Natural high-activity seleniferous rice germ powder and preparation process thereof
By using a five-ring, five-element ecological cycle cultivation and low-temperature processing technology, a natural, highly active SOD-enriched selenium-containing rice germ instant powder without any external additives is prepared. This solves the safety and stability problems of externally added active substances in existing technologies, and achieves endogenous enrichment and synergistic effects of the five major nutrient components, thereby improving the safety and nutritional activity of the product.
Patent Information
- Application Number
- CN202610967520.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-01
- Publication Date
- 2026-11-06
AI Technical Summary
Existing rice germ instant powders suffer from poor safety and instability due to the exogenous addition of active functional substances, unbalanced nutritional components, and nutrient loss due to rough processing technology. They cannot achieve the endogenous enrichment of the five major active nutrients, and the exogenous addition of chemical components at the processing end affects naturalness and safety.
Using the five-ring, five-element ecological cycle cultivation technology, and through low-temperature dehulling, purification, low-temperature grinding, and aseptic packaging processes, natural, highly active SOD-enriched selenium-rich rice germ instant powder without any external additives is prepared. It relies on the closed-loop cultivation and breeding system to endogenously enrich SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides, ensuring that the entire low-temperature processing does not exceed 45℃.
It achieves synergistic antioxidant and immunomodulatory effects from highly active SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides. The product is highly safe, has stable SOD activity, and excellent dissolution properties, making it suitable for large-scale production in functional agricultural industrial parks.
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Figure CN123037433A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of functional grain deep processing technology, specifically to natural high-activity SOD selenium-enriched rice germ instant powder and its preparation process. Background Technology
[0002] Rice germ is the nutritional core of rice, rich in amino acids, vitamins, and active proteins, making it a high-quality raw material for instant cereal drinks. However, ordinary rice germ instant powders on the market have four major shortcomings:
[0003] The exogenous addition of active functional substances results in poor safety and insufficient stability.
[0004] Most commercially available functional germ powders use ordinary rice germ as a base, with SOD enzyme preparations, selenite, and synthetic flavonoid extracts artificially added during processing. The added SOD is a biologically extracted industrial enzyme, which is easily deactivated during high-temperature grinding, sterilization, and reconstitution. Inorganic selenium salts have low absorption and utilization rates in the human body, and excessive intake poses a risk of heavy metal accumulation. Synthetic flavonoids have poor water solubility and low compatibility with grain matrices, easily leading to stratification and sedimentation during reconstitution. Furthermore, the added ingredients require additional preservatives to maintain shelf life, which does not meet the consumer demand for naturally healthy foods.
[0005] Single-ingredient cultivation results in unbalanced nutritional components and a lack of synergistic effects.
[0006] Current rice cultivation focuses solely on yield, neglecting targeted soil improvement. Rice germ contains only basic amino acids and cannot simultaneously enrich the five synergistic nutrients: SOD, organic selenium, plant flavonoids, and complex amino acids. Single-nutrient fortified products can only supplement a single nutrient and cannot achieve the combined effects of anti-oxidation, immune regulation, and trace element supplementation, resulting in low nutrient utilization.
[0007] The separation of planting, breeding, and processing makes it impossible to achieve a closed loop of endogenous nutrient enrichment.
[0008] Traditional agricultural models separate planting, breeding, and processing into independent industrial chains. Straw is directly discarded, and poultry manure is discharged indiscriminately, without any mechanism for recycling and returning it to the fields to improve the soil. It is impossible to build a "grain-grass-livestock-fertilizer" circular system through understory breeding, rice-wheat rotation, and the planting of leafy grasses. It is also difficult to achieve the endogenous enrichment of active nutrients in rice through ecological cycles. At the processing end, high-temperature polishing and high-temperature baking processes are mostly used, which cause serious decomposition and loss of natural SOD and flavonoids in rice germ due to heat, resulting in a significant reduction in the activity of the finished product.
[0009] The processing technology is rough, resulting in nutrient loss from the germ and poor reconstitution properties.
[0010] Conventional germ powder processing involves high-temperature puffing and high-speed high-temperature pulverization, resulting in the oxidation and rancidity of germ oils and a loss of over 60% of SOD activity. The lack of low-temperature stone mill physical grinding and grading leads to coarse germ particles that clump together and have poor solubility. Furthermore, the absence of aseptic sealing and freshness-locking processes results in long-term oxidation and spoilage after repackaging, exacerbating nutrient loss.
