Blueberry anthocyanin nutritional food tablet composition for improving exercise endurance and anti-fatigue

Abstract

The application discloses a blueberry anthocyanin nutritional food tablet composition for improving exercise endurance and anti-fatigue capability, which is prepared by compounding blueberry anthocyanin solid powder, ginseng powder, theanine from tea leaves, rice bran fatty alkyl alcohol and food-grade auxiliary materials according to a set weight fraction range. The composition can provide comprehensive nutritional supplementation in terms of antioxidant support, energy metabolism regulation and central relaxation through the synergistic compounding of various nutritional ingredients. The combination of blueberry anthocyanin and rice bran fatty alkyl alcohol has an auxiliary improvement effect on oxidative stress under the exercise state; the compounding of ginseng powder and theanine is helpful to maintaining energy supply and nervous system balance. The formula composition of the application is simple, the process adopts direct tablet compression molding, the raw material sources are safe and reliable, and the application is suitable for the large-scale production and application of nutritional supplement food for daily exercise groups.

Description

Technical Field

[0001] This invention relates to the fields of nutrition, functional foods and dietary supplements. Specifically, it relates to a nutritional food tablet composition, preparation process and application thereof, which uses blueberry anthocyanins as the core active ingredient and is scientifically formulated with natural active substances such as ginseng, theanine and rice bran fatty alkyl alcohols within a specific range. The aim is to support the body's energy metabolism pathways in multiple dimensions, enhance the effectiveness of the antioxidant defense system, and relieve central nervous system stress, thereby safely and effectively improving the athletic performance of healthy individuals and accelerating fatigue recovery. Background Technology

[0002] In today's fast-paced society, both the high-intensity training of professional athletes and the accumulated mental and physical strain of ordinary people working under long-term high pressure and living fast-paced lives can easily lead to physical fatigue. Exercise-induced and central fatigue is a complex systemic physiological process that involves not only energy depletion, lactic acid accumulation, and oxidative stress damage in peripheral muscles, but also is closely related to the stress state of the central nervous system and endocrine homeostasis imbalance. From a physiological perspective, fatigue is usually closely related to energy consumption, accumulation of metabolic waste (such as lactic acid and blood ammonia), oxidative stress damage, and endocrine homeostasis imbalance.

[0003] From the perspective of modern exercise physiology and molecular nutrition, the occurrence and development of fatigue involve multiple peripheral and central mechanisms: 1. Depletion of energy resources and accumulation of metabolic waste: Under high-intensity or prolonged load, the body's demand for adenosine triphosphate (ATP) increases dramatically, the proportion of anaerobic glycolysis rises, leading to a large accumulation of metabolic byproducts such as lactic acid and blood ammonia in the blood and muscle tissue. These acidic substances lower the pH of the microenvironment, interfere with the function of muscle contractile proteins, and trigger significant muscle soreness and weakness.

[0004] 2. Severe Oxidative Stress: High-oxygen-consuming physical activity causes electron leakage in the mitochondrial respiratory chain, generating a large amount of reactive oxygen species (ROS). When the rate of ROS generation exceeds the scavenging capacity of the body's endogenous antioxidant enzyme system (such as superoxide dismutase SOD and catalase CAT), severe oxidative stress is triggered. ROS attack polyunsaturated fatty acids on the cell membrane, causing lipid peroxidation and generating toxic metabolites such as malondialdehyde (MDA), directly damaging the structural integrity and normal permeability of the cell membrane.

[0005] 3. Neuroendocrine system stress: Under high exercise load, the body may activate the hypothalamus-pituitary-adrenal (HPA) axis, leading to changes in the levels of stress-related hormones such as cortisol; long-term stress may have a certain impact on protein metabolism, thereby affecting the body's overall physiological state.

[0006] For a long time, the market and academia have explored various dietary supplements to support athletic performance and delay fatigue. However, traditional anti-fatigue supplements often have limitations. For example, some products based on central nervous system stimulants (such as high-dose caffeine) can temporarily mask fatigue, but they do not fundamentally restore the body's energy reserves; products that only supplement amino acids have too limited a target and cannot comprehensively address the complex fatigue caused by multiple factors such as metabolism, oxidation, and endocrine disorders.

