Weakly alkaline strontium-rich metasilicic acid-rich mineralized tea bag and preparation method thereof

Abstract

The invention provides a weakly-alkaline strontium-rich metasilicic acid-rich mineralized tea bag and a preparation method thereof, and relates to the technical field of food functional materials.The weakly-alkaline strontium-rich metasilicic acid-rich mineralized tea bag comprises a tea bag body, and tea leaves and a mineralized composition are arranged in the tea bag body; the mineralization composition comprises modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite. By adding natural mineral raw materials, the tea bag is rich in various mineral elements beneficial to the human body, the mineral elements can be slowly released into tea water in the brewing process and absorbed by the human body, and therefore the health-care effects of supplementing microelements needed by the human body, adjusting the physiological function of the human body and the like are achieved; the concentration is naturally regulated and controlled by hydrological circulation, is far lower than the safety limit value of the World Health Organization, and is safer than chemical additives or chemical minerals.

Description

Technical Field

[0001] The present invention relates to the technical field of food functional materials, and in particular, to a weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag and a preparation method thereof. Background Art

[0002] As a convenient and fast way of drinking tea, tea bags are deeply loved by consumers. Traditional tea bags mainly use tea leaves as raw materials, with relatively single functions, mainly meeting people's tea-drinking needs. With the improvement of people's living standards and the increasing attention to health, consumers' demand for beverages with health care functions is constantly increasing. At present, some functional tea bags have also appeared on the market, but most of these tea bags achieve specific functions by adding artificially synthesized chemical additives, resulting in problems of poor safety and mineral imbalance. Summary of the Invention

[0003] The problem solved by the present invention is how to solve the problems of poor safety and mineral imbalance caused by adding artificially synthesized chemical additives to tea bags.

[0004] To solve the above problems, the present invention provides a weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag and a preparation method thereof.

[0005] In a first aspect, the present invention provides a weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag, including a tea bag body. Inside the tea bag body, there are tea leaves and a mineralized composition. The mineralized composition includes modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite;

[0006] The modified celestite is obtained by soaking celestite in a citric acid solution. The modified strontianite is obtained by introducing carbon dioxide gas into a strontianite suspension. The modified dolomite is obtained by calcining dolomite. The modified medical stone is obtained by calcining medical stone and then soaking it in a citric acid solution. The modified zeolite is obtained by calcining zeolite and then soaking it in an NaCl solution. The modified tourmaline is obtained by calcining tourmaline. The modified serpentine is obtained by calcining serpentine. The modified wollastonite is obtained by cleaning and pulverizing wollastonite.

[0007] Optionally, by weight, there are 15-20 parts of tea leaves, 5-10 parts of modified celestite, 5-10 parts of modified strontianite, 1-5 parts of modified dolomite, 10-15 parts of modified medical stone, 10-15 parts of modified zeolite, 1-5 parts of modified tourmaline, 1-5 parts of modified serpentine and 1-5 parts of modified wollastonite inside the tea bag body.

[0008] Optionally, the particle sizes of the modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite are all 80-200 mesh.

[0009] Second aspect, the present invention provides a method for preparing a weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag as described in any one of the above, comprising the following steps:

[0010] Take celestite, strontianite, dolomite, medical stone, zeolite, tourmaline, serpentine and wollastonite, and perform modification operations on them respectively to obtain modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite with particle sizes all of 80-200 mesh;

[0011] Mix the modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine, modified wollastonite and tea leaves evenly according to the weight ratio, and load them into the tea bag body;

[0012] Seal the tea bag body to obtain a tea bag.

[0013] Optionally, seal the tea bag body by means of hot press sealing.

[0014] Optionally, it further includes the step of: performing ultraviolet sterilization treatment on the tea bag for 15-25 minutes.

[0015] Optionally, the step of taking celestite, strontianite, dolomite, medical stone, zeolite, tourmaline, serpentine and wollastonite and performing modification operations on them respectively includes:

[0016] Take celestite, wash it with deionized water, perform crushing, grinding and sieving treatments after drying, put it into a 0.5-1.5 mol / L citric acid solution and stir and soak it at room temperature for 0.5-1 h, filter and wash it until neutral, dry it, and pass through an 80-200 mesh sieve;

[0017] Take strontianite, wash it with deionized water, perform crushing, grinding and sieving treatments after drying, add strontianite to deionized water according to a solid-liquid ratio of 1:5-1:10 to form a suspension and place it in a reaction kettle, continuously introduce carbon dioxide gas under the conditions of a temperature of 20-40 °C and a pressure of 0.2-0.5 MPa, and stir and react at a rotation speed of 200-500 r / min for 1-4 h. After the reaction, filter and separate the precipitate, dry the precipitate, and pass through an 80-200 mesh sieve;

[0018] Take dolomite, wash it with deionized water, perform crushing, grinding and sieving treatments after drying, calcine it in a muffle furnace at 500-700 °C for 0.5-1.5 h, cool it, and pass through an 80-200 mesh sieve;