[0011] Currently available selenium-enriched rice cultivation technologies only supplement selenium without supporting SOD induction and cultivation or flavonoid enrichment technologies. SOD-enhanced rice cultivation relies solely on foliar application of enzyme solutions, without long-term improvement of the soil base, resulting in low retention rates of endogenous SOD in rice. There is no integrated closed-loop process for simultaneous enrichment of SOD, organic selenium, plant flavonoids, compound amino acids, and plant polysaccharides, meaning that the five major nutrient components cannot be naturally and simultaneously enriched in rice germ. The processing end can only artificially supplement them later, significantly reducing the naturalness of the product.
[0012] Currently, there is a surge in demand for natural, additive-free, and highly active functional instant cereals from sub-healthy individuals, the middle-aged and elderly, and mothers and infants. Consumers are rejecting artificial chemical additives and prefer the natural active nutrients generated endogenously during crop growth. Existing technologies cannot achieve endogenous enrichment of the five major active nutrients from the source of cultivation. Relying solely on exogenous addition at the processing stage results in significant shortcomings in the natural properties, nutritional activity, and safety of the product. Therefore, this paper proposes a natural, highly active SOD-enriched selenium-rich rice germ instant powder and its preparation process. Summary of the Invention
[0013] In view of this, the present invention provides natural, highly active SOD-enriched selenium-containing rice germ instant powder and its preparation process to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.
[0014] The technical solution of this invention is achieved as follows: a natural, highly active SOD-enriched selenium-rich rice germ powder is made by low-temperature grinding of a single raw material of functional rice germ that is endogenously enriched with five rings and five elements, without the addition of exogenous SOD enzyme preparations, inorganic selenium salts, synthetic plant flavonoids, artificial compound amino acids, preservatives, or thickeners.
[0015] The content of the natural endogenous enriched components of the functional rice germ is as follows: superoxide dismutase (SOD) activity ≥320U / g, organic selenium 300~350μg / 100g, total plant flavonoids ≥2.9g / 100g, total complex amino acids ≥10g / 100g, and plant polysaccharides ≥20g / 100g.
[0016] The powder has a moisture content of ≤6.0%, dissolves completely without clumping when mixed with 40℃ warm water for 30 seconds, and retains ≥88% of its SOD activity after 12 months of sealed storage at 25℃.
[0017] The preparation process of natural high-activity SOD selenium-enriched rice germ powder includes five core processes: five-ring five-element ecological cycle cultivation of SOD selenium-enriched functional rice, low-temperature dehulling of rice and precise separation of rice germ, low-temperature purification pretreatment of germ, traditional low-temperature stone mill grading and grinding, and aseptic strip bag freshness locking packaging.
[0018] The entire processing temperature does not exceed 45℃. It relies on a closed-loop planting and breeding system to achieve endogenous enrichment of SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides in the germ. No exogenous functional nutrient preparations are added during the processing stage.
[0019] More preferably, the five-ring, five-element ecological cycle cultivation of SOD selenium-enriched functional rice specifically includes the following steps:
[0020] S1 Variety Selection: Select rice varieties that are suitable for alkaline soil, have high germ yield, and have SOD enrichment potential, and cultivate and select high-quality seedlings in the laboratory.
[0021] S2 Soil Targeted Improvement: Applying understory livestock straw bio-organic fertilizer to improve paddy field soil. The organic fertilizer is prepared by anaerobic fermentation of rice and wheat straw, leafy grass, and ecological poultry and livestock manure.
[0022] S3 Rice-Wheat Rotation + Eating Leafy Grass Supporting Planting: Functional rice is planted during the rice season, wheat is rotated during the fallow season, and high-protein eating leafy grass is planted in the field as a supporting crop.
[0023] S4 Forest Ecological Cyclic Farming: Poultry are raised in the forest base and fed naturally with leafy grass and rice straw. Poultry manure is mixed with straw and fermented to prepare biological fertilizer for returning to the paddy fields, thus constructing an ecological closed loop of "grain-grass-livestock-fertilizer".
