Formula of walnut milk with homology of medicine and food and efficacy of maintaining beauty and keeping young and preparation technology of walnut milk

Abstract

The invention relates to the technical field of functional food preparation, and discloses a formula of medicinal and edible walnut milk with beauty maintaining and young keeping effects and a preparation technology of the medicinal and edible walnut milk with beauty maintaining and young keeping effects. The part A is walnut milk base liquid, and the part B is functional composite particles and is mixed with the part A during use. The preparation method of the functional composite particles comprises the following steps: placing matrix powder in a bottom spraying type fluidized bed; the preparation method comprises the following steps: spraying an adhesive solution by adopting ultrasonic atomization, sequentially adding core powder containing collagen peptide, glutathione and the like and outer-layer powder at the same time, and carrying out layer-by-layer coating and low-temperature drying. The composite particles prepared through the method are compact in structure and good in instant solubility, and the problems that traditional powder is prone to caking and poor in taste are solved; a multi-layer coating structure is combined with a low-temperature process, so that the activity of core functional components is effectively protected, bad flavor is covered, and the final product has the effects of maintaining beauty and keeping young.

Description

Technical Field

[0001] The present invention relates to the technical field of functional food preparation, in particular to a formula of walnut milk with medicinal and edible properties and beauty-enhancing effects and a preparation process thereof. Background Art

[0002] As consumers increasingly prioritize health and quality of life, medicinal and edible products that combine basic nutrition with specific functionalities are gaining increasing market favor. Walnut milk, as a nutritious plant-based protein beverage, already enjoys a strong consumer base. In this context, developing an instant solid beverage that can be enjoyed alongside walnut milk and boasts beauty-enhancing properties by adding appropriate functional ingredients aligns with current trends in the broader health industry.

[0003] Currently, the technologies for preparing these functional solid beverages primarily include physical dry mixing or traditional granulation processes. Physical dry mixing involves mechanically blending all powdered raw materials and auxiliary ingredients, such as collagen peptides and plant extracts, directly into a mixing device. Traditional granulation techniques, such as wet granulation, typically involve wetting the mixed powders with a binder to create a soft material. This is then granulated by extrusion or spheronization, followed by high-temperature drying to obtain the finished product.

[0004] However, the above-mentioned prior art has obvious technical defects in practical application. The powder prepared by physical mixing has poor fluidity and dispersibility due to the differences in the physical properties of the components. It is difficult to dissolve quickly during preparation and is prone to agglomeration, which seriously affects the taste of the final product. At the same time, many biologically active functional ingredients are directly exposed in such processes, or their chemical structure is easily destroyed during the high-temperature drying process of traditional granulation, resulting in unstable functional ingredients of the product. In addition, the inherent unpleasant flavor of some core functional raw materials has not been effectively treated, which directly reduces the sensory acceptance of the final product.

[0005] Therefore, the present invention proposes a formula of walnut milk with medicinal and edible properties and a preparation process thereof, to solve the deficiencies of the prior art. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a walnut milk formula with medicinal and edible properties and a preparation process thereof, which mainly solves the technical problems caused by the use of traditional physical mixing or high-temperature granulation methods, such as poor solubility of composite powder, easy agglomeration, low stability of core functional ingredients, and difficulty in concealing the unpleasant flavor of special raw materials, which affects the sensory quality of the final product.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The first aspect of the present invention provides a formula of walnut milk with medicinal and edible properties and beauty-enhancing effects.

[0009] The formula consists of Part A and Part B. Part A is a walnut milk base liquid, and Part B is a functional composite particle. When using, mix Part B with Part A.

[0010] The walnut milk base liquid comprises the following components in parts by mass: 10 to 20 parts of walnut powder and 80 to 90 parts of water.

[0011] The functional composite particles are composed of matrix powder, core powder, outer layer powder and activated powder. This structural design aims to achieve effective protection and synergistic effects of different functional components through specific spatial distribution.

[0012] Matrix powder: the skeleton structure of the particles.

[0013] Core powder: Contains the core functional ingredients in the formula that need to be protected most.

[0014] Outer layer powder: coated on the outer layer of the particles, providing supplementary functions and further enhancing the physical stability of the particles.

[0015] Activated powder: plays a key role in the preparation process and ultimately becomes one of the components of the particles.

[0016] In a specific embodiment, the core powder comprises the following components by weight: 2-5 parts glutathione; 2-5 parts Cistanche deserticola powder; 0.01-0.1 parts niacinamide; and 1-3 parts oligofructose. The glutathione is reduced glutathione to ensure its biological activity.

[0017] In a specific embodiment, the matrix powder is collagen peptide, the mass fraction thereof is 30 to 40 parts, and the molecular weight of the collagen peptide is in the range of 500 to 2000 Da.

