Multi-grain brewing nutrition powder with blood glucose reducing and health care functions and preparation method of multi-grain brewing nutrition powder

Abstract

The invention discloses multi-grain brewing nutrition powder with blood glucose reducing and health care functions and a preparation method of the multi-grain brewing nutrition powder. The multi-grain brewing nutrition powder comprises corn flour, pumpkin powder, red bean powder, coix seed powder, yam flour, soybean flour, pine nut powder grease, walnut powder grease, green tea powder, bitter gourd powder, flaxseed powder, spirulina powder, fructo-oligosaccharide and xylitol. And vitamin mixture, calcium powder and magnesium powder. According to the invention, various cereals, nuts and functional components are scientifically proportioned, and advanced microencapsulation and spray drying technologies are adopted, so that the defects of the existing product in the aspects of nutrition balance, functionality and reconstituability are overcome.

Description

Technical Field

[0001] The invention relates to the field of food production, and in particular to a multi-grain instant nutrient powder with blood sugar-lowering and health-care functions and a preparation method thereof. Background Art

[0002] With the improvement of people's living standards and the enhancement of health awareness, the market demand for nutritionally balanced and convenient instant powder products is increasing. However, existing instant powder products have certain deficiencies in nutritional content, taste and functionality, and it is difficult to fully meet the needs of consumers.

[0003] Traditional cereal powder products are mainly based on single grains, with relatively simple nutritional ingredients. Long-term consumption can easily lead to nutritional imbalance. In addition, most of them only focus on basic nutrition and lack functional ingredients for specific health needs (such as lowering blood sugar, enhancing immunity, etc.).

[0004] In order to solve these problems, the present invention provides a multi-grain instant nutrient powder with blood sugar lowering and health care function and a preparation method thereof. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a multi-grain instant nutritional powder with blood sugar lowering and health care function and a preparation method thereof. By scientifically proportioning a variety of grains, nuts and functional ingredients and adopting advanced microencapsulation and spray drying technology, the deficiencies of existing products in nutritional balance, functionality and dispersibility are solved, and consumers' demand for high-quality nutritional powder products is met.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The invention provides a multi-grain instant nutritious powder with blood sugar lowering and health care function, comprising the following raw materials in weight proportions: 15-25 parts of corn flour, 10-20 parts of pumpkin flour, 8-12 parts of red bean flour, 8-12 parts of coix seed flour, 8-12 parts of yam flour, 8-12 parts of soybean flour, 4-6 parts of pine nut powder oil, 4-6 parts of walnut powder oil, 1-3 parts of green tea powder, 2-4 parts of bitter melon powder, 4-6 parts of flaxseed powder, 1-3 parts of spirulina powder, 2-4 parts of oligofructose, 1-3 parts of xylitol, 0.3-0.7 parts of vitamin mixture, 0.8-1.2 parts of calcium powder, and 0.3-0.7 parts of magnesium powder;

[0008] The oligofructose includes fructooligosaccharide and galacto-oligosaccharide, and the mass ratio is 1:1;

[0009] The vitamin mixture comprises: vitamin B1: 1000-2000 μg, vitamin B2: 1000-2000 μg, vitamin B3: 15000-30000 μg, vitamin B5: 5000-10000 μg, vitamin B6: 2000-4000 μg, vitamin B7: 100-300 μg, folic acid: 400-800 μg, vitamin C: 100-200 mg, vitamin D: 400-800 IU, vitamin E: 1000-2000 IU, vitamin K: 50-100 μg;

[0010] The calcium powder includes calcium carbonate and calcium citrate in a mass ratio of 2:1;

[0011] The magnesium powder includes magnesium oxide and magnesium chloride in a mass ratio of 1:1.

[0012] As a preferred technical solution of the present invention, the raw materials are included in the following weight proportions: 20 parts of corn flour, 15 parts of pumpkin flour, 10 parts of red bean flour, 10 parts of coix seed flour, 10 parts of yam flour, 10 parts of soybean flour, 5 parts of pine nut powder oil, 5 parts of walnut powder oil, 2 parts of green tea powder, 3 parts of bitter melon powder, 5 parts of flaxseed powder, 2 parts of spirulina powder, 3 parts of oligofructose, 2 parts of xylitol, 0.5 parts of vitamin mixture, 1 part of calcium powder, and 0.5 parts of magnesium powder.

