Natural plant tea beverage and preparation method thereof

Abstract

The invention relates to the technical field of plant tea beverages, and provides a natural plant tea beverage and a preparation method thereof. Comprising the following raw materials in parts by weight: 2 to 3 parts of Qidan, 0.2 to 0.4 part of litchi pulp, 0.2 to 0.5 part of roxburgh rose fruit, 0.3 to 0.6 part of longan pulp, 0.6 to 1 part of semen cassiae, 0.5 to 1 part of fructus lycii, 0.2 to 0.6 part of chrysanthemum, 0.6 to 0.8 part of snow chrysanthemum, 0.2 to 0.6 part of sweet-scented osmanthus, 0.1 to 0.3 part of wild rose, 0.2 to 0.4 part of lotus leaf, 0.3 to 0.6 part of pericarpium citri reticulatae, 0.4 to 0.8 part of Chinese date, 0.5 to 0.8 part of gynostemma pentaphyllum, 0.1 to 0.3 part of dandelion, 0.1 to 0.2 part of corn stigma, 0.1 to 0.3 part of selenium-containing malt, 0.3 to 0.6 part of angelica sinensis and 0.5 to 0.9 part of liquorice. The beverage is prepared from the following raw materials in parts by weight: 0.7-1 part of codonopsis pilosula, 0.2-0.6 part of astragalus membranaceus, 1-2 parts of desmodium triquetrum, 0.6-1 part of apple slices, 0.4-0.8 part of lemon slices and the balance of purified water. The triquetrous tadehagi herb contains flavonoid components such as tannin and triquetrous tadehagi herb glycoside, the tannin is a polyphenol compound, has very strong astringency and antibacterial property, and can inhibit growth and reproduction of microorganisms so as to play a preservative role, and the triquetrous tadehagi herb belongs to a natural component, so that the triquetrous tadehagi herb preservative is healthier than a chemical preservative.

Description

Technical Field

[0001] The invention relates to the technical field of plant tea beverages, and in particular to a natural plant tea beverage and a preparation method thereof. Background Art

[0002] Tea beverage refers to tea soup made by soaking tea leaves in water and then extracting, filtering, clarifying and other processes, or products made by adding water, sugar solution, acidulant, edible flavor, fruit juice or plant (grain) extract to the tea soup. At present, tea beverages are divided into four categories according to product flavor: tea beverages (tea soup), flavored tea beverages, compound (mixed) tea beverages and tea concentrates. These tea beverages are tea soup made by soaking tea leaves in water and then extracting, filtering, clarifying and other processes, or products made by adding water, sugar solution, acidulant, edible flavor, fruit juice or plant (grain) extract to the tea soup. Generally, the liquid system of tea beverages is unstable, easily oxidized, turns brown at high temperature, loses color, changes taste and destroys aroma.

[0003] After searching, it was found in a Chinese patent (publication number: CN115708534A) that "a natural plant scented tea beverage is composed of the following raw materials: 5-10% natural plant extract, 20-40% jasmine tea extract, 0.015-0.02% sucralose, 0.04-0.05% β-cyclodextrin, 0.08-0.1% sodium D-isoascorbate, 0.05-0.06% edible flavor, and the balance is purified water."

[0004] In order to extend the shelf life of tea beverages, this type of patent generally adds food additives for preservation. The above patent uses sodium D-erythorbate. However, sodium D-erythorbate is a chemical synthetic substance. Long-term intake of sodium D-erythorbate may irritate the gastrointestinal tract and damage the gastrointestinal mucosa. At the same time, sodium D-erythorbate will affect the absorption of vitamin B, leading to malnutrition and physical deficiency. The intake of chemical preservatives similar to sodium D-erythorbate will cause certain damage to the human body. Therefore, the pursuit of natural tea beverages with no side effects and relatively long shelf life has become a demand. In view of this, the present invention proposes a natural plant tea beverage and a preparation method thereof. Summary of the invention

[0005] The invention provides a natural plant tea beverage and a preparation method thereof, which solves the problem of damage to human body caused by adding preservatives to tea beverages in the prior art.

[0006] The technical scheme of the present invention is as follows: a natural plant tea beverage comprises the following raw materials in parts by weight: 2-3 parts of Qidan, 0.2-0.4 parts of litchi pulp, 0.2-0.5 parts of roxburghii fruit, 0.3-0.6 parts of longan pulp, 0.6-1 parts of cassia seed, 0.5-1 parts of wolfberry, 0.2-0.6 parts of chrysanthemum, 0.6-0.8 parts of snow chrysanthemum, 0.2-0.6 parts of osmanthus, 0.1-0.3 parts of wild rose, 0.2-0.4 parts of lotus leaf , 0.3-0.6 parts of dried tangerine peel, 0.4-0.8 parts of jujube, 0.5-0.8 parts of gynostemma pentaphyllum, 0.1-0.3 parts of dandelion, 0.1-0.2 parts of corn silk, 0.1-0.3 parts of selenium-containing malt, 0.3-0.6 parts of angelica, 0.5-0.9 parts of liquorice, 0.7-1 parts of codonopsis pilosula, 0.2-0.6 parts of astragalus, 1-2 parts of calabash tea, 0.6-1 parts of apple slices, 0.4-0.8 parts of lemon slices, and the balance is purified water.