[0024] S5 rice is cultivated using a five-ring nutrient induction method during its growth period: foliage grass natural flavonoid extract is sprayed during the tillering stage, slow-release organic selenium fermented organic fertilizer is applied during the jointing stage, and natural plant polysaccharide extract is sprayed during the grain-filling stage. No inorganic selenium or artificial SOD chemical agents are used throughout the entire process.
[0025] S6 low-temperature, light-shielding mechanized rice harvesting equipment is used for light-shielding storage.
[0026] In a further preferred embodiment, in step S4, poultry and livestock manure, straw, and edible grass residue are mixed and anaerobically fermented for 45 days to decompose, producing straw-returned-to-field bio-organic fertilizer, with 700-900 kg of organic fertilizer applied per mu of paddy field.
[0027] More preferably, the step of low-temperature dehulling of rice and precise separation of rice germ is as follows:
[0028] S7 Low Temperature Air Pressure Dehulling: Rice is fed into a water-cooled dehulling device, and the temperature of the dehulling drum is controlled at ≤40℃;
[0029] S8 air separation + gravity grading: multi-stage sorting equipment separates whole rice germ and removes broken rice and moldy germ;
[0030] S9 sterile cold air rinses the germ, with the cold air temperature ≤35℃, draining the free moisture from the germ surface.
[0031] More preferably, the low-temperature purification pretreatment step of the embryo is as follows:
[0032] S10 Low-Temperature Vacuum Drying: The germ is placed in a vacuum drying chamber with a vacuum degree of 0.07~0.09MPa and a drying temperature of 38~42℃, and dried until the germ moisture content is 5.0%~6.0%;
[0033] S11 low-temperature ultraviolet sterilization, with an irradiation environment temperature ≤40℃, kills microorganisms on the surface of the germ without destroying the endogenous active nutrients of the germ.
[0034] More preferably, the traditional low-temperature stone mill grading and grinding step is as follows:
[0035] S12 Level 1 Water-Cooled Stone Mill Coarse Grinding: Purified germ is introduced into a temperature-controlled ancient stone mill with circulating cooling water. The real-time temperature of the grinding chamber is ≤45℃, completing the coarse grinding.
[0036] S13 secondary ultrafine low-temperature grinding, passing through a 120-mesh grading sieve, and re-grinding the coarse particles to obtain fine germ powder;
[0037] The grinding process relies entirely on physical water cooling for temperature control, eliminating high-temperature friction heat generation and fully preserving the intrinsic SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharide molecular activity of the germ.
[0038] In a further optimized manner, the ground germ powder is transferred to a nitrogen-filled sterile temporary storage chamber, with the chamber temperature controlled at 20~25℃ to isolate it from air and prevent the active ingredients from oxidizing and decomposing.
[0039] More preferably, the aseptic strip bag freshness-locking and packaging step is as follows:
[0040] S14 Class 10,000 aseptic workshop fully automated quantitative filling, single aluminum-plastic light-proof composite bag net content 20g;
[0041] S15 vacuum heat seal, with product batch and production date printed on it;
[0042] S16 multiple individual products are assembled into outer packaging gift boxes to obtain finished rice germ instant powder.
[0043] In a further preferred embodiment, the extracts of flavonoids from edible grass and the extracts of plant polysaccharides in step S5 are obtained by boiling and extracting edible grass and wheat straw grown in the field. They contain no chemical solvents or artificial additives and rely solely on natural plant extracts to induce the endogenous synthesis of the five major functional nutrients in rice.
[0044] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:
[0045] I. The product of this invention uses only functional rice germ enriched with five rings and five elements as the sole raw material, without any exogenous functional additives. The germ naturally contains highly active SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides. The preparation process constructs a closed loop of planting and breeding, namely "variety selection - soil improvement - rice-wheat rotation - forest-based circular breeding - straw organic fertilizer return to the field", which induces the endogenous synthesis of five major active nutrients in rice germ from the source of planting. It is equipped with low-temperature dehulling, germ purification, water-cooled ancient stone mill low-temperature grinding, and aseptic individual bag packaging. The temperature does not exceed 45℃ throughout the process, thus completely preserving the natural active nutrients of the germ.