[0007] In recent years, bioactive substances derived from natural plants have become a research hotspot in the field of nutrition. "Lanmei No. 1" blueberry, a national superior forest tree variety with independent intellectual property rights in my country, is a preferred source of raw materials, rich in anthocyanins, a class of potent natural water-soluble antioxidants. However, fatigue is a physiological phenomenon involving multiple pathways, and relying solely on the antioxidant effect of anthocyanins is insufficient. Existing commercially available products lack nutritional intervention programs that systematically address the entire fatigue pathway (cellular oxidation-energy metabolism-central nervous system).

[0008] Therefore, developing a nutritional composition with a scientifically formulated composition that can synergistically support anti-fatigue capabilities through multiple physiological pathways within a reasonable concentration range is of great significance for helping healthy individuals improve their exercise performance and physical function. Summary of the Invention

[0009] To address the shortcomings of existing anti-fatigue and sports nutrition supplements that target only one specific area, this invention provides a blueberry anthocyanin nutritional tablet composition for enhancing exercise endurance and anti-fatigue capabilities. Based on molecular nutrition and exercise physiology mechanisms, this invention innovatively combines blueberry anthocyanins with ginsenosides, L-theanine, and rice bran fatty alkyl alcohols to construct a three-dimensional nutritional support system comprising an "antioxidant barrier + energy generator + neural homeostasis regulator."

[0010] The blueberry anthocyanin nutritional tablet composition for improving exercise endurance and anti-fatigue ability provided by the present invention is composed of blueberry anthocyanin solid powder, ginseng powder, tea theanine, rice bran fatty alkyl alcohol, sweetener, binder and release agent.

[0011] As a preferred embodiment, the composition of each component by weight is as follows: 150–250 parts blueberry anthocyanin solid powder, 30–80 parts ginseng powder, 30–80 parts tea theanine, and 10–50 parts rice bran fatty alkyl alcohols.

[0012] Furthermore, the composition of each component by weight is as follows: 180-220 parts blueberry anthocyanin solid powder, 40-60 parts ginseng powder, 40-60 parts tea theanine, and 20-40 parts rice bran fatty alkyl alcohols.

[0013] Preferably, the sweetener is mogroside, in the form of 1-10 parts by weight; the binder is microcrystalline cellulose, in the form of 2-15 parts by weight; and the release agent is magnesium stearate, in the form of 1-5 parts by weight.

[0014] Preferably, the ginseng powder contains 3%–5% ginsenosides by mass; and the tea theanine contains 20% L-theanine by mass.

[0015] Preferably, the blueberry anthocyanins in the blueberry anthocyanin solid powder are extracted from the "Lanmei No. 1" blueberry fruit.

[0016] To overcome the technical bottlenecks of poor stability and low bioavailability of anthocyanin polyphenols in the digestive tract, the preferred embodiment of this invention specifically optimizes the preparation process of blueberry anthocyanin solid powder. The blueberry anthocyanin solid powder is produced by the following preparation method: 1) Raw material pretreatment: Select mature "Lanmei No. 1" blueberries, wash and grade them, and then freeze them at low temperature for preservation; 2) Thawing and crushing: A segmented thawing method is adopted to ensure that the fruit tissue is thawed evenly before crushing. 3) Enzymatic extraction: Under controlled temperature and pH conditions, a compound enzyme preparation is added for enzymatic hydrolysis to promote anthocyanin release; 4) Solid-liquid separation: Filter or centrifuge the enzymatic hydrolysate to remove fruit residue and obtain an extract containing anthocyanins; 5) Purification and enrichment: Selective adsorption and elution of the extract using adsorption materials to improve the purity of anthocyanins; 6) Concentration and drying: The eluent is concentrated at low temperature and then spray-dried to obtain blueberry anthocyanin powder; 7) Protein dispersion: Food-grade protein raw materials are added to purified water and dispersed thoroughly under stirring conditions to form a uniform protein aqueous dispersion system. 8) Adding blueberry anthocyanins: Under the condition of controlling the temperature not to exceed 50℃, slowly add blueberry anthocyanins to the protein aqueous dispersion system and stir continuously to ensure that the anthocyanins and protein molecules are fully in contact. 9) Complex reaction: By adjusting the pH value of the system to a weakly acidic or neutral range and maintaining it for a certain period of time, anthocyanin molecules form a stable complex structure with protein molecules through hydrogen bonding, hydrophobic interaction and electrostatic interaction, thus obtaining blueberry anthocyanin casein solution. 10) Curing, freeze-drying, and pulverizing: The composite dispersion system is subjected to low-temperature treatment and pre-freezing, followed by freeze-drying under vacuum conditions. The material is handled gently during unloading, and the unloading time is controlled within 2 hours. The freeze-dried material is pulverized by a knife mesh and passed through a 40-mesh vibrating screen to obtain blueberry anthocyanin-casein freeze-dried powder.