[0007] The present invention also provides a method for preparing a natural plant tea beverage, comprising the following steps:

[0008] S1: Soak and clean. Soak all the raw materials in clean water for 30-60 minutes. Take them out and rinse them with running water until there is no obvious sand or impurities on the surface of all the raw materials.

[0009] S2: Crushing treatment, all materials are put into a crusher for crushing, wherein the motor speed of the crusher is 20000-25000r / min, and the diameter of the raw material particles after crushing is 2-4mm;

[0010] S3: Grading feeding, all raw materials are divided into three times and put into the heating container:

[0011] First, put in one-third of the main ingredients and one-half of the auxiliary ingredients;

[0012] The second time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0013] The third time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0014] S4: Extract the stock solution. The specific implementation process is as follows:

[0015] (1) Add hot water 12-15 times the total weight of the raw materials to the heating container in S3, the hot water temperature is 80-90°C, and heat for 5-10 minutes;

[0016] (2) Filter the mixture in the hot container through a vibrating screen (400×600×100 mm, 40 mesh) to obtain a primary extract, and put the filtered residue back into the heating container. The primary extract is cooled for later use;

[0017] (3) Add 10-12 times the total weight of the raw materials into the heating container with hot water at a temperature of 80-90°C and heat for 10-15 minutes;

[0018] (4) filtering the mixture in the hot container again through a vibrating sieve (400×600×100 mm, 40 mesh) to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract;

[0019] S5: centrifugal treatment, putting the mixed extract in S4 into a disc centrifuge for centrifugal treatment to obtain a centrifuged extract;

[0020] S6: high temperature sterilization, sterilizing the centrifugal extract in S5 by ultra-high temperature instant sterilization machine to obtain a sterilized extract;

[0021] S7: Canning and packaging: fill the sterilized extract in S6 into a glass container or a fresh-keeping food grade can container, and then seal it.

[0022] Preferably, in S3, the main ingredients are Qidan and Hulu tea, and the auxiliary materials are other raw materials except the main ingredients (excluding purified water).

[0023] Preferably, in S5, the specific process of centrifugation is as follows:

[0024] (1) According to the operating procedures of the disc centrifuge, start the motor to rotate the drum and disc until the rotation speed reaches the predetermined speed;

[0025] (2) Then, the mixed extract in S4 is added into the drum through the inlet device. The adding speed should be moderate to avoid excessive turbulence and eddy currents of the mixed solution in the drum. The separation time is 5-8 minutes;

[0026] (3) Under the action of centrifugal force, the different components in the mixed extract begin to separate. The components with higher density are thrown to the outside of the drum, while the components with lower density tend to concentrate on the inside of the drum, so that the raw material extract is separated from the mixed slag particles to obtain a centrifugal extract.

[0027] Preferably, the predetermined speed of the disc centrifuge is 10000-20000 rpm, the slag discharge cycle is 200-240 s / time, and the centrifugal flow rate is 4-4.5 T / hr.

[0028] Preferably, in S6, the specific process of high temperature sterilization is as follows:

[0029] (1) The centrifugal extract in S5 is introduced into a preheating chamber through a pipeline, and the mixed solution is preheated by high-temperature steam or a heating element;

[0030] (2) then heating the centrifugal extract to 135-150°C and maintaining for 2-5 seconds;

[0031] (3) Open the temperature-uniform valve to allow the heated centrifugal extract to contact the spiral tube filled with cooling water to achieve rapid cooling, thereby obtaining a sterilized extract.

[0032] Preferably, the preheating temperature of the centrifugal extract is 80-90°C, and the cooling temperature of the sterilized extract is 30-45°C.

[0033] Preferably, in S7, the specific process of canning and packaging is as follows:

[0034] (1) Sampling and testing the sterilized extract in S6, including microbial testing and chemical index testing, to ensure the sterilization effect;

[0035] (2) introducing the sterilized extract from the inlet end of the filling equipment, and then filling the sterilized extract into the corresponding glass container or fresh-keeping food grade can container through the filling equipment;

[0036] (3) Then, the capping bottle or can lid containing the sterilized extract is tightly combined with the glass container or fresh-keeping food grade can container by a sealing machine through mechanical pressure to form a seal.