[0019] Take medical stone, wash it with deionized water, dry it, then crush, grind and sieve it. Place it in a muffle furnace and calcine it at 200 - 300 °C for 2 - 3 h. After calcination, put it into a citric acid solution with a mass - volume ratio of 5 - 15%, stir - react at room temperature for 2 - 4 h, filter with suction, wash until neutral, dry, and sieve through an 80 - 200 - mesh sieve;

[0020] Take zeolite, wash it with deionized water, dry it, then crush, grind and sieve it. Place it in a muffle furnace and calcine it at 250 - 350 °C for 2 - 3 h. After cooling, place it in a 0.5 - 1.5 mol / L NaCl solution and oscillate for 16 - 24 h, filter with suction, wash until neutral, dry, and sieve through an 80 - 200 - mesh sieve;

[0021] Take tourmaline, wash it with deionized water, dry it, then crush, grind and sieve it. Place it in a muffle furnace and calcine it at 400 - 600 °C for 2 - 3 h, cool, and sieve through an 80 - 200 - mesh sieve;

[0022] Take serpentine, wash it with deionized water, dry it, then crush, grind and sieve it. Place it in a crucible and put it into a muffle furnace to calcine at 500 - 700 °C for 2 - 4 h, cool, and sieve through an 80 - 200 - mesh sieve;

[0023] Take wollastonite, wash it with deionized water, dry it, then crush and grind it, and sieve through an 80 - 200 - mesh sieve.

[0024] Optionally, the filling amount of the tea - bag body is 5 - 10 grams.

[0025] The beneficial effects of a weakly - alkaline strontium - rich and metasilicic - acid - rich mineralized tea - bag and its preparation method of the present invention are as follows:

[0026] 1. By adding natural mineral raw materials, the tea - bag is rich in various mineral elements beneficial to the human body. These mineral elements can slowly release into the tea water during brewing and be absorbed by the human body, thus playing health - care roles such as supplementing trace elements required by the human body and regulating the physiological functions of the human body. Moreover, the natural mineral raw materials are slowly dissolved by the geological layer, and their concentration is naturally regulated by the hydrological cycle, far lower than the safety limit of the World Health Organization (WHO), safer than chemical additives or chemical minerals, and avoiding heavy - metal residues that may be caused by impurities introduced by artificial mineralization; natural minerals mostly exist in ionic states or in forms combined with organic acids, their molecular structures are closer to those of minerals in the human body, and the absorption rate is higher. Natural minerals usually contain multiple trace elements (such as strontium, lithium, selenium, etc.), and these elements can regulate the activity of metabolic enzymes at extremely low concentrations;

[0027] 2. There is no heavy - metal exceeding the standard, containing trace elements strontium and metasilicic acid, and both strontium and metasilicic acid can be stably released under water - passing conditions, avoiding the concentration fluctuation of strontium content, ensuring that the strontium content in the effluent water is within the safety standard range and meeting the national standard for strontium - type mineral water for drinking. At the same time, the weakly - alkaline strontium - rich mineralized filter element fully complies with the health and safety standards;

[0028] 3. The weakly alkaline strontium-rich mineralized filter element with antibacterial properties adopts a "dual-mineral synergistic" material system. Through modification technology, the surface of strontium-rich minerals is modified, and at the same time, natural alkaline minerals are introduced to construct a pH buffer system, realizing precise supplementation of trace elements and stable maintenance of a weakly alkaline environment; single addition of minerals can only play the role of supplementing specific elements, and multiple additions need to be combined for use, and the pH value of water cannot be adjusted. Natural minerals can not only supplement various minerals but also adjust the pH value of water to weakly alkaline, which is more beneficial to human health;

[0029] 4. The combination of tea leaves and natural minerals not only enriches the taste and flavor of the tea bag, but also the tea leaves and natural mineral raw materials act synergistically, making the tea bag have various health care effects;

[0030] 5. The preparation method is simple and feasible. Through steps such as modification, mixing, bagging, and sterilization of raw materials, the uniformity of each component in the tea bag and the stability of product quality can be effectively guaranteed, and beneficial mineral elements can be continuously and stably released for a long time. While ensuring the long-term health value of drinking, the service life and cost performance are significantly improved, which is suitable for industrial production. Description of the Drawings

[0031] Figure 1 It is a flow chart of the preparation method of the weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag in this embodiment;

[0032] Figure 2 It is a column chart of the change value of the tea polyphenol concentration of the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the mineralized tea bag of Example 1 soaked in pure water and the original water in this embodiment;

[0033] Figure 3 It is a column chart of the change value of the metasilicate concentration of the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the mineralized tea bag of Example 1 soaked in pure water and the original water in this embodiment;

[0034] Figure 4 It is a statistical chart of the change value of the TDS concentration and pH change value of the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the mineralized tea bag of Example 1 soaked in pure water and the original water in this embodiment;

[0035] Figure 5 It is a column chart of the change value of the strontium ion concentration of the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the mineralized tea bag of Example 1 soaked in pure water and the original water in this embodiment;

[0036] Figure 6It is a bar chart showing the change values of calcium ion concentrations in the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the soaking water of the mineralized tea bag in Example 1 soaked in pure water and the raw water in this embodiment;

[0037] Figure 6 (A) is Figure 6 the bar chart showing the change values of calcium ion concentrations in the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the soaking water of the mineralized tea bag in Example 1 soaked in pure water and the raw water pointed by the arrow in

[0038] Figure 7 It is a bar chart showing the change values of magnesium ion concentrations in the soaking water of tea leaves soaked in BSS mineral water, tea leaves soaked in NF mineral water, and the soaking water of the mineralized tea bag in Example 1 soaked in pure water and the raw water in this embodiment. Detailed implementation manners

[0039] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments described herein. On the contrary, these embodiments are provided to more thoroughly and completely understand the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not used to limit the protection scope of the present invention.

