Infant nutrition calcium milk tablet and preparation method thereof

Abstract

The invention relates to the technical field of milk tablets, in particular to infant nutrition calcium milk tablets and a preparation method thereof. The calcium milk tablet is prepared by the method. The method comprises the following steps: weighing raw material components with required amounts; all the raw material components are subjected to sieving treatment; uniformly mixing the screened blueberry powder, the screened elderberry powder and the screened calcium carbonate to obtain a uniformly mixed material; then, spraying ethanol into the uniformly mixed material while uniformly mixing the uniformly mixed material, and uniformly mixing and granulating to obtain a granulated material; the mass of the ethanol is 0.8%-0.9% of the mass of the uniformly mixed material; carrying out sieving treatment on the granulated material; uniformly mixing the A2 whole milk powder, the compound vitamins, the compound minerals, the granulated materials and the xylitol which are subjected to sieving treatment, and then performing tabletting treatment to obtain the nutritional calcium milk tablets for the infants and the young children. The A2 whole milk powder, the compound vitamins, the compound minerals, the granulated materials and the xylitol which are subjected to sieving treatment are subjected to uniform mixing treatment to obtain the nutritional calcium milk tablets for the infants and the young children. According to the invention, the problems of heavy powder feeling, cracking, layering, insufficient hardness and the like of milk tablets caused by calcium enhancement are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of milk tablets, and in particular to an infant nutritional calcium milk tablet and a preparation method thereof. Background Art

[0002] Some commercially available infant formula tablets are not fortified with calcium, an essential nutrient for infant growth and development. Therefore, calcium fortification is essential in infant formula tablets. A common method for calcium fortification is to add calcium carbonate to the tablets. However, calcium carbonate is an anti-caking agent, which can lead to problems such as a heavy powdery feel, flakes, separation, and insufficient hardness during tableting. Industry professionals often use wet granulation technology to address this issue. This involves mixing all ingredients, adding a binder solution (such as water, ethanol, or other solvents) to form a wet material. The wet material is then dried for a specified period of time to obtain granules with a certain moisture content before tableting and other subsequent processes. This method requires both liquid and solid bridging, which is time-consuming and energy-intensive. Industry professionals also incorporate processing aids to improve surface interactions between particles, thereby enhancing tablet forming efficiency and hardness. Common processing aids include magnesium stearate and silica, but these cannot be added to infant formula tablets.

[0003] In summary, it is necessary to develop an infant nutritional calcium milk tablet and a preparation method thereof to solve the problems of powdery feel, cracking, stratification and insufficient hardness of milk tablets caused by calcium fortification. Summary of the Invention

[0004] The present invention aims to provide an infant nutritional calcium milk tablet and a preparation method thereof, and the specific technical scheme is as follows: In a first aspect, the present invention provides a method for preparing an infant nutritional calcium milk tablet, comprising: Step S1, weighing the following raw material components in percentage by mass: A2 whole milk powder 65%-71%, blueberry powder 1%-3%, elderberry powder 1%-3%, complex vitamins 0.8%-1.2%, complex minerals 3%-5%, calcium carbonate 15%-19%, and xylitol 6%-8%; Step S2, sieving all the raw material components; wherein the mesh size of the selected sieve is 30-40 mesh; Step S3, mixing the sieved blueberry powder, the elderberry powder, and the calcium carbonate to obtain a mixed material; then, spraying ethanol into the mixed material while mixing the mixed material, and granulating the mixed material to obtain a granulated material; the mass of the ethanol is 0.8% to 0.9% of the mass of the mixed material; Step S4, sieving the granulated material; wherein the mesh size of the selected sieve is 30-40 mesh; Step S5: uniformly mixing the sieved A2 whole milk powder, the compound vitamins, the compound minerals, the granulation material and the xylitol, and then tableting to obtain infant nutritional calcium milk tablets.

[0005] Optionally, the ethanol is ethanol with a volume fraction of 70% to 80%.

[0006] Optionally, the moisture content of the granulated material is 1.8% to 3.2%.

[0007] Optionally, step S3 is completed in a granulator.

[0008] Optionally, the compound vitamins include vitamin A, vitamin D, vitamin B1 and vitamin B2 in dosages in accordance with GB 22570-2014.

[0009] Optionally, the complex minerals include zinc and iron in amounts that meet the requirements of GB 22570-2014.

[0010] Optionally, in step S5, the mixing process includes first adding half the mass percentage of the A2 whole milk powder and all the mass percentage of the xylitol into a mixer and mixing them evenly, then adding all the mass percentage of the compound vitamins, the compound minerals and the granulation material into the mixer and mixing them evenly, and finally adding the other half the mass percentage of the A2 whole milk powder into the mixer and mixing them evenly.

[0011] Optionally, in step S5, the tableting process is completed in a tablet press at a tableting speed of 28,000 to 34,000 tablets per hour.