[0037] The working principle and beneficial effects of the present invention are:

[0038] 1. Gourd tea contains flavonoids such as tannins and cucurbitacin. Tannins are a type of polyphenol compound with strong astringency and antibacterial properties. They can inhibit the growth and reproduction of microorganisms, thereby playing a preservative role. Since gourd tea is a natural ingredient, it is healthier than chemical preservatives. In addition, gourd tea is rich in vitamin C, minerals and antioxidants, which helps promote metabolism, lower blood pressure and cholesterol, and has certain benefits for human health.

[0039] 2. The main ingredient of Qidan is tea polyphenols, which have multiple biological activities, such as anti-oxidation, anti-inflammatory, and antibacterial, and have a wide range of promoting effects on human health. It can remove free radicals in the body and protect cells from oxidative damage, thereby delaying the aging process; caffeine is another important ingredient in Qidan, which has the effects of refreshing the brain, diuresis and swelling. Caffeine can stimulate the central nervous system, increase the body's alertness and attention, and thus improve the mental state. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Figure 1 This is a graph showing the change in the number of bacteria inside a beverage as the storage time increases in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1:

[0044] This embodiment proposes a natural plant tea beverage, comprising the following raw materials in parts by weight: 3 parts of Qidan, 0.4 parts of litchi meat, 0.2 parts of sea buckthorn fruit, 0.6 parts of longan meat, 1 part of cassia seed, 0.5 parts of wolfberry, 0.2 parts of chrysanthemum, 0.8 parts of snow chrysanthemum, 0.2 parts of osmanthus, 0.3 parts of wild rose, 0.2 parts of lotus leaf, 0.3 parts of tangerine peel, 0.8 parts of jujube, 0.8 parts of Gynostemma pentaphyllum, 0.1 parts of dandelion, 0.2 parts of corn silk, 0.1 parts of selenium-attached malt, 0.3 parts of angelica, 0.5 parts of licorice, 0.7 parts of Codonopsis pilosula, 0.2 parts of Astragalus, 2 parts of gourd tea, 1 part of apple slices, 0.8 parts of lemon slices, and the balance is purified water.

[0045] In this embodiment, gourd tea contains flavonoid components such as tannins and cucurbitacin. Tannins are a type of polyphenol compound with strong astringency and antibacterial properties, which can inhibit the growth and reproduction of microorganisms, thereby playing an antiseptic role. Since gourd tea is a natural ingredient, it is healthier than chemical preservatives. In addition, gourd tea is rich in vitamin C, minerals and antioxidants, which helps to promote metabolism, lower blood pressure and cholesterol, and has certain benefits to human health.

[0046] Qidan: The main ingredient is tea polyphenols, which have multiple biological activities, such as anti-oxidation, anti-inflammatory, and antibacterial, and have a wide range of promoting effects on human health. It can remove free radicals in the body and protect cells from oxidative damage, thereby delaying the aging process; Caffeine is another important ingredient in Qidan, which has the effects of refreshing the mind, diuresis, and swelling. Caffeine can stimulate the central nervous system, increase the body's alertness and attention, and thus improve the mental state;

[0047] Lychee meat: It is rich in nutrients, such as sugar, vitamin C, vitamin A, B vitamins, minerals, protein and fat, etc. These ingredients have many benefits for the human body, such as providing energy, enhancing immunity and promoting metabolism, etc.

[0048] Rosa roxburghii: It contains much more antioxidants than other commonly eaten fruits. This antioxidant can help the body resist the damage of free radicals, enhance the immune system, promote wound healing, etc. It contains cellulose, which can promote intestinal peristalsis, help defecation, and prevent digestive problems such as constipation.

[0049] Cassia seed: Contains anthraquinone components, other chemical components and rich nutrients. These components work together to make Cassia seed have multiple pharmacological effects such as clearing heat, moistening the intestines, laxative, lowering blood pressure, lowering blood lipids, anti-oxidation, and anti-inflammatory;

[0050] Gynostemma pentaphyllum: It is rich in nutrients, including gypenosides, multiple vitamins (such as vitamin C, vitamin E) and antioxidants such as flavonoids. It is rich in gypenosides, which helps to lower the total cholesterol and low-density lipoprotein cholesterol levels in the blood, while increasing the proportion of high-density lipoprotein cholesterol, thereby assisting in regulating blood;

[0051] Selenium-containing malt: rich in selenium, which is an excellent antioxidant that can remove free radicals, reduce oxidative damage, delay cell aging, prevent diseases, promote metabolism in the body, improve energy utilization, help the body absorb nutrients more effectively, and maintain a healthy state of the body;

[0052] Codonopsis: It contains rich nutrients, such as polysaccharides, saponins, amino acids, trace elements, etc. It can effectively supplement the Qi and blood needed by the human body, and has a good conditioning effect on people with insufficient Qi and blood;

[0053] Corn silk: It is rich in potassium, which helps the body excrete excess water and salt, thereby relieving edema symptoms. It is often used to treat edema symptoms caused by nephritis, nephrotic syndrome, etc. It has a choleretic effect and can be used to treat hepatobiliary diseases such as cholecystitis and gallstones;

[0054] Chrysanthemum: Contains flavonoids and a variety of trace elements that help relieve eye fatigue and improve the symptoms of yellow eyes. In addition, because Cassia seed contains a large amount of emodin (which can easily irritate the gastrointestinal tract and cause indigestion), chrysanthemum helps the liver metabolize, thereby accelerating the metabolism of emodin.

