weight: 1.3-1.8 parts of selenium-enriched malt powder, 0.2-0.3 parts of sodium bicarbonate, 0.2-0.3 parts of citric acid, 0.2-0.3 parts of potassium sorbate, and 997.3-998.1 parts of water.

[0007] As a preferred embodiment, the raw materials are composed of the following parts by weight: 1.6 parts selenium-enriched malt powder, 0.27 parts sodium bicarbonate, 0.26 parts citric acid, 0.26 parts potassium sorbate, and 997.61 parts water.

[0008] Selenium-enriched malt powder provides abundant natural organic selenium, with its selenium content controlled between 800-1200 μg / kg. This effectively supplements the trace element selenium needed by the human body. At the same time, its particle size is controlled between 80-100 mesh, and its moisture content does not exceed 8%. This facilitates rapid dissolution in hot water and the formation of a clear extract after filtration, ensuring that the product has a pure taste and stable nutrition.

[0009] Sodium bicarbonate, as the main source of soda gas, has a purity of no less than 99.5% and is used in amounts controlled at 0.2-0.3 parts. While providing a suitable carbonation taste, it significantly reduces the total sodium content, keeping the sodium content of the final product at a low level of 60-80 mg / L, thus meeting consumers' demand for low-sodium healthy beverages.

[0010] The citric acid used is anhydrous citric acid with a purity of ≥99.5%. It reacts with sodium bicarbonate to produce carbon dioxide, giving the product a refreshing sour taste and a bubbly feel. At the same time, it adjusts the pH value of the system, enhancing the product's stability and flavor profile.

[0011] Potassium sorbate, as a highly effective preservative with a purity of no less than 98%, can effectively inhibit the growth of microorganisms in beverages, extend the shelf life of products, and ensure the safety of products during storage and distribution.

[0012] Water is used as both a solvent and a carrier. Pure water with a conductivity of no more than 10 μS / cm and a total bacterial count of ≤10 CFU / mL is selected to ensure the overall purity of the product and prevent foreign impurities from interfering with the product's flavor and stability. This is the basis for the uniform dispersion and dissolution of all components.

[0013] As a preferred method, the preparation process of low-sodium selenium-enriched malt soda water includes the following steps:

[0014] S1. Add selenium-enriched malt powder to hot water at 90℃ and stir at a constant speed of 100-200 rpm until completely dissolved. Then keep the solution at 90℃ for 20 minutes. After that, pass the solution through a microporous filter with an accuracy of 0.45μm for primary filtration, and then use diatomaceous earth for fine filtration to obtain a clear selenium-enriched malt extract.

[0015] S2, dissolve sodium bicarbonate thoroughly in room temperature water at 20-25℃ to obtain sodium bicarbonate solution, and at the same time place citric acid and potassium sorbate together in warm water at 40±5℃ and stir until completely dissolved to obtain acid preservative mixture.

[0016] S3, put the selenium-enriched malt extract, sodium bicarbonate solution and acid preservative mixture obtained in the above steps into a mixing tank together with water, turn on the stirring device to mix all components until a completely homogeneous mixture without layering or suspended matter is obtained.

[0017] S4, the mixed liquid is sterilized in the UHT sterilization system and kept at 138°C for 45 seconds to completely kill microorganisms and spores in the liquid;

[0018] S5 involves hot-filling the UHT-sterilized liquid into the packaging container at a temperature of 90°C, followed by coding, and then tunnel pasteurization at 85°C for 15 minutes.

[0019] S6. After being pasteurized in the tunnel, the product is cooled to below 30°C. Then, an automatic labeling device is used to affix labels to the containers. Finally, the finished product is automatically packed and stacked to complete the entire preparation process.

[0020] Preferably, the tunnel pasteurization process is a terminal sterilization treatment of the complete packaged product after filling and capping. By passing the coded bottled product through the conveyor belt of the tunnel pasteurizer at a constant speed, the product is sprayed or soaked in hot water at 85°C for 15 minutes in the sterilizer, which can effectively kill any microorganisms that may remain on the packaging surface and inside the bottle, ensuring the microbial safety of the product during storage and circulation and extending its shelf life.

[0021] Preferably, the mixing tank in step S3 is made of stainless steel, the stirring speed is 50-100 rpm, and the mixing time is 15-20 minutes to ensure that all components are fully and evenly mixed, avoiding the formation of stratification or suspended matter. At the same time, the stainless steel material meets food hygiene requirements and prevents metal contamination.