[0012] In a second aspect, the present invention provides an infant nutritional calcium milk tablet, which is prepared by the preparation method of the infant nutritional calcium milk tablet according to any one of claims 1 to 9.

[0013] Optionally, the hardness of the infant nutritional calcium milk tablet is 65~85N; the infant nutritional calcium milk tablet is crispy and not layered; and the nutritional level of the infant nutritional calcium milk tablet complies with the GB 22570-2014 standard.

[0014] The application of the technical solution of the present invention has at least the following beneficial effects: (1) The present invention provides a method for preparing infant calcium milk tablets. Without adding auxiliary agents (such as magnesium stearate or silicon dioxide), the present invention can prepare crisp and non-stratified infant calcium milk tablets with a high forming rate and moderate hardness, thereby solving the problems of heavy powder, cracking, stratification and insufficient hardness caused by calcium fortification. Specifically, in step S3, the present invention first mixes blueberry powder, elderberry powder and calcium carbonate, and then sprays a specific mass of ethanol into the mixed material while mixing the mixed material to obtain a granulated material. The purpose of this step is to utilize the high sugar content of blueberry powder and elderberry powder to increase the viscosity between the materials, and secondly, to wrap the calcium carbonate particles with blueberry powder and elderberry powder to reduce the contact area between calcium carbonate and other raw material components, thereby weakening the anti-caking effect of calcium carbonate in the material, improving the adhesion between the materials, and solving the problems of heavy powder, cracking, stratification and insufficient hardness that occur during the tableting process of the milk tablets. In addition, the sieving processes employed in steps S2 and S4 of the present invention are both intended to optimize the particle size of the material, increase the tableting adhesion, thereby increasing the milk tablet forming rate, and ensuring that the milk tablets have a moderate hardness. The A2 whole milk powder, compound vitamins, compound minerals, and calcium carbonate added in step S1 of the present invention ensure that the vitamins, minerals, and calcium carbonate in the milk tablet product meet the nutritional needs of infants and young children and comply with the GB 22570-2014 standard. The elderberry added in step S1 of the present invention has an anti-immune effect, and the added blueberry is rich in anthocyanins, enriching the product flavor. The added xylitol prevents dental caries.

[0015] (2) In the present invention, ethanol is sprayed into the mixed material in step S3, and after mixing and granulation, a granulated material is obtained; the mass of ethanol is 0.8% to 0.9% of the mass of the mixed material; the ethanol has a volume fraction of 70% to 80%; during the screening process in step S4 and the mixing and tableting process in step S5, ethanol evaporates, and part of the water remains in the granulated material. The final moisture content of the granulated material is 1.8% to 3.2%. This moisture content does not affect the quality of the final product, so it does not need to be dried and can be directly mixed with other materials and then tableted, thereby improving production efficiency.

[0016] (3) The infant nutritional calcium milk tablets prepared by the present invention have a complete structure, moderate hardness, are non-sticky to teeth, and do not delaminate or crack, and can be produced on a large scale.

[0017] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 This is a picture of a milk tablet product prepared in Example 1 of the present invention; Figure 2 This is a picture of the milk tablet product prepared in Comparative Example 1 of the present invention.

[0019] Figure 3 This is a picture of the milk tablet product prepared in Comparative Example 2 of the present invention. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0021] Example 1: A method for preparing an infant nutritional calcium milk tablet, comprising: Step S1, weighing the following raw material components in percentage by mass: A2 whole milk powder 67%, blueberry powder 2%, elderberry powder 2%, complex vitamins 1%, complex minerals 4%, calcium carbonate 16%, and xylitol 8%; Step S2, sieving all the raw material components; wherein the mesh size of the selected sieve is 40 mesh; Step S3, adding the sieved blueberry powder, the elderberry powder, and the calcium carbonate into a granulator and mixing them evenly (mixing time is 0.5 min) to obtain a mixed material; spraying ethanol into the mixed material, mixing it evenly (mixing time is 3 min), and granulating it to obtain a granulated material; the mass of the ethanol is 0.8% to 0.9% (specifically 0.85%) of the mass of the mixed material; Step S4, sieving the granulated material; wherein the mesh size of the selected sieve is 30 mesh; Step S5: uniformly mixing the sieved A2 whole milk powder, the compound vitamins, the compound minerals, the granulation material and the xylitol, and then tableting to obtain infant nutritional calcium milk tablets.

[0022] The ethanol is 75% by volume.

[0023] The moisture content of the granulated material is 1.8% to 3.2% (specifically 2.5%).

[0024] The compound vitamins include vitamin A, vitamin D, vitamin B1 and vitamin B2 in amounts that meet the requirements of GB 22570-2014 (see Table 1 of the essential ingredients in Section 3.4).

[0025] The complex minerals include zinc and iron in amounts that meet the requirements of GB 22570-2014 (see Table 1 of the essential ingredients in Section 3.4).