[0055] Lycium barbarum: contains carotene, vitamin B1, B2 and other ingredients, which not only help to improve eye fatigue and prevent yellowing of eyes, but also indirectly regulate the metabolism of rhein by nourishing the liver;

[0056] Honeysuckle: It has the effects of clearing away heat and detoxifying, cooling blood and reducing swelling. It is rich in organic acids such as chlorogenic acid, which helps to remove heat and toxins from the body and may indirectly help regulate certain discomforts caused by rheumatoid arthritis.

[0057] Apple slices: contain a variety of vitamins, such as vitamin A, vitamin C, vitamin E, etc. These vitamins play an important role in maintaining normal physiological functions of the human body. In addition, since gourd tea contains oxalic acid (which inhibits the body's absorption of minerals), and apple slices are rich in organic acids such as malic acid, the overall alkaline reaction can neutralize oxalic acid and reduce the adverse effects of oxalic acid in Cassia seed.

[0058] Lemon slices: Rich in vitamins, especially vitamin C. Vitamin C is a powerful antioxidant that can remove free radicals in the body, protect cells from oxidative damage, and delay aging. It is rich in citric acid, which will produce alkaline substances after metabolism in the body, which helps to neutralize oxalic acid and reduce the adverse effects of oxalic acid in Cassia seed.

[0059] The present invention also provides a method for preparing a natural plant tea beverage, comprising the following steps:

[0060] S1: Soak and clean. Soak all the raw materials in clean water for 30 minutes. Take them out and rinse them with running water until there is no obvious sand or impurities on the surface of all the raw materials.

[0061] S2: Crushing treatment, all materials are put into a crusher for crushing, wherein the motor speed of the crusher is 25000r / min, and the diameter of the raw material particles after crushing is 2mm;

[0062] S3: Grading feeding, all raw materials are divided into three times and put into the heating container:

[0063] First, one-third of the main ingredients and one-half of the auxiliary ingredients are put in. The main ingredients are Qidan and Hulu tea, and the auxiliary ingredients are other raw materials except the main ingredients (excluding purified water);

[0064] The second time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0065] The third time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0066] S4: Extract the stock solution. The specific implementation process is as follows:

[0067] (1) Add hot water 12 times the total weight of the raw materials to the heating container in S3, the hot water temperature is 80°C, and heat for 10 minutes;

[0068] (2) Filter the mixture in the hot container through a vibrating screen (400×600×100 mm, 40 mesh) to obtain a primary extract, and put the filtered residue back into the heating container. The primary extract is cooled for later use;

[0069] (3) Add 10-12 times the total weight of the raw materials into the heating container with hot water at 80°C and heat for 15 minutes;

[0070] (4) filtering the mixture in the hot container again through a vibrating sieve (400×600×100 mm, 40 mesh) to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract;

[0071] S5: centrifugal treatment, putting the mixed extract in S4 into a disc centrifuge for centrifugal treatment to obtain a centrifuged extract;

[0072] S6: high temperature sterilization, sterilizing the centrifugal extract in S5 by ultra-high temperature instant sterilization machine to obtain a sterilized extract;

[0073] S7: Canning and packaging: fill the sterilized extract in S6 into a glass container or a fresh-keeping food grade can container, and then seal it.

[0074] Further, in S5, the specific process of centrifugal treatment is as follows:

[0075] (1) According to the operating procedures of the disc centrifuge, start the motor to rotate the drum and disc until the rotation speed reaches the predetermined speed. The predetermined speed of the disc centrifuge is 20,000 rpm, the slag discharge cycle is 240 s / time, and the centrifugal flow rate is 4 T / hr;

[0076] (2) Then, the mixed extract in S4 is added into the drum through the inlet device. The adding speed should be moderate to avoid excessive turbulence and eddy currents of the mixed solution in the drum. The separation time is 8 minutes;

[0077] (3) Under the action of centrifugal force, the different components in the mixed extract begin to separate. The components with higher density are thrown to the outside of the drum, while the components with lower density tend to concentrate on the inside of the drum, so that the raw material extract is separated from the mixed slag particles to obtain a centrifugal extract.