[0040] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific implementation manners and are not intended to limit the present invention;

[0041] The term "including" and its variants used herein are open-ended, that is, "including but not limited to"; the term "based on" is "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description.

[0042] The embodiment of the present invention provides a weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag and a preparation method thereof.

[0043] A weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag provided by an embodiment of the present invention includes a tea bag body, and tea leaves and a mineralized composition are provided in the tea bag body. The mineralized composition includes modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine, and modified wollastonite;

[0044] The modified celestite is obtained by soaking celestite in a citric acid solution, the modified strontianite is obtained by introducing carbon dioxide gas into a strontianite suspension, the modified dolomite is obtained by calcining dolomite, the modified medical stone is obtained by calcining medical stone and then soaking it in a citric acid solution, the modified zeolite is obtained by calcining zeolite and then soaking it in an NaCl solution, the modified tourmaline is obtained by calcining tourmaline, the modified serpentine is obtained by calcining serpentine, and the modified wollastonite is obtained by cleaning, pulverizing and grinding wollastonite.

[0045] In this embodiment, by adding natural mineral raw materials, the tea bag is made to be rich in various mineral elements beneficial to the human body. These mineral elements can be slowly released into the tea water during the brewing process and absorbed by the human body, thereby playing health care roles such as supplementing trace elements required by the human body and regulating the physiological functions of the human body. Moreover, the natural mineral raw materials are slowly dissolved by the geological layer, and their concentration is naturally regulated by the hydrological cycle, far lower than the safety limit of the World Health Organization (WHO), and is safer than chemical additives or chemical minerals, avoiding heavy metal residues that may be caused by impurities introduced by artificial mineralization; natural minerals mostly exist in the form of ions or in combination with organic acids, and their molecular structure is closer to that of minerals in the human body, with a higher absorption rate. Natural minerals usually contain various trace elements (such as strontium, lithium, selenium, etc.), and these elements can regulate the activity of metabolic enzymes at extremely low concentrations; there is no heavy metal exceeding the standard, containing trace elements strontium and metasilicic acid, and both strontium and metasilicic acid can be stably released under water-passing conditions, avoiding fluctuations in the concentration of strontium content, ensuring that the strontium content in the effluent is within the safety standard range and meeting the national standard for drinking strontium-type mineral water. At the same time, the weakly alkaline strontium-rich mineralized filter element fully complies with the health and safety standards; the weakly alkaline strontium-rich mineralized filter element with antibacterial properties adopts a "dual-mineral synergistic" material system, and the surface of the strontium-rich minerals is modified through a modification technology, and at the same time, natural alkaline minerals are introduced to construct a pH buffer system to achieve precise supplementation of trace elements and stable maintenance of a weakly alkaline environment; single addition of minerals can only play the role of supplementing specific elements, and multiple additions need to be combined and used, and the pH value of the water cannot be adjusted. Natural minerals can not only supplement various minerals but also adjust the pH value of the water to weakly alkaline, which is more beneficial to human health; the combination of tea leaves and natural minerals not only enriches the taste and flavor of the tea bag, but also the tea leaves and natural mineral raw materials act synergistically, making the tea bag have multiple health care effects; the preparation method is simple and feasible. Through steps such as modification, mixing, bagging and sterilization of the raw materials, the uniformity of each component in the tea bag and the stability of the product quality can be effectively guaranteed, which is suitable for industrial production.

[0046] Optionally, by weight, the tea bag body is provided with 15 - 20 parts of tea leaves, 5 - 10 parts of modified celestite, 5 - 10 parts of modified strontianite, 1 - 5 parts of modified dolomite, 10 - 15 parts of modified medical stone, 10 - 15 parts of modified zeolite, 1 - 5 parts of modified tourmaline, 1 - 5 parts of modified serpentine and 1 - 5 parts of modified wollastonite.

[0047] Optionally, the particle sizes of modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite are all 80-200 mesh.

[0048] As Figure 1 shown, a preparation method of a weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to another embodiment of the present invention, which is described in any one of the above, includes the following steps:

[0049] Take celestite, strontianite, dolomite, medical stone, zeolite, tourmaline, serpentine and wollastonite, and perform modification operations respectively to obtain modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite with particle sizes of 80-200 mesh;

[0050] Mix the modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine, modified wollastonite and tea evenly according to the weight ratio, and load them into the tea bag body;

[0051] Seal the tea bag body to obtain a tea bag.

