Nutritional powder containing iron, yam, colostrum and beta-glucan and preparation method thereof

Abstract

The application discloses a kind of nutrition powder containing iron stick yam, sheep colostrum and beta-glucan and preparation method thereof, belong to the technical field of nutritional food.The nutrition powder is made of iron stick yam powder 30-50 parts, sheep colostrum powder 15-30 parts, beta-glucan 5-15 parts, low oligoisomaltooligosaccharide 3-8 parts, red date powder 4-10 parts and compound vitamin 0.1-0.5 parts by weight fraction.The preparation method includes: the microencapsulated powder is prepared by color protection soaking, low-temperature gradient drying and compound enzymolysis of iron stick yam, and then freeze-drying;the active powder is prepared by cold chain degreasing, low-temperature sterilization and ultrafiltration concentration of sheep colostrum, and then vacuum freeze-drying;the high-soluble powder is prepared by emulsification homogenization and spray modification of beta-glucan;finally, the finished product is obtained by mixing with auxiliary materials, sterilization and sieving.The application has the effects of spleen and stomach nourishing, immune regulation and intestinal care through the triple synergy of mucoprotein of iron stick yam, immune globulin of sheep colostrum and beta-glucan.

Description

Technical Field

[0001] This invention relates to the field of nutritional and health food technology, specifically to a nutritional powder containing Chinese yam, sheep colostrum and β-glucan, and its preparation method. Background Technology

[0002] With the increasing health awareness of the public, nutritional powders that are both food and medicine have become a mainstream choice for daily dietary supplements. Iron yam, a traditional medicinal herb from Jiaozuo, Henan, is rich in mucoprotein, diosgenin, polysaccharides, and various minerals. It has traditional effects of strengthening the spleen and stomach, and replenishing qi and blood. However, most existing iron yam powders are produced using high-temperature drying or roasting processes, resulting in significant loss of heat-sensitive active ingredients. Furthermore, they are prone to clumping when mixed with water, leading to low bioavailability.

[0003] Colostrum is the milk secreted by dairy goats within 72 hours after lambing. It is rich in immunoglobulins, lactoferrin, growth factors and various active peptides, and has a significant immunomodulatory effect. However, the active ingredients in colostrum are sensitive to temperature. Conventional spray drying can cause a large number of immunoglobulins to be inactivated. In addition, single colostrum products are more irritating to the gastrointestinal tract and have poor absorption in people with weak spleen and stomach.

[0004] Beta-glucan is a natural immune polysaccharide, with yeast beta-glucan exhibiting the best activity. It can activate macrophages and regulate the intestinal microecology. However, natural beta-glucan has poor water solubility and tends to agglomerate when mixed with water. Adding it directly to nutritional powder will lead to decreased product dispersibility and low absorption and utilization rate by the human body.

[0005] In the existing technology, the compound health-preserving fruit powder of iron yam with announcement number CN113317465A is an application for iron yam compound health-preserving fruit powder. This application combines iron yam with fruit and vegetable powder, focusing only on basic nutritional supplementation and without immune-active ingredients. The announcement number CN120419609A discloses a compound freeze-dried powder that enhances the absorption of total nutrition in the intestines by combining sheep colostrum with regular milk. The powder comprises the following components by weight: 20-30 parts sheep colostrum concentrate, 35-45 parts sheep regular milk, 10-18 parts sucrose-inulin-skimmed milk powder protectant, 2-3 parts encapsulated probiotics, 3-6 parts galactooligosaccharides, 3-6 parts resistant dextrin, 0.8-1.2 parts microencapsulated black pepper extract, 0.8-1.2 parts combined enzyme, 0.6-1 part glutamine, 0.1-0.2 parts zinc gluconate, 1-2 parts fucoidan, and 1-2 parts Poria cocos polysaccharide. This invention achieves dual release of immunity and nutrition through a colostrum / regular milk composite framework, reduces the load through enzymatic pre-digestion, and promotes absorption through piperine microcapsules; double-layer encapsulation of probiotics ensures activity, polysaccharide-zinc combination strengthens the barrier, and low-temperature freeze-drying process forms a porous structure to achieve efficient absorption and long-lasting function. This application uses a combination of sheep colostrum and regular milk, without combining food and medicine homologous ingredients to improve gastrointestinal absorption. A β-glucan-containing instant product, with announcement number CN102919964A, is composed of the following raw materials in the indicated weight ratios: β-glucan powder 7.5-80%, cocoa butter 6-20%, ultrafine carrot powder 0-30%, ultrafine barley powder 0-30%, and erythritol 0-40%. The invention also discloses a method for preparing this product. This invention enables rapid dissolution of β-glucan in everyday drinking water, provides certain health benefits, is convenient to consume, has a good taste, and meets the recommended dosage for β-glucan to achieve its health benefits. However, it only improves solubility through emulsifiers and does not form a synergistic effect with spleen-strengthening or immune-boosting components.