[0078] Furthermore, in S6, the specific process of high temperature sterilization is as follows:

[0079] (1) The centrifugal extract in S5 is introduced into the preheating chamber through a pipeline, and the mixed solution is preheated by high-temperature steam or a heating element, and the preheating temperature is 80° C.;

[0080] (2) Then heat the centrifugal extract to 135°C and hold for 5 seconds;

[0081] (3) Open the temperature-uniform valve to allow the heated centrifugal extract to contact the spiral tube filled with cooling water to achieve rapid cooling. The cooling temperature is 45°C to obtain a sterilized extract.

[0082] Furthermore, in S7, the specific process of canning and packaging is as follows:

[0083] (1) Sampling and testing the sterilized extract in S6, including microbial testing and chemical index testing, to ensure the sterilization effect;

[0084] (2) introducing the sterilized extract from the inlet end of the filling equipment, and then filling the sterilized extract into the corresponding glass container or fresh-keeping food grade can container through the filling equipment;

[0085] (3) Then, the capping bottle or can lid containing the sterilized extract is tightly combined with the glass container or fresh-keeping food grade can container by a sealing machine through mechanical pressure to form a seal.

[0086] Embodiment 2:

[0087] This embodiment proposes a natural plant tea beverage, comprising the following raw materials in parts by weight: 2.5 parts of Qidan, 0.3 parts of litchi meat, 0.4 parts of sea buckthorn fruit, 0.35 parts of longan meat, 0.8 parts of cassia seed, 0.7 parts of wolfberry, 0.4 parts of chrysanthemum, 0.7 parts of snow chrysanthemum, 0.45 parts of osmanthus, 0.2 parts of wild rose, 0.25 parts of lotus leaf, 0.45 parts of tangerine peel, 0.6 parts of jujube, 0.7 parts of Gynostemma pentaphyllum, 0.2 parts of dandelion, 0.15 parts of corn silk, 0.2 parts of selenium-attached malt, 0.45 parts of angelica, 0.7 parts of licorice, 0.85 parts of Codonopsis pilosula, 0.45 parts of Astragalus, 1.5 parts of gourd tea, 0.8 parts of apple slices, 0.6 parts of lemon slices, and the balance is purified water.

[0088] The present invention also provides a method for preparing a natural plant tea beverage, comprising the following steps:

[0089] S1: Soak and clean. Soak all the raw materials in clean water for 45 minutes. Take them out and rinse them with running water until there is no obvious sand or impurities on the surface of all the raw materials.

[0090] S2: Crushing treatment, all materials are put into a crusher for crushing, wherein the motor speed of the crusher is 23000r / min, and the diameter of the raw material particles after crushing is 3mm;

[0091] S3: Grading feeding, all raw materials are divided into three times and put into the heating container:

[0092] First, one-third of the main ingredients and one-half of the auxiliary ingredients are put in. The main ingredients are Qidan and Hulu tea, and the auxiliary ingredients are other raw materials except the main ingredients (excluding purified water);

[0093] The second time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0094] The third time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0095] S4: Extract the stock solution. The specific implementation process is as follows:

[0096] (1) Add 14 times the total weight of the raw materials to the heating container in S3, the hot water temperature is 85°C, and heat for 8 minutes;

[0097] (2) Filter the mixture in the hot container through a vibrating screen (400×600×100 mm, 40 mesh) to obtain a primary extract, and put the filtered residue back into the heating container. The primary extract is cooled for later use;

[0098] (3) Add 11 times the total weight of the raw materials into the heating container with hot water at a temperature of 85°C and heat for 8 minutes;

[0099] (4) filtering the mixture in the hot container again through a vibrating sieve (400×600×100 mm, 40 mesh) to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract;

[0100] S5: centrifugal treatment, putting the mixed extract in S4 into a disc centrifuge for centrifugal treatment to obtain a centrifuged extract;

[0101] S6: high temperature sterilization, sterilizing the centrifugal extract in S5 by ultra-high temperature instant sterilization machine to obtain a sterilized extract;

[0102] S7: Canning and packaging: fill the sterilized extract in S6 into a glass container or a fresh-keeping food grade can container, and then seal it.

[0103] Further, in S5, the specific process of centrifugal treatment is as follows:

[0104] (1) According to the operating procedures of the disc centrifuge, start the motor to rotate the drum and disc until the rotation speed reaches the predetermined speed. The predetermined speed of the disc centrifuge is 15000 rpm, the slag discharge cycle is 230 s / time, and the centrifugal flow rate is 4.3 T / hr;

[0105] (2) Then, the mixed extract in S4 is added into the drum through the inlet device. The adding speed should be moderate to avoid excessive turbulence and eddy currents of the mixed solution in the drum. The separation time is 7 minutes;

[0106] (3) Under the action of centrifugal force, the different components in the mixed extract begin to separate. The components with higher density are thrown to the outside of the drum, while the components with lower density tend to concentrate on the inside of the drum, so that the raw material extract is separated from the mixed slag particles to obtain a centrifugal extract.

