Method for determining influencing factors of milk powder properties
By combining the preparation results and bulk density of milk powder, the particulate matter detection index was determined. By using microscopic detection equipment, the problem of low efficiency in determining the influencing factors of milk powder characteristics was solved, achieving the effect of efficient identification and reduction of influencing factors, and improving the quality of milk powder.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-05-12
- Publication Date
- 2026-04-07
AI Technical Summary
In existing technologies, the determination of factors affecting the characteristics of milk powder is inefficient and cannot accurately identify specific influencing factors, resulting in the inability to reduce or eliminate the impact in a timely manner.
By combining the preparation results and macroscopic characteristics of the milk powder's bulk density, the required particulate matter testing indicators are determined. Microscopic detection is then performed using equipment such as intelligent powder testers, particle size analyzers, or scanning electron microscopes to obtain the microscopic characteristics of the milk powder, thereby accurately identifying the influencing factors.
It improves the efficiency of identifying factors affecting milk powder characteristics, enabling timely identification, reduction, or elimination of the negative impact of these factors on milk powder quality, thereby enhancing the stability and consistency of milk powder quality.
Smart Images
Figure CN117092302B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of detection technology, and in particular to a method for determining the influencing factors of milk powder characteristics. Background Technology
[0002] Currently, testing is typically conducted using only a single macroscopic characteristic of milk powder, such as its reconstitution result or bulk density, and the results are used to determine the influencing factors of milk powder characteristics. However, because milk powder characteristics are affected by the numerous and complex production processes, it is impossible to accurately identify the specific influencing factors, resulting in low efficiency and hindering the timely reduction or elimination of their impact. Summary of the Invention
[0003] This application provides a method for determining the influencing factors of milk powder characteristics, in order to solve or alleviate one or more technical problems in the prior art.
[0004] As one aspect of this application, this application provides a method for determining the influencing factors of milk powder characteristics, including:
[0005] Based on the preparation results and bulk density of the milk powder, determine the particulate matter testing indicators that need to be tested on the milk powder.
[0006] The milk powder was tested based on particulate matter detection indicators, and the test results were obtained.
[0007] Based on the test results, the factors influencing the characteristics of milk powder were determined.
[0008] In one implementation, based on the preparation result and bulk density of the milk powder, the particulate matter detection indicators that need to be tested on the milk powder are determined, including:
[0009] If the clump-free score of the prepared milk powder is lower than the score threshold and the bulk density is lower than the bulk density threshold, the particulate matter detection index is determined to be the proportion of particulate matter with the target particle size range in the milk powder.
[0010] In one implementation, the factors influencing the characteristics of milk powder are determined based on the test results, including:
[0011] If the proportion of particles with the target particle size range in the milk powder is less than the first proportion threshold, the influencing factor is determined to be that the milk concentration output from the concentration process is lower than the preset milk concentration standard.
[0012] In one implementation, based on the preparation result and bulk density of the milk powder, the particulate matter detection indicators that need to be tested on the milk powder are determined, including:
[0013] When the reconstitution result shows that the nutrients have been denatured and the bulk density is lower than the bulk density threshold, the surface morphology of the particulate matter in the milk powder is determined as the detection index.
[0014] In one embodiment, the determining method further includes:
[0015] If the viscosity of the milk powder exceeds the viscosity threshold, the mixing result is determined to be nutritional cost denaturation.
[0016] In one implementation, the factors influencing the characteristics of milk powder are determined based on the test results, including:
[0017] When cracks appear on the surface of particles in milk powder, the influencing factor is determined to be that the temperature of the spray drying process is lower than the preset temperature standard.
[0018] In one implementation, the particulate matter detection index to be tested is determined based on the preparation result and bulk density of the milk powder, including:
[0019] When the mixing result and bulk density of the milk powder meet the preset standards, the particulate matter evaluation index is determined to be the average particle size and particle size distribution.
