Polygonatum polysaccharide seven-sweet-leaf secondary tea and preparation method thereof

Abstract

The invention discloses rhizoma polygonati polysaccharide seven-sweet-leaf secondary tea and a preparation method thereof. The rhizoma polygonati polysaccharide seven-sweet-leaf secondary tea is prepared from the following raw materials in percentage by mass: 10-20% of rhizoma polygonati polysaccharide; 5-15% of kudzuvine root polysaccharide; 5-10% of edible mushroom polysaccharide; 8-15% of chitosan oligosaccharide; and 50-72% of seven-sweet eucommia ulmoides compound fermented tea powder. The preparation method comprises the following steps: fully mixing the seven-sweet eucommia ulmoides compound fermented tea powder with a corresponding amount of polygonatum sibiricum polysaccharide, kudzuvine root polysaccharide and edible fungus polysaccharide, adding a corresponding amount of chitosan oligosaccharide after uniformly mixing, quickly and uniformly mixing to obtain a mixture, and subpackaging and sealing to obtain the eucommia ulmoides compound fermented tea powder. According to the invention, plant polysaccharides with an immune regulation effect, such as polygonatum polysaccharide, radix puerariae polysaccharide and edible fungus polysaccharide, are matched with chitosan oligosaccharide which is easy to absorb and can promote metabolism, so that the effects of rapidly relieving fatigue and enhancing the immunity of a human body can be achieved; and the purposes of well enhancing human body functions, improving metabolism, enhancing essence and qi and the like can be achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of traditional Chinese medicine, molecular biology and life science, and relates to a health tea capable of improving symptoms such as qi deficiency, easy fatigue, soreness of waist and knees, weakness of muscles and bones, and bone injury, and in particular to a polygonatum polysaccharide seven sweet leaf semi-fermented tea and a preparation method thereof. BACKGROUND

[0002] Sub-health young and middle-aged people and some elderly patients often have one or more of the symptoms such as qi deficiency, easy fatigue, soreness of waist and knees, weakness of muscles and bones, and bone injury. The young and middle-aged people will cause biological clock disorder and immune regulation failure due to long-term staying up late and day-night reversal, and finally lead to physical weakness and easy fatigue. In addition, high work intensity and great mental pressure will also lead to premature decline of body function, abnormal metabolism and hormone level bending, and further cause the above symptoms.

[0003] Traditional Chinese medicine treatment has the advantages of small side effects, strong individualization, and emphasis on prevention, by the concept of holism and syndrome differentiation and treatment, with the core of balancing body function and improving constitution. It not only can relieve symptoms, but also can help restore the stability of the internal environment of the human body by regulating qi and blood and visceral function, and is suitable for long-term sub-health or elderly patients with chronic diseases. According to modern scientific analysis and identification, tea contains a variety of chemical components beneficial to the human body, such as chlorophyll, vitamins, lipids, caffeine, tea polyphenols, lipopolysaccharides, proteins and amino acids, carbohydrates, and minerals, which have good nutritional value and pharmacological effects on the human body. Tea has both natural health care and medical functions. However, the tea prepared by the traditional method using the leaves of a certain or several tea trees as raw materials is difficult to have a very good improvement effect on people who have symptoms such as qi deficiency, easy fatigue, weakness of muscles and bones, etc. Therefore, it is necessary to add some plant and animal polysaccharide extracts to accelerate and enhance absorption, so as to effectively enhance human function, improve metabolism, and enhance essence. SUMMARY

[0004] The present application provides a polygonatum polysaccharide seven sweet leaf semi-fermented tea and a preparation method thereof, aiming to overcome the deficiency of the existing conventional tea varieties that the constitution enhancement and symptom improvement effect on people with symptoms such as qi deficiency, easy fatigue, weakness of muscles and bones, etc. is not significant or slow.

[0005] The technical solution of the present application to solve the above technical problems is as follows: a polygonatum polysaccharide seven sweet leaf semi-fermented tea, which is composed of the following raw materials in mass percentage: polygonatum polysaccharide 10-20%; pueraria polysaccharide 5-15%; edible mushroom polysaccharide 5-10%; chitosan oligosaccharide 8-15%; seven sweet eucommia compound fermented tea powder 50-72%.