[0107] Furthermore, in S6, the specific process of high temperature sterilization is as follows:

[0108] (1) The centrifugal extract in S5 is introduced into the preheating chamber through a pipeline, and the mixed solution is preheated by high-temperature steam or a heating element, and the preheating temperature is 85° C.

[0109] (2) Then heat the centrifugal extract to 140°C and hold for 4 seconds;

[0110] (3) Open the temperature-uniform valve to allow the heated centrifugal extract to contact the spiral tube filled with cooling water to achieve rapid cooling. The cooling temperature is 40° C. to obtain a sterilized extract.

[0111] Furthermore, in S7, the specific process of canning and packaging is as follows:

[0112] (1) Sampling and testing the sterilized extract in S6, including microbial testing and chemical index testing, to ensure the sterilization effect;

[0113] (2) introducing the sterilized extract from the inlet end of the filling equipment, and then filling the sterilized extract into the corresponding glass container or fresh-keeping food grade can container through the filling equipment;

[0114] (3) Then, the capping bottle or can lid containing the sterilized extract is tightly combined with the glass container or fresh-keeping food grade can container by a sealing machine through mechanical pressure to form a seal.

[0115] Embodiment three:

[0116] The present embodiment proposes a natural plant tea beverage, comprising the following raw materials in parts by weight: 2 parts of Qidan, 0.2 parts of litchi meat, 0.5 parts of sea buckthorn fruit, 0.3 parts of longan meat, 0.6 parts of cassia seed, 1 part of wolfberry, 0.6 parts of chrysanthemum, 0.6 parts of snow chrysanthemum, 0.2 parts of osmanthus, 0.3 parts of wild rose, 0.2 parts of lotus leaf, 0.6 parts of tangerine peel, 0.8 parts of jujube, 0.8 parts of Gynostemma pentaphyllum, 0.1 parts of dandelion, 0.2 parts of corn silk, 0.1 parts of selenium-attached malt, 0.6 parts of angelica, 0.5 parts of licorice, 1 part of Codonopsis pilosula, 0.6 parts of Astragalus, 1 part of gourd tea, 0.6 parts of apple slices, 0.4 parts of lemon slices, and the balance is purified water.

[0117] The present invention also provides a method for preparing a natural plant tea beverage, comprising the following steps:

[0118] S1: Soak and clean. Soak all the raw materials in clean water for 60 minutes. Take them out and rinse them with running water until there is no obvious sand or impurities on the surface of all the raw materials.

[0119] S2: Crushing treatment, all materials are put into a crusher for crushing, wherein the motor speed of the crusher is 25000r / min, and the diameter of the raw material particles after crushing is 4mm;

[0120] S3: Grading feeding, all raw materials are divided into three times and put into the heating container:

[0121] First, one-third of the main ingredients and one-half of the auxiliary ingredients are put in. The main ingredients are Qidan and Hulu tea, and the auxiliary ingredients are other raw materials except the main ingredients (excluding purified water);

[0122] The second time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0123] The third time, add one third of the main ingredients and one quarter of the auxiliary ingredients;

[0124] S4: Extract the stock solution. The specific implementation process is as follows:

[0125] (1) Add 15 times the total weight of the raw materials to the heating container in S3, the hot water temperature is 90°C, and heat for 10 minutes;

[0126] (2) Filter the mixture in the hot container through a vibrating screen (400×600×100 mm, 40 mesh) to obtain a primary extract, and put the filtered residue back into the heating container. The primary extract is cooled for later use;

[0127] (3) Add 12 times the total weight of the raw materials into the heating container with hot water at 90°C and heat for 15 minutes;

[0128] (4) filtering the mixture in the hot container again through a vibrating sieve (400×600×100 mm, 40 mesh) to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract;

[0129] S5: centrifugal treatment, putting the mixed extract in S4 into a disc centrifuge for centrifugal treatment to obtain a centrifuged extract;

[0130] S6: high temperature sterilization, sterilizing the centrifugal extract in S5 by ultra-high temperature instant sterilization machine to obtain a sterilized extract;

[0131] S7: Canning and packaging: fill the sterilized extract in S6 into a glass container or a fresh-keeping food grade can container, and then seal it.

[0132] Further, in S5, the specific process of centrifugal treatment is as follows:

[0133] (1) According to the operating procedures of the disc centrifuge, start the motor to rotate the drum and disc until the rotation speed reaches the predetermined speed. The predetermined speed of the disc centrifuge is 20,000 rpm, the slag discharge cycle is 240 s / time, and the centrifugal flow rate is 4.5 T / hr;

[0134] (2) Then, the mixed extract in S4 is added into the drum through the inlet device. The adding speed should be moderate to avoid excessive turbulence and eddy currents of the mixed solution in the drum. The separation time is 8 minutes;

[0135] (3) Under the action of centrifugal force, the different components in the mixed extract begin to separate. The components with higher density are thrown to the outside of the drum, while the components with lower density tend to concentrate on the inside of the drum, so that the raw material extract is separated from the mixed slag particles to obtain a centrifugal extract.