[0052] In this embodiment, the preparation method is simple and easy to implement. Through steps such as modification, mixing, bagging and sterilization of raw materials, the uniformity of each component in the tea bag and the stability of product quality can be effectively ensured, which is suitable for industrial production.

[0053] Optionally, the tea bag body is sealed by hot pressing.

[0054] Optionally, it further includes the step of: treating the tea bag with ultraviolet sterilization for 15-25 minutes.

[0055] Optionally, the step of taking celestite, strontianite, dolomite, medical stone, zeolite, tourmaline, serpentine and wollastonite and performing modification operations respectively includes:

[0056] Take celestite, wash it with deionized water, perform crushing, grinding and sieving treatments after drying, put it into a citric acid solution with a concentration of 0.5-1.5 mol / L, stir and soak it at room temperature for 0.5-1 h, filter with suction and wash it until neutral, dry it, and pass through a sieve with 80-200 mesh;

[0057] Wash strontianite with deionized water, and after drying, perform crushing, grinding and sieving treatments. Add strontianite to deionized water at a solid-liquid ratio of 1:5 - 1:10 to form a suspension, place it in a reaction kettle, continuously introduce carbon dioxide gas under the conditions of a temperature of 20 - 40°C and a pressure of 0.2 - 0.5 MPa, and at the same time stir and react at a speed of 200 - 500 r / min for 1 - 4 h. After the reaction, filter and separate the precipitate, dry the precipitate, and sieve it through a 80 - 200 mesh sieve;

[0058] Wash dolomite with deionized water, and after drying, perform crushing, grinding and sieving treatments. Place it in a muffle furnace and calcine it at 500 - 700°C for 0.5 - 1.5 h, cool it, and sieve it through a 80 - 200 mesh sieve;

[0059] Wash medical stone with deionized water, and after drying, perform crushing, grinding and sieving treatments. Place it in a muffle furnace and calcine it at 200 - 300°C for 2 - 3 h. After calcination, put it into a citric acid solution with a mass-volume ratio of 5 - 15%, stir and react at room temperature for 2 - 4 h, filter and wash it until it is neutral, dry it, and sieve it through a 80 - 200 mesh sieve;

[0060] Wash zeolite with deionized water, and after drying, perform crushing, grinding and sieving treatments. Place it in a muffle furnace and calcine it at 250 - 350°C for 2 - 3 h. After cooling, place it in a 0.5 - 1.5 mol / L NaCl solution and oscillate it for 16 - 24 h, filter and wash it until it is neutral, dry it, and sieve it through a 80 - 200 mesh sieve;

[0061] Wash tourmaline with deionized water, and after drying, perform crushing, grinding and sieving treatments. Place it in a muffle furnace and calcine it at 400 - 600°C for 2 - 3 h, cool it, and sieve it through a 80 - 200 mesh sieve;

[0062] Wash serpentine with deionized water, and after drying, perform crushing, grinding and sieving treatments. Place it in a crucible and put it into a muffle furnace to calcine it at 500 - 700°C for 2 - 4 h, cool it, and sieve it through a 80 - 200 mesh sieve;

[0063] Wash wollastonite with deionized water, and after drying, perform crushing and grinding treatments, and sieve it through a 80 - 200 mesh sieve.

[0064] Optionally, the filling amount of the tea bag body is 5 - 10 grams.

[0065] The present invention will be further described below with reference to specific embodiments.

[0066] Example 1, prepare a weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag.

[0067] Step S1, Modification: Modify natural celestite, natural strontianite, natural dolomite, natural medical stone, natural zeolite, natural tourmaline, natural serpentine, and natural wollastonite to prepare modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine, and modified wollastonite. Specifically, it includes:

[0068] Step S11, The modified celestite is prepared by the following method: Celestite is washed with deionized water, dried, crushed, ground, and sieved, then placed in a 0.5 mol / L citric acid solution and stirred at room temperature for 0.5 h, filtered and washed until neutral, dried in an oven, and sieved through an 80-mesh sieve to obtain the modified celestite.

[0069] Step S12, The modified strontianite is prepared by the following method: Strontianite is washed with deionized water, dried, crushed, ground, and sieved, then added to deionized water according to a solid-liquid ratio of 1:10 to form a suspension and placed in a reaction kettle. Carbon dioxide gas is continuously introduced under the conditions of a temperature of 20°C and a pressure of 0.5 MPa, and at the same time, it is stirred and reacted at a speed of 250 r / min for 2 h. After the reaction, the precipitate is filtered and separated, dried in an oven, and sieved through an 80-mesh sieve to obtain the modified strontianite.

[0070] Step S13, The modified dolomite is prepared by the following method: Dolomite is washed with deionized water, dried, crushed, ground, and sieved, then calcined in a muffle furnace at 700°C for 1 h, cooled, and sieved through an 80-mesh sieve to obtain the modified dolomite.