[0006] The pharmacological effects and reasonableity of the components of the polygonatum polysaccharide seven sweet leaf semi-fermented tea provided by the present application are briefly described as follows:

[0007] Huangjing is a traditional Chinese medicine with the effects of tonifying qi and yin, invigorating the spleen and lung, and nourishing the kidney and essence. It is often used to improve deficiency and weakness, lack of essence and blood, and weakness of the spleen and stomach. Modern research has confirmed its antioxidant, immune regulation, and hypoglycemic effects, but it needs to be used reasonably. Huangjing has excellent qi tonifying effect, effectively improving fatigue, loss of appetite, and symptoms such as soreness of the waist and knees, and early graying of hair caused by spleen deficiency and kidney essence deficiency. Huangjing polysaccharide is an active ingredient extracted from Huangjing. Studies have shown that it has significant immune regulation ability, and can enhance the body's immune function by activating macrophages and promoting lymphocyte proliferation.

[0008] Gegen is a cool and refreshing herb that has the effects of clearing heat, generating saliva, and stopping thirst. Pharmacological studies have shown that it has antioxidant stress response, reduces inflammation factor accumulation, enhances insulin sensitivity, and reduces insulin resistance. It is often used to treat external heat headache, strong pain in the neck and back, thirst, diabetes, measles, dysentery, dizziness, stroke, and chest pain. The first record of Gegen in existing literature is in Shennong's Herbal Classic, which states that it is used to treat "all arthralgia". Due to physical weakness, external invasion and retention of pathogenic factors, the meridians are blocked, and the blood circulation is not smooth, resulting in "arthralgia" caused by joint and muscle deficiency. Current research in the field of traditional Chinese medicine shows that Gegen has a good auxiliary effect on relieving chronic fatigue, and Gegen polysaccharide has been confirmed to have immune regulation effect, which can improve the body's resistance to disease, and effectively resist the feeling of fatigue.

[0009] Edible mushroom polysaccharide is known as "biological response regulator" in the international community. Studies have shown that it has the significant characteristics of biological response regulator, and can be used as an immune regulation enhancer and immune activator. Edible mushroom polysaccharide can activate immune cells such as macrophages and T lymphocytes, promote cytokine secretion, and enhance the body's immunity to a certain extent. It can also effectively remove free radicals in the body and inhibit lipid peroxidation, which has a certain auxiliary effect on delaying cell aging.

[0010] Chitosan oligosaccharide is a product of chitosan depolymerization, which is an upgraded product of chitin and chitosan. It has unparalleled advantages over chitosan. Chitosan oligosaccharide is prepared by advanced biological enzymatic method, which has the advantages of low molecular weight, good water solubility, large functional effect, easy absorption by the human body, and high biological activity. Chitosan oligosaccharide is the only positively charged cationic alkaline amino oligosaccharide in nature, which is an animal cellulose. Chitosan oligosaccharide is a small molecule oligosaccharide with amino groups derived from chitosan from shrimp and crab shells. Chitosan oligosaccharide is a polysaccharide composed of N-ethyl-D-glucosamine with β-1, 4 glycosidic bond, which cannot be degraded by mammalian gastric acid and digestive enzymes, but can be directly absorbed by intestinal epithelial cells, with a human absorption rate of more than 99%. Although it cannot be decomposed into energy substances such as glucose or fat, it can help relieve fatigue by promoting energy metabolism and enhancing the intensity and stability of the brain cortex excitation process.

[0011] Raspberry was listed in the "List of Food and Drug" in 2002 and became a medicine-food homologous traditional Chinese medicine. The medicinal ingredients of raspberry fruit, which is the immature fruit harvested in early summer and dried by high-temperature cooking, have good effects on optimizing liver, reducing blood lipids, reducing blood sugar, antioxidant, anti-AD (Alzheimer's disease) and the like. Raspberry leaf is usually considered to have the effect of improving eyesight, and is used to treat eyelid redness, red and painful eyes, green blindness, toothache and the like. It is recorded in "Compendium of Materia Medica" that it can "improve eyesight and stop tears, and absorb dampness". In fact, raspberry leaf also has the effects of relieving fatigue, improving sleep, promoting digestion, enhancing immunity and antioxidant. In addition, the sugar content of seven-leaf raspberry leaf is higher than that of five-leaf raspberry leaf.