[0020] In one implementation, the factors influencing the characteristics of milk powder are determined based on the test results, including:
[0021] If the average particle size of the milk powder is less than the particle size threshold and the proportion of particles within the target particle size range is less than the second proportion threshold, the influencing factors are determined to be that the nozzle diameter in the spray drying process is lower than the preset nozzle diameter standard and / or the spray height is lower than the preset height standard.
[0022] In one embodiment, the particulate matter detection indicators for milk powder include:
[0023] The proportion of particles with the target particle size range in milk powder is detected using an intelligent powder tester or particle size analyzer.
[0024] Alternatively, a scanning electron microscope can be used to examine the surface morphology of particulate matter in milk powder;
[0025] Alternatively, a particle size analyzer can be used to detect the particle size and particle size distribution of the milk powder.
[0026] In one embodiment, the determining method further includes:
[0027] Adjust the production parameters of the corresponding production process according to the factors that affect the characteristics of milk powder.
[0028] The embodiments of this application adopt the above-mentioned technical solution. By analyzing the mixing results and macroscopic characteristics of the milk powder's bulk density, the particulate matter detection indicators that need to be further tested for the milk powder can be determined. Then, the milk powder is tested based on the microscopic particulate matter detection indicators to obtain the test results (i.e., the microscopic characteristics of the milk powder). Based on the test results, the influencing factors of the milk powder characteristics can be accurately determined. The determination efficiency is high, which is conducive to timely reducing or eliminating the impact of influencing factors on the quality of milk powder.
[0029] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description
[0030] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.
[0031] Figure 1 A flowchart illustrating a method for determining factors influencing the characteristics of milk powder according to an embodiment of this application is shown. Detailed Implementation
[0032] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.
[0033] Figure 1 A flowchart illustrating a method for determining factors influencing the characteristics of milk powder according to an embodiment of this application is shown. Figure 1 As shown, the determination method includes:
[0034] Step S110: Based on the preparation results and bulk density of the milk powder, determine the particulate matter testing indicators that need to be tested on the milk powder.
[0035] Step S120: Test the milk powder according to the particulate matter detection index and obtain the test results;
[0036] Step S130: Based on the test results, determine the influencing factors of milk powder characteristics.
[0037] For example, the result of preparing milk powder can be obtained by mixing milk powder and water according to a preset ratio and then evaluating it using an evaluation standard. The ratio of milk powder to water can be selected and adjusted according to actual needs.
[0038] For example, the bulk density of milk powder can be measured using a vibration density meter. The measurement method involves placing a preset weight of milk powder into the measuring cylinder of the vibration density meter, vibrating the cylinder a preset number of times, and then measuring the volume of the milk powder. The preset weight can be 100g, and the preset number of vibrations can be 100. The vibration density meter offers fast measurement speed, which helps improve testing efficiency.
[0039] For example, the mixing result and bulk density of the milk powder are measured using a preset weight of milk powder as a whole, which can be considered as the macroscopic characteristics of the milk powder. These macroscopic characteristics are used to characterize the quality of the milk powder. The particulate matter detection index measures the particulate matter in the milk powder, which can be considered as its microscopic characteristics. Step S130 may include: determining the influencing factors of the macroscopic characteristics of the milk powder based on the detection results.
[0040] According to the determination method in this application embodiment, the particulate matter detection index that needs to be further tested on the milk powder can be determined by the mixing result and the macroscopic characteristics of the bulk density of the milk powder. Then, the milk powder is tested according to the microscopic particulate matter detection index to obtain the test results (i.e., the microscopic characteristics of the milk powder). Then, the influencing factors of the milk powder characteristics can be accurately determined based on the test results. The determination efficiency is high and it is beneficial to reduce or eliminate the impact of influencing factors on the quality of milk powder in a timely manner.
[0041] In one application scenario, liquid milk needs to undergo a series of processes—sterilization, mixing, concentration, spray drying, and powdering—to obtain milk powder. These processes involve factors that affect the characteristics of the milk powder. The determination method described in this application can identify the influencing factors present in specific processes.