[0071] Step S14, The modified medical stone is prepared by the following method: Medical stone is washed with deionized water, dried, crushed, ground, and sieved, then calcined in a muffle furnace at 300°C for 2 h. Then the calcined medical stone is placed in a 5% mass-volume ratio citric acid solution and stirred at room temperature for 4 h, filtered and washed until neutral, dried in an oven, and sieved through an 80-mesh sieve to obtain the modified medical stone.

[0072] Step S15, The modified zeolite is prepared by the following method: Zeolite is washed with deionized water, dried, crushed, ground, and sieved, then calcined in a muffle furnace at 350°C for 2 h and cooled. The calcined zeolite is placed in a 1 mol / L NaCl solution and oscillated for 24 h, filtered and washed until neutral, dried in an oven, and sieved through an 80-mesh sieve to obtain the modified zeolite.

[0073] Step S16, The modified tourmaline is prepared by the following method: Tourmaline is washed with deionized water, dried, crushed, ground, and sieved, then calcined in a muffle furnace at 600°C for 2 h, cooled, and sieved through an 80-mesh sieve to obtain the modified tourmaline.

[0074] Step S17, the modified serpentine is prepared by the following method: the serpentine is washed with deionized water, dried, crushed, ground and sieved, placed in a crucible and placed in a muffle furnace at 700°C for high-temperature modification, calcined at this temperature for 2 hours, and after cooling, passed through an 80-mesh sieve to obtain the modified serpentine.

[0075] Step S18, the modified wollastonite is prepared by the following method: the wollastonite is washed with deionized water, dried, crushed, ground and sieved, and powder particles with a particle size of 80 mesh are selected to obtain the modified wollastonite.

[0076] Step S2, mixing the raw materials by weight, 25 g of modified celestite, 10 g of modified strontianite, 10 g of modified dolomite, 50 g of modified medical stone, 75 g of modified zeolite, 25 g of modified tourmaline, 15 g of modified serpentine, 10 g of modified wollastonite and 100 g of Biluochun are uniformly mixed according to the density, and each 5 g is a portion, and is loaded into the tea bag body.

[0077] Step S3, sealing the tea bag body by heat-pressing and sealing;

[0078] Step S4, sterilization: sterilize the packaged tea bags by ultraviolet sterilization for 15 minutes, thereby obtaining weakly alkaline strontium-rich metasilicate-rich mineralized Biluochun tea bags.

[0079] Example 2: Preparation of weakly alkaline strontium-rich metasilicic acid mineralized tea bags.

[0080] Step S1, modification: modifying natural celestite, natural strontianite, natural dolomite, natural medical stone, natural zeolite, natural tourmaline, natural serpentine, and natural wollastonite to prepare modified celestite, modified strontianite, modified dolomite, modified medical stone, modified zeolite, modified tourmaline, modified serpentine, and modified wollastonite, specifically comprising:

[0081] Step S11, the modified celestite is prepared by the following method: the celestite is washed with deionized water, dried, crushed, ground and sieved, placed in a 1 mol / L citric acid solution and stirred and soaked at room temperature for 1 hour, filtered and washed until neutral, placed in an oven for drying, and passed through a 120 mesh sieve to obtain the modified celestite.

[0082] Step S12, the modified strontianite is prepared by the following method: the strontianite is washed with deionized water, dried, crushed, ground and sieved, the strontianite is added to deionized water at a solid-liquid ratio of 1:5 to form a suspension, placed in a reactor, and carbon dioxide gas is continuously introduced at a temperature of 40°C and a pressure of 0.2MPa, while stirring at a speed of 200r / min for 4h. After the reaction is completed, the precipitate is filtered and separated, placed in an oven for drying, and passed through a 120-mesh sieve to obtain the modified strontianite.

[0083] Step S13, the modified dolomite is prepared by the following method: The dolomite is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. It is placed in a muffle furnace and calcined at 500 °C for 1.5 h. After cooling, it is sieved through a 120-mesh sieve to obtain the modified dolomite.

[0084] Step S14, the modified medical stone is prepared by the following method: The medical stone is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. It is placed in a muffle furnace and calcined at 200 °C for 3 h. Then the calcined medical stone is put into a citric acid solution with a mass-to-volume ratio of 15%, and stirred at room temperature for 2 h. After suction filtration and washing until neutral, it is put into an oven to be dried, and sieved through a 120-mesh sieve to obtain the modified medical stone.

[0085] Step S15, the modified zeolite is prepared by the following method: The zeolite is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. It is placed in a muffle furnace and calcined at 250 °C for 3 h, and then cooled. The calcined zeolite is placed in a 1.5 mol / L NaCl solution and oscillated for 16 h. After suction filtration and washing until neutral, it is put into an oven to be dried, and sieved through a 120-mesh sieve to obtain the modified zeolite.

[0086] Step S16, the modified tourmaline is prepared by the following method: The tourmaline is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. It is placed in a muffle furnace and calcined at 500 °C for 2.5 h, and then cooled. It is sieved through a 200-mesh sieve to obtain the modified tourmaline.

[0087] Step S17, the modified serpentine is prepared by the following method: The serpentine is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. It is placed in a crucible and put into a muffle furnace for high-temperature modification at 500 °C, and calcined at this temperature for 4 h. After cooling, it is sieved through a 120-mesh sieve to obtain the modified serpentine.