[0013] As a preferred technical solution of the present invention, the raw materials are included in the following weight proportions: 18 parts of corn flour, 12 parts of pumpkin flour, 9 parts of red bean flour, 9 parts of coix seed flour, 9 parts of yam flour, 9 parts of soybean flour, 4.5 parts of pine nut powder oil, 4.5 parts of walnut powder oil, 1.5 parts of green tea powder, 2.5 parts of bitter melon powder, 4.5 parts of flaxseed powder, 1.5 parts of spirulina powder, 2.5 parts of oligofructose, 1.5 parts of xylitol, 0.4 parts of vitamin mixture, 0.9 parts of calcium powder, and 0.4 parts of magnesium powder.

[0014] As a preferred technical solution of the present invention, the raw materials are included in the following weight proportions: 22 parts of corn flour, 18 parts of pumpkin flour, 11 parts of red bean flour, 11 parts of coix seed flour, 11 parts of yam flour, 11 parts of soybean flour, 5.5 parts of pine nut powder oil, 5.5 parts of walnut powder oil, 2.5 parts of green tea powder, 3.5 parts of bitter melon powder, 5.5 parts of flaxseed powder, 2.5 parts of spirulina powder, 3.5 parts of oligofructose, 2.5 parts of xylitol, 0.6 parts of vitamin mixture, 1.1 parts of calcium powder, and 0.6 parts of magnesium powder.

[0015] The present invention also provides a method for preparing the multi-grain instant nutritional powder with blood sugar lowering and health care function, comprising the following steps:

[0016] S1. Raw material processing: First, the raw materials of corn, pumpkin, red bean, coix seed, yam, soybean, pine nut, walnut and flax seed are washed and impurities are removed, and then the raw materials are dried at a low temperature of 60°C to avoid high temperature destroying the nutrients. The drying time is 6-8 hours. Finally, the dried raw materials are crushed into fine powder using a pulverizer. The crushing particle size is within the range of 60-80 meshes to ensure that the powder is fine and uniform.

[0017] S2: Oil extraction and microencapsulation: Extract oil from pine nut powder and walnut powder, and use microencapsulation technology to encapsulate the oil to prevent oil oxidation;

[0018] S3. Processing of functional ingredients: First, freeze-drying and ultrafine grinding technology are used to process green tea and bitter melon. The freeze-drying temperature is set at -40°C and the drying time is 24 hours. After ultrafine grinding, the particle size is controlled below 30 microns to retain its active ingredients. Then, spray drying technology is used to process spirulina to retain its nutrients and active substances.

[0019] S4, mixing: firstly, mix the basic cereal powder, mix corn flour, pumpkin flour, red bean flour, coix seed flour, yam flour, and soybean flour in proportion, then add functional ingredients, add green tea powder, bitter melon powder, flax seed powder, and spirulina powder to the basic cereal powder, then add pine nut powder oil, walnut powder oil, and continue to mix evenly, finally add auxiliary ingredients, add oligofructose, xylitol, vitamin mixture, calcium powder, and magnesium powder, and continue to mix to ensure that all ingredients are evenly distributed, the mixing time is 15 minutes, and the mixing speed is 60 rpm;

[0020] S5. Spray drying: The mixed powder is dried by spray drying equipment to make instant powder. The prepared multi-grain instant nutritional powder is packaged in a sealed bag using vacuum packaging or nitrogen filling to ensure its freshness and shelf life.

[0021] As a preferred technical solution of the present invention, the specific steps of oil extraction and microencapsulation in step S2 are:

[0022] S21, extracting oil from pine nuts and walnuts using a cold pressing method, and filtering the extracted oil to remove impurities;

[0023] S22. Mix whey protein and maltodextrin in a ratio of 1:1 as the wall material of the microcapsule, use the extracted pine nut oil and walnut oil as the core material of the microcapsule, mix the core material oil with the wall material, and prepare microcapsule powder by spray drying. The spray drying inlet temperature is set to 160°C and the outlet temperature is set to 80°C.