[0006] To address the aforementioned issues, we propose a nutritional powder containing Chinese yam, sheep colostrum, and β-glucan, along with its preparation method. Summary of the Invention

[0007] The purpose of this invention is to provide a nutritional powder containing Chinese yam, sheep colostrum and β-glucan and its preparation method, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a nutritional powder containing Chinese yam, sheep colostrum, and β-glucan, made from the following raw materials in parts by weight: 30-50 parts of Chinese yam powder, 15-30 parts of sheep colostrum powder, 5-15 parts of β-glucan, 3-8 parts of isomaltooligosaccharide, 4-10 parts of jujube powder, and 0.1-0.5 parts of compound vitamins.

[0009] Preferably, it is made from the following raw materials in parts by weight: 42 parts of Chinese yam powder, 22 parts of sheep colostrum powder, 10 parts of β-glucan, 5 parts of isomaltooligosaccharide, 7 parts of jujube powder, and 0.3 parts of compound vitamins.

[0010] Preferably, the β-glucan is yeast β-glucan with a purity ≥70%; The compound vitamin is composed of vitamin A, vitamin D, vitamin B1, and vitamin B2 in a mass ratio of 2:1:3:3.

[0011] Another aspect of the present invention provides a method for preparing the above-mentioned nutritional powder containing iron-rich yam, sheep colostrum, and β-glucan, comprising the following steps: S1. Prepare microencapsulated powder of Dioscorea opposita, active powder of colostrum from sheep, and modified β-glucan powder, respectively, wherein: S11. Preparation of microencapsulated powder of Chinese yam: Select fresh Chinese yam from loess soil, wash and peel it, cut it into 1.5-2.5 mm thin slices, soak it in color-protecting solution for 20-40 min, take it out and rinse it, and then perform low-temperature gradient drying. After compound enzymatic hydrolysis, enzyme inactivation, freeze drying, ultra-fine pulverization, and passing it through an 80-120 mesh sieve, Chinese yam microencapsulated powder is obtained. S12. Preparation of active sheep colostrum powder: Fresh colostrum from healthy dairy goats within 72 hours after lambing is collected, transported in a cold chain at 0-4℃, centrifuged to defatted, with the fat content controlled to ≤0.8%, pasteurized at 62-65℃ for 15-20 minutes, and then concentrated by ultrafiltration to a solid content of 35-40%. After vacuum freeze-drying and low-temperature pulverization, it is passed through an 80-120 mesh sieve to obtain active sheep colostrum powder. S13. Preparation of modified β-glucan powder: β-glucan and glyceryl monostearate are mixed at a mass ratio of 25:1 and dissolved in pure water at 50-55℃ to prepare a liquid with a mass concentration of 12-15%. After high-pressure homogenization, the liquid is spray-dried and passed through an 80-120 mesh sieve to obtain modified β-glucan powder. S2. Add the microencapsulated powder of Chinese yam, active powder of sheep colostrum, modified β-glucan powder, isomaltooligosaccharide, red date powder, and compound vitamins into a three-dimensional motion mixer in proportion, mix for 25-35 minutes until uniform, sterilize by irradiation with ultraviolet light at a wavelength of 254nm for 10-15 minutes, and then pass through a 100-mesh sieve to obtain the finished product.

[0012] Preferably, the color-protecting solution is a calcium ascorbate solution with a mass concentration of 0.3-0.5%, and the soaking temperature is 20-25°C.

[0013] Preferably, the low-temperature gradient drying is divided into three stages: the first stage is at 55°C for 4 hours, the second stage is at 45°C for 6 hours, and the third stage is at 35°C for 8 hours. After drying, the moisture content of the yam slices is 10-12%.