[0136] Furthermore, in S6, the specific process of high temperature sterilization is as follows:

[0137] (1) The centrifugal extract in S5 is introduced into the preheating chamber through a pipeline, and the mixed solution is preheated by high-temperature steam or a heating element, and the preheating temperature is 90° C.;

[0138] (2) Then heat the centrifugal extract to 150°C and hold for 5 seconds;

[0139] (3) Open the temperature-uniform valve to allow the heated centrifugal extract to contact the spiral tube filled with cooling water to achieve rapid cooling. The cooling temperature is 45°C to obtain a sterilized extract.

[0140] Furthermore, in S7, the specific process of canning and packaging is as follows:

[0141] (1) Sampling and testing the sterilized extract in S6, including microbial testing and chemical index testing, to ensure the sterilization effect;

[0142] (2) introducing the sterilized extract from the inlet end of the filling equipment, and then filling the sterilized extract into the corresponding glass container or fresh-keeping food grade can container through the filling equipment;

[0143] (3) Then, the capping bottle or can lid containing the sterilized extract is tightly combined with the glass container or fresh-keeping food grade can container by a sealing machine through mechanical pressure to form a seal.

[0144] A comparative example is set up. The only difference between the comparative example and Example 1 is that the natural plant tea beverage comprises the following raw materials in parts by weight: 2 parts of Qidan, 0.2 parts of litchi meat, 0.5 parts of sea buckthorn fruit, 0.3 parts of longan meat, 0.6 parts of cassia seed, 1 part of wolfberry, 0.6 parts of chrysanthemum, 0.6 parts of snow chrysanthemum, 0.2 parts of osmanthus, 0.3 parts of wild rose, 0.2 parts of lotus leaf, 0.6 parts of tangerine peel, 0.8 parts of jujube, 0.8 parts of Gynostemma pentaphyllum, 0.1 parts of dandelion, 0.2 parts of corn silk, 0.1 parts of selenium-attached malt, 0.6 parts of angelica, 0.5 parts of licorice, 1 part of Codonopsis pilosula, 0.6 parts of Astragalus, and the balance is purified water.

[0145] The specific steps of the preparation method of the above-mentioned natural plant tea beverage are as follows:

[0146] A. Soak all the raw materials for 30 minutes, then put them into the grinder for crushing;

[0147] B. All raw materials are put into a heating container three times, and then hot water 12 times the total weight of the raw materials is added to the heating container, and then filtered through a vibrating screen to obtain a primary extract, and the filtered residue is put back into the heating container;

[0148] C. Adding hot water 10 times the total weight of the raw materials into the heating container, filtering through a vibrating screen to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract;

[0149] D. Put the mixed extract into a disc centrifuge for psychological treatment to obtain a centrifuged extract, and then sterilize it in an ultra-high temperature instant sterilizer to obtain a sterilized extract;

[0150] E. Fill the sterilized extract into a glass container and seal it.

[0151] Experimental verification:

[0152] 200 ml of extract was taken out from the glass containers in Example 1, Example 2, Example 3 and the comparative example through a rubber-tipped dropper, and then introduced into four sealed bottles, each of which was equipped with a sampling tube with a valve. The four sealed bottles were stored in a dry area, and 25 ml of sample liquid was taken out through the sampling tubes of the four sealed bottles every 5 days, and then the total number of bacteria in the four sample liquids was determined by the plate count method. The determination results are shown as follows: Figure 1 As shown;

[0153] From the above experimental results, it can be seen that as the amount of gourd tea in the extract raw material decreases, the shelf life of the extract becomes shorter. This means that gourd tea can effectively extend the shelf life of the extract, thereby greatly improving the shelf life of the beverage. Gourd tea is a natural material and is healthier than chemical preservatives.

[0154] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A natural plant tea beverage, characterized in that: The invention comprises the following raw materials in parts by weight: 2-3 parts of Qidan, 0.2-0.4 parts of litchi pulp, 0.2-0.5 parts of roxburghii fruit, 0.3-0.6 parts of longan pulp, 0.6-1 parts of cassia seed, 0.5-1 parts of wolfberry, 0.2-0.6 parts of chrysanthemum, 0.6-0.8 parts of snow chrysanthemum, 0.2-0.6 parts of osmanthus, 0.1-0.3 parts of wild rose, 0.2-0.4 parts of lotus leaf, 0.3-0.6 parts of tangerine peel. , 0.4-0.8 parts of jujube, 0.5-0.8 parts of Gynostemma pentaphyllum, 0.1-0.3 parts of dandelion, 0.1-0.2 parts of corn silk, 0.1-0.3 parts of selenium-containing malt, 0.3-0.6 parts of angelica, 0.5-0.9 parts of licorice, 0.7-1 parts of Codonopsis pilosula, 0.2-0.6 parts of Astragalus, 1-2 parts of gourd tea, 0.6-1 parts of apple slices, 0.4-0.8 parts of lemon slices, and the balance is purified water.