[0046] Second, this invention abandons the conventional approach of adding chemical functional components from the outside during processing. Instead, it relies on ecological circular agriculture to achieve endogenous enrichment of nutrients. The product has high safety, stable SOD activity, and excellent solubility. The five major nutrient components work synergistically to resist oxidation, regulate immunity, and supplement essential trace elements for the human body. The entire process can be standardized and industrialized for replication. It is suitable for large-scale production in functional agricultural industrial parks and has good market prospects and creativity.
[0047] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0049] Figure 1 This is a process flow diagram of the present invention. Detailed Implementation
[0050] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0051] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0052] like Figure 1 As shown, this embodiment of the invention provides a natural, highly active SOD-enriched selenium-rich rice germ instant powder, which is made from a single raw material of functional rice germ with endogenous enrichment of five rings and five elements through low-temperature grinding, without the addition of exogenous SOD enzyme preparations, inorganic selenium salts, synthetic plant flavonoids, artificial compound amino acids, preservatives, or thickeners.
[0053] The content of natural endogenous enriched components in functional rice germ is as follows: superoxide dismutase (SOD) activity ≥320U / g, organic selenium 300~350μg / 100g, total plant flavonoids ≥2.9g / 100g, total complex amino acids ≥10g / 100g, and plant polysaccharides ≥20g / 100g.
[0054] The powder has a moisture content of ≤6.0%, dissolves completely without clumping when mixed with 40℃ warm water for 30 seconds, and retains ≥88% of SOD activity after 12 months of sealed storage at 25℃.
[0055] The preparation process of natural high-activity SOD selenium-enriched rice germ powder includes five core processes: five-ring five-element ecological cycle cultivation of SOD selenium-enriched functional rice, low-temperature dehulling of rice and precise separation of rice germ, low-temperature purification pretreatment of germ, traditional low-temperature stone mill grading and grinding, and aseptic strip bag freshness locking packaging.
[0056] The entire processing temperature does not exceed 45℃. It relies on a closed-loop planting and breeding system to achieve endogenous enrichment of SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides in the germ. No exogenous functional nutrient preparations are added during the processing stage.
[0057] In one embodiment, the five-ring, five-element ecological cycle cultivation of SOD-enriched selenium-functional rice specifically includes the following steps:
[0058] S1 Variety Selection: Select rice varieties that are suitable for alkaline soil, have high germ yield, and have SOD enrichment potential, and cultivate and select high-quality seedlings in the laboratory.
[0059] S2 Soil Targeted Improvement: Applying understory livestock straw bio-organic fertilizer to improve paddy field soil. The organic fertilizer is prepared by anaerobic fermentation of rice and wheat straw, leafy grass, and ecological poultry and livestock manure.
[0060] S3 Rice-Wheat Rotation + Eating Leafy Grass Supporting Planting: Functional rice is planted during the rice season, wheat is rotated during the fallow season, and high-protein eating leafy grass is planted in the field as a supporting crop.
[0061] S4 Forest Ecological Cyclic Farming: Poultry are raised in the forest base and fed naturally with leafy grass and rice straw. Poultry manure is mixed with straw and fermented to prepare biological fertilizer for returning to the paddy fields, thus constructing an ecological closed loop of "grain-grass-livestock-fertilizer".
[0062] S5 rice is cultivated using a five-ring nutrient induction method during its growth period: foliage grass natural flavonoid extract is sprayed during the tillering stage, slow-release organic selenium fermented organic fertilizer is applied during the jointing stage, and natural plant polysaccharide extract is sprayed during the grain-filling stage. No inorganic selenium or artificial SOD chemical agents are used throughout the entire process.
[0063] S6 low-temperature, light-shielding mechanized rice harvesting equipment is used for light-shielding storage.
[0064] In one embodiment, in step S4, poultry and livestock manure, straw, and edible grass residue are mixed and anaerobically fermented for 45 days to produce straw-returned-to-field bio-organic fertilizer, with 700-900 kg of organic fertilizer applied per mu of paddy field.
[0065] In one embodiment, the steps for low-temperature dehulling of rice and precise separation of rice germ are as follows:
[0066] S7 Low Temperature Air Pressure Dehulling: Rice is fed into a water-cooled dehulling device, and the temperature of the dehulling drum is controlled at ≤40℃;
[0067] S8 air separation + gravity grading: multi-stage sorting equipment separates whole rice germ and removes broken rice and moldy germ;
[0068] S9 sterile cold air rinses the germ, with the cold air temperature ≤35℃, draining the free moisture from the germ surface.