[0012] When used as a traditional Chinese medicine, the dried bark of Eucommia ulmoides is usually selected, which is a Chinese special medicinal material and is listed as a superior product in "Shennong's Herbal Classic". Eucommia ulmoides tastes sweet and is warm, and is related to the liver and kidney channels, contains lignans, iridoid glycosides and various amino acids and trace elements, has the effects of tonifying liver and kidney, strengthening bones and muscles and preventing miscarriage, and is used to treat lumbago and knees pain, fetal movement instability, high blood pressure and the like. The broken section of Eucommia ulmoides can be seen as silver rubber filaments. The effects of Eucommia ulmoides leaf are similar to those of Eucommia ulmoides bark, but Eucommia ulmoides leaf is usually processed into medicinal decoction pieces or tea for use. When Eucommia ulmoides leaf is used as tea, it is usually fermented into Fu brick tea to increase tea aroma and improve taste due to the bitter taste. However, Eucommia ulmoides leaf contains a large amount of chlorogenic acid, which causes difficulty in fermentation and slow growth of Eurotium cristatum.

[0013] The plant polysaccharides with immunomodulatory effects such as the polysaccharides of rhizoma polygonati, the polysaccharides of pueraria and the polysaccharides of edible fungi are combined with the animal cellulose chitosan which is easy to absorb and can promote metabolism, so that the effects of relieving fatigue and enhancing immunity of human body can be achieved. In addition, the long-acting immunomodulatory and anti-fatigue effects of the seven sweet Eucommia ulmoides compound fermented tea powder can enhance the function of human body, improve metabolism and improve essence and the like. The seven sweet leaves and Eucommia ulmoides leaves in the seven sweet Eucommia ulmoides compound fermented tea powder are rapidly and deeply fermented to form flowers, so that the substances such as tea polyphenols and caffeine in the leaves which affect the taste and are not good for health for long-term drinking are greatly reduced, the aroma and the taste of the tea are increased, and a variety of bioactive components are produced after the tea polyphenols and the like are absorbed by Eurotium cristatum when the flowers are formed, so that the effects of eliminating free radicals, relieving fatigue and delaying aging are achieved.

[0014] On the basis of the above technical solutions, the application can further be specifically selected as follows.

[0015] Specifically, the seven sweet Eucommia compound fermented tea powder is prepared by the following method: taking fresh leaves of seven-leaf raspberry and fresh leaves of Eucommia as raw materials, the raw materials are processed into rough tea through the processes of fixation, initial kneading, drying, fermentation and cutting, hydrogen peroxide solution is uniformly sprayed on the Eucommia rough tea, after drying again, the obtained seven-leaf raspberry rough tea and Eucommia rough tea are mixed in proportion, then steaming spray flow, spread and cool to room temperature, then the spreaded rough tea is uniformly sprayed with active bacteria liquid of Eurotium cristatum or spore powder of Eurotium cristatum, mixed evenly, then pressed into tea bricks, then the fermentation temperature is controlled, fermented for 5-10 days, after fermentation, the temperature is raised to 50-55℃, dried to less than 8% of the moisture content of the tea bricks, and finally taken out and crushed, to obtain the seven sweet Eucommia compound fermented tea powder. The sugar content of seven-leaf raspberry is relatively high and the content of chlorogenic acid is low, and the appropriate amount of seven-leaf raspberry rough tea and Eucommia leaf rough tea can ensure that the spores of Eurotium cristatum can survive and reproduce quickly on the rough tea.

[0016] Preferably, the seven-leaf raspberry rough tea and the Eucommia rough tea are mixed in a weight ratio of 1:4-5; the concentration of the hydrogen peroxide solution is 5-8wt%, and the dosage ratio of the hydrogen peroxide solution to the Eucommia rough tea is 3-6mL:100g. The hydrogen peroxide solution is uniformly sprayed on the Eucommia rough tea in the form of water mist, and the Eucommia rough tea can be appropriately turned over to make the surface of the rough tea uniformly contact with the hydrogen peroxide. The hydrogen peroxide can oxidize a certain amount of chlorogenic acid on the surface of the Eucommia rough tea, thereby reducing the difficulty of fermentation and flower formation of the Eucommia rough tea. The subsequent steaming spray flow can further decompose the chlorogenic acid and reduce its inhibitory effect on fermentation and flower formation.

[0017] Specifically, the active bacteria liquid of Eurotium cristatum is obtained by taking the gold flower picked from the flowered Fu brick tea as the strain, culturing and purifying, and then dispersing in distilled water.

[0018] Specifically, the concentration of spores in the active bacteria liquid of Eurotium cristatum is (1-5)×10 8 / mL.