[0026] In step S5, the mixing process includes first adding half of the mass percentage of the A2 whole milk powder and all of the mass percentage of the xylitol into a mixer and mixing them evenly, then adding all of the mass percentage of the complex vitamins, the complex minerals and the granulation material into the mixer and mixing them evenly, and finally adding the other half of the mass percentage of the A2 whole milk powder into the mixer and mixing them evenly.

[0027] In step S5, the tableting process is completed in a tablet press at a tableting speed of 34,000 tablets per hour.

[0028] Comparative Example 1: Unlike Example 1, steps S3 to S4 are canceled, and step S5 is modified to the following operation: the A2 whole milk powder, the compound vitamins, the compound minerals, the blueberry powder, the elderberry powder, the calcium carbonate, and the xylitol after the sieving process are first mixed and then tableted to obtain infant nutritional calcium milk tablets. Specifically, the mixing process includes first adding half of the A2 whole milk powder and all of the xylitol by mass to a mixer and mixing, then adding all of the compound vitamins, the compound minerals, the blueberry powder, the elderberry powder, and the calcium carbonate by mass to a mixer and mixing, and finally adding the other half of the A2 whole milk powder by mass to a mixer and mixing. The tableting process is completed in a tablet press, and the tableting speed used is 34,000 tablets / hour.

[0029] Comparative Example 2: Unlike Comparative Example 1, calcium carbonate was omitted. First, the following raw material components were weighed in mass percentage: 83% A2 whole milk powder, the same amounts of blueberry powder, elderberry powder, xylitol, complex vitamins, and complex minerals as in Example 1; Next, all the raw material components are sieved; wherein the mesh size of the sieve selected is 30-40 mesh (specifically 30 mesh); Then, the sieved raw material components are added to a mixer and mixed for 3-5 minutes (specifically, 3 minutes) to obtain a uniformly mixed material. Specifically, half the mass percentage of the A2 whole milk powder and the entire mass percentage of the xylitol are first added to the mixer and mixed uniformly, followed by the entire mass percentage of the complex vitamins, complex minerals, blueberry powder, and elderberry powder, and finally, the remaining half the mass percentage of the A2 whole milk powder is added to the mixer and mixed uniformly. Finally, the mixed material is put into a tablet press to obtain milk tablets; the tableting speed used during tableting is 34,000 tablets / hour.

[0030] The milk tablets prepared in Example 1 and Comparative Examples 1-2 were sampled for nutrient content determination, hardness determination, and sensory evaluation. Specific results are shown in Table 1.

[0031] In the determination of nutrient content, the basis for determination of each nutrient is as follows: Determination of vitamin A reference: GB 5009.82-2016 "National Food Safety Standard Determination of Vitamin A in Foods"; Determination of vitamin D refers to: GB 5009.82-2016 "National Food Safety Standard Determination of Vitamin D in Foods"; Determination of vitamin B1: GB 5009.84-2016 "National Food Safety Standard - Determination of Vitamin B1 in Foods" Determination of vitamin B2: GB 5009.85-2016 "National Food Safety Standard - Determination of Vitamin B2 in Foods" Reference for calcium determination: GB 5009.92-2016 "National Food Safety Standard Determination of Calcium in Foods"; Reference for iron determination: GB 5009.90-2016 "National Food Safety Standard - Determination of Iron in Foods"; Reference for zinc determination: GB 5009.14-2017 "National Food Safety Standard Determination of Zinc in Foods".

[0032] Hardness determination method: Take 20 intact and undamaged milk tablet samples, place the milk tablet samples to be tested on the YD-II tablet hardness tester, record the hardness values ​​of the milk tablet samples, and take the average value as the test result (the test result contains the test error).

[0033] Sensory evaluation method: A panel of 10 trained individuals with tasting experience will evaluate the powder layer and stratification of the milk tablet samples, as well as the taste of the internal structure of the milk tablets during chewing.

[0034] Table 1 Results of nutrient content determination, hardness determination and sensory evaluation As shown in Table 1, compared to Comparative Example 1, the milk tablets prepared in Comparative Example 2 have moderate hardness, no stratification and little dust. This is because the milk tablets in Comparative Example 2 are not fortified with calcium, so the material can be directly pressed to prepare milk tablets; compared to Comparative Example 1, the milk tablets prepared in Example 1 of the present invention have moderate hardness, crisp taste, complete appearance and smooth surface, and are not stratified during the continuous tableting production process. However, when the milk tablets prepared in Comparative Example 1 are taken to the entrance, it can be felt that the internal structure of the milk tablets is loose and the powdery feel is heavy. The probability statistics of broken and stratified occurrence in the continuous tableting production process are 20% to 30%. This is because step S3 and step S4 are not adopted in Comparative Example 1, and it is impossible to cause the calcium carbonate particles