[0014] Preferably, the compound enzymatic hydrolysis step is as follows: After pulverizing the dried yam slices, add purified water at a material-to-liquid ratio of 1:8, adjust the pH to 5.5-6.0, add 0.2% α-amylase and 0.15% pectinase by weight of the dried yam powder, and enzymatically hydrolyze at 50-55℃ for 90-120 minutes. After enzymatic hydrolysis, raise the temperature to 90℃ for 10 minutes to inactivate the enzyme.

[0015] Preferably, the high-pressure homogenization parameters are: Homogenization pressure 28–32 MPa, temperature 50–55 °C, homogenization twice; The spray drying parameters are: inlet air temperature 165-175℃, outlet air temperature 75-80℃, and feed flow rate 15-20mL / min.

[0016] Preferably, the vacuum freeze-drying parameters are: Cold trap temperature -45~-50℃, vacuum degree 10~20Pa, drying time 20~24h, moisture content of freeze-dried material ≤5%.

[0017] Preferably, the rotational speed of the three-dimensional motion mixer is 15-20 r / min, and the material temperature is controlled at 20-25℃ during the mixing process.

[0018] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes the mucoprotein from Chinese yam to repair the gastric mucosa and improve the spleen and stomach's digestive function, laying the foundation for nutrient absorption. Sheep colostrum immunoglobulin directly replenishes humoral immunity, enhancing the body's resistance. β-glucan activates intestinal immune cells and regulates the balance of the gut microbiota. These three components synergistically achieve a full-chain effect of "strengthening the spleen and promoting absorption, replenishing immunity and enhancing resistance, and nourishing the intestines and strengthening the intestinal barrier," resulting in efficacy superior to single or binary compound products.

[0019] This invention employs a proprietary process to address the varying heat sensitivity of different raw materials: Chinese yam undergoes low-temperature gradient drying combined with enzymatic hydrolysis, resulting in a mucoprotein retention rate of ≥90%; sheep colostrum utilizes a cold-chain freeze-drying process, achieving an immunoglobulin IgG activity retention rate of ≥92%; and β-glucan undergoes emulsification modification, increasing its cold water solubility to over 85%. This addresses the shortcomings of traditional high-temperature processes, such as significant activity loss and poor reconstitution properties. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the process flow of the present invention. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 A nutritional powder containing Chinese yam, sheep colostrum and β-glucan is made from the following ingredients in parts by weight: 42 parts Chinese yam powder, 22 parts sheep colostrum powder, 10 parts β-glucan, 5 parts isomaltooligosaccharide, 7 parts jujube powder, and 0.3 parts compound vitamins.

[0023] like Figure 1 As shown, a method for preparing a nutritional powder containing Chinese yam, sheep colostrum, and β-glucan includes the following steps: S1. Prepare microencapsulated powder of Dioscorea opposita, active powder of colostrum from sheep, and modified β-glucan powder respectively: S11. Preparation of microencapsulated powder of Chinese yam: Select Chinese yam from Lu soil in Wenxian County, Henan Province. Wash with clean water, peel with a stainless steel knife, and cut into 2mm thick slices. Soak in 0.4% calcium ascorbate solution at 25℃ for 30 minutes, then rinse twice with pure water. Place in a hot air drying oven for gradient drying: dry at 55℃ for 4 hours, 45℃ for 6 hours, and 35℃ for 8 hours until the moisture content is 11%. Crush the dried yam slices, add purified water at a material-to-liquid ratio of 1:8, adjust the pH to 5.8, add 0.2% α-amylase and 0.15% pectinase, and enzymatically hydrolyze at 52℃ for 100 minutes. Heat to 90℃ to inactivate the enzyme for 10 minutes, cool, and place in a freeze-drying tray. Freeze-dry for 22 hours under a cold trap temperature of -48℃ and a vacuum degree of 15Pa. After removal, ultrafine pulverize and pass through a 100-mesh sieve to obtain microencapsulated powder of Chinese yam.

[0024] S12. Preparation of active sheep colostrum powder: Fresh colostrum was collected from healthy Saanen dairy goats within 48 hours after lambing and transported to the workshop via cold chain at 0-4℃; it was centrifuged at 4000r / min for 15min to defatted and the fat content was adjusted to 0.6%; it was pasteurized at 63℃ for 18min; it was concentrated through an ultrafiltration membrane to a solid content of 38%; it was injected into a freeze dryer and freeze-dried at a cold trap temperature of -48℃ and a vacuum degree of 12Pa for 22h; it was pulverized at a low temperature of 18℃ and passed through a 100-mesh sieve to obtain active sheep colostrum powder.