[0018] In a specific embodiment, the outer layer powder includes the following components in parts by mass: 20-30 parts of white kidney bean powder; 15-20 parts of longan powder; 15-20 parts of red date powder; and 0.1-0.5 parts of sodium hyaluronate.

[0019] In a specific embodiment, the activated powder is acerola cherry powder, and its mass fraction is 2 to 5 parts.

[0020] A second aspect of the present invention provides a method for preparing the aforementioned functional composite particles. The method comprises the following steps:

[0021] S1. Raw material pretreatment: all raw materials used to prepare the matrix powder, core powder, outer layer powder and activated powder are sterilized and sieved respectively.

[0022] S2. Group preparation:

[0023] (a) mixing glutathione, Cistanche deserticola powder, niacinamide and oligofructose according to the mass fractions described in the first aspect to obtain a core powder;

[0024] (b) mixing white kidney bean powder, longan powder, red date powder and sodium hyaluronate in the mass fractions described in the first aspect to obtain an outer layer powder;

[0025] (b) Acerola cherry powder as an activated powder is dispersed in a solvent to obtain an activated spray.

[0026] S3. Fusion granulation: The collagen peptide as the matrix powder is placed in a fluidized bed and fluidized under the condition of establishing an ultrasonic sound field; the activation spray is sprayed in through an ultrasonic atomizing nozzle to activate the surface of the collagen peptide, and then the core powder and the outer layer powder are added in sequence for coating and fusion to form composite particles.

[0027] S4. Finished product: The composite particles are dried, and then subjected to final screening and metal detection, and packaged in multi-layer aluminum foil bags under dry conditions to obtain finished functional composite particles.

[0028] The core innovation of the method of the present invention lies in the fusion granulation process of step S3. This process utilizes the ultrasound-assisted eutectic phenomenon to achieve powder coating at low temperature. Specifically, acerola cherry powder (rich in natural organic acids, polyphenols and small molecule sugars) is dispersed in a solvent to form an activated spray, which is evenly sprayed onto the surface of the collagen peptide particles in a fluidized state in the form of extremely fine droplets through an ultrasonic atomization nozzle. Under the action of the mechanical energy provided by the ultrasonic sound field, the specific components in the acerola cherry powder interact with the functional groups on the surface of the collagen peptide to form a low-fluidity and high-viscosity eutectic quasi-liquid layer on the surface of the collagen peptide particles at a temperature far below the melting point of each component (for example, 40-50°C). This quasi-liquid layer acts as a low-temperature liquid adhesive, which can effectively adhere to the core powder added subsequently. After the core powder is completely adhered, the outer layer powder is added to complete the final coating of the core powder, forming composite particles with a clear multilayer structure. The entire process is completed at low temperature, avoiding the degradation of heat-sensitive components. The presence of the ultrasonic sound field ensures that the collagen peptide particles are evenly dispersed in the fluidized bed, prevents the formation of disordered agglomerates, and ensures the uniformity of the particle size of the final particles.

[0029] In a specific embodiment, the sterilization in step S1 is ultraviolet sterilization or ozone sterilization, and the sterilization time is 30 minutes; the screening is through a 60-mesh sieve.

[0030] In a specific embodiment, the solvent in step S2(b) is a mixed solvent of purified water and ethanol.

[0031] In a specific embodiment, the frequency of the ultrasonic sound field in step S3 is 20-40 kHz, and the inlet air temperature of the fluidization is 40-50°C.

[0032] In a specific embodiment, the drying temperature in step S4 is 45-55° C., and the final screening is to pass through a 60-mesh sieve.

[0033] The present invention provides a formula of walnut milk that is both medicinal and edible and has the effect of beautifying and nourishing the skin, and a preparation process thereof. It has the following beneficial effects:

[0034] 1. The present invention utilizes a preparation method that combines ultrasonic atomization technology with a bottom-spray fluidized bed, enabling the powders of each component to be combined in an orderly layer-by-layer manner. The composite particles formed by this method have a dense structure and regular morphology, thus possessing specific fluidity and dispersibility. When added to a liquid matrix such as walnut milk, they can achieve rapid dispersion and dissolution, avoiding the common agglomeration problem of ordinary mixed powders, improving the dissolution properties of the final functional beverage and the uniformity and smoothness of the taste, and laying a physical foundation for providing beauty products with excellent user experience.

