Selenium-rich beverage and preparation method thereof

Abstract

The invention discloses a selenium-rich beverage and a preparation method thereof. The preparation method comprises the following steps: step 1, preparing a selenium-rich substance: selecting selenium-rich yeast, selenium-rich spirulina or a selenium-rich plant extract as a selenium source; according to the selenium-enriched beverage and the preparation method thereof, the selenium-enriched yeast, the selenium-enriched spirulina and the selenium-enriched plant extract are used as selenium sources, so that the rich content of selenium in the beverage is ensured, various vitamins, mineral substances and bioactive components in the natural raw materials are also reserved, comprehensive and balanced nutrition support is provided for consumers, and the beverage is suitable for the consumers. The immunity enhancement and the anti-oxidation effect are facilitated; different basic milk sources such as milk, tea leaves or natural water sources are selected, and personalized flavoring agents are added, so that the taste preferences and health requirements of different consumers are met; in addition, extraction technologies such as water extraction, alcohol extraction and supercritical CO2 extraction are adopted, so that the extraction efficiency and stability of active components in the selenium source are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of selenium-rich beverages, in particular to a selenium-rich beverage and a preparation method thereof. Background Art

[0002] With the accelerating pace of modern life and rising health awareness, consumers are increasingly concerned about the quality and health benefits of beverages. Beverages are not only a tool to quench thirst and replenish energy, but have also become an important part of people's pursuit of a healthy lifestyle. Against this backdrop, functional beverages rich in trace elements and bioactive ingredients are gradually gaining popularity in the market.

[0003] Selenium, a trace element crucial to human health, possesses multiple physiological functions, including antioxidant and immune-enhancing properties. However, due to the uneven distribution of selenium in the natural environment and differences in dietary habits, some people suffer from insufficient selenium intake. Therefore, developing functional beverages rich in selenium has become an important way to meet consumers' health needs.

[0004] Although some selenium-rich beverages are currently available on the market, there are still many shortcomings in the preparation process, raw material selection, flavor blending and nutrient retention. For example, some products have unstable selenium content, a single taste, and serious nutrient loss, which limits their promotion and application in the market. Therefore, we proposed a selenium-rich beverage and its preparation method to meet the needs of different consumers. Summary of the Invention

[0005] In view of the problems existing in the prior art, the present invention discloses a method for preparing a selenium-rich beverage, which adopts a technical solution comprising the following steps: Step 1: Preparation of selenium-rich substances: selenium-rich yeast, selenium-rich spirulina or selenium-rich plant extracts are selected as selenium sources; wherein the selenium-rich yeast and selenium-rich spirulina are obtained by fermentation culture, and the fermentation conditions are: temperature 28-32°C, pH 5.5-7.0, ventilation volume 1.0-1.5 vvm, and culture time 72-84 hours; the selenium-rich plant extracts are obtained from selenium-rich plants by water extraction, alcohol extraction or supercritical CO2 extraction, and the extraction conditions include temperature 50-70°C, a solvent-to-water ratio of 1:10 to 1:15, and an extraction time of 2-3 hours; the by-products or semi-finished products produced include fermentation broth, extract, and selenium-rich yeast powder, selenium-rich spirulina powder and / or selenium-rich plant extract powder after centrifugation, filtration and drying; Step 2: Preparation of selenium-rich beverage: Select basic milk source, tea or water source as the beverage base and mix it with the selenium-rich extract prepared in step 1.

[0006] Furthermore, the preparation steps of the milk drink include: heating the basic milk source to 65-70°C, adding a stabilizer in an amount of 0.2-0.4%, adding an emulsifier in an amount of 0.1-0.15%, stirring evenly, adding the selenium-rich yeast powder or selenium-rich plant extract powder prepared in step one, adjusting the selenium content to 100-150 micrograms per liter of beverage, continuing to stir until completely dissolved, homogenizing at a pressure of 20 MPa, sterilizing at a temperature of 121°C for 20-25 seconds, and finally filling and sealing.

[0007] Furthermore, the basic milk source is milk, and its fat content is 3.2-3.8%.

[0008] Furthermore, the basic milk source is soy milk or almond milk, and the plant protein content thereof is ≥2.5%.

[0009] Furthermore, the preparation steps of the tea beverage include: pre-treating selenium-rich tea leaves or one or more of green tea, black tea and oolong tea, extracting effective ingredients by water extraction, with a water to tea ratio of 20:1 to 25:1, a temperature of 90-95°C, and an extraction time of 15-25 minutes, filtering to obtain tea extract, mixing the tea extract with the selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, adjusting the selenium content to 80-120 micrograms per liter of beverage, adding flavorings as needed, sterilizing, and filling and sealing.