[0025] S13. Preparation of modified β-glucan powder: Yeast β-glucan (75% purity) and glyceryl monostearate were mixed at a mass ratio of 25:1, and pure water at 52℃ was added to prepare a 13% concentration solution; homogenized twice at 30MPa and 52℃; dried using a spray dryer with an inlet air temperature of 170℃, an outlet air temperature of 78℃, and a feed flow rate of 18mL / min; the dried powder was collected and passed through a 100-mesh sieve to obtain modified β-glucan powder.

[0026] S2. Weigh the above three powders according to the ratio, add isomaltooligosaccharide, jujube powder, and compound vitamins, put them into a three-dimensional motion mixer, mix at 18 r / min and 22℃ for 30 min; after mixing, sterilize by irradiation with 254nm ultraviolet light for 12 min; finally pass through a 100-mesh sieve with a sieve pass rate of 99.6% to obtain the finished product.

[0027] Example 2 The difference between this embodiment and Embodiment 1 lies in the weight proportions of the raw materials: 30 parts of Chinese yam powder, 30 parts of sheep colostrum powder, 5 parts of β-glucan, 8 parts of isomaltooligosaccharide, 10 parts of jujube powder, and 0.1 parts of compound vitamins. The preparation method is exactly the same as in Embodiment 1.

[0028] Example 3 The difference between this embodiment and Embodiment 1 lies in the weight proportions of the raw materials: 50 parts of Chinese yam powder, 15 parts of sheep colostrum powder, 15 parts of β-glucan, 3 parts of isomaltooligosaccharide, 4 parts of jujube powder, and 0.5 parts of compound vitamins. The preparation method is exactly the same as in Embodiment 1.

[0029] Example 4 The difference between this embodiment and Example 1 lies in the process parameters: the color-protecting solution concentration is 0.3%, the soaking time is 40 min; the three low-temperature drying times are 5 h, 5 h, and 9 h respectively; the enzymatic hydrolysis time is 90 min; the homogenization pressure is 28 MPa; and the spray drying inlet air temperature is 165℃. The remaining raw material ratios and operating steps are the same as in Example 1.

[0030] Example 5 The difference between this embodiment and Example 1 lies in the process parameters: the color-protecting solution concentration is 0.5%, the soaking time is 20 min; the three low-temperature drying times are 3 h, 7 h, and 7 h respectively; the enzymatic hydrolysis time is 120 min; the homogenization pressure is 32 MPa; and the spray drying inlet air temperature is 175℃. The remaining raw material ratios and operating steps are the same as in Example 1.

[0031] Comparative Example 1 (CN113317465A Iron Yam Compound Health-Preserving Fruit-Flavored Powder) Prepared according to the formula of Example 1 in Comparative Document 1: 55 parts of Chinese yam powder, 12 parts of apple powder, 8 parts of hawthorn powder, 15 parts of maltodextrin, and 10 parts of white sugar, the finished product was obtained by conventional hot air drying and pulverizing mixing process.

[0032] Comparative Example 2 (CN120419609A A compound freeze-dried powder of sheep colostrum synergistically improving the absorption of total nutrition in the intestine) Prepared according to the formulation of Example 1 in Comparative Document 2: 25 parts of concentrated sheep colostrum, 40 parts of normal sheep milk, 14 parts of inulin protectant, and 5 parts of galactooligosaccharides, and the finished product was obtained by conventional freeze-drying process.

[0033] Comparative Example 3 (CN102919964A A β-glucan-containing instant product and its preparation method) Prepared according to the formulation of Example 1 in Comparative Document 3: 58 parts β-glucan powder, 12 parts cocoa butter, 15 parts highland barley powder, and 5 parts erythritol, the finished product was obtained by ethanol emulsification and drying process. Experimental Example 1: Testing of Active Ingredients and Reconstitution Performance

[0034] The samples from Examples 1-5 and Comparative Examples 1-3 were tested for their indicators, and the results are shown in Table 1.

[0035] Table 1 Sample performance test results

[0036] As shown in Table 1, the active ingredient retention rate, mixing speed, and sensory quality of the embodiments of the present invention are significantly better than those of the three comparative examples, proving the superiority of the formulation and process of the present invention.