[0017] The innovation of this invention lies in the synergistic construction of the finished product formulation, which completely solves the problem that a single ingredient cannot combat systemic fatigue. The preparation method of the above-mentioned blueberry anthocyanin nutritional tablet composition provided by this invention employs a direct compression process and includes the following steps: Step 1: Accurately weigh the blueberry anthocyanin solid powder, ginseng powder, tea theanine, rice bran fatty alkyl alcohol, monk fruit glycosides and microcrystalline cellulose according to the specified weight proportions and put them into a three-dimensional mixer for thorough mixing; Step 2: Pass the above mixture through an 80-100 mesh sieve to granulate it, making the powder uniform; Step 3: Add the specified amount of magnesium stearate to the granulated powder and mix for 3-5 minutes for lubrication. Step 4: Feed the mixed materials into a tablet press for direct tableting; Step 5: The pressed food slices are inspected by a metal detector, sterilized, and then packaged inside and out to obtain the finished product.

[0018] The present invention also provides the application of the above-mentioned blueberry anthocyanin nutritional tablet composition in the preparation of food products that support anti-fatigue nutritional supplementation.

[0019] Preferably, the composition is taken orally by human body, and the recommended daily intake of blueberry anthocyanins for adults is 400–600 mg.

[0020] Analysis of component composition and mechanism of action: The composition of this invention is not a simple physical mixture of the components; there is a significant physiological synergistic effect between the various natural ingredients: 1. Blueberry anthocyanin solid powder: As an extremely effective natural free radical scavenger, the abundant phenolic hydroxyl groups in its molecular structure can directly quench the large number of superoxide anions and hydroxyl free radicals generated by exercise or high-pressure work, cut off the lipid peroxidation chain reaction, protect the cell membrane structure, and greatly reduce micro-tissue damage caused by fatigue.

[0021] 2. Ginseng Powder: This formula is made from carefully selected ginseng extract containing 3%-5% ginsenosides. As a traditional "adaptogen" plant, ginseng's active ingredient, ginsenosides, can support the synthesis of adenosine triphosphate (ATP), optimize glucose and lipid metabolism pathways, and improve the body's oxygen utilization rate; at the same time, it helps regulate the hypothalamus-pituitary-adrenal (HPA) axis, suppress excessive cortisol secretion under high load, and support physiological functions.

[0022] 3. Tea Theanine: Contains an extract of 20% L-theanine. L-theanine can cross the blood-brain barrier, promoting the generation of alpha brain waves in the brain, thus having a "soothing and clear-headed" effect. After strenuous exercise or high-intensity mental exertion, theanine can work synergistically with ginseng to effectively reduce excessive excitation and anxiety of the central nervous system, alleviate mental fatigue, and shorten the overall recovery period.

[0023] 4. Rice bran fatty alkyl alcohols: These are long-chain fatty alcohols extracted from rice bran. They have unique nutritional effects in supporting lipid metabolism and reducing blood viscosity. In endurance exercise, rice bran fatty alkyl alcohols help optimize the ratio of fatty acid oxidation for energy, conserve muscle glycogen consumption, and thus significantly improve the body's aerobic endurance limit.