[0010] Furthermore, the tea extract is further concentrated to evaporate water to 30-40% of the original volume, so as to increase the content of effective ingredients of tea polyphenols and amino acids.

[0011] Furthermore, the preparation steps of the drink include: selecting selenium-rich mineral water or natural water source with a selenium content ≥ 20 μg / L; if the selenium content is insufficient, adding the selenium-rich yeast powder, selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and replenishing the selenium content to 50-80 micrograms per liter of beverage; adding flavorings as needed, mixing evenly, sterilizing, and filling and sealing.

[0012] Furthermore, the natural water source undergoes multi-stage filtration treatments including sand filtration, carbon filtration, ultrafiltration and reverse osmosis to ensure water quality safety.

[0013] Furthermore, the sterilization treatment adopts high temperature short time sterilization (HTST) technology with a temperature of 135-145°C and a time of 2-5 seconds, or adopts ultra-high temperature instantaneous sterilization (UHT) technology with a temperature of 130-150°C and a time of 1-3 seconds to ensure minimal loss of nutrients and flavor substances in the beverage during the sterilization process.

[0014] Furthermore, vitamin E is added to the selenium-rich beverage, and the ratio of vitamin E to the selenium content in the selenium-rich beverage is between 1:10 and 1:50, so as to enhance the antioxidant effect and improve the taste of the product.

[0015] Beneficial effects of the present invention: The present invention utilizes selenium-rich yeast, selenium-rich spirulina and selenium-rich plant extracts as selenium sources, which not only ensures the rich content of selenium in the beverage, but also retains the multiple vitamins, minerals and bioactive ingredients in these natural raw materials, providing consumers with comprehensive and balanced nutritional support, which helps to enhance immunity and antioxidant effects; by selecting different basic milk sources such as milk, tea or natural water sources, and combining personalized flavorings to meet the taste preferences and health needs of different consumers; in addition, extraction technologies such as water extraction, alcohol extraction and supercritical CO2 extraction are adopted to effectively improve the extraction efficiency and stability of active ingredients in the selenium source, ensuring the high content and bioavailability of effective ingredients in the beverage; through multi-stage filtration treatment and strict high-temperature short-time or ultra-high-temperature instantaneous sterilization technology, impurities and microorganisms in the water source and raw materials are effectively removed, ensuring the hygiene and safety of the beverage, while retaining the nutritional components and flavor substances of the beverage to the maximum extent. DETAILED DESCRIPTION

[0016] Example 1

[0017] The present invention discloses a method for preparing a selenium-rich beverage, and the technical solution adopted is as follows: Step 1: Preparation of selenium-rich substances: selenium-rich yeast, selenium-rich spirulina or selenium-rich plant extracts are selected as selenium sources; wherein the selenium-rich yeast and selenium-rich spirulina are obtained by fermentation culture, and the fermentation conditions are: temperature 28°C, pH value 5.5, ventilation volume 1.0 vvm, and culture time 72 hours; the selenium-rich plant extracts are obtained from selenium-rich plants by water extraction, alcohol extraction or supercritical CO2 extraction method, and the extraction conditions include temperature 50°C, solvent to water ratio of 1:10, and extraction time 2 hours; the by-products or semi-finished products produced include fermentation broth, extract, and selenium-rich yeast powder, selenium-rich spirulina powder and / or selenium-rich plant extract powder after centrifugation, filtration and drying; Step 2: Preparation of selenium-rich beverage: Select a basic milk source as the basis of the beverage and modulate it with the selenium-rich extract prepared in step 1, wherein the basic milk source is milk with a fat content of 3.2%, or the basic milk source is soy milk or almond milk with a plant protein content of ≥2.5%; the preparation steps of the milk drink include: heating the basic milk source to 65°C, adding a stabilizer in an amount of 0.2%, adding an emulsifier in an amount of 0.1%, stirring evenly, adding the selenium-rich yeast powder or selenium-rich plant extract powder prepared in step 1, adjusting the selenium content to 100 micrograms per liter of beverage, continuing to stir until completely dissolved, performing homogenization treatment at a pressure of 20 MPa, sterilizing at a temperature of 121°C for 20 seconds, and finally filling and sealing; The sterilization treatment adopts high temperature short time sterilization (HTST) technology with a temperature of 135°C and a time of 2 seconds, or adopts ultra-high temperature instantaneous sterilization (UHT) technology with a temperature of 130°C and a time of 1 second, to ensure minimal loss of nutrients and flavor substances in the beverage during the sterilization process. Vitamin E is added to the selenium-rich beverage, and the ratio of vitamin E to selenium content in the selenium-rich beverage is 1:10, to enhance the antioxidant effect and improve the taste of the product.