[0022] Preferably, the diatomaceous earth filtration step uses a diatomaceous earth filter and food-grade powdered diatomaceous earth as a filter aid. Fine filtration is performed under a feed pressure of 0.2-0.35 MPa to remove tiny particles and insoluble impurities from the selenium-enriched malt extract, thereby improving the clarity of the product and preventing subsequent precipitation or turbidity.

[0023] Preferably, the labeling in step S6 uses self-adhesive labels, the label material is BOPP film, and the printing ink is environmentally friendly water-based ink.

[0024] Preferably, the hot filling step involves filling the mixture into heat-resistant plastic or glass bottles that have undergone high-pressure superheated steam sterilization in an aseptic environment using a fully automatic aseptic filling machine after the mixture has been sterilized by UHT and cooled to 90°C. Immediately after filling, the bottles are sealed with sterilized aluminum alloy easy-open caps or plastic screw caps.

[0025] The beneficial effects of this invention are:

[0026] 1. This invention, through precise raw material ratios and a unique preparation process, has successfully developed a soda water with extremely low sodium content and rich in natural organic selenium. Its sodium content is strictly controlled at an extremely low level of 50-90 mg / L, far lower than that of conventional soda water products, effectively meeting the specific needs of patients with hypertension and cardiovascular diseases, as well as consumers who pay attention to healthy eating for low sodium intake. At the same time, the selenium content derived from selenium-enriched malt in the product is stable at 100-160 μg / L, providing consumers with a convenient and reliable way to supplement selenium daily.

[0027] 2. The present invention first removes insoluble impurities and large molecular particles from the raw material by filtering the selenium-enriched malt extract through 0.45μm micropore filtration and diatomaceous earth filtration, thereby avoiding precipitation or turbidity during subsequent storage.

[0028] 3. This invention employs a dual sterilization system combining UHT sterilization and tunnel pasteurization. UHT treatment can efficiently kill all microorganisms and spores in the liquid, while subsequent 90°C hot filling combined with tunnel pasteurization of the packaging container ensures a sterile environment for the packaging, thereby improving the shelf life. Attached Figure Description

[0029] Figure 1 The diagram shown illustrates the preparation process of this invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] The present invention provides an embodiment of a low-sodium selenium-enriched malt soda, which is composed of the following raw materials in parts by weight: 1.3-1.8 parts selenium-enriched malt powder, 0.2-0.3 parts sodium bicarbonate, 0.2-0.3 parts citric acid, 0.2-0.3 parts potassium sorbate, and 997.3-998.1 parts water.

[0032] Furthermore, selenium-enriched malt powder is produced by germinating grains such as wheat under selenium-rich conditions, allowing selenium to accumulate in the malt in organic forms such as selenoamino acids. Its selenium content is strictly controlled at 800-1200 μg / kg, ensuring that the final product provides a safe and highly bioavailable natural organic selenium source. At the same time, the raw material is processed to a particle size of 80-100 mesh to facilitate rapid dissolution in hot water, and the moisture content is ≤8% to ensure the storage stability of the raw material. In addition, selenium-enriched malt powder also gives the product a unique mild malt aroma and a light natural sweetness, forming the basis of the product's unique flavor.

[0033] Sodium bicarbonate is the core ingredient in "soda water," with a purity of ≥99.5%. It undergoes an acid-base neutralization reaction with citric acid to produce carbon dioxide gas, giving the product a unique pungent taste and refreshing effervescence. At the same time, as a pH adjuster, it is weakly alkaline after dissolving, which helps neutralize stomach acid and continues the traditional health benefits of soda water. Furthermore, it is the only source of sodium in the product, and its addition is precisely controlled within an extremely low range of 0.2-0.3 parts, which allows the sodium content of the final product to be strictly limited to a low level of 60-80 mg / L.

[0034] Citric acid is anhydrous citric acid with a purity of ≥99.5%. It produces carbon dioxide through a precise acid-base neutralization reaction with sodium bicarbonate, giving soda water its unique refreshing effervescence and bubbly taste. At the same time, its bright and pleasant sour taste is well balanced with the natural sweetness of selenium-enriched malt, thus optimizing the overall flavor of the product.

[0035] Potassium sorbate is used as a preservative in this product, with a purity of ≥98%. Its main function is to effectively inhibit the activity of molds, yeasts and aerobic bacteria. Although this invention has undergone dual sterilization treatment by UHT ultra-high temperature instantaneous sterilization and tunnel pasteurization, the addition of potassium sorbate can assist in the preservation needs, thereby extending the product's shelf life.