[0019] Specifically, the fermentation temperature is controlled, and the fermentation is carried out for 5-10 days, which is divided into two stages: the first stage is controlled at a temperature of 25-30℃ for 2-3 days, and the second stage is controlled at a temperature of 30-40℃ for 3-7 days.

[0020] Specifically, the particle size of the seven sweet Eucommia compound fermented tea powder is 300-500 meshes.

[0021] Specifically, the steaming spray flow refers to placing tea leaves in a steam chamber, and then making superheated steam at 100-110℃ continuously pass through the steam chamber from bottom to top.

[0022] The application further provides a method for preparing the rhizoma polygonati polysaccharide seven sweet leaf sub-fermented tea, which comprises the following steps: firstly, mixing the seven sweet eucommia compound fermented tea powder with corresponding mass percentages of rhizoma polygonati polysaccharide, pueraria polysaccharide and edible mushroom polysaccharide, then adding corresponding mass percentages of chitosan oligosaccharide, mixing quickly to obtain a mixture, and finally, packaging and sealing to obtain the rhizoma polygonati polysaccharide seven sweet leaf sub-fermented tea.

[0023] Specifically, the mixture is first filled into a filter paper bag and sealed, and then sealed and packaged in a plastic sealing bag. DETAILED DESCRIPTION

[0024] The technical solutions provided by the application will be clearly and completely described below with reference to specific examples. Obviously, the described examples are only some of the embodiments of the application, rather than all the embodiments. Based on the examples in the application, all other examples obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0025] For the sake of brevity, the seven sweet eucommia compound fermented tea powder used in the following examples is prepared by the following method:

[0026] Fresh leaves of seven-leaf raspberry and fresh leaves of eucommia are used as raw materials to process into rough tea through the processes of fixation, initial kneading, drying, fermentation and cutting. Hydrogen peroxide solution (5wt%) is uniformly sprayed on the eucommia rough tea, and the dosage ratio of hydrogen peroxide solution to eucommia rough tea is 5mL:100g. After drying again (water content is less than 15%), the obtained seven-leaf raspberry rough tea and eucommia rough tea are mixed in proportion (the seven-leaf raspberry rough tea and eucommia rough tea are mixed in a weight ratio of 1:4.5). The concentration of the hydrogen peroxide solution is 5-8wt%, and then steam jet is sprayed. After being spread and cooled to room temperature, the active bacteria liquid of Eurotium cristatum is uniformly sprayed on the spreaded rough tea. After mixing, the tea bricks are pressed, and then the fermentation temperature is controlled. The fermentation is carried out for 5-10 days, which is divided into two stages. In the first stage, the temperature is controlled at 28℃ for 3 days. In the second stage, the temperature is controlled at 35℃ for 7 days. After the fermentation is completed, the temperature is raised to 52℃, and the tea bricks are dried until the water content is less than 8%. Finally, the tea bricks are taken out and crushed. The particle size of the crushed powder is 300-500 meshes, and the seven sweet eucommia compound fermented tea powder is obtained.

[0027] The active bacteria liquid of Eurotium cristatum is obtained by taking the golden flower on the flower-picked zhuang tea as the strain, culturing and purifying, and then dispersing into distilled water. The spore concentration in the active bacteria liquid of Eurotium cristatum is preferably (1-5)×10 8 The steam jet refers to placing the tea leaves in a steam chamber, and then making the superheated steam at 100-110℃ continuously pass through the steam chamber from bottom to top.

[0028] Example 1

[0029] A preparation method of a Huangjing polysaccharide Qitian leaf secondary tea, comprising the following contents: first, 60 parts by weight of Qitian eucommia complex fermented tea powder is mixed with 15 parts by weight of Huangjing polysaccharide, 10 parts by weight of Gegen polysaccharide and 7 parts by weight of edible mushroom polysaccharide, and then 8 parts by weight of chitosan oligosaccharide is added, and the mixture is uniformly mixed to obtain a mixed material, which is then packaged and sealed. When packaging, the mixed material is first placed in a filter paper bag and sealed, and then sealed in a plastic sealing bag.

[0030] The above-mentioned Huangjing polysaccharide Qitian leaf secondary tea is composed of the following raw materials in the following mass percentages: Huangjing polysaccharide 15%; Gegen polysaccharide 10%; edible mushroom polysaccharide 7%; chitosan oligosaccharide 8%; Qitian eucommia complex fermented tea powder 60%.