[0035] 2. This invention utilizes a specific layer-by-layer coating process to embed core cosmetic ingredients—collagen peptides, sodium hyaluronate, glutathione, niacinamide, and acerola cherry powder—into the pellets. This multilayered structure, combined with the low-temperature preparation and drying process, effectively shields the core materials from external moisture, heat, and oxygen, preventing degradation and loss of the active ingredients during processing and storage. This ensures the stability of each functional ingredient and provides technical support for its intended cosmetic benefits.

[0036] 3. The present invention utilizes a core functional ingredient (such as glutathione) with a unique flavor to be coated in the center, masking its flavor with an outer layer of food ingredients. This structural design effectively masks the unpleasant odor and taste of the core ingredient, ensuring that it does not affect the overall sensory properties of the product after dissolving in the walnut milk base liquid. The resulting walnut milk, a medicinal and edible product with beauty and skincare benefits, has a natural flavor, resolving the technical issue of reduced sensory quality of the final product caused by the addition of specific functional ingredients and improving product acceptance. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The figure is a flow chart for preparing the functional composite particles of the present invention. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] The sources and specifications of the main raw materials and reagents used in the following examples and comparative examples are as follows. Reagents not specifically specified are all commercially available products of analytical grade or higher.

[0040] Glutathione (reduced), CAS: 70-18-8.

[0041] Nicotinamide, CAS: 98-92-0.

[0042] Fructooligosaccharides, CAS: 308066-66-2.

[0043] Collagen peptide, collagen peptide is a small molecule active peptide with a molecular weight of 2000-3000 Daltons.

[0044] Sodium hyaluronate, CAS: 9067-32-7.

[0045] Ethanol, CAS: 64-17-5.

[0046] Example 1

[0047] (1) Formulation: The functional composite particles prepared in this example have the following weight parts:

[0048] Matrix powder: collagen peptide, 35 parts.

[0049] The core powder is composed of the following components: 3.5 parts of glutathione, 3.5 parts of Cistanche deserticola powder, 0.05 parts of niacinamide, and 2.0 parts of oligofructose.

[0050] The outer layer powder is composed of the following components: 25 parts of white kidney bean powder, 17.5 parts of longan powder, 17.5 parts of red date powder, and 0.3 parts of sodium hyaluronate.

[0051] Activated powder: acerola cherry powder, 3.5 parts.

[0052] (2) Preparation method: S1. Raw material pretreatment: All powdered raw materials except the solvent in the above formula are placed in a clean area, sterilized under ultraviolet light for 30 minutes, and then passed through a 60-mesh sieve for standby use.

[0053] S2. Group preparation:

[0054] (a) Preparation of core powder: 3.5 parts of glutathione, 3.5 parts of Cistanche deserticola powder, 0.05 parts of niacinamide and 2.0 parts of oligofructose were added to a V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform core powder.

[0055] (b) Preparation of outer layer powder: 25 parts of white kidney bean powder, 17.5 parts of longan powder, 17.5 parts of red date powder and 0.3 parts of sodium hyaluronate were added to another V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform outer layer powder.

[0056] (c) Preparation of activation spray: 3.5 parts of acerola cherry powder were weighed and dispersed in a mixed solvent consisting of 90 mL of purified water and 10 mL of ethanol. The mixture was magnetically stirred for 30 minutes until a uniform suspension was formed to obtain an activation spray.

[0057] S3, fusion granulation: 35 parts of collagen peptides are placed in a bottom-spray fluidized bed. Set the inlet air temperature of the fluidized bed to 45°C and start fluidization. Turn on the ultrasonic generator to establish an ultrasonic sound field with a frequency of 30kHz in the fluidized bed. Through the ultrasonic atomizing nozzle, the activation spray prepared in step (c) is sprayed in at a rate of 5mL / min. After the activation spray is sprayed, the core powder prepared in step (a) is immediately added to the fluidized bed through the powder feeder for coating for 5 minutes. Subsequently, the outer layer powder prepared in step (b) is added to the fluidized bed for coating for 10 minutes to form composite particles.

[0058] S4, Finishing: Stop feeding, adjust the fluidized bed inlet air temperature to 50°C, and continue fluidized drying for 30 minutes until the moisture content of the composite particles is less than 5%. The dried composite particles are cooled to room temperature, sieved through a 60-mesh sieve, and metal tested. Qualified finished particles are vacuum-packaged in multi-layer aluminum foil bags in an environment with a relative humidity below 40%, yielding the finished functional composite particles (A1).

[0059] Example 2

[0060] (1) Formulation: The functional composite particles prepared in this example have the following mass fractions:

[0061] Matrix powder: collagen peptide, 30 parts.

[0062] The core powder is composed of the following components: 2 parts of glutathione, 5 parts of Cistanche deserticola powder, 0.1 parts of niacinamide, and 1 part of oligofructose.