[0069] In one embodiment, the low-temperature purification pretreatment step of the embryo is as follows:
[0070] S10 Low-Temperature Vacuum Drying: The germ is placed in a vacuum drying chamber with a vacuum degree of 0.07~0.09MPa and a drying temperature of 38~42℃, and dried until the germ moisture content is 5.0%~6.0%;
[0071] S11 low-temperature ultraviolet sterilization, with an irradiation environment temperature ≤40℃, kills microorganisms on the surface of the germ without destroying the endogenous active nutrients of the germ.
[0072] In one embodiment, the traditional low-temperature stone mill grading and grinding step is as follows:
[0073] S12 Level 1 Water-Cooled Stone Mill Coarse Grinding: Purified germ is introduced into a temperature-controlled ancient stone mill with circulating cooling water. The real-time temperature of the grinding chamber is ≤45℃, completing the coarse grinding.
[0074] S13 secondary ultrafine low-temperature grinding, passing through a 120-mesh grading sieve, and re-grinding the coarse particles to obtain fine germ powder;
[0075] The grinding process relies entirely on physical water cooling for temperature control, eliminating high-temperature friction heat generation and fully preserving the intrinsic SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharide molecular activity of the germ.
[0076] In one embodiment, the ground germ powder is transferred to a nitrogen-filled sterile temporary storage chamber, with the chamber temperature controlled at 20~25°C to isolate it from air and prevent the active ingredients from oxidizing and decomposing.
[0077] In one embodiment, the aseptic strip bag freshness-locking and dispensing step is as follows:
[0078] S14 Class 10,000 aseptic workshop fully automated quantitative filling, single aluminum-plastic light-proof composite bag net content 20g;
[0079] S15 vacuum heat seal, with product batch and production date printed on it;
[0080] S16 multiple individual products are assembled into outer packaging gift boxes to obtain finished rice germ instant powder.
[0081] In one embodiment, the extracts of flavonoids from edible grass and the extracts of plant polysaccharides in step S5 are obtained by boiling and extracting edible grass and wheat straw planted in the field. They are free of chemical solvents and artificial additives, and rely solely on natural plant extracts to induce the endogenous synthesis of the five functional nutrient components in rice.
[0082] Example 1: Preparation of functional rice using endogenous enrichment technology at the planting and breeding ends
[0083] Variety selection: Select local japonica rice varieties adapted to alkaline soil in Lianyungang, cultivate seedlings in a laboratory at a constant temperature, and screen rice varieties with plump embryos and strong stress resistance;
[0084] Soil improvement: In the 2,000-mu functional rice base, 800 kg of fermented straw bio-organic fertilizer from forest breeding is applied per mu. The raw materials for the organic fertilizer are chicken manure, wheat straw, and leafy grass residues, which are anaerobic fermented and decomposed for 45 days.
[0085] Crop rotation program: After the rice planting season, winter wheat is rotated, and 50 mu of high-protein leafy grass is planted between the rows in the field. The leafy grass is harvested once a month.
[0086] Forest-based breeding cycle: Free-range chickens are raised in an 80-mu forest-based base. They are fed fresh leafy grass and chopped straw daily. Chicken manure is collected and mixed with straw and leafy grass to ferment and make fertilizer that is then returned to the paddy fields.
[0087] Nutritional induction during growth period:
[0088] Tillering stage: Crush the edible grass, boil it in water to extract natural flavonoid stock solution, dilute it and spray it on the leaves once every 15 days, for a total of 2 times;
[0089] During the jointing stage: Apply 300 kg of fermented organic fertilizer per mu to allow the soil to slowly release natural organic selenium;
[0090] During the grain-filling stage: Foliar spraying of diluted plant polysaccharide extracts from leafy grasses and wheat straw activates the synthesis of endogenous SOD in rice;
[0091] After the rice matures, it is harvested mechanically at low temperatures and stored in a dark warehouse at room temperature to avoid high temperature exposure.