[0042] In one implementation, based on the preparation result and bulk density of the milk powder, the particulate matter detection indicators that need to be tested on the milk powder are determined, including:
[0043] If the clump-free score of the prepared milk powder is lower than the score threshold and the bulk density is lower than the bulk density threshold, the particulate matter detection index is determined to be the proportion of particulate matter with the target particle size range in the milk powder.
[0044] For example, the clumping-free score for the milk powder preparation result ranges from 1 to 10 points, where 1 point is the lowest score and 10 points is the highest score. A higher score indicates a better clumping-free effect after the milk powder is prepared. The score threshold and bulk density threshold can be selected and adjusted according to actual needs. For example, if the score threshold is set to 10 points and the bulk density threshold is 240ml / 100g, and the clumping-free score of the milk powder preparation result is 10 points and the bulk density is 220ml / 100g, then the particulate matter detection index is determined to be the proportion of particles with the target particle size range in the milk powder. The target particle size range is 255μm to 425μm (inclusive of the endpoint value).
[0045] In one embodiment, the factors affecting the characteristics of milk powder are determined based on the test results, including: if the proportion of particles with a target particle size range in the milk powder is less than a first proportion threshold, the influencing factor is determined to be that the milk concentration output by the concentration process is lower than the preset milk concentration standard.
[0046] For example, the first percentage threshold is 61%. When the percentage of particles with a target particle size range of 255μm to 425μm in the milk powder is less than 61%, for example, when the percentage of particles with a target particle size range of 255μm to 425μm is 58.3%, the influencing factor is determined to be that the milk concentration output by the concentration process is lower than the preset milk concentration standard.
[0047] The above scheme, when the clumping score of the milk powder preparation result is lower than the score threshold and the bulk density of the milk powder is lower than the bulk density threshold, can accurately determine that the influencing factor of the milk powder characteristics is the low milk concentration output from the concentration process by utilizing the fact that the proportion of particles with the target particle size range is less than the first proportion threshold, thus improving the efficiency of determining the influencing factor.
[0048] In one embodiment, the particulate matter detection index to be tested for milk powder is determined based on the mixing result and bulk density of the milk powder, including: when the mixing result shows that the nutrients have been denatured and the bulk density is lower than the bulk density threshold, the particulate matter detection index is determined to be the surface morphology of the particulate matter in the milk powder.
[0049] For example, the result of reconstitution showing denaturation of nutrients could be protein denaturation in the milk powder, with a bulk density threshold of 240 ml / 100g. In cases where the reconstitution result shows protein denaturation and the bulk density is less than 240 ml / 100g, the particulate matter detection index is determined to be the surface morphology of the particulate matter in the milk powder.
[0050] In one embodiment, the determination method further includes: determining that the reconstitution result is a nutritional cost denaturation when the viscosity of the milk powder is higher than a viscosity threshold.
[0051] For example, the viscosity threshold range of the milk powder is 30cp to 35cp. When the milk powder has a reconstitution viscosity of 45.7cp, the reconstitution result is determined to be protein denaturation.
[0052] In one embodiment, the factors affecting the characteristics of milk powder are determined based on the test results, including: when cracks appear on the surface morphology of particles in milk powder, the influencing factor is determined to be that the temperature of the spray drying process is lower than the preset temperature standard.
[0053] For example, by identifying cracks in the surface morphology image of particles in milk powder, it can be determined whether cracks have appeared on the surface of the particles. If cracks are identified on the surface of the particles, the influencing factor is determined to be that the temperature of the spray drying process is lower than a preset temperature standard.
[0054] The above solution, when the milk powder reconstitutes with denatured nutrients and a bulk density below the bulk density threshold, can accurately determine the influencing factor as the temperature of the spray drying process being lower than the preset temperature standard by utilizing the surface morphology of cracks in the milk powder particles, thus improving the efficiency of determining the influencing factor.