[0063] The outer layer powder is composed of the following components: 20 parts of white kidney bean powder, 20 parts of longan powder, 15 parts of red date powder, and 0.5 parts of sodium hyaluronate.

[0064] Activated powder: Acerola powder, 2 parts.

[0065] (2) Preparation method: S1. Raw material pretreatment: All powdered raw materials except the solvent in the above formula are placed in a clean area, sterilized under ultraviolet light for 30 minutes, and then passed through a 60-mesh sieve for standby use.

[0066] S2. Group preparation:

[0067] (a) Preparation of core powder: 2 parts of glutathione, 5 parts of Cistanche deserticola powder, 0.1 parts of nicotinamide and 1 part of oligofructose were added to a V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform core powder.

[0068] (b) Preparation of outer layer powder: 20 parts of white kidney bean powder, 20 parts of longan powder, 15 parts of red date powder and 0.5 parts of sodium hyaluronate were placed in another V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform outer layer powder.

[0069] (c) Preparation of activation spray: 2 parts of acerola cherry powder were weighed and dispersed in a mixed solvent consisting of 90 mL of purified water and 10 mL of ethanol. The mixture was magnetically stirred for 30 minutes until a uniform suspension was formed to obtain an activation spray.

[0070] S3, fusion granulation: 30 parts of collagen peptides are placed in a bottom-spray fluidized bed. Set the air inlet temperature of the fluidized bed to 40°C and start fluidization. Turn on the ultrasonic generator to establish an ultrasonic sound field with a frequency of 20kHz in the fluidized bed. Through the ultrasonic atomizing nozzle, the activation spray prepared in step (c) is sprayed at a uniform speed at a rate of 5mL / min. After the activation spray is sprayed, the core powder prepared in step (a) is immediately added to the fluidized bed through the powder feeder for coating for 5 minutes. Subsequently, the outer layer powder prepared in step (b) is added to the fluidized bed for coating for 10 minutes to form composite particles.

[0071] S4, Finishing: Stop feeding, adjust the fluidized bed inlet air temperature to 45°C, and continue fluidized drying for 40 minutes until the moisture content of the composite particles is less than 5%. The dried composite particles are cooled to room temperature, passed through a 60-mesh sieve for final screening, and subjected to metal detection. Qualified finished particles are vacuum-packaged in multi-layer aluminum foil bags at a relative humidity below 40%, yielding the finished functional composite particles (A2).

[0072] Example 3

[0073] (1) Formulation: The functional composite particles prepared in this example have the following weight parts:

[0074] Matrix powder: collagen peptide, 40 parts.

[0075] The core powder is composed of the following components: 5 parts of glutathione, 2 parts of Cistanche deserticola powder, 0.01 parts of niacinamide, and 3 parts of oligofructose.

[0076] The outer layer powder is composed of the following components: 30 parts of white kidney bean powder, 15 parts of longan powder, 20 parts of red date powder, and 0.1 part of sodium hyaluronate.

[0077] Activated powder: acerola powder, 5 parts.

[0078] (2) Preparation method: S1. Raw material pretreatment: All powdered raw materials except the solvent in the above formula are placed in a clean area, sterilized with ozone for 30 minutes, and then passed through a 60-mesh sieve for standby use.

[0079] S2. Group preparation:

[0080] (a) Preparation of core powder: 5 parts of glutathione, 2 parts of Cistanche deserticola powder, 0.01 parts of nicotinamide and 3 parts of oligofructose were added to a V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform core powder.

[0081] (b) Preparation of outer layer powder: 30 parts of white kidney bean powder, 15 parts of longan powder, 20 parts of red date powder and 0.1 part of sodium hyaluronate were added to another V-type mixer and mixed at room temperature for 20 minutes to obtain a uniform outer layer powder.

[0082] (c) Preparation of activation spray: 5 parts of acerola cherry powder were weighed and dispersed in a mixed solvent consisting of 90 mL of purified water and 10 mL of ethanol. The mixture was magnetically stirred for 30 minutes until a uniform suspension was formed to obtain an activation spray.

[0083] S3, fusion granulation: Place 40 parts of collagen peptides in a bottom-spray fluidized bed. Set the inlet air temperature of the fluidized bed to 50°C and start fluidization. Turn on the ultrasonic generator to establish an ultrasonic sound field with a frequency of 40kHz in the fluidized bed. Through the ultrasonic atomizing nozzle, the activated spray prepared in step (c) is sprayed at a uniform speed at a rate of 5mL / min. After the activated spray is sprayed, the core powder prepared in step (a) is immediately added to the fluidized bed through the powder feeder for coating for 5 minutes. Subsequently, the outer layer powder prepared in step (b) is added to the fluidized bed for coating for 10 minutes to form composite particles.