[0092] Example 2: Low-temperature separation and purification process of rice germ
[0093] The functional rice cultivated in Example 1 was fed into a low-temperature air pressure dehulling machine, and the temperature was controlled at 38°C by circulating water cooling in the drum to complete the rice dehulling.
[0094] Multi-stage air separation + gravity separation equipment separates whole rice germ, removes broken rice and moldy grains, and achieves a whole germ yield of 92%.
[0095] The germ surface is rinsed with 32℃ sterile cold air to remove dust and drain free moisture.
[0096] The vacuum drying chamber has a vacuum degree of 0.08 MPa and a drying temperature of 40℃, drying the germ to a moisture content of 5.6%.
[0097] Sterilization by ultraviolet irradiation at 38℃ for 30 minutes resulted in a total bacterial count of ≤10 CFU / g on the surface of the germ.
[0098] Example 3: Preparation of germ powder by low-temperature traditional stone mill grinding
[0099] After purification, the germ is fed into a traditional stone mill, where the jacketed cooling water is circulated to control the temperature, and the grinding chamber is kept at a stable 42°C for primary coarse grinding.
[0100] The coarsely ground material is fed into the germ fine processing system for secondary ultrafine grinding, passing through a 120-mesh standard sieve, and the coarse particles are returned for re-grinding;
[0101] The ground germ powder is transferred to a nitrogen-filled sterile temporary storage chamber, which is kept at a temperature of 22°C to prevent SOD oxidation and inactivation.
[0102] The endogenous nutrient indicators of the germ powder obtained from the test are as follows:
[0103] SOD activity 336U / g; organic selenium 332μg / 100g; total flavonoids 3.12g / 100g; complex amino acids 10.7g / 100g; plant polysaccharides 21.5g / 100g, with no exogenous added functional ingredients.
[0104] Example 4: Aseptic Individually Packaged Finished Products
[0105] The aseptically stored germ powder is transported to a Class 10,000 aseptic filling workshop, where a fully automatic filling machine dispenses 20g / packet aluminum-plastic composite light-proof bags.
[0106] Vacuum heat sealing, batch number and production date printed;
[0107] Multiple individual items are packaged into a paper gift box to obtain the finished product: natural, highly active SOD-enriched selenium-rich rice germ instant powder;
[0108] Finished product testing: It completely dissolves in 40℃ warm water for 30 seconds without clumping; after 12 months of storage at room temperature, the SOD activity retention rate was 89.2%, and inorganic selenium was not detected, which meets food safety standards.
[0109] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.
Claims
1. A natural high-activity SOD rich selenium rice germ brewing powder, characterized in that, It is made from a single raw material of functional rice germ enriched with five rings and five elements at low temperature, without any external addition of SOD enzyme preparation, inorganic selenium salt, synthetic plant flavonoids, artificial compound amino acids, preservatives, or thickeners. The content of the natural endogenous enriched components of the functional rice germ is as follows: superoxide dismutase (SOD) activity ≥320U / g, organic selenium 300~350μg / 100g, total plant flavonoids ≥2.9g / 100g, total complex amino acids ≥10g / 100g, and plant polysaccharides ≥20g / 100g. The powder has a moisture content of ≤6.0%, dissolves completely without clumping when mixed with 40℃ warm water for 30 seconds, and retains ≥88% of its SOD activity after 12 months of sealed storage at 25℃.
2. The process for preparing the natural high-activity SOD rich selenium rice germ brewing powder of claim 1, characterized in that, It includes five core processes: five-ring five-element ecological cycle cultivation of SOD selenium-enriched functional rice, low-temperature dehulling of rice and precise separation of rice germ, low-temperature purification pretreatment of germ, traditional low-temperature stone mill grading and grinding, and aseptic strip bag freshness locking and packaging. The entire processing temperature does not exceed 45℃. It relies on a closed-loop planting and breeding system to achieve endogenous enrichment of SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharides in the germ. No exogenous functional nutrient preparations are added during the processing stage.