[0036] Water, as the basic solvent and main component of this product, accounts for more than 99.8%. Its quality plays a decisive role in the safety, stability and flavor purity of the product. The use of purified water with a conductivity of ≤10μS / cm and a total colony count of ≤10CFU / mL indicates that its ion content and microorganisms have been reduced to a very low level. This high purity characteristic can prevent impurity ions in the water from reacting with components such as sodium bicarbonate and citric acid in the formula, thereby ensuring the stability of the acid-base neutralization and gas production process, and completely eliminating precipitation or turbidity caused by high water hardness.

[0037] Please see Figure 1 Example 1:

[0038] Formula: 1.6 kg selenium-enriched malt powder, 0.27 kg sodium bicarbonate, 0.26 kg citric acid, 0.26 kg potassium sorbate, and 987.61 kg water.

[0039] Preparation process:

[0040] S1. Heat a portion of the formulated amount of purified water to 90℃. Under constant temperature stirring, add 1.6kg of selenium-enriched malt powder to the hot water at a speed of 150rpm until completely dissolved. Then, keep the solution at 90℃ for 20 minutes. After that, pass the solution through a microporous filter with an accuracy of 0.45μm for primary filtration. Then, use a diatomaceous earth filter with food-grade powdered diatomaceous earth as a filter aid and maintain a feed pressure of 0.28MPa for fine filtration. Finally, obtain a clear and transparent selenium-enriched malt extract for later use.

[0041] S2, dissolve 0.27 kg of sodium bicarbonate in room temperature water at 20-25℃ under stirring to prepare a sodium bicarbonate solution. At the same time, place 0.26 kg of citric acid and 0.26 kg of potassium sorbate in warm water at 40℃ and stir until completely dissolved to obtain an acid preservative mixture for later use.

[0042] S3. Place the selenium-enriched malt extract, sodium bicarbonate solution, and acid preservative mixture obtained in the above steps, along with the remaining purified water, into a stainless steel mixing tank. Turn on the stirring device and stir at 75 rpm for 18 minutes to ensure that all components are fully mixed until a completely homogeneous mixture without stratification or suspended matter is obtained.

[0043] S4 delivers the mixture to the UHT sterilization system, where it is kept at 138°C for 45 seconds for ultra-high temperature instantaneous sterilization, thereby completely killing microorganisms and heat-resistant spores in the liquid.

[0044] S5 cools the UHT-sterilized liquid to 90°C, and then uses a fully automatic aseptic filling machine to quantitatively fill the liquid into heat-resistant plastic or glass bottles that have been sterilized by high-pressure superheated steam in an aseptic filling environment. Immediately after filling, the bottles are sealed with sterilized aluminum alloy easy-open caps or plastic screw caps. The bottles are then coded, and the fully packaged products are passed through the conveyor belt of a tunnel pasteurizer at a constant speed. Inside the pasteurizer, the products are sprayed with 85°C hot water for 15 minutes for sterilization.

[0045] S6. After being pasteurized in the tunnel, the product is cooled to below 30°C in a cooling water tank. Then, an automatic labeling device is used to affix self-adhesive labels made of BOPP film and printed with environmentally friendly water-based ink to the containers. Finally, the finished products are automatically packed and stacked to complete the entire preparation process.

[0046] In this embodiment, the sodium content is controlled at approximately 71.49 mg / L, which is far lower than that of similar soda waters on the market. This greatly reduces the sodium intake burden on consumers, especially those with hypertension. At the same time, through the precise addition of selenium-enriched malt powder, the natural organic selenium content in the product is kept stable at around 120 μg / L.

[0047] Example 2:

[0048] Formula: 1.3kg selenium-enriched malt powder, 0.2kg sodium bicarbonate, 0.2kg citric acid, 0.2kg potassium sorbate, and 998.1kg water.

[0049] Preparation process:

[0050] S1. Heat a portion of the formulated amount of purified water to 90℃. Under constant temperature stirring, add 1.3kg of selenium-enriched malt powder to the hot water at a speed of 100rpm until completely dissolved. Then, keep the solution at 90℃ for 20 minutes. After that, pass the solution through a microporous filter with a precision of 0.45μm for primary filtration. Then, use a diatomaceous earth filter with food-grade powdered diatomaceous earth as a filter aid and maintain a feed pressure of 0.2MPa for fine filtration. Finally, obtain a clear and transparent selenium-enriched malt extract for later use.

[0051] S2, dissolve 0.2 kg of sodium bicarbonate in room temperature water at 20-25℃ under stirring to prepare a sodium bicarbonate solution. At the same time, place 0.2 kg of citric acid and 0.2 kg of potassium sorbate in warm water at 45℃ and stir until completely dissolved to obtain an acid preservative mixture for later use.