[0084] S4, Finishing: Stop feeding, adjust the fluidized bed air inlet temperature to 55°C, and continue fluidized drying for 30 minutes until the moisture content of the composite particles is below 5%. The dried composite particles are cooled to room temperature, passed through a 60-mesh sieve for final screening, and subjected to metal detection. Qualified finished particles are vacuum-packaged in multi-layer aluminum foil bags in an environment with a relative humidity below 40%, yielding the finished functional composite particles (A3).

[0085] Preparation of walnut milk finished product with medicinal and edible properties according to the embodiment

[0086] (1) Preparation of Part A (Walnut Milk Base Liquid): Weigh 10-20 parts of walnut powder and add it to 80-90 parts of purified water at a temperature of 50-60°C. Mix and stir to make it evenly dispersed to obtain one part of walnut milk base liquid.

[0087] (2) Final preparation of walnut milk with medicinal and edible properties for beauty and skin care:

[0088] Product 1: Take one portion of the functional composite particles (A1) prepared in Example 1 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (d1).

[0089] Product 2: Take one portion of the functional composite particles (A2) prepared in Example 2 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (d2).

[0090] Product 3: Take one portion of the functional composite particles (A3) prepared in Example 3 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (d3).

[0091] Comparative Example 1: Compared to Example 1, this example differs in that the S3 fusion granulation and S4 drying steps of the present invention are not used. Instead, all powder components specified in the formulation of Example 1 (matrix powder, core powder, outer layer powder, and activated powder) are placed in a V-type mixer and physically dry-mixed for 20 minutes. The resulting mixed powder is designated (D1).

[0092] Comparative Example 2: Compared to Example 1, this example differs in that, during the S3 fusion granulation step, the ultrasonic generator was not activated, i.e., no ultrasonic field was established within the fluidized bed. Conventional fluidized bed spray granulation was performed using only atomized activation spray. All other formulations, conditions, and steps were identical to those of Example 1. The resulting granules were designated (D2).

[0093] Comparative Example 3: Compared to Example 1, this example differs in that a conventional high-temperature wet granulation process is employed. Specifically, all powder components in the formulation of Example 1 were premixed uniformly. A solvent equivalent to that in Example 1 S2(c) (90 mL of purified water and 10 mL of ethanol) was used as a wetting agent. A soft base was prepared in a trough mixer. Wet granules were formed using an oscillating granulator. Finally, the granules were dried in a 75°C forced air oven to a moisture content of less than 5%. All other formulations were identical to those in Example 1. The resulting granules were designated (D3).

[0094] Preparation of walnut milk finished product with medicinal and edible properties according to comparative example

[0095] (1) Preparation of Part A (Walnut Milk Base): Weigh 10-20 parts of walnut powder and add it to 80-90 parts of purified water at a temperature of 50-60°C. Mix and stir to make it evenly dispersed to obtain one part of walnut milk base.

[0096] (2) Final preparation of walnut milk with medicinal and edible properties for beauty and skin care:

[0097] Comparative Example Product 1: Take one portion of the mixed powder (D1) prepared in Comparative Example 1 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (E1).

[0098] Comparative Example Product 2: Take one portion of the particles (D2) prepared in Comparative Example 2 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (E2).

[0099] Comparative Example Product 3: Take one portion of the particles (D3) prepared in Comparative Example 3 (for example, 10 portions packaged according to a preset single dosage), add it to one portion of the walnut milk base liquid prepared in step (1), and stir until completely dissolved or evenly dispersed to obtain the final product (E3).

[0100] Test Example 1: Evaluation of Particle / Powder Physical Properties

[0101] Test method: The particles (A1) prepared in Example 1 and the particles (D1, D2, D3) prepared in Comparative Examples 1-3 were tested for physical properties.

[0102] Angle of repose determination (fluidity): Use the fixed funnel method. Take 20 samples to be tested and let them fall freely through a glass funnel with a bottom opening diameter of 10 mm and a height of 80 mm from the bottom plate to form a conical accumulation on the bottom plate. Use a vernier caliper to measure the height (h) and bottom diameter (D) of the accumulation. Calculate the angle of repose α by the formula tan (α) = 2h / D. Repeat the measurement three times for each sample and take the average value. If the sample cannot pass through the funnel or cannot form a stable cone, it is recorded as unmeasurable.

[0103] Dissolution Time Determination: Add 150 mL of purified water at 50°C to a 250 mL beaker. Start a magnetic stirrer at 500 rpm. Pour 10 aliquots of the sample to be tested into the beaker at once and start timing. Visually observe and record the time until no solid particles or lumps are visible in the beaker. Repeat the measurement three times for each sample and calculate the average value.