[0018] Example 2

[0019] The present invention discloses a method for preparing a selenium-rich beverage, and the technical solution adopted is as follows: Step 1: Preparation of selenium-rich substances: selenium-rich yeast, selenium-rich spirulina or selenium-rich plant extracts are selected as selenium sources; wherein the selenium-rich yeast and selenium-rich spirulina are obtained by fermentation culture, and the fermentation conditions are: temperature 30°C, pH 6.5, ventilation volume 1.3vvm, and culture time 78 hours; the selenium-rich plant extracts are obtained from selenium-rich plants by water extraction, alcohol extraction or supercritical CO2 extraction, and the extraction conditions include temperature 60°C, a solvent-to-water ratio of 1:13, and an extraction time of 2.5 hours; the by-products or semi-finished products produced include fermentation broth, extract, and selenium-rich yeast powder, selenium-rich spirulina powder and / or selenium-rich plant extract powder after centrifugation, filtration and drying; Step 2: Preparation of selenium-rich beverage: Select a basic milk source as the basis of the beverage and modulate it with the selenium-rich extract prepared in step 1, wherein the basic milk source is milk with a fat content of 3.5%, or the basic milk source is soy milk or almond milk with a plant protein content of ≥2.5%; the preparation steps of the milk drink include: heating the basic milk source to 68°C, adding a stabilizer in an amount of 0.3%, adding an emulsifier in an amount of 0.13%, stirring evenly, adding the selenium-rich yeast powder or selenium-rich plant extract powder prepared in step 1, adjusting the selenium content to 125 micrograms per liter of beverage, continuing to stir until completely dissolved, performing homogenization treatment at a pressure of 20 MPa, sterilizing at a temperature of 121°C for 23 seconds, and finally filling and sealing; The sterilization treatment adopts high temperature short time sterilization (HTST) technology with a temperature of 140°C and a time of 3.5 seconds, or adopts ultra-high temperature instantaneous sterilization (UHT) technology with a temperature of 140°C and a time of 2 seconds to ensure minimal loss of nutrients and flavor substances in the beverage during the sterilization process. Vitamin E is added to the selenium-rich beverage, and the ratio of vitamin E to selenium content in the selenium-rich beverage is 1:25 to enhance the antioxidant effect and improve the taste of the product.

[0020] Example 3

[0021] The present invention discloses a method for preparing a selenium-rich beverage, and the technical solution adopted is as follows: Step 1: Preparation of selenium-rich substances: selenium-rich yeast, selenium-rich spirulina or selenium-rich plant extracts are selected as selenium sources; wherein the selenium-rich yeast and selenium-rich spirulina are obtained by fermentation culture, and the fermentation conditions are: temperature 32°C, pH 7.0, ventilation volume 1.5vvm, and culture time 84 hours; the selenium-rich plant extracts are obtained from selenium-rich plants by water extraction, alcohol extraction or supercritical CO2 extraction, and the extraction conditions include temperature 70°C, a solvent-to-water ratio of 1:15, and an extraction time of 3 hours; the by-products or semi-finished products produced include fermentation broth, extract, and selenium-rich yeast powder, selenium-rich spirulina powder and / or selenium-rich plant extract powder after centrifugation, filtration and drying; Step 2: Preparation of selenium-rich beverage: Select a basic milk source as the basis of the beverage and modulate it with the selenium-rich extract prepared in step 1, wherein the basic milk source is milk with a fat content of 3.8%, or the basic milk source is soy milk or almond milk with a plant protein content of ≥2.5%; the preparation steps of the milk drink include: heating the basic milk source to 70°C, adding a stabilizer in an amount of 0.4%, adding an emulsifier in an amount of 0.15%, stirring evenly, adding the selenium-rich yeast powder or selenium-rich plant extract powder prepared in step 1, adjusting the selenium content to 150 micrograms per liter of beverage, continuing to stir until completely dissolved, performing homogenization treatment at a pressure of 20 MPa, sterilizing at a temperature of 121°C for 25 seconds, and finally filling and sealing; The sterilization treatment adopts high temperature short time sterilization (HTST) technology with a temperature of 145°C and a time of 5 seconds, or adopts ultra-high temperature instantaneous sterilization (UHT) technology with a temperature of 150°C and a time of 3 seconds to ensure minimal loss of nutrients and flavor substances in the beverage during the sterilization process. Vitamin E is added to the selenium-rich beverage, and the ratio of vitamin E to selenium content in the selenium-rich beverage is 1:50 to enhance the antioxidant effect and improve the taste of the product.