[0088] Step S18, the modified wollastonite is prepared by the following method: The wollastonite is washed with deionized water, and then undergoes drying, crushing, grinding and sieving processes. The powder particles with a particle size of 120 mesh are selected to obtain the modified wollastonite.

[0089] Step S2, ingredient preparation: The ingredients are prepared according to the mass parts of the raw materials. 25 g of modified celestite, 15 g of modified strontianite, 20 g of modified dolomite, 45 g of modified medical stone, 60 g of modified zeolite, 30 g of modified tourmaline, 15 g of modified serpentine, 15 g of modified wollastonite and 100 g of Tieguanyin are mixed evenly according to the density, and every 8 g is taken as one portion and filled into the tea bag body.

[0090] Step S3, bagging: The tea bag body is sealed by hot pressing and sealing.

[0091] Step S4, Sterilization: Sterilize the packaged tea bags by means of ultraviolet sterilization for 20 minutes, thus obtaining the weakly alkaline strontium-rich and metasilicate-rich mineralized Tieguanyin tea bags.

[0092] Example 3, Preparation of weakly alkaline strontium-rich and metasilicate-rich mineralized tea bags.

[0093] Step S1, Modification: Modify natural celestite, natural strontianite, natural dolomite, natural medlar stone, natural zeolite, natural tourmaline, natural serpentine, and natural wollastonite to prepare modified celestite, modified strontianite, modified dolomite, modified medlar stone, modified zeolite, modified tourmaline, modified serpentine, and modified wollastonite. Specifically, it includes:

[0094] Step S11, Preparation of modified celestite: Wash celestite with deionized water, followed by drying, crushing, grinding, and sieving. Then, place it in a 0.5 mol / L citric acid solution and stir at room temperature for 0.5 h. Filter and wash until neutral, then dry in an oven and sieve through an 80-mesh sieve to obtain modified celestite.

[0095] Step S12, Preparation of modified strontianite: Wash strontianite with deionized water, dry it, and then perform crushing, grinding, and sieving. Add strontianite to deionized water at a solid-liquid ratio of 1:10 to form a suspension and place it in a reaction kettle. Continuously introduce carbon dioxide gas under the conditions of a temperature of 20°C and a pressure of 0.5 MPa, and stir and react at a speed of 250 r / min for 2 h. After the reaction, filter and separate the precipitate, dry it in an oven, and sieve through an 80-mesh sieve to obtain modified strontianite.

[0096] Step S13, Preparation of modified dolomite: Wash dolomite with deionized water, followed by drying, crushing, grinding, and sieving. Then, calcine it in a muffle furnace at 700°C for 1 h, cool it, and sieve through an 80-mesh sieve to obtain modified dolomite.

[0097] Step S14, Preparation of modified medlar stone: Wash medlar stone with deionized water, dry it, and then perform crushing, grinding, and sieving. Calcine it in a muffle furnace at 300°C for 2 h. Then, place the calcined medlar stone in a 5% mass-volume ratio citric acid solution and stir and react at room temperature for 4 h. Filter and wash until neutral, dry it in an oven, and sieve through an 80-mesh sieve to obtain modified medlar stone.

[0098] Step S15, Preparation of modified zeolite: Wash zeolite with deionized water, dry it, and then perform crushing, grinding, and sieving. Calcine it in a muffle furnace at 350°C for 2 h and then cool it. Place the calcined zeolite in a 1 mol / L NaCl solution and oscillate for 24 h. Filter and wash until neutral, dry it in an oven, and sieve through an 80-mesh sieve to obtain modified zeolite.

[0099] Step S16, the modified tourmaline is prepared by the following method: the tourmaline is washed with deionized water, dried, crushed, ground and sieved, calcined at 600° C. for 2 h in a muffle furnace, cooled, and sieved through an 80-mesh sieve to obtain the modified tourmaline.

[0100] Step S17, the modified serpentine is prepared by the following method: the serpentine is washed with deionized water, dried, crushed, ground and sieved, placed in a crucible and placed in a muffle furnace at 700°C for high-temperature modification, calcined at this temperature for 2 hours, and after cooling, passed through an 80-mesh sieve to obtain the modified serpentine.

[0101] Step S18, the modified wollastonite is prepared by the following method: the wollastonite is washed with deionized water, dried, crushed, ground and sieved, and powder particles with a particle size of 80 mesh are selected to obtain the modified wollastonite.

[0102] Step S2, mixing the raw materials by weight, uniformly mixing 25 g of modified celestite, 25 g of modified strontianite, 10 g of modified dolomite, 70 g of modified medical stone, 50 g of modified zeolite, 25 g of modified tourmaline, 25 g of modified serpentine, and 25 g of modified wollastonite with 100 g of small-leaf black tea, each 10 g being a portion, and putting them into a tea bag body.

[0103] Step S3, sealing the tea bag body by heat-pressing and sealing;

[0104] Step S4, sterilization: sterilize the packaged tea bags by ultraviolet sterilization for 25 minutes, thereby obtaining weakly alkaline strontium-rich metasilicate-rich mineralized Souchong black tea bags.