[0052] S3. Place the selenium-enriched malt extract, sodium bicarbonate solution, and acid preservative mixture obtained in the above steps, along with the remaining purified water, into a stainless steel mixing tank. Turn on the stirring device and stir at 50 rpm for 15 minutes to ensure that all components are fully mixed until a completely homogeneous mixture without stratification or suspended matter is obtained.

[0053] S4 delivers the mixture to the UHT sterilization system, where it is kept at 138°C for 45 seconds for ultra-high temperature instantaneous sterilization, thereby completely killing microorganisms and heat-resistant spores in the liquid.

[0054] S5 cools the UHT-sterilized liquid to 90°C, and then uses a fully automatic aseptic filling machine to quantitatively fill the liquid into heat-resistant plastic or glass bottles that have been sterilized by high-pressure superheated steam in an aseptic filling environment. Immediately after filling, the bottles are sealed with sterilized aluminum alloy easy-open caps or plastic screw caps. The bottles are then coded, and the fully packaged products are passed through the conveyor belt of a tunnel pasteurizer at a constant speed. Inside the pasteurizer, the products are sprayed with 85°C hot water for 15 minutes for sterilization.

[0055] S6. After being pasteurized in the tunnel, the product is cooled to below 30°C in a cooling water tank. Then, an automatic labeling device is used to affix self-adhesive labels made of BOPP film and printed with environmentally friendly water-based ink to the containers. Finally, the finished products are automatically packed and stacked to complete the entire preparation process.

[0056] This embodiment controls the sodium content at approximately 53.2 mg / L, making it an extremely pure low-sodium product, especially suitable for consumers with extreme requirements for sodium intake, such as patients with severe hypertension or kidney disease. At the same time, its selenium content is stable at around 100 μg / L, providing basic selenium nutrient supplementation.

[0057] Example 3:

[0058] Formula: 1.8 kg selenium-enriched malt powder, 0.3 kg sodium bicarbonate, 0.3 kg citric acid, 0.3 kg potassium sorbate, and 997.3 kg water.

[0059] Preparation process:

[0060] S1. Heat a portion of the formulated amount of purified water to 90℃. Under constant temperature stirring, add 1.8kg of selenium-enriched malt powder to the hot water at a speed of 200rpm until completely dissolved. Then, keep the solution at 90℃ for 20 minutes. After that, pass the solution through a microporous filter with a precision of 0.45μm for primary filtration. Then, use a diatomaceous earth filter with food-grade powdered diatomaceous earth as a filter aid and maintain a feed pressure of 0.28MPa for fine filtration. Finally, obtain a clear and transparent selenium-enriched malt extract for later use.

[0061] S2, dissolve 0.3 kg of sodium bicarbonate in room temperature water at 20-25℃ under stirring to prepare a sodium bicarbonate solution. At the same time, place 0.3 kg of citric acid and 0.3 kg of potassium sorbate together in warm water at 40℃ and stir until completely dissolved to obtain an acid preservative mixture for later use.

[0062] S3. Place the selenium-enriched malt extract, sodium bicarbonate solution, and acid preservative mixture obtained in the above steps, along with the remaining purified water, into a stainless steel mixing tank. Turn on the stirring device and stir at 100 rpm for 20 minutes to ensure that all components are fully mixed until a completely homogeneous mixture without stratification or suspended matter is obtained.

[0063] S4 delivers the mixture to the UHT sterilization system, where it is kept at 138°C for 45 seconds for ultra-high temperature instantaneous sterilization, thereby completely killing microorganisms and heat-resistant spores in the liquid.

[0064] S5 cools the UHT-sterilized liquid to 90°C, and then uses a fully automatic aseptic filling machine to quantitatively fill the liquid into heat-resistant plastic or glass bottles that have been sterilized by high-pressure superheated steam in an aseptic filling environment. Immediately after filling, the bottles are sealed with sterilized aluminum alloy easy-open caps or plastic screw caps. The bottles are then coded, and the fully packaged products are passed through the conveyor belt of a tunnel pasteurizer at a constant speed. Inside the pasteurizer, the products are sprayed with 85°C hot water for 15 minutes for sterilization.

[0065] S6. After being pasteurized in the tunnel, the product is cooled to below 30°C in a cooling water tank. Then, an automatic labeling device is used to affix self-adhesive labels made of BOPP film and printed with environmentally friendly water-based ink to the containers. Finally, the finished products are automatically packed and stacked to complete the entire preparation process.

[0066] In this embodiment, the sodium content is controlled at approximately 89.4 mg / L, which is still within the low sodium range. At the same time, its selenium content is stable at around 160 μg / L, which can more efficiently meet consumers' daily selenium supplementation needs and enhance its functionality.