[0024] 5. Scientific excipient system: Pure natural zero-calorie mogrosides are used as sweeteners to avoid the metabolic burden caused by extra sugars; microcrystalline cellulose and magnesium stearate are added to not only give the powder excellent compressibility and flowability, but also to ensure the disintegration and slow release of active ingredients in the digestive tract.

[0025] The beneficial effects of this invention are: 1. Multi-target synergistic effect to relieve fatigue: The composition of the present invention successfully integrates peripheral antioxidant protection (anthocyanins), energy generation (ginseng, fatty alkanols) and central nervous system soothing regulation (theanine) into one, significantly reducing the body's fatigue under the dual pressure of physical and psychological stress.

[0026] 2. Optimize energy metabolism and reduce waste accumulation: It helps optimize the glycolysis process during exercise load, accelerates the clearance of metabolic byproducts such as lactic acid and blood ammonia, and reduces the breakdown of the body's own protein.

[0027] 3. Simplified process and stable quality: The scientific dry direct compression formulation system is adopted, which avoids the damage to heat-sensitive substances such as anthocyanins and theanine during wet granulation or high-temperature preparation, thus ensuring the ultra-high activity and long-term storage stability of the final product.

[0028] In summary, this invention overcomes the limitations of single antioxidant pathways, constructing a multi-target nutritional support system that "scavenges free radicals, optimizes energy metabolism, and soothes the central nervous system." Specifically, blueberry anthocyanins, in synergy with rice bran fatty alkyl alcohols, effectively reduce exercise-induced oxidative stress and optimize lipid metabolism; the combined application of ginseng powder and theanine helps support energy production and mitigate neuroendocrine stress under high-intensity conditions. Human trials show that after 30 days of continuous use of this composition, subjects exhibited improved metabolic indicators (such as lactic acid and urea nitrogen) and fatigue recovery indicators after two periods of high-intensity exercise, and the product is safe for consumption. This invention features a simplified and efficient formula, employs direct compression molding, and has a scientifically designed range for formula proportions, making it suitable for large-scale industrial production of daily anti-fatigue nutritional diets. Detailed Implementation

[0029] The technical solution of the present invention will be described below with reference to specific embodiments and detailed clinical trial data. It should be noted that the present invention sets scientific component ranges in the embodiments to adapt to the needs of different population groups and specific production batches. Example

[0030] This embodiment provides a range of highly active anti-fatigue food tablet formulations, and within this range, nutritional food tablets with a single tablet weight of approximately 500 mg are prepared.

[0031] 1. Preparation of the core active ingredient (blueberry anthocyanin solid powder): The blueberry anthocyanin solid powder is produced by the following preparation method: • 1) Raw material pretreatment: Select mature "Lanmei No. 1" blueberries, wash and grade them, and then freeze them at low temperature for preservation; • 2) Thawing and crushing: A segmented thawing method is adopted to ensure that the fruit tissue is thawed evenly before crushing. • 3) Enzymatic extraction: Under controlled temperature and pH conditions, a compound enzyme preparation is added for enzymatic hydrolysis to promote anthocyanin release; in step 3), the enzyme is a compound enzyme consisting of pectinase, cellulase and papain mixed in a mass ratio of 1:1:1, and added to blueberry pulp at a mass:volume ratio of 0.2-0.3%, with a hydrolysis pH of 3.0-5.0, a temperature of 45-55℃, and a time of 2-2.5h; • 4) Solid-liquid separation: Filter or centrifuge the enzymatic hydrolysate to remove fruit residue and obtain an extract containing anthocyanins; • 5) Purification and enrichment: The extract is selectively adsorbed and eluted using adsorption materials to improve the purity of anthocyanins; the diameter-to-height ratio of the adsorption resin column is 1:6-7, and the specific loading amount per gram of the adsorption resin is ≤20.6 mg / g; the adsorption resin packed in the adsorption resin column is a bifunctional adsorption resin with both hydroxyl and amide groups or a bifunctional adsorption resin with both ester and amide groups; concentration is performed using a single-effect three-stage scraper concentrator. • 6) Concentration and drying: The eluent is concentrated at low temperature and then spray-dried to obtain blueberry anthocyanin powder; • 7) Protein dispersion: Food-grade protein raw materials are added to purified water and dispersed thoroughly under stirring conditions to form a uniform protein aqueous dispersion system. • 8) Addition of blueberry anthocyanins: Under the condition of controlling the temperature not to exceed 50℃, slowly add blueberry anthocyanins to the protein aqueous dispersion system and stir continuously to ensure that the anthocyanins and protein molecules are fully in contact. • 9) Complex reaction: By adjusting the pH of the system to a weakly acidic or neutral range and maintaining it for a certain period of time, anthocyanin molecules form a stable complex structure with protein molecules through hydrogen bonds, hydrophobic interactions and electrostatic interactions, thus obtaining blueberry anthocyanin casein solution. • 10) Curing, freeze-drying, and pulverizing: The composite dispersion system is subjected to low-temperature treatment and pre-freezing, followed by freeze-drying under vacuum conditions. The material is handled gently during unloading, and the unloading time is controlled within 2 hours. The freeze-dried material is pulverized by a knife mesh and passed through a 40-mesh vibrating screen to obtain blueberry anthocyanin-casein freeze-dried powder.