[0031] Example 2

[0032] A preparation method of a Huangjing polysaccharide Qitian leaf secondary tea, comprising the following contents: first, 55 parts by weight of Qitian eucommia complex fermented tea powder is mixed with 10 parts by weight of Huangjing polysaccharide, 15 parts by weight of Gegen polysaccharide and 5 parts by weight of edible mushroom polysaccharide, and then 15 parts by weight of chitosan oligosaccharide is added, and the mixture is uniformly mixed to obtain a mixed material, which is then packaged and sealed. When packaging, the mixed material is first placed in a filter paper bag and sealed, and then sealed in a plastic sealing bag.

[0033] The above-mentioned Huangjing polysaccharide Qitian leaf secondary tea is composed of the following raw materials in the following mass percentages: Huangjing polysaccharide 10%; Gegen polysaccharide 15%; edible mushroom polysaccharide 5%; chitosan oligosaccharide 15%; Qitian eucommia complex fermented tea powder 55%.

[0034] Example 3

[0035] A preparation method of a Huangjing polysaccharide Qitian leaf secondary tea, comprising the following contents: first, 62 parts by weight of Qitian eucommia complex fermented tea powder is mixed with 20 parts by weight of Huangjing polysaccharide, 5 parts by weight of Gegen polysaccharide and 5 parts by weight of edible mushroom polysaccharide, and then 8 parts by weight of chitosan oligosaccharide is added, and the mixture is uniformly mixed to obtain a mixed material, which is then packaged and sealed. When packaging, the mixed material is first placed in a filter paper bag and sealed, and then sealed in a plastic sealing bag.

[0036] The above-mentioned Huangjing polysaccharide Qitian leaf secondary tea is composed of the following raw materials in the following mass percentages: Huangjing polysaccharide 20%; Gegen polysaccharide 5%; edible mushroom polysaccharide 5%; chitosan oligosaccharide 8%; Qitian eucommia complex fermented tea powder 62%.

[0037] Example 4

[0038] A method for preparing a seven-sweet Eucommia ulmoides polysaccharide tea includes the following steps: First, 72 parts by weight of seven-sweet Eucommia ulmoides compound fermented tea powder are thoroughly mixed with 10 parts by weight of Polygonatum sibiricum polysaccharide, 5 parts by weight of Pueraria lobata polysaccharide, and 5 parts by weight of edible fungi polysaccharide. After mixing evenly, 8 parts by weight of chitosan oligosaccharide are added and quickly mixed to obtain a mixture. The mixture is then packaged and sealed. For packaging, the mixture is first placed into filter paper bags and sealed, and then sealed in plastic sealing bags.

[0039] The above-mentioned Polygonatum polysaccharide seven-sweet Eucommia tea is composed of the following raw materials in the following weight percentages: Polygonatum polysaccharide 10%; Pueraria lobata polysaccharide 5%; edible fungus polysaccharide 5%; chitosan oligosaccharide 8%; and seven-sweet Eucommia ulmoides compound fermented tea powder 72%.

[0040] Example 5

[0041] A method for preparing a seven-sweet Eucommia ulmoides polysaccharide tea includes the following steps: First, 50 parts by weight of seven-sweet Eucommia ulmoides compound fermented tea powder are thoroughly mixed with 17 parts by weight of Polygonatum sibiricum polysaccharide, 8 parts by weight of Pueraria lobata polysaccharide, and 10 parts by weight of edible fungi polysaccharide. After mixing evenly, 15 parts by weight of chitosan oligosaccharide are added and quickly mixed to obtain a mixture. The mixture is then packaged and sealed. For packaging, the mixture is first placed into filter paper bags and sealed, and then sealed in plastic sealing bags.

[0042] The above-mentioned Polygonatum polysaccharide seven-sweet Eucommia tea is composed of the following raw materials in the following weight percentages: Polygonatum polysaccharide 17%; Pueraria lobata polysaccharide 8%; edible fungus polysaccharide 10%; chitosan oligosaccharide 15%; and seven-sweet Eucommia ulmoides compound fermented tea powder 50%.

[0043] The Polygonatum polysaccharide and seven-sweet leaf tea obtained in the above embodiments were brewed and consumed. When brewing, the outer plastic sealing bag was removed, the entire filter paper bag was placed in the teacup, and then hot water at 85-100℃ was poured in. After steeping for 1-3 minutes, the filter paper bag was removed. The resulting tea soup was bright reddish-yellow, with a mellow taste, a balanced sweetness, and a rich aroma. It can be brewed three to four times. Follow-up visits were conducted with individuals who had consumed this tea for more than six months (with any of the following symptoms: fatigue, lower back and knee pain, muscle weakness, or bone injury). They consumed at least one bag and a maximum of three bags daily. Each bag contained 5g of Polygonatum polysaccharide and seven-sweet leaf tea powder. The results showed that this tea significantly improved fatigue, lower back and knee pain, muscle weakness, and bone injury, and no significant discomfort was observed with long-term consumption. It is also suitable for patients with hypertension, as it has a blood pressure-lowering effect.