[0024] As a preferred technical solution of the present invention, the specific steps of the spray drying in step S5 are as follows:

[0025] S51, dissolving the mixed powder in an appropriate amount of water to prepare a uniform suspension with a solid content controlled at 20%;

[0026] S52, drying the suspension by spray drying equipment, setting the air inlet temperature to 160°C, the air outlet temperature to 80°C, and the spray pressure to 0.4MPa.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1: The multi-grain instant nutritional powder of the present invention contains a variety of grains, nuts and functional ingredients, provides rich protein, fat, carbohydrates and dietary fiber, meets the daily nutritional needs of the human body, and through scientific proportioning, ensures that the nutritional value of each ingredient is maximized, avoiding the nutritional imbalance problem of single grain products.

[0029] 2: The present invention helps to regulate blood sugar levels and lower blood sugar through the active ingredients in green tea powder and bitter melon powder. It is suitable for diabetic patients and people who need to control blood sugar. The tea polyphenols in green tea and the bitter melon saponins in bitter melon have significant blood sugar-lowering effects and help prevent and control diabetes.

[0030] 3: The spirulina powder and the various vitamins and minerals in the vitamin mixture in the multi-grain instant nutritional powder of the present invention are helpful to enhance immunity and improve body resistance. Spirulina is rich in protein, vitamin B12 and antioxidants, which are helpful to enhance immune function.

[0031] 4: The oligofructose in the multi-grain instant nutritional powder of the present invention acts as a prebiotic, promotes intestinal health, improves digestive function, and can promote the growth of beneficial bacteria, improve the intestinal microecological environment, and help prevent constipation and intestinal diseases.

[0032] 5: The unsaturated fatty acids and vitamin E in the pine nut powder and walnut powder in the multi-grain instant nutritional powder of the present invention have an antioxidant effect and protect cells from free radical damage.

[0033] 6: The instant powder prepared by the spray drying technology of the present invention can improve the solubility and dispersibility of the powder, avoid caking and agglomeration, is easy to prepare and eat, and is suitable for the modern fast-paced lifestyle. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] Example 1

[0036] The invention provides a multi-grain instant nutritious powder with blood sugar lowering and health care function, comprising the following raw materials in weight proportions: 20 parts of corn flour, 15 parts of pumpkin flour, 10 parts of red bean flour, 10 parts of coix seed flour, 10 parts of yam flour, 10 parts of soybean flour, 5 parts of pine nut powder oil, 5 parts of walnut powder oil, 2 parts of green tea powder, 3 parts of bitter melon powder, 5 parts of flaxseed powder, 2 parts of spirulina powder, 3 parts of oligofructose, 2 parts of xylitol, 0.5 parts of vitamin mixture, 1 part of calcium powder, and 0.5 parts of magnesium powder;

[0037] Oligofructose includes fructooligosaccharide and galacto-oligosaccharide, with a mass ratio of 1:1;

[0038] Vitamin B1: 1500μg, Vitamin B2: 1500μg, Vitamin B3: 20000μg, Vitamin B5: 7500μg, Vitamin B6: 2500μg, Vitamin B7: 200μg, Folic acid: 600μg, Vitamin C: 150mg, Vitamin D: 600IU, Vitamin E: 1500IU, Vitamin K: 80μg;

[0039] The calcium powder includes calcium carbonate and calcium citrate in a mass ratio of 2:1;

[0040] The magnesium powder includes magnesium oxide and magnesium chloride in a mass ratio of 1:1.

[0041] Example 2

[0042] The invention provides a multi-grain instant nutritious powder with blood sugar lowering and health care function, comprising the following raw materials in weight proportions: 18 parts of corn flour, 12 parts of pumpkin flour, 9 parts of red bean flour, 9 parts of coix seed flour, 9 parts of yam flour, 9 parts of soybean flour, 4.5 parts of pine nut powder oil, 4.5 parts of walnut powder oil, 1.5 parts of green tea powder, 2.5 parts of bitter melon powder, 4.5 parts of flaxseed powder, 1.5 parts of spirulina powder, 2.5 parts of oligofructose, 1.5 parts of xylitol, 0.4 parts of vitamin mixture, 0.9 parts of calcium powder and 0.4 parts of magnesium powder;

[0043] Vitamin B1: 1200μg, Vitamin B2: 1200μg, Vitamin B3: 17000μg, Vitamin B5: 5000μg, Vitamin B6: 2000μg, Vitamin B7: 160μg, Folic acid: 500μg, Vitamin C: 120mg, Vitamin D: 500IU, Vitamin E: 1200IU, Vitamin K: 70μg

[0044] The calcium powder includes calcium carbonate and calcium citrate in a mass ratio of 2:1;

[0045] The magnesium powder includes magnesium oxide and magnesium chloride in a mass ratio of 1:1.