[0104] Determination of moisture absorption weight gain rate: Take a clean, dry Petri dish, weigh it accurately and record it as m1. Spread about 2 samples to be tested in the Petri dish, accurately weigh the total weight of the sample and the Petri dish, record it as m2. Place the Petri dish containing the sample in a closed desiccator with a saturated sodium bromide solution at the bottom. The environment can provide 75% relative humidity (RH) at 25°C. After leaving it under this condition for 24 hours, take it out and quickly weigh its total weight, record it as m3. Calculate the moisture absorption weight gain rate using the formula [(m3-m2) / (m2-m1)]×100. Repeat the measurement three times for each sample and take the average value.

[0105] Test results: The physical property test data of each sample are summarized in Table 1.

[0106] Table 1: Physical property test results

[0107]

[0108] Result analysis:

[0109] As can be seen from the data in Table 1, the angle of repose of particles A1 prepared by this technical solution is 32.7°, and the moisture absorption weight gain is 1.9%. These data indicate that the particles have specific fluidity and low hygroscopicity. This structural characteristic stems from its preparation process: in a fluidized state, tiny droplets formed by ultrasonic atomization wet the surface of the matrix powder and combine layer by layer with the subsequently added core powder and outer layer powder. The high-frequency oscillation effect generated by the ultrasonic sound field promotes the densification and sphericalization of the powder particles, ultimately forming composite particles with a regular structure, a relatively smooth surface, and a narrow particle size distribution.

[0110] In contrast, Product D1 from Comparative Example 1 is a physical mixture of various powders. Its components vary in particle size, density, and morphology, resulting in complex interparticle interactions and an inability to achieve stable flow, making the angle of repose unmeasurable. Furthermore, its large surface area is directly exposed to the environment, leading to a moisture absorption weight gain of 8.7%. Product D2 from Comparative Example 2, in the absence of an ultrasonic field, produces large and uneven droplets through conventional atomization. This results in a loose particle structure, irregular morphology, and a wide particle size distribution. Its angle of repose increases to 39.1°, and its hygroscopicity is also higher than that of Product A1.

[0111] Product D3 from Comparative Example 3, produced through traditional wet granulation and high-temperature drying, formed irregular, hard particles with a rough surface and pores. This resulted in flowability parameters (angle of repose 46.2°) and hygroscopicity parameters (moisture absorption weight gain 6.5%) inferior to those of A1. This technical solution directly produces composite particles with the aforementioned specific physical properties by combining ultrasonic atomization, multi-layer powder coating in a fluidized bed, and low-temperature drying. The particle structure formed by this preparation method is the direct cause of the physical property parameters shown in Table 1.

[0112] Test Example 2: Stability evaluation of core active ingredients

[0113] Test method: To determine the protective effect of each sample on the core active ingredient, high performance liquid chromatography (HPLC) was used to determine the glutathione content in the samples, and an accelerated stability test was performed.

[0114] Chromatographic conditions: An Agilent 1260 Infinity II HPLC system was used. The chromatographic column was a ZORBAX EclipsePlus C18 column (4.6 × 250 mm, 5 μm). The mobile phase consisted of 0.1% aqueous phosphoric acid (pH adjusted to 2.5 with phosphoric acid) and methanol, eluted isocratically at a ratio of 95:5 (v / v). The flow rate was set at 1.0 mL / min, the column temperature was maintained at 30°C, the detection wavelength was set at 210 nm, and the injection volume was 20 μL.

[0115] Preparation of standard curve: Accurately weigh the glutathione standard and prepare a series of standard solutions with a concentration gradient (5, 10, 25, 50, 100 μg / mL) with purified water. Inject and analyze according to the above chromatographic conditions, and draw a standard curve based on peak area versus concentration.

[0116] Sample Preparation and Measurement: Accurately weigh approximately 0.5 aliquots of the sample to be tested (A1, D1, D2, D3) into a 50 mL volumetric flask. Add purified water and sonicate for 15 minutes to completely dissolve. Dose to volume with purified water and shake well. Filter the supernatant through a 0.45 μm microporous membrane. The filtrate is used as the test solution for analysis. Calculate the glutathione content in the sample using the standard curve.

[0117] Accelerated stability test: Take approximately 5 aliquots of each sample (A1, D1, D2, D3) and spread them evenly in a weighing bottle without a cover. Place the weighing bottle in a constant temperature and humidity chamber set at 40°C and 75% relative humidity (RH). Take samples on day 0 and day 30, and determine the glutathione content according to step 3. Record these as the initial and final contents, respectively. Calculate the preservation rate using the formula [(final content) / (initial content) × 100%].