2. A method for preparing a natural plant tea beverage according to claim 1, characterized in that: The steps include: S1: Soak and clean. Soak all the raw materials in clean water for 30-60 minutes. Take them out and rinse them with running water until there is no obvious sand or impurities on the surface of all the raw materials. S2: Crushing treatment, all materials are put into a crusher for crushing, wherein the motor speed of the crusher is 20000-25000r / min, and the diameter of the raw material particles after crushing is 2-4mm; S3: Grading feeding, all raw materials are divided into three times and put into the heating container: First, put in one-third of the main ingredients and one-half of the auxiliary ingredients; The second time, add one third of the main ingredients and one quarter of the auxiliary ingredients; The third time, add one third of the main ingredients and one quarter of the auxiliary ingredients; S4: Extract the stock solution. The specific implementation process is as follows: (1) Add hot water 12-15 times the total weight of the raw materials to the heating container in S3, the hot water temperature is 80-90°C, and heat for 5-10 minutes; (2) Filter the mixture in the hot container through a vibrating screen (400×600×100 mm, 40 mesh) to obtain a primary extract, and put the filtered residue back into the heating container. The primary extract is cooled for later use; (3) Add 10-12 times the total weight of the raw materials into the heating container with hot water at a temperature of 80-90°C and heat for 10-15 minutes; (4) filtering the mixture in the hot container again through a vibrating sieve (400×600×100 mm, 40 mesh) to obtain a secondary extract, and then mixing the secondary extract with the primary extract to obtain a mixed extract; S5: centrifugal treatment, putting the mixed extract in S4 into a disc centrifuge for centrifugal treatment to obtain a centrifuged extract; S6: high temperature sterilization, sterilizing the centrifugal extract in S5 by ultra-high temperature instant sterilization machine to obtain a sterilized extract; S7: Canning and packaging: fill the sterilized extract in S6 into a glass container or a fresh-keeping food grade can container, and then seal it.

3. The method for preparing a natural plant tea beverage according to claim 2, characterized in that: In S3, the main ingredients are Qidan and Hulu tea, and the auxiliary materials are other raw materials except the main ingredients (excluding purified water).

4. The method for making a natural plant tea beverage according to claim 2, characterized in that: In S5, the specific process of centrifugal treatment is as follows: (1) According to the operating procedures of the disc centrifuge, start the motor to rotate the drum and disc until the rotation speed reaches the predetermined speed; (2) Then, the mixed extract in S4 is added into the drum through the inlet device. The adding speed should be moderate to avoid excessive turbulence and eddy currents of the mixed solution in the drum. The separation time is 5-8 minutes; (3) Under the action of centrifugal force, the different components in the mixed extract begin to separate. The components with higher density are thrown to the outside of the drum, while the components with lower density tend to concentrate on the inside of the drum, so that the raw material extract is separated from the mixed slag particles to obtain a centrifugal extract.

5. The method for preparing a natural plant tea beverage according to claim 4, characterized in that: The predetermined speed of the disc centrifuge is 10000-20000 rpm, the slag discharge cycle is 200-240 s / time, and the centrifugal flow rate is 4-4.5 T / hr.

6. The method for making a natural plant tea beverage according to claim 2, characterized in that: In S6, the specific process of high temperature sterilization is as follows: (1) The centrifugal extract in S5 is introduced into a preheating chamber through a pipeline, and the mixed solution is preheated by high-temperature steam or a heating element; (2) then heating the centrifugal extract to 135-150°C and maintaining for 2-5 seconds; (3) Open the temperature-uniform valve to allow the heated centrifugal extract to contact the spiral tube filled with cooling water to achieve rapid cooling, thereby obtaining a sterilized extract.

7. The method for making a natural plant tea beverage according to claim 6, characterized in that: The preheating temperature of the centrifugal extract is 80-90°C, and the cooling temperature of the sterilized extract is 30-45°C.

8. The method for making a natural plant tea beverage according to claim 2, characterized in that: In S7, the specific process of canning and packaging is as follows: (1) Sampling and testing the sterilized extract in S6, including microbial testing and chemical index testing, to ensure the sterilization effect; (2) introducing the sterilized extract from the inlet end of the filling equipment, and then filling the sterilized extract into the corresponding glass container or fresh-keeping food grade can container through the filling equipment; (3) Then, the capping bottle or can lid containing the sterilized extract is tightly combined with the glass container or fresh-keeping food grade can container by a sealing machine through mechanical pressure to form a seal.

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