[0046] Example 3

[0047] The invention provides a multi-grain instant nutritious powder with blood sugar lowering and health care function, comprising the following raw materials in weight proportions: 22 parts of corn flour, 18 parts of pumpkin flour, 11 parts of red bean flour, 11 parts of coix seed flour, 11 parts of yam flour, 11 parts of soybean flour, 5.5 parts of pine nut powder oil, 5.5 parts of walnut powder oil, 2.5 parts of green tea powder, 3.5 parts of bitter melon powder, 5.5 parts of flaxseed powder, 2.5 parts of spirulina powder, 3.5 parts of oligofructose, 2.5 parts of xylitol, 0.6 parts of vitamin mixture, 1.1 parts of calcium powder, and 0.6 parts of magnesium powder;

[0048] Oligofructose includes fructooligosaccharide and galacto-oligosaccharide, with a mass ratio of 1:1;

[0049] Vitamin B1: 1800μg, Vitamin B2: 1800μg, Vitamin B3: 25000μg, Vitamin B5: 10000μg, Vitamin B6: 3000μg, Vitamin B7: 240μg, Folic acid: 700μg, Vitamin C: 180mg, Vitamin D: 700IU, Vitamin E: 1800IU, Vitamin K: 90μg;

[0050] The calcium powder includes calcium carbonate and calcium citrate in a mass ratio of 2:1;

[0051] The magnesium powder includes magnesium oxide and magnesium chloride in a mass ratio of 1:1.

[0052] Example 4

[0053] The present invention provides a method for preparing a multi-grain instant nutrient powder with blood sugar lowering and health care function, comprising the following steps:

[0054] S1. Raw material processing: First, the raw materials of corn, pumpkin, red bean, coix seed, yam, soybean, pine nut, walnut and flax seed are washed and impurities are removed, and then the raw materials are dried at a low temperature of 60°C to avoid high temperature destroying the nutrients. The drying time is 6-8 hours. Finally, the dried raw materials are crushed into fine powder using a pulverizer. The crushing particle size is within the range of 60-80 meshes to ensure that the powder is fine and uniform.

[0055] S2: Oil extraction and microencapsulation: Extract oil from pine nut powder and walnut powder, and use microencapsulation technology to encapsulate the oil to prevent oil oxidation;

[0056] S3. Processing of functional ingredients: First, freeze-drying and ultrafine grinding technology are used to process green tea and bitter melon. The freeze-drying temperature is set at -40°C and the drying time is 24 hours. After ultrafine grinding, the particle size is controlled below 30 microns to retain its active ingredients. Then, spray drying technology is used to process spirulina to retain its nutrients and active substances.

[0057] S4, mixing: firstly, mix the basic cereal powder, mix corn flour, pumpkin flour, red bean flour, coix seed flour, yam flour, and soybean flour in proportion, then add functional ingredients, add green tea powder, bitter melon powder, flax seed powder, and spirulina powder to the basic cereal powder, then add pine nut powder oil, walnut powder oil, and continue to mix evenly, finally add auxiliary ingredients, add oligofructose, xylitol, vitamin mixture, calcium powder, and magnesium powder, and continue to mix to ensure that all ingredients are evenly distributed, the mixing time is 15 minutes, and the mixing speed is 60 rpm;

[0058] S5. Spray drying: The mixed powder is dried by spray drying equipment to make instant powder. The prepared multi-grain instant nutritional powder is packaged in a sealed bag using vacuum packaging or nitrogen filling to ensure its freshness and shelf life.

[0059] Further, the specific steps of step S2 oil extraction and microencapsulation are:

[0060] S21, extracting oil from pine nuts and walnuts using a cold pressing method, and filtering the extracted oil to remove impurities;

[0061] S22. Mix whey protein and maltodextrin in a ratio of 1:1 as the wall material of the microcapsule, use the extracted pine nut oil and walnut oil as the core material of the microcapsule, mix the core material oil with the wall material, and prepare microcapsule powder by spray drying. The spray drying inlet temperature is set to 160°C and the outlet temperature is set to 80°C.