[0118] Test results: The stability test data of glutathione in each sample are summarized in Table 2.

[0119] Table 2: Glutathione stability test results

[0120]

[0121] Result analysis:

[0122] The data in Table 2 show that after 30 days of storage under accelerated conditions of 40°C and 75% RH, the glutathione retention rate in Sample A1 was 95.4%. This result is directly related to the preparation method of the particles and the final physical structure. In this technical solution, glutathione, which is sensitive to heat and oxidation, is coated in the inner core layer of the particles. The outer layers are respectively a matrix powder layer and an outer powder layer. This layer-by-layer coating structure forms a physical barrier, blocking direct contact between the core component and moisture and oxygen in the external environment. At the same time, the temperature of the entire fusion granulation and drying process is controlled within the range of 40-55°C. This temperature condition avoids significant thermal degradation of glutathione.

[0123] Product D1 from Comparative Example 1, a physically mixed powder, had its components evenly dispersed but lacked a coating structure. Direct exposure to the environment led to significant degradation of glutathione under accelerated conditions, resulting in a preservation rate of only 61.9%. Product D2 from Comparative Example 2, although also granulated using a fluidized bed, lacked the effect of an ultrasonic field, resulting in looser granules. The coating layer was insufficiently dense, providing limited physical isolation of the core components. Its preservation rate was 83.9%, lower than that of Sample A1.

[0124] Product D3 from Comparative Example 3 had the lowest preservation rate, at 46.0%. This is because the conventional wet granulation method uses an oven temperature of 75°C during the subsequent drying step. This high temperature directly destroys the chemical structure of glutathione, leading to a significant decrease in its content. Overall, the present technical solution, through the combination of a specific multi-layer coating structure and a low-temperature preparation process, effectively protects the core active ingredient during storage and maintains its stability.

[0125] Test Example 3: Sensory evaluation of final product

[0126] Test method: To evaluate the sensory properties of the final product, the particles prepared in Example 1 and Comparative Examples 1-3 (A1, D1, D2, D3) were subjected to sensory evaluation tests.

[0127] Evaluation team: consists of 10 evaluators who have received basic training in sensory evaluation.

[0128] Sample preparation:

[0129] (a) Preparation of walnut milk base liquid: 15 parts of walnut powder were weighed and added to 85 mL of purified water at 55° C. The mixture was stirred at 2000 rpm using a high-speed stirrer for 1 minute to prepare a walnut milk base liquid.

[0130] (b) Preparation of the final product: 10 portions of the particle samples to be tested (A1, D1, D2, D3) were added to one portion of the walnut milk base solution prepared above, and stirred at 500 rpm for 30 seconds at room temperature.

[0131] (c) Sample presentation: Four samples of the final product (d11, E11, E22, and E33) were placed in white ceramic cups with the same code and presented to the assessors at 45°C. The assessors performed the evaluation in separate booths and rinsed their mouths with purified water between evaluations.

[0132] Evaluation indicators and scoring criteria: Evaluators evaluate based on a 5-point scoring system based on the following four dimensions:

[0133] Appearance and state: 5 points (uniform liquid, no visible suspended matter), 4 points (basically uniform, with very small amounts of fine suspended matter), 3 points (a small amount of visible suspended matter or slight stratification), 2 points (obvious suspended matter or stratification), 1 point (large amounts of sedimentation or severe stratification).

[0134] Odor: 5 points (product has inherent aroma, no peculiar smell), 4 points (inherent aroma is dominant, with a very slight peculiar smell detectable), 3 points (inherent aroma and peculiar smell coexist), 2 points (obvious peculiar smell), 1 point (strong and unpleasant peculiar smell).

[0135] Texture and taste: 5 points (smooth taste, no graininess), 4 points (basically smooth, with very fine graininess detectable), 3 points (obvious graininess), 2 points (rough graininess), 1 point (large amount of undissolved particles, rough taste).

[0136] Comprehensive evaluation: A comprehensive judgment and score is made based on the overall perception of the above three indicators.

[0137] Test results: The average sensory evaluation scores of the final products are summarized in Table 3.

[0138] Table 3: Sensory evaluation test results

[0139]

[0140] Result analysis:

[0141] The data in Table 3 show that the final product, d11, scored above 4.8 in all four dimensions: appearance, odor, texture, and overall evaluation. This result is related to the physical structure of the functional composite particles, c1, that comprise d11. Through layer-by-layer coating, the c1 particles enclose core components, such as glutathione and Cistanche deserticola powder, which have a distinctive aroma, within the particles, preventing them from directly releasing unpleasant flavors upon dissolution in the base liquid. Furthermore, as demonstrated in Test Example 1, the rapid solubility of the c1 particles enables them to disperse rapidly in liquids, forming a uniform liquid phase, resulting in a smooth taste and a uniform appearance.