[0067] In the above embodiments, the insoluble impurities and large molecular particles in the malt extract were removed by the preparation process of the present invention, ensuring that the finished product has a clear and bright color, a pure taste, and no precipitation or turbidity throughout the entire shelf life.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. Low-sodium, selenium-enriched malt soda water, characterized in that, It is composed of the following raw materials in parts by weight: 1.3-1.8 parts selenium-enriched malt powder, 0.2-0.3 parts sodium bicarbonate, 0.2-0.3 parts citric acid, 0.2-0.3 parts potassium sorbate, and 997.3-998.1 parts water.

2. The low-sodium, selenium-enriched malt soda water according to claim 1, characterized in that, It is composed of the following raw materials in parts by weight: 1.6 parts selenium-enriched malt powder, 0.27 parts sodium bicarbonate, 0.26 parts citric acid, 0.26 parts potassium sorbate, and 997.61 parts water.

3. The low-sodium, selenium-enriched malt soda water according to claim 1, characterized in that: The selenium-enriched malt powder has a selenium content of 800-1200 μg / kg, a particle size of 80-100 mesh, and a moisture content of ≤8%. The sodium bicarbonate has a purity of ≥99.5%, the citric acid is anhydrous citric acid with a purity of ≥99.5%, and the potassium sorbate has a purity of ≥98%.

4. The low-sodium, selenium-enriched malt soda water according to claim 1, characterized in that: The water is purified water with a conductivity ≤10μS / cm and a total bacterial count ≤10CFU / mL.

5. A preparation process for low-sodium selenium-enriched malt soda water, as described in any one of claims 1-4, characterized in that, It includes the following steps: S1. Add selenium-enriched malt powder to hot water at 90℃ and stir at a constant speed of 100-200 rpm until completely dissolved. Then keep the solution at 90℃ for 20 minutes. After that, pass the solution through a microporous filter with an accuracy of 0.45μm for primary filtration, and then use diatomaceous earth for fine filtration to obtain a clear selenium-enriched malt extract. S2, dissolve sodium bicarbonate thoroughly in room temperature water at 20-25℃ to obtain sodium bicarbonate solution, and at the same time place citric acid and potassium sorbate together in warm water at 40±5℃ and stir until completely dissolved to obtain acid preservative mixture. S3, put the selenium-enriched malt extract, sodium bicarbonate solution and acid preservative mixture obtained in the above steps into a mixing tank together with water, turn on the stirring device to mix all components until a completely homogeneous mixture without layering or suspended matter is obtained. S4, the mixed liquid is sterilized in the UHT sterilization system and kept at 138°C for 45 seconds to completely kill microorganisms and spores in the liquid; S5 involves hot-filling the UHT-sterilized liquid into the packaging container at a temperature of 90°C, followed by coding, and then tunnel pasteurization at 85°C for 15 minutes. S6. After being pasteurized in the tunnel, the product is cooled to below 30°C. Then, an automatic labeling device is used to affix labels to the containers. Finally, the finished product is automatically packed and stacked to complete the entire preparation process.

6. The preparation process of low-sodium selenium-enriched malt soda water according to claim 5, characterized in that: The tunnel pasteurization process is a terminal sterilization treatment of the complete packaged products after filling and capping. The bottled products after coding are passed through the conveyor belt of the tunnel pasteurizer at a constant speed, and the products are sprayed or soaked in hot water at 85°C for 15 minutes inside the pasteurizer.

7. The preparation process of low-sodium selenium-enriched malt soda water according to claim 5, characterized in that: In step S3, the mixing tank is made of stainless steel, the stirring speed is 50-100 rpm, and the mixing time is 15-20 minutes.

8. The preparation process of low-sodium selenium-enriched malt soda water according to claim 5, characterized in that: The diatomaceous earth filtration step uses a diatomaceous earth filter and food-grade powdered diatomaceous earth as a filter aid. The feed pressure is maintained at 0.2-0.35 MPa during the filtration process.

9. The preparation process of low-sodium selenium-enriched malt soda water according to claim 5, characterized in that: The labeling in step S6 uses self-adhesive labels, the label material is BOPP film, and the printing ink is environmentally friendly water-based ink.

10. The preparation process of low-sodium selenium-enriched malt soda water according to claim 5, characterized in that: The hot filling step involves filling the mixture into heat-resistant plastic or glass bottles that have undergone high-pressure superheated steam sterilization in an aseptic environment using a fully automatic aseptic filling machine after the mixture has been sterilized by UHT and cooled to 90°C. Immediately after filling, the bottles are sealed with sterilized aluminum alloy easy-open caps or plastic screw caps.

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