[0062] Further, the specific steps of step S5 spray drying are as follows:

[0063] S51, dissolving the mixed powder in an appropriate amount of water to prepare a uniform suspension with a solid content controlled at 20%;

[0064] S52, drying the suspension by spray drying equipment, setting the air inlet temperature to 160°C, the air outlet temperature to 80°C, and the spray pressure to 0.4MPa.

[0065] The nutritional components of the multi-grain instant nutritional powder foods prepared in Examples 1, 2 and 3 were tested.

[0066] Table 1:

[0067]

[0068] Table 1

[0069] In the formula, corn flour provides carbohydrates and dietary fiber, pumpkin powder is rich in vitamin A and dietary fiber, red bean powder is rich in protein, iron and dietary fiber, coix seed powder has diuretic and anti-inflammatory effects, yam powder is rich in mucus protein and aids digestion, soybean powder provides high-quality plant protein and isoflavones, pine nut powder is rich in unsaturated fatty acids and vitamin E, walnut powder is rich in omega-3 fatty acids and antioxidants, green tea powder is rich in tea polyphenols and helps lower blood sugar, bitter melon powder contains bitter melon saponins, which helps lower blood sugar, flaxseed powder is rich in omega-3 fatty acids and dietary fiber, and spirulina powder is rich in protein, vitamin B12 and antioxidants.

[0070] As can be seen from Table 1, the nutritional powder prepared by the present invention contains rich protein, fat, carbohydrates and dietary fiber, which helps to provide balanced nutrition and meet the daily energy and nutritional needs of the human body. Multiple vitamins and minerals, such as vitamin C, vitamin E, etc., have a positive effect on enhancing human immunity. The unsaturated fatty acids and dietary fiber therein help to lower the cholesterol level in the blood and maintain cardiovascular health, and the dietary fiber helps to promote intestinal peristalsis and maintain the health of the digestive system.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-grain instant nutritional powder with blood sugar lowering and health care function, characterized in that: The invention comprises the following raw materials in proportions by weight: 15-25 parts of corn flour, 10-20 parts of pumpkin flour, 8-12 parts of red bean flour, 8-12 parts of coix seed flour, 8-12 parts of yam flour, 8-12 parts of soybean flour, 4-6 parts of pine nut powder oil, 4-6 parts of walnut powder oil, 1-3 parts of green tea powder, 2-4 parts of bitter melon powder, 4-6 parts of flaxseed powder, 1-3 parts of spirulina powder, 2-4 parts of oligofructose, 1-3 parts of xylitol, 0.3-0.7 parts of vitamin mixture, 0.8-1.2 parts of calcium powder and 0.3-0.7 parts of magnesium powder; The oligofructose includes fructooligosaccharide and galacto-oligosaccharide, and the mass ratio is 1:1; The vitamin mixture comprises: vitamin B1: 1000-2000 μg, vitamin B2: 1000-2000 μg, vitamin B3: 15000-30000 μg, vitamin B5: 5000-10000 μg, vitamin B6: 2000-4000 μg, vitamin B7: 100-300 μg, folic acid: 400-800 μg, vitamin C: 100-200 mg, vitamin D: 400-800 IU, vitamin E: 1000-2000 IU, vitamin K: 50-100 μg; The calcium powder includes calcium carbonate and calcium citrate in a mass ratio of 2:1; The magnesium powder includes magnesium oxide and magnesium chloride in a mass ratio of 1:

1.

2. The multi-grain instant nutritional powder with blood sugar lowering and health care function according to claim 1, characterized in that: The invention comprises the following raw materials in proportions by weight: 20 parts of corn flour, 15 parts of pumpkin flour, 10 parts of red bean flour, 10 parts of coix seed flour, 10 parts of yam flour, 10 parts of soybean flour, 5 parts of pine nut powder oil, 5 parts of walnut powder oil, 2 parts of green tea powder, 3 parts of bitter melon powder, 5 parts of flaxseed powder, 2 parts of spirulina powder, 3 parts of oligofructose, 2 parts of xylitol, 0.5 parts of vitamin mixture, 1 part of calcium powder and 0.5 parts of magnesium powder.