[0032] Raw material ratio range for tablet composition (by weight): Weigh each grade of raw material precisely according to the following weight ranges. These ranges ensure synergistic efficacy while maintaining the physical formability of the tableting process: • Blueberry anthocyanin solid powder: 150-250 parts, preferably 180-220 parts • Ginseng powder (containing 3-5% ginsenosides): 30-80 parts, preferably 40-60 parts • Tea leaf theanine (containing 20% ​​L-theanine): 30-80 parts, preferably 40-60 parts • Rice bran fatty alkyl alcohols: 10-50 parts, preferably 20-40 parts • Monk fruit glycosides (sweetener): 1-10 parts • Microcrystalline cellulose (binder): 2-15 parts • Magnesium stearate (release agent / lubricant): 1-5 parts 3. Mixing and tableting process: • Add the blueberry anthocyanin solid powder, ginseng powder, tea theanine, rice bran fatty alkyl alcohol, monk fruit glycosides and microcrystalline cellulose within the formula range into a three-dimensional mixer and mix for 30 minutes in an environment where the temperature is controlled below 25 ℃ and the relative humidity is less than 45%.

[0033] • After mixing, the material is granulated through an 80-mesh sieve to prevent clumping and ensure uniform distribution of active ingredients.

[0034] • Add magnesium stearate within the selected range and continue mixing at low speed for 3 minutes to lubricate the surface.

[0035] • The final mixture is fed into a rotary tablet press, where pressure is controlled to directly compress the tablets into round or oval-shaped tablets.

[0036] 4. Packaging and Sterilization: After the tablets are inspected for foreign objects using a metal detector, they are packaged in aluminum-plastic blister packs and then sterilized by irradiation to obtain the finished product. The recommended daily intake for adults is 3 tablets (equivalent to 600mg of blueberry anthocyanins).

[0037] Experimental Example: Clinical Trial Study on the Improvement of Anti-fatigue Ability and Athletic Performance in Healthy Individuals by Nutritional Combinations To objectively verify the nutritional intervention effect and safety of the nutritional food tablet composition provided in the embodiments of the present invention, a nutritional trial and physiological indicator observation experiment were conducted on healthy individuals in conjunction with a third-party professional institution.

[0038] 1. Audience Screening 1.1 Study Subjects and Criteria: Healthy adults aged 25-49 years with good health, no significant heart, liver, lung, or kidney diseases, and no history of long-term medication were selected. A stratified randomization method was used to include 40 subjects. They were randomly assigned to a control group and a trial group: • Control group (20 cases): took placebo tablets without functional ingredients.

[0039] • Trial group (20 cases): Patients took the anti-fatigue food tablet composition prepared according to this invention (using the preferred formulation from the examples), with a daily dosage equivalent to 600 mg of blueberry anthocyanins and synergistic components. Their original dietary habits were not changed during the trial, and the medication was taken continuously for 30 calendar days.