[0055] In one embodiment, the particulate matter detection index to be tested is determined based on the preparation result and bulk density of the milk powder, including: when the preparation result and bulk density of the milk powder both meet the preset standards, the particulate matter evaluation index is determined to be the average particle size and particle size distribution.
[0056] For example, the preset standard for bulk density can be selected and adjusted according to actual needs. For instance, the preset standard range for bulk density can be set to 220ml / 100g to 260ml / 100g. When the milk powder reconstitution result is a clumping score equal to or greater than the score threshold and the bulk density is within the preset standard range, the particulate matter evaluation index is determined to be the average particle size and particle size distribution, so as to further detect the average particle size and particle size distribution of the particulate matter in the milk powder.
[0057] In one application scenario, milk powder includes first milk powder and second milk powder, with the factories producing the first and second milk powders located in different geographical locations. When the reconstitution results and bulk density of the milk powder meet preset standards, determining the average particle size and particle size distribution as particulate matter evaluation indicators facilitates the assessment of particle size uniformity using these indicators.
[0058] In one embodiment, based on the test results, the influencing factors of milk powder characteristics are determined, including: when the average particle size of the milk powder is less than the particle size threshold and the proportion of particles in the target particle size range is less than the second proportion threshold, the influencing factors are determined to be that the nozzle diameter in the spray drying process is lower than the preset nozzle diameter standard and / or the spray height is lower than the preset height standard.
[0059] For example, the particle size threshold and the second proportion threshold can be selected and adjusted according to actual needs. For instance, taking infant formula as an example, if the average particle size of the particles in the formula is less than 200 μm and the proportion of particles with a target particle size range of 255 μm to 425 μm is less than 62%, the influencing factors are determined to be that the nozzle diameter in the spray drying process is lower than the preset nozzle diameter standard and / or the spray height is lower than the preset height standard.
[0060] In one optional implementation, the particulate matter detection indicators for milk powder include:
[0061] The proportion of particles with the target particle size range in milk powder is detected using an intelligent powder tester or particle size analyzer.
[0062] Alternatively, a scanning electron microscope can be used to detect the surface morphology of milk powder particles; wherein, a scanning electron microscope can obtain surface morphology images of milk powder particles at magnification of 2000x, 3000x and 5000x respectively.
[0063] Alternatively, a particle size analyzer can be used to detect the particle size and particle size distribution of the milk powder; wherein, the particle size analyzer includes, but is not limited to, the Malvern particle size analyzer.
[0064] In one embodiment, the determining method further includes: adjusting the production parameters of the corresponding production process according to the influencing factors of milk powder characteristics.
[0065] For example, if it is determined that the influencing factor is that the milk concentration output by the concentration process is lower than the preset milk concentration standard, the water evaporation ratio of the evaporator for liquid milk is increased. Here, there is a direct proportional relationship between milk concentration and the bulk density of milk powder, that is, the bulk density of milk powder increases with the increase of milk concentration. Therefore, increasing the milk concentration output by the concentration process can reduce or even eliminate its influence on the bulk density of milk powder.
[0066] For example, by increasing the milk concentration to 51% and producing for 30 minutes, the bulk density and the proportion of particles with the target particle size range of the milk powder are tested. It can be determined that the bulk density is between 230ml / 100g and 236ml / 100g (including the endpoint value), and the proportion of particles with the target particle size is 62.4%. This makes the bulk density of the milk powder close to the bulk density threshold, and the proportion of particles with the target particle size is higher than the first proportion threshold, thus improving the quality of the milk powder.
[0067] For example, if the influencing factor is determined to be that the temperature of the spray drying process is lower than the preset temperature standard, the drying exhaust temperature of the drying oven in the spray drying process can be increased. For example, if the preset temperature standard is 85℃~90℃, and the temperature of the spray drying process is lower than 85℃, increasing the drying exhaust temperature of the drying oven can bring the temperature of the spray drying process to meet the preset temperature standard requirements, thereby reducing or even eliminating its impact on the characteristics of the milk powder.