[0022] Example 4

[0023] The contents of this embodiment are basically the same as those of embodiment 1, except for the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: basic tea is selected as the basis of the beverage and is modulated with the selenium-rich extract prepared in step one. The preparation steps of the tea beverage include: pre-treating the selenium-rich tea or one or more of green tea, black tea and oolong tea, extracting the effective ingredients by water extraction, the ratio of water to tea is 20:1, the temperature is 90°C, the extraction time is 15 minutes, and filtering to obtain tea extract. The tea extract is further concentrated to evaporate water to 30% of the original volume to increase the effective ingredient content of tea polyphenols and amino acids, and the tea extract is mixed with the selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and the selenium content is adjusted to 80 micrograms per liter of beverage. Flavorings are added as needed, sterilized, and filled and sealed.

[0024] Example 5

[0025] The contents of this embodiment are basically the same as those of embodiment 2, and the difference lies in the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: basic tea is selected as the basis of the beverage and is modulated with the selenium-rich extract prepared in step one. The preparation steps of the tea beverage include: pre-treating the selenium-rich tea or one or more of green tea, black tea and oolong tea, extracting the effective ingredients by water extraction, the ratio of water to tea is 23:1, the temperature is 93°C, the extraction time is 20 minutes, filtering to obtain tea extract, the tea extract is further concentrated to evaporate water to 35% of the original volume to increase the effective ingredient content of tea polyphenols and amino acids, the tea extract is mixed with the selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, the selenium content is adjusted to 100 micrograms per liter of beverage, flavorings are added as needed, sterilization is performed, and filling and sealing are performed.

[0026] Example 6

[0027] The contents of this embodiment are basically the same as those of embodiment 3, except for the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: basic tea is selected as the basis of the beverage and is modulated with the selenium-rich extract prepared in step one. The preparation steps of the tea beverage include: pre-treating the selenium-rich tea or one or more of green tea, black tea and oolong tea, extracting the effective ingredients by water extraction, the ratio of water to tea is 25:1, the temperature is 95°C, the extraction time is 25 minutes, and filtering to obtain tea extract. The tea extract is further concentrated to evaporate water to 40% of the original volume to increase the effective ingredient content of tea polyphenols and amino acids, and the tea extract is mixed with the selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and the selenium content is adjusted to 120 micrograms per liter of beverage. Flavorings are added as needed, sterilized, and filled and sealed.

[0028] Example 7

[0029] The contents of this embodiment are basically the same as those of embodiment 1, except for the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: select a basic water source as the basis of the beverage and mix it with the selenium-rich extract prepared in step one. The preparation steps of the water beverage include: selecting selenium-rich mineral water or natural water source, and the natural water source undergoes multi-stage filtration treatment including sand filtration, carbon filtration, ultrafiltration and reverse osmosis to ensure water quality safety, and the selenium content is ≥20μg / L. If the selenium content is insufficient, add the selenium-rich yeast powder, selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and supplement the selenium content to 50 micrograms per liter of beverage. Add flavoring as needed, mix evenly, sterilize, fill and seal.

[0030] Example 8

[0031] The contents of this embodiment are basically the same as those of embodiment 2, and the difference lies in the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: select a basic water source as the basis of the beverage and mix it with the selenium-rich extract prepared in step one. The preparation steps of the water beverage include: selecting selenium-rich mineral water or natural water source, and the natural water source undergoes multi-stage filtration treatment including sand filtration, carbon filtration, ultrafiltration and reverse osmosis to ensure water quality safety, and the selenium content is ≥20μg / L. If the selenium content is insufficient, add the selenium-rich yeast powder, selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and supplement the selenium content to 65 micrograms per liter of beverage. Add flavoring as needed, mix evenly, sterilize, fill and seal.

[0032] Example 9

[0033] The contents of this embodiment are basically the same as those of embodiment 3, except for the preparation of the selenium-rich beverage in step 2 and the selection of the base material of the selenium-rich beverage. Preparation of selenium-rich beverage: select a basic water source as the basis of the beverage and mix it with the selenium-rich extract prepared in step one. The preparation steps of the water beverage include: selecting selenium-rich mineral water or natural water source, and the natural water source undergoes multi-stage filtration treatment including sand filtration, carbon filtration, ultrafiltration and reverse osmosis to ensure water quality safety, and the selenium content is ≥20μg / L. If the selenium content is insufficient, add the selenium-rich yeast powder, selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step one, and supplement the selenium content to 80 micrograms per liter of beverage. Add flavoring as needed, mix evenly, sterilize, fill and seal.