[0040] 1.2 Exercise load test (cardiopulmonary exercise test CPET): Using the SCHILLER CS200 cardiopulmonary exercise testing device, subjects underwent standardized cardiopulmonary exercise tests before and after taking the medication. The test included four phases: resting, warm-up, incremental exercise with 10% increments until the termination criteria were reached, and recovery period, in order to comprehensively capture the physiological fluctuations of the body under extreme stress.

[0041] 2. Safety evaluation results After 30 days of continuous use, the participants in the trial group showed normal mental state and sleep patterns. Safety tests indicated that: • No abnormal changes were observed in weight, body mass index (BMI), or heart rate.

[0042] • Detailed blood biochemistry tests showed that routine blood indicators such as white blood cells, red blood cells, and hemoglobin, as well as liver function indicators such as alanine aminotransferase (ALT) and aspartate aminotransferase (AST), and kidney function indicators such as uric acid and creatinine, were all within the normal range, with no statistically significant differences compared to the control group. The results indicate that no significant adverse reactions were observed with this formula under the experimental conditions.

[0043] 3. Analysis of core serum biochemical indicators Venous blood samples were collected from subjects within 10 minutes after the second maximal exercise load for detailed serum biomarker detection. The data profoundly revealed the powerful multi-target synergistic efficacy of this composition: • Reduce the accumulation of metabolic waste and optimize energy pathways: A large accumulation of direct products of anaerobic glycolysis can cause muscle soreness. Tables 1 and 2 show that the difference in serum lactate increase after exercise in the experimental group was significantly lower than that in the control group by 0.51 mmol / L, and the difference in serum ammonia was lower than that in the control group by 1.04 μmol / L.

[0044] Table 1. Changes in serum lactate levels before and after exercise control group 5.05±1.22mmol / L 8.45±2.35 mmol / L 3.40±1.55 mmol / L Blueberry anthocyanin trial group 5.01±2.40mmol / L 7.89±2.55 mmol / L 2.89±1.63 mmol / L Table 2. Changes in serum ammonia levels before and after exercise control group 50.12±12.75µmol / L 57.96±12.18 µmol / L 7.84±4.7 µmol / L Blueberry anthocyanin trial group 49.69±14.3 µmol / L 57.99±14.43 µmol / L 6.80±3.64 µmol / L • Improves energy utilization and maintains protein homeostasis: Elevated serum urea nitrogen indicates that the body is breaking down its own protein for energy. Table 3 shows that the urea nitrogen difference in the experimental group after the second exercise was significantly lower than that in the control group by 1.85 mmol / L. These results demonstrate that blueberry anthocyanins can improve the utilization efficiency of carbohydrate / lipid energy substrates and reduce the breakdown and loss of the body's own protein.

[0045] Table 3. Changes in serum urea nitrogen levels before and after exercise control group 5.52±1.41mmol / L 11.97±3.10mmol / L 6.44±2.82 mmol / L Blueberry anthocyanin trial group 4.65±1.37mmol / L 9.23±2.18 mmol / L 4.59±2.11 mmol / L • Reduced muscle tissue micro-damage: According to Table 4, the myoglobin difference was significantly reduced by 10.36 ng / mL. This confirms the protective effect of blueberry anthocyanins on the physical structure of muscle fibers, which may help shorten the recovery period after high-intensity exercise.

[0046] Table 4. Changes in serum myoglobin levels before and after exercise control group 60.00±15.89ng / mL 108.14±21.04ng / mL 48.14±25.12ng / mL Blueberry anthocyanin trial group 60.01±18.38ng / mL 97.79±14.95 ng / mL 37.78±21.75 ng / mL • Alleviating endocrine stress response: According to Table 5, the difference in serum cortisol (stress hormone) levels in the experimental group was significantly lower than that in the control group by 7.94 ng / mL. This confirms that blueberry anthocyanins play a role in regulating central nervous system homeostasis, alleviating the high-energy stress state of the hypothalamus-pituitary axis, and accelerating the body's recovery from deep fatigue.