[0037] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nutritional powder containing Chinese yam, sheep colostrum, and β-glucan, characterized in that, Made from the following parts by weight of raw materials: 30-50 parts of Chinese yam powder, 15-30 parts of sheep colostrum powder, 5-15 parts of β-glucan, 3-8 parts of isomaltooligosaccharide, 4-10 parts of jujube powder, and 0.1-0.5 parts of compound vitamins.

2. The nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 1, characterized in that, Made from the following parts by weight of raw materials: 42 parts of Chinese yam powder, 22 parts of sheep colostrum powder, 10 parts of β-glucan, 5 parts of isomaltooligosaccharide, 7 parts of jujube powder, and 0.3 parts of compound vitamins.

3. The nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 1, characterized in that, The β-glucan is yeast β-glucan with a purity ≥70%; The compound vitamin is composed of vitamin A, vitamin D, vitamin B1, and vitamin B2 in a mass ratio of 2:1:3:

3.

4. A method for preparing a nutritional powder containing iron-rich yam, sheep colostrum, and β-glucan as described in any one of claims 1-3, characterized in that, Includes the following steps: S1. Prepare microencapsulated powder of Dioscorea opposita, active powder of colostrum from sheep, and modified β-glucan powder, respectively, wherein: S11. Preparation of microencapsulated powder of Chinese yam: Select fresh Chinese yam from loess soil, wash and peel it, cut it into 1.5-2.5 mm thin slices, soak it in color-protecting solution for 20-40 min, take it out and rinse it, and then perform low-temperature gradient drying. After compound enzymatic hydrolysis, enzyme inactivation, freeze drying, ultra-fine pulverization, and passing it through an 80-120 mesh sieve, Chinese yam microencapsulated powder is obtained. S12. Preparation of active sheep colostrum powder: Fresh colostrum from healthy dairy goats within 72 hours after lambing is collected, transported in a cold chain at 0-4℃, centrifuged to defatted, with the fat content controlled to ≤0.8%, pasteurized at 62-65℃ for 15-20 minutes, and then concentrated by ultrafiltration to a solid content of 35-40%. After vacuum freeze-drying and low-temperature pulverization, it is passed through an 80-120 mesh sieve to obtain active sheep colostrum powder. S13. Preparation of modified β-glucan powder: β-glucan and glyceryl monostearate are mixed at a mass ratio of 25:1 and dissolved in pure water at 50-55℃ to prepare a liquid with a mass concentration of 12-15%. After high-pressure homogenization, the liquid is spray-dried and passed through an 80-120 mesh sieve to obtain modified β-glucan powder. S2. Add the microencapsulated powder of Chinese yam, active powder of sheep colostrum, modified β-glucan powder, isomaltooligosaccharide, red date powder, and compound vitamins into a three-dimensional motion mixer in proportion, mix for 25-35 minutes until uniform, sterilize by irradiation with ultraviolet light at a wavelength of 254nm for 10-15 minutes, and then pass through a 100-mesh sieve to obtain the finished product.

5. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The color-protecting solution is a calcium ascorbate solution with a mass concentration of 0.3-0.5%, and the soaking temperature is 20-25℃.

6. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The low-temperature gradient drying process is divided into three stages: the first stage is at 55℃ for 4 hours, the second stage is at 45℃ for 6 hours, and the third stage is at 35℃ for 8 hours. After drying, the moisture content of the yam slices is 10-12%.

7. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The compound enzymatic hydrolysis step is as follows: After pulverizing the dried yam slices, add purified water at a material-to-liquid ratio of 1:8, adjust the pH to 5.5-6.0, add 0.2% α-amylase and 0.15% pectinase by weight of the dried yam powder, and enzymatically hydrolyze at 50-55℃ for 90-120 minutes. After enzymatic hydrolysis, raise the temperature to 90℃ for 10 minutes to inactivate the enzyme.

8. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The high-pressure homogenization parameters are: Homogenization pressure 28–32 MPa, temperature 50–55 °C, homogenization twice; The spray drying parameters are: inlet air temperature 165-175℃, outlet air temperature 75-80℃, and feed flow rate 15-20mL / min.

9. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The vacuum freeze-drying parameters are as follows: Cold trap temperature -45~-50℃, vacuum degree 10~20Pa, drying time 20~24h, moisture content of freeze-dried material ≤5%.

10. The method for preparing a nutritional powder containing iron yam, sheep colostrum, and β-glucan according to claim 4, characterized in that, The rotation speed of the three-dimensional motion mixer is 15-20 r / min, and the material temperature is controlled at 20-25℃ during the mixing process.

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