3. The multi-grain instant nutritional powder with blood sugar lowering and health care function according to claim 1, characterized in that: The invention comprises the following raw materials in proportions by weight: 18 parts of corn flour, 12 parts of pumpkin flour, 9 parts of red bean flour, 9 parts of coix seed flour, 9 parts of yam flour, 9 parts of soybean flour, 4.5 parts of pine nut powder oil, 4.5 parts of walnut powder oil, 1.5 parts of green tea powder, 2.5 parts of bitter melon powder, 4.5 parts of flaxseed powder, 1.5 parts of spirulina powder, 2.5 parts of oligofructose, 1.5 parts of xylitol, 0.4 parts of vitamin mixture, 0.9 parts of calcium powder and 0.4 parts of magnesium powder.

4. The multi-grain instant nutritional powder with blood sugar lowering and health care function according to claim 1, characterized in that: The invention comprises the following raw materials in proportions by weight: 22 parts of corn flour, 18 parts of pumpkin flour, 11 parts of red bean flour, 11 parts of coix seed flour, 11 parts of yam flour, 11 parts of soybean flour, 5.5 parts of pine nut powder oil, 5.5 parts of walnut powder oil, 2.5 parts of green tea powder, 3.5 parts of bitter melon powder, 5.5 parts of flaxseed powder, 2.5 parts of spirulina powder, 3.5 parts of oligofructose, 2.5 parts of xylitol, 0.6 parts of vitamin mixture, 1.1 parts of calcium powder and 0.6 parts of magnesium powder.

5. A method for preparing the multi-grain instant nutritional powder with blood sugar lowering health function as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Raw material processing: First, the raw materials of corn, pumpkin, red bean, coix seed, yam, soybean, pine nut, walnut and flax seed are washed and impurities are removed, and then the raw materials are dried at a low temperature of 60°C to avoid high temperature destroying the nutrients. The drying time is 6-8 hours. Finally, the dried raw materials are crushed into fine powder using a pulverizer. The crushing particle size is within the range of 60-80 meshes to ensure that the powder is fine and uniform. S2: Oil extraction and microencapsulation: Extract oil from pine nut powder and walnut powder, and use microencapsulation technology to encapsulate the oil to prevent oil oxidation; S3. Processing of functional ingredients: First, freeze-drying and ultrafine grinding technology are used to process green tea and bitter melon. The freeze-drying temperature is set at -40°C and the drying time is 24 hours. After ultrafine grinding, the particle size is controlled below 30 microns to retain its active ingredients. Then, spray drying technology is used to process spirulina to retain its nutrients and active substances. S4, mixing: firstly, mix the basic cereal powder, mix corn flour, pumpkin flour, red bean flour, coix seed flour, yam flour, and soybean flour in proportion, then add functional ingredients, add green tea powder, bitter melon powder, flax seed powder, and spirulina powder to the basic cereal powder, then add pine nut powder oil, walnut powder oil, and continue to mix evenly, finally add auxiliary ingredients, add oligofructose, xylitol, vitamin mixture, calcium powder, and magnesium powder, and continue to mix to ensure that all ingredients are evenly distributed, the mixing time is 15 minutes, and the mixing speed is 60 rpm; S5. Spray drying: The mixed powder is dried by spray drying equipment to make instant powder. The prepared multi-grain instant nutritional powder is packaged in a sealed bag using vacuum packaging or nitrogen filling to ensure its freshness and shelf life.

6. The method for preparing the multi-grain instant nutritious powder with blood sugar lowering and health care function according to claim 5, characterized in that: The specific steps of the oil extraction and microencapsulation in step S2 are: S21, extracting oil from pine nuts and walnuts using a cold pressing method, and filtering the extracted oil to remove impurities; S22. Mix whey protein and maltodextrin in a ratio of 1:1 as the wall material of the microcapsule, use the extracted pine nut oil and walnut oil as the core material of the microcapsule, mix the core material oil with the wall material, and prepare microcapsule powder by spray drying. The spray drying inlet temperature is set to 160°C and the outlet temperature is set to 80°C.

7. The method for preparing the multi-grain instant nutritious powder with blood sugar lowering and health care function according to claim 5, characterized in that: The specific steps of the spray drying step S5 are as follows: S51, dissolving the mixed powder in an appropriate amount of water to prepare a uniform suspension with a solid content controlled at 20%; S52, drying the suspension by spray drying equipment, setting the air inlet temperature to 160°C, the air outlet temperature to 80°C, and the spray pressure to 0.4MPa.

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