[0105] Effect Example

[0106] The weakly alkaline strontium-rich metasilicate-rich mineralized Biluochun tea bag prepared in Example 1 was subjected to a sanitary safety immersion test in accordance with the "Health Law Supervision

[2001] No. 161 Drinking Water Hygiene Standard - Drinking Water Distribution Equipment and Protective Materials Hygiene Safety Evaluation Standard". Prepare soaking water with a pH of 8, a hardness of 100 mg / L, and an effective chlorine of 2 mg / L, soak the tea bag in an ambient temperature of 25°C ± 5°C and protected from light for 24h ± 1h, take another glass container of the same volume, fill it with the test soaking water, and place it under the same conditions for 24h ± 1h as a blank control. After soaking, take out all the water in the container for a sanitary safety test.

[0107] Table 1 Statistical table of sanitary safety immersion test data of Example 1

[0108]

[0109]

[0110] From the results in Table 1, it can be seen that the weakly alkaline strontium-rich and metasilicate-rich mineralized tea bags prepared by the present invention do not show the phenomenon of heavy metal exceeding the standard, and it is a safe and healthy mineralized tea bag preparation technology.

[0111] Figure 2 To conduct a recycling test on the tea bag sample of Example 1, take the tea bag of Example 1 and place it in a 500 mL container, add 500 mL of deionized water, let it stand at room temperature for 30 minutes for leaching, drain for 30 s, and then collect the leaching solution. Repeat this operation 8 times, replacing the deionized water and cleaning the container each time. After centrifugation of the leaching solution, the strontium ion, calcium ion, magnesium ion, and metasilicate contents, as well as the pH value and TDS changes, in the two water samples of the water soaked by the weakly alkaline strontium-rich and metasilicate-rich mineralized tea bag and the raw water are detected according to the method of "GB 5749-2022 Hygienic Standard for Drinking Water", and compared with "GB 8538-2022 Natural Mineral Water for Drinking". Figure 2 The change value of the tea polyphenol concentration in the soaking water and raw water of the tea leaves soaked in BSS mineral water and NF mineral water and the mineralized tea bag (i.e., Example 1) soaked in pure water. The amounts of BSS mineral water, NF mineral water, and pure water used are the same, and the quality and quality of the tea leaves soaked in BSS mineral water and NF mineral water are the same as those of the tea leaves in the mineralized tea bag obtained in Example 1; Figure 3 The change value of the metasilicate (H2SiO3) concentration in the soaking water and raw water of the tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bag obtained by soaking Example 1 in pure water, Figure 4 The column chart shows the change value of the TDS (total dissolved solids) concentration in the soaking water and raw water of the tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bag obtained by soaking Example 1 in pure water, Figure 4 The curve chart shows the change value of the pH value of the soaking water and raw water of the tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bag obtained by soaking Example 1 in pure water. Total dissolved solids (TDS) refers to the total amount of all inorganic salts and organic substances dissolved in water, Figure 5 The change value of the strontium ion concentration in the soaking water and raw water of the tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bag obtained by soaking Example 1 in pure water, Figure 6 and Figure 6 (A) The change value of the calcium ion concentration in the soaking water and raw water of the tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bag obtained by soaking Example 1 in pure water, Figure 7The change values of magnesium ion concentrations in the soaking water of tea leaves soaked in BSS mineral water, NF mineral water, and the mineralized tea bags obtained in Example 1 soaked in purified water, compared with the original water. After 8 cycles of use, the strontium ion and metasilicic acid concentrations still meet the standards of "GB 8538-2022 Drinking Natural Mineral Water", that is, the strontium ion concentration exceeds 0.2 mg / L and the metasilicic acid concentration exceeds 25 mg / L. This shows that the mineral tea bags can continuously and stably release beneficial mineral elements, while ensuring the long-term health value of drinking, significantly improving the service life and cost performance. Among them, BSS (Bisleri Sourceline Silver) is a high-end mineral water brand launched by the Indian Bisleri Group, focusing on the concept of "natural mineral balance"; its water source is located in: the foothills of the Himalayas (for some products) or deep aquifers in southern India (depending on the product line), and the filtration process uses RO (reverse osmosis) filtration and then adds minerals (for some products, natural spring water is directly bottled). The export version is often labeled "Natural Mineral Water", meeting EU / US FDA standards. NF mineral water (Nestlé Pure Life NF) belongs to the global water brand Nestlé Pure Life under Nestlé, customized for markets in the Middle East, Asia and other regions (such as India, Pakistan, etc.), focusing on economy pure mineral water; water source type: mostly deep groundwater or treated municipal water supply (not natural mineral water, belonging to "packaged drinking water"); filtration process: using reverse osmosis (RO) + mineral addition to ensure safety and basic mineral balance.

[0112] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the protection scope of the present invention.