[0068] For example, if the influencing factors are determined to be that the nozzle diameter in the spray drying process is lower than the preset orifice diameter standard and / or the spray height is lower than the preset height standard, the impact on the milk powder characteristics can be reduced or even eliminated by replacing the nozzle with a nozzle with a larger orifice diameter and / or increasing the spray height of the spray gun. This helps ensure the uniformity of particle size of different milk powders and improves the stability of milk powder quality. Conversely, if the influencing factors are determined to be that the nozzle diameter in the spray drying process is higher than the preset orifice diameter standard and / or the spray height is higher than the preset height standard, the impact on the milk powder characteristics can be reduced or even eliminated by replacing the nozzle with a nozzle with a smaller orifice diameter and / or decreasing the spray height of the spray gun.
[0069] In the description of this specification, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0071] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0072] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0073] The foregoing disclosure provides many different implementations or examples for carrying out different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.
[0074] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A method for determining the influencing factors of milk powder characteristics, characterized in that, include: Based on the preparation results and bulk density of the milk powder, determine the particulate matter detection indicators that need to be tested on the milk powder. The milk powder was tested according to the particulate matter detection index, and the test results were obtained. Based on the test results, the influencing factors of the milk powder characteristics were determined; Based on the preparation results and bulk density of the milk powder, the particulate matter testing indicators that need to be tested for the milk powder are determined, including: If the clump-free score of the prepared milk powder is lower than the score threshold and the bulk density is lower than the bulk density threshold, the particulate matter detection index is determined to be the proportion of particulate matter with the target particle size range in the milk powder.
2. The determination method according to claim 1, characterized in that, Based on the test results, the influencing factors of the milk powder characteristics were determined, including: If the proportion of particles with the target particle size range in the milk powder is less than a first proportion threshold, the influencing factor is determined to be that the milk concentration output from the concentration process is lower than the preset milk concentration standard.
3. The determination method according to claim 1, characterized in that, Based on the preparation results and bulk density of the milk powder, the particulate matter testing indicators that need to be tested for the milk powder are determined, including: If the mixing result shows that the nutrients have been denatured and the bulk density is below the bulk density threshold, the particulate matter detection index is determined to be the surface morphology of the particulate matter in the milk powder.
4. The determination method according to claim 3, characterized in that, Also includes: If the viscosity of the milk powder is higher than the viscosity threshold, the mixing result is determined to be a case of nutritional cost denaturation.
5. The determination method according to claim 3, characterized in that, Based on the test results, the influencing factors of the milk powder characteristics were determined, including: When cracks appear on the surface morphology of particles in the milk powder, the influencing factor is determined to be that the temperature of the spray drying process is lower than the preset temperature standard.
6. The determination method according to claim 1, characterized in that, The determination of the particulate matter detection index based on the milk powder preparation result and bulk density includes: If the mixing result and bulk density of the milk powder meet the preset standards, the particulate matter evaluation index is determined to be the average particle size and particle size distribution.
7. The determination method according to claim 6, characterized in that, Based on the test results, the influencing factors of the milk powder characteristics were determined, including: If the average particle size of the milk powder is less than the particle size threshold and the proportion of particles in the target particle size range is less than the second proportion threshold, the influencing factors are determined to be that the nozzle diameter in the spray drying process is lower than the preset nozzle diameter standard and / or the spray height is lower than the preset height standard.
8. The determination method according to claim 1, characterized in that, The particulate matter detection indicators for the milk powder include: The proportion of particles with the target particle size range in the milk powder is detected using an intelligent powder tester or particle size analyzer. Alternatively, a scanning electron microscope can be used to examine the surface morphology of the milk powder particles; Alternatively, a particle size analyzer can be used to detect the particle size and particle size distribution of the milk powder.
9. The determination method according to claim 1, characterized in that, Also includes: Based on the factors affecting the characteristics of the milk powder, adjust the production parameters of the corresponding production process.