[0142] Comparative example E11 received low sensory scores across all categories, with an odor score of only 2.2. This is because its precursor, d11, is a physical mixture of multiple powders, leaving all components directly exposed. After dissolution, components with unpleasant flavors dissolve directly, while differences in the dissolution rates of different powders lead to suspension and precipitation, resulting in a rough, granular feel. Comparative example E22's scores fell between those of d11 and E11. Although its precursor, D2, was granulated, the resulting particle coating structure was not dense enough, incompletely masking the unpleasant flavor of the core component, and perceptible particles remained after dissolution.

[0143] Comparative product E33 also received low sensory scores, with odor and taste scores of 2.9 and 3.1, respectively. Its precursor, D3, utilizes a traditional high-temperature drying process. The material is heated at 75°C for an extended period, causing thermal changes in some components and producing a burnt odor, which is clearly perceptible in the final product, E33. Furthermore, the hard particles formed at high temperatures have poor solubility, resulting in a noticeably rough texture in the final product. Therefore, this technical solution, through the combination of a multi-layer coating structure and a low-temperature preparation method, addresses the sensory unacceptability issue that may arise when specific functional raw materials are introduced into the final product.

[0144] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A formula of walnut milk with medicinal and edible properties having the effect of beautifying and nourishing the skin, characterized in that: Includes Part A and Part B; Part A is a walnut milk base liquid, which includes the following components in parts by mass: Walnut powder: 10-20 parts; Water: 80-90 parts; The B part is a functional composite particle, which is mixed with the A part when used; The functional composite particles are composed of matrix powder, core powder, outer layer powder and activated powder; The core powder comprises the following components in parts by mass: Glutathione: 2-5 parts; Cistanche deserticola powder: 2-5 parts; Niacinamide: 0.01-0.1 parts; Fructooligosaccharides: 1-3 parts; The glutathione is reduced glutathione.

2. The walnut milk formula with the medicinal and edible properties having the beauty and skin care effects according to claim 1, characterized in that: The matrix powder is collagen peptide, the mass fraction of the collagen peptide is 30 to 40 parts, and the molecular weight range of the collagen peptide is 500-2000Da.

3. The walnut milk formula with the medicinal and edible properties having the beauty and skin care effects according to claim 1, characterized in that: The outer layer powder comprises the following components in parts by mass: White kidney bean powder: 20-30 parts; Longan powder: 15-20 parts; Red date powder: 15-20 parts; Sodium hyaluronate: 0.1-0.5 parts.

4. The walnut milk formula with the medicinal and edible properties having the beauty and skin care effects according to claim 1, characterized in that: The activated powder is acerola cherry powder, and the mass fraction of the acerola cherry powder is 2 to 5 parts.

5. A method for preparing the functional composite particles according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Sterilize and sieve the raw materials of matrix powder, core powder, outer layer powder and activated powder respectively; S2. Group preparation: (a) mixing glutathione, Cistanche deserticola powder, niacinamide and oligofructose to obtain a core powder; (b) mixing white kidney bean powder, longan powder, red date powder and sodium hyaluronate to obtain an outer layer powder; (b) dispersing acerola cherry powder as an activated powder in a solvent to obtain an activated spray; S3, placing the collagen peptide as the matrix powder in a fluidized bed for fluidization and establishing an ultrasonic sound field; The activation spray is sprayed into the surface of the collagen peptide through an ultrasonic atomizing nozzle to activate the surface of the collagen peptide, and then the core powder and the outer layer powder are added in sequence for coating and fusion to form composite particles; S4. Drying the composite particles, and then performing final screening and metal detection and packaging in multi-layer aluminum foil bags under dry conditions to obtain finished functional composite particles.

6. The method according to claim 5, characterized in that In step S1, the sterilization is ultraviolet sterilization or ozone sterilization, and the sterilization time is 30 minutes; the screening is through a 60-mesh sieve.

7. The method according to claim 5, characterized in that In step S2(b), the solvent is a mixed solvent of purified water and ethanol.

8. The method according to claim 5, characterized in that In step S3, the frequency of the ultrasonic sound field is 20-40 kHz, and the inlet air temperature of the fluidization is 40-50°C.

9. The method according to claim 5, characterized in that In step S3, the activation spray forms a low-eutectic quasi-liquid layer on the surface of the collagen peptide, which is used to adhere the core powder and the outer layer powder.

10. The method according to claim 5, characterized in that In step S4, the drying temperature is 45-55° C., and the final screening is to pass through a 60-mesh sieve.

Images