Claims

1. A weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag, characterized in that, It includes a tea bag body, in which tea leaves and a mineralization composition are provided. The mineralization composition includes modified celestite, modified strontianite, modified dolomite, modified medullary stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite; The modified celestite is obtained by soaking celestite in a citric acid solution. The modified strontianite is obtained by introducing carbon dioxide gas into a strontianite suspension. The modified dolomite is obtained by calcining dolomite. The modified medullary stone is obtained by calcining medullary stone and then soaking it in a citric acid solution. The modified zeolite is obtained by calcining zeolite and then soaking it in an NaCl solution. The modified tourmaline is obtained by calcining tourmaline. The modified serpentine is obtained by calcining serpentine. The modified wollastonite is obtained by cleaning, crushing and grinding wollastonite.

2. The weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 1, wherein By weight, there are 15 - 20 parts of tea leaves, 5 - 10 parts of modified celestite, 5 - 10 parts of modified strontianite, 1 - 5 parts of modified dolomite, 10 - 15 parts of modified medullary stone, 10 - 15 parts of modified zeolite, 1 - 5 parts of modified tourmaline, 1 - 5 parts of modified serpentine and 1 - 5 parts of modified wollastonite in the tea bag body.

3. The weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 1, wherein The particle sizes of the modified celestite, the modified strontianite, the modified dolomite, the modified medullary stone, the modified zeolite, the modified tourmaline, the modified serpentine and the modified wollastonite are all 80 - 200 mesh.

4. A method for preparing a weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to any one of claims 1-3, characterized in that, It includes the following steps: Take celestite, strontianite, dolomite, medullary stone, zeolite, tourmaline, serpentine and wollastonite, and perform modification operations respectively to obtain modified celestite, modified strontianite, modified dolomite, modified medullary stone, modified zeolite, modified tourmaline, modified serpentine and modified wollastonite with particle sizes all being 80 - 200 mesh; Mix the modified celestite, the modified strontianite, the modified dolomite, the modified medullary stone, the modified zeolite, the modified tourmaline, the modified serpentine, the modified wollastonite and tea leaves evenly according to the weight ratio, and load them into the tea bag body; Seal the tea bag body to obtain a tea bag.

5. The preparation method of the weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 4, wherein, Seal the tea bag body by means of hot - press sealing.

6. The preparation method of the weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 4, characterized in that, It also includes the step of: performing ultraviolet sterilization treatment on the tea bag for 15 - 25 minutes.

7. The preparation method of the weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 4, characterized in that, The step of taking celestite, strontianite, dolomite, medullary stone, zeolite, tourmaline, serpentine and wollastonite and performing modification operations respectively includes: Take celestite, wash it with deionized water, perform crushing, grinding and sieving after drying, put it into a 0.5 - 1.5 mol / L citric acid solution, stir and soak it at room temperature for 0.5 - 1 h, filter and wash it until neutral, dry it, and sieve it through an 80 - 200 mesh sieve; Take strontianite, wash it with deionized water, perform crushing, grinding and sieving after drying, add the strontianite into deionized water according to a solid - liquid ratio of 1:5 - 1:10 to form a suspension, place it in a reaction kettle, continuously introduce carbon dioxide gas under the conditions of a temperature of 20 - 40 °C and a pressure of 0.2 - 0.5 MPa, and at the same time stir and react at a speed of 200 - 500 r / min for 1 - 4 h. After the reaction ends, filter and separate the precipitate, dry the precipitate, and sieve it through an 80 - 200 mesh sieve; Take dolomite, wash it with deionized water, crush, grind and screen it after drying, place it in a muffle furnace and calcine it at 500 - 700 °C for 0.5 - 1.5 h, cool it, and screen it through an 80 - 200 mesh sieve; Take medical stone, wash it with deionized water, crush, grind and screen it after drying, place it in a muffle furnace and calcine it at 200 - 300 °C for 2 - 3 h, put it into a citric acid solution with a mass - volume ratio of 5 - 15% after calcination, stir - react it at room temperature for 2 - 4 h, filter it with suction and wash it until neutral, dry it, and screen it through an 80 - 200 mesh sieve; Take zeolite, wash it with deionized water, crush, grind and screen it after drying, place it in a muffle furnace and calcine it at 250 - 350 °C for 2 - 3 h, place it in a 0.5 - 1.5 mol / L NaCl solution after cooling and oscillate it for 16 - 24 h, filter it with suction and wash it until neutral, dry it, and screen it through an 80 - 200 mesh sieve; Take tourmaline, wash it with deionized water, crush, grind and screen it after drying, place it in a muffle furnace and calcine it at 400 - 600 °C for 2 - 3 h, cool it, and screen it through an 80 - 200 mesh sieve; Take serpentine, wash it with deionized water, crush, grind and screen it after drying, place it in a crucible and put it into a muffle furnace to calcine it at 500 - 700 °C for 2 - 4 h, cool it, and screen it through an 80 - 200 mesh sieve; Take wollastonite, wash it with deionized water, crush and grind it after drying, and screen it through an 80 - 200 mesh sieve.

8. The preparation method of the weakly alkaline strontium-rich and metasilicic acid-rich mineralized tea bag according to claim 4, characterized in that, The filling amount of the tea - bag body is 5 - 10 grams.

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