[0044] The above description is only a preferred embodiment of the present invention and is 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 within the protection scope of the present invention.

Claims

1. A Polygonatum polysaccharide seven-sweet leaf tea, characterized in that, It is composed of the following raw materials in the indicated weight percentages: Polygonatum polysaccharide 10-20%; Pueraria lobata polysaccharide 5-15%; Edible fungus polysaccharide 5-10%; Chitosan oligosaccharide 8-15%; and Seven-sweet Eucommia ulmoides compound fermented tea powder 50-72%.

2. The Polygonatum polysaccharide seven-sweet leaf tea according to claim 1, characterized in that, The Seven-Sweet Eucommia Compound Fermented Tea Powder is prepared by the following method: using fresh leaves of Raspberry and Eucommia as raw materials, the raw tea is processed into raw tea through the initial processing steps of fixing, initial rolling, drying, fermentation, and cutting. Hydrogen peroxide solution is evenly sprayed onto the Eucommia raw tea, and after drying again, the obtained Raspberry and Eucommia raw tea are thoroughly mixed in proportion, then steamed and sprayed, spread out and cooled to room temperature. Then, the spread-out raw tea is evenly sprayed with active liquid of Aspergillus cristatus or Aspergillus cristatus spore powder, mixed evenly, pressed into tea bricks, and then fermented at a controlled temperature for 5-10 days. After fermentation, the temperature is raised to 50-55℃ and dried until the moisture content of the tea brick is below 8%. Finally, it is taken out and crushed to obtain the Seven-Sweet Eucommia Compound Fermented Tea Powder.

3. The Polygonatum polysaccharide seven-sweet leaf tea according to claim 2, characterized in that, The seven-leaf raspberry tea and eucommia tea are mixed at a weight ratio of 1:4-5; the concentration of hydrogen peroxide solution is 5-8wt%, and the ratio of hydrogen peroxide solution to eucommia tea is 3-6mL:100g.

4. The Polygonatum polysaccharide seven-sweet leaf tea and its preparation method according to claim 2, characterized in that, The active bacterial solution of *Eurotium cristatum* is obtained by culturing and purifying the golden flowers picked from Fu brick tea that has already developed flowers, and then dispersing them into distilled water.

5. The Polygonatum polysaccharide seven-sweet leaf tea according to claim 4, characterized in that, The spore concentration in the active bacterial solution of *Eurotium cristatum* was (1-5)×10⁻⁶. 8 per mL.

6. The Polygonatum polysaccharide seven-sweet leaf tea according to claim 2, characterized in that, Control the fermentation temperature and ferment for 5-10 days, divided into two stages: the first stage controls the temperature at 25-30℃ and ferments for 2-3 days; the second stage controls the temperature at 30-40℃ and ferments for 3-7 days.

7. The Polygonatum polysaccharide seven-sweet leaf tea according to claim 1, characterized in that, The particle size of the seven-sweet Eucommia ulmoides compound fermented tea powder is 300-500 mesh.

8. A Polygonatum polysaccharide-seven-sweet leaf tea according to any one of claims 2 to 7, characterized in that, The steam jet refers to placing tea leaves in a steam chamber and then continuously passing superheated steam at 100-110°C from bottom to top through the steam chamber.

9. A method for preparing Polygonatum polysaccharide-containing herbal tea as described in any one of claims 1 to 7, characterized in that, The process includes the following steps: First, thoroughly mix the seven-sweet Eucommia ulmoides compound fermented tea powder with the corresponding mass percentages of Polygonatum polysaccharide, Pueraria lobata polysaccharide, and edible fungus polysaccharide. After mixing, add the corresponding mass percentages of chitosan oligosaccharide, mix quickly to obtain the mixture, and then package and seal it to obtain the final product.

10. The method for preparing the Polygonatum polysaccharide-seven-sweet leaf tea according to claim 9, characterized in that, During packaging, the mixture is first placed into filter paper bags and sealed, and then sealed in plastic sealing bags.