[0047] Table 5. Changes in serum cortisol levels before and after exercise control group 196.62±22.09ng / mL 292.44±60.80ng / mL 95.82±52.71ng / mL Blueberry anthocyanin trial group 177.81±19.44ng / mL 265.69±56.46ng / mL 87.88±49.10 ng / mL Conclusions and prospects for industrial application: Based on detailed data from human trials and observations of nutritional and physiological indicators, the blueberry anthocyanin nutritional tablet composition provided by this invention innovatively combines blueberry anthocyanins with ginseng, theanine, and rice bran fatty alkyl alcohols in a scientifically sound manner. This creates a three-dimensional, multi-dimensional anti-fatigue support mechanism at the nutritional level, which "optimizes energy metabolism, supports the antioxidant system's defense, maintains the physical state of muscle fibers, and relieves central and endocrine stress."

[0048] This formula can not only serve as a nutritional supplement for high-level professional athletes to enhance their athletic endurance, but it can also be widely applied to fatigue-prone professionals and manual laborers who face long-term mental and physical exertion. Through daily nutritional support, it can effectively help alleviate both mental and physical fatigue. The formulation scope of this invention not only improves the tolerance and adaptability for actual industrial production, but also provides a compliant, safe, and natural scientific basis for the extension of the blueberry deep processing industry chain and the development of functional foods in the health and wellness industry. It possesses extremely high industrial transformation value and broad socio-economic promotion prospects.

Claims

1. A blueberry anthocyanin nutritional tablet composition for enhancing exercise endurance and anti-fatigue ability, characterized in that, The composition consists of blueberry anthocyanin solid powder, ginseng powder, tea theanine, rice bran fatty alkyl alcohol, sweetener, binder and release agent.

2. The blueberry anthocyanin nutritional food tablet composition according to claim 1, characterized in that, The composition of each component by weight is as follows: 150–250 parts blueberry anthocyanin solid powder, 30–80 parts ginseng powder, 30–80 parts tea theanine, and 10–50 parts rice bran fatty alkyl alcohols.

3. The blueberry anthocyanin nutritional food tablet composition according to claim 2, characterized in that, The composition of each component by weight is as follows: 180-220 parts blueberry anthocyanin solid powder, 40-60 parts ginseng powder, 40-60 parts tea theanine, and 20-40 parts rice bran fatty alkyl alcohols.

4. The blueberry anthocyanin nutritional tablet composition according to any one of claims 1-3, characterized in that, The sweetener is mogroside, in parts by weight 1-10; the binder is microcrystalline cellulose, in parts by weight 2-15; and the release agent is magnesium stearate, in parts by weight 1-5.

5. The blueberry anthocyanin nutritional tablet composition according to any one of claims 1-3, characterized in that, The ginseng powder contains 3%–5% ginsenosides by mass; the theanine in the tea contains 20% L-theanine by mass.

6. The blueberry anthocyanin nutritional tablet composition according to any one of claims 1-3, characterized in that, The blueberry anthocyanins in the blueberry anthocyanin solid powder are extracted from "Lanmei No. 1" blueberry fruits.

7. The method for preparing the blueberry anthocyanin nutritional food tablet composition according to any one of claims 1-6, characterized in that, The direct compression process includes the following steps: Step 1: Accurately weigh the blueberry anthocyanin solid powder, ginseng powder, tea theanine, rice bran fatty alkyl alcohol, monk fruit glycosides and microcrystalline cellulose according to the specified weight proportions and put them into a three-dimensional mixer for thorough mixing; Step 2: Pass the above mixture through an 80-100 mesh sieve to granulate it, making the powder uniform; Step 3: Add the specified amount of magnesium stearate to the granulated powder and mix for 3-5 minutes for lubrication. Step 4: Feed the mixed materials into a tablet press for direct tableting. Step 5: The pressed food slices are inspected by a metal detector, sterilized, and then packaged inside and out to obtain the finished product.

8. The use of the blueberry anthocyanin nutritional tablet composition according to any one of claims 1-7 in the preparation of food products that support anti-fatigue nutritional supplementation.

9. The application according to claim 9, characterized in that, The composition is to be taken orally by humans, and the recommended daily intake of blueberry anthocyanins for adults is 400–600 mg.