[0034] Components not described in detail herein are prior art.

[0035] Although the specific embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by ordinary technicians in this field, various changes can be made without departing from the purpose of the present invention. Modifications or deformations that do not involve creative work are still within the scope of protection of the present invention.

Claims

1. A method for preparing a selenium-rich beverage, characterized in that: The following steps are involved: Step 1: Preparation of selenium-rich substances: selenium-rich yeast, selenium-rich spirulina or selenium-rich plant extracts are selected as selenium sources; wherein the selenium-rich yeast and selenium-rich spirulina are obtained by fermentation culture, and the fermentation conditions are: temperature 28-32°C, pH 5.5-7.0, ventilation volume 1.0-1.5 vvm, and culture time 72-84 hours; the selenium-rich plant extracts are obtained from selenium-rich plants by water extraction, alcohol extraction or supercritical CO2 extraction, and the extraction conditions include temperature 50-70°C, a solvent-to-water ratio of 1:10 to 1:15, and an extraction time of 2-3 hours; the by-products or semi-finished products produced include fermentation broth, extract, and selenium-rich yeast powder, selenium-rich spirulina powder and / or selenium-rich plant extract powder after centrifugation, filtration and drying; Step 2: Preparation of selenium-rich beverage: Select basic milk source, tea or water source as the beverage base and mix it with the selenium-rich extract prepared in step 1.

2. The method for preparing a selenium-rich beverage according to claim 1, wherein: The preparation steps of the milk drink include: heating a basic milk source to 65-70° C., adding a stabilizer in an amount of 0.2-0.4%, adding an emulsifier in an amount of 0.1-0.15%, stirring evenly, adding the selenium-enriched yeast powder or selenium-enriched plant extract powder prepared in step 1, adjusting the selenium content to 100-150 micrograms per liter of beverage, continuing to stir until completely dissolved, performing homogenization treatment at a pressure of 20 MPa, sterilizing at a temperature of 121° C. for 20-25 seconds, and finally filling and sealing.

3. The method for preparing a selenium-rich beverage according to claim 2, wherein: The basic milk source is milk, and its fat content is 3.2-3.8%.

4. The method for preparing a selenium-rich beverage according to claim 2, wherein: The basic milk source is soy milk or almond milk, and the plant protein content thereof is ≥2.5%.

5. The method for preparing a selenium-rich beverage according to claim 1, wherein: The preparation steps of the tea beverage include: pre-treating selenium-enriched tea leaves or one or more of green tea, black tea and oolong tea, extracting effective ingredients by water extraction, with a water to tea ratio of 20:1 to 25:1, a temperature of 90-95° C., and an extraction time of 15-25 minutes, filtering to obtain a tea extract, mixing the tea extract with the selenium-enriched spirulina powder or selenium-enriched plant extract powder prepared in step 1, adjusting the selenium content to 80-120 μg per liter of beverage, adding flavoring agents as needed, sterilizing, and filling and sealing.

6. The method for preparing a selenium-enriched beverage according to claim 5, characterized in that: The tea extract is further concentrated to evaporate water to 30-40% of the original volume, so as to increase the content of effective components of tea polyphenols and amino acids.

7. The method for preparing a selenium-rich beverage according to claim 1, characterized in that: The preparation steps of the beverage include: selecting selenium-rich mineral water or natural water source with a selenium content of ≥20 μg / L; if the selenium content is insufficient, adding the selenium-rich yeast powder, selenium-rich spirulina powder or selenium-rich plant extract powder prepared in step 1 to replenish the selenium content to 50-80 μg per liter of beverage; adding flavoring as needed; mixing evenly; sterilizing; and filling and sealing.

8. The method for preparing a selenium-rich beverage according to claim 7, characterized in that: The natural water source is processed through multiple stages of filtration including sand filtration, carbon filtration, ultrafiltration and reverse osmosis to ensure water quality safety.

9. A method for preparing a selenium-rich beverage according to any one of claims 2 to 8, characterized in that: The sterilization process adopts high temperature short time sterilization (HTST) technology at a temperature of 135-145°C for 2-5 seconds, or adopts ultra-high temperature instantaneous sterilization (UHT) technology at a temperature of 130-150°C for 1-3 seconds to ensure minimal loss of nutrients and flavor substances in the beverage during the sterilization process.

10. The selenium-rich beverage according to any one of claims 1 to 9, characterized in that: Vitamin E is added to the selenium-rich beverage, and the ratio of vitamin E to the selenium content in the selenium-rich beverage is between 1:10 and 1:50, so as to enhance the antioxidant effect and improve the taste of the product.