3. The preparation process according to claim 2, characterized in that, The specific steps involved in cultivating SOD-enriched selenium-functional rice using the five-ring, five-element ecological cycle are as follows: S1 Variety Selection: Select rice varieties that are suitable for alkaline soil, have high germ yield, and have SOD enrichment potential, and cultivate and select high-quality seedlings in the laboratory. S2 Soil Targeted Improvement: Applying understory livestock straw bio-organic fertilizer to improve paddy field soil. The organic fertilizer is prepared by anaerobic fermentation of rice and wheat straw, leafy grass, and ecological poultry and livestock manure. S3 Rice-Wheat Rotation + Eating Leafy Grass Supporting Planting: Functional rice is planted during the rice season, wheat is rotated during the fallow season, and high-protein eating leafy grass is planted in the field as a supporting crop. S4 Forest Ecological Cyclic Farming: Poultry are raised in the forest base and fed naturally with leafy grass and rice straw. Poultry manure is mixed with straw and fermented to prepare biological fertilizer for returning to the paddy fields, thus constructing an ecological closed loop of "grain-grass-livestock-fertilizer". S5 rice is cultivated using a five-ring nutrient induction method during its growth period: foliage grass natural flavonoid extract is sprayed during the tillering stage, slow-release organic selenium fermented organic fertilizer is applied during the jointing stage, and natural plant polysaccharide extract is sprayed during the grain-filling stage. No inorganic selenium or artificial SOD chemical agents are used throughout the entire process. S6 low-temperature, light-shielding mechanized rice harvesting equipment is used for light-shielding storage.
4. The preparation process according to claim 3, characterized in that, In step S4, poultry and livestock manure, straw, and edible grass residue are mixed and anaerobically fermented for 45 days to produce straw-returned bio-organic fertilizer. 700-900 kg of organic fertilizer is applied per mu of paddy field.
5. The preparation process according to claim 2, characterized in that, The steps for low-temperature dehulling of rice and precise separation of rice germ are as follows: S7 Low Temperature Air Pressure Dehulling: Rice is fed into a water-cooled dehulling device, and the temperature of the dehulling drum is controlled at ≤40℃; S8 air separation + gravity grading: multi-stage sorting equipment separates whole rice germ and removes broken rice and moldy germ; S9 sterile cold air rinses the germ, with the cold air temperature ≤35℃, draining the free moisture from the germ surface.
6. The preparation process according to claim 2, characterized in that, The low-temperature purification and pretreatment step of the embryo is as follows: S10 Low-Temperature Vacuum Drying: The germ is placed in a vacuum drying chamber with a vacuum degree of 0.07~0.09MPa and a drying temperature of 38~42℃, and dried until the germ moisture content is 5.0%~6.0%; S11 low-temperature ultraviolet sterilization, with an irradiation environment temperature ≤40℃, kills microorganisms on the surface of the germ without destroying the endogenous active nutrients of the germ.
7. The preparation process according to claim 2, characterized in that, The ancient low-temperature stone mill grading and grinding steps are as follows: S12 Level 1 Water-Cooled Stone Mill Coarse Grinding: Purified germ is introduced into a temperature-controlled ancient stone mill with circulating cooling water. The real-time temperature of the grinding chamber is ≤45℃, completing the coarse grinding. S13 secondary ultrafine low-temperature grinding, passing through a 120-mesh grading sieve, and re-grinding the coarse particles to obtain fine germ powder; The grinding process relies entirely on physical water cooling for temperature control, eliminating high-temperature friction heat generation and fully preserving the intrinsic SOD, organic selenium, plant flavonoids, complex amino acids, and plant polysaccharide molecular activity of the germ.
8. The preparation process according to claim 7, characterized in that, The ground germ powder is transferred to a nitrogen-filled sterile temporary storage chamber, with the chamber temperature controlled at 20~25℃ to isolate it from air and prevent the active ingredients from oxidizing and decomposing.
9. The preparation process according to claim 2, characterized in that, The aseptic strip bag freshness-locking and packaging steps are as follows: S14 Class 10,000 aseptic workshop fully automated quantitative filling, single aluminum-plastic light-proof composite bag net content 20g; S15 vacuum heat seal, with product batch and production date printed on it; S16 multiple individual products are assembled into outer packaging gift boxes to obtain finished rice germ instant powder.
10. The preparation process according to claim 3, characterized in that, In step S5, the extracts of flavonoids from edible grass and the extracts of plant polysaccharides are obtained by boiling edible grass and wheat straw planted in the field. There are no chemical solvents or artificial additives. The rice relies solely on natural plant extracts to induce the endogenous synthesis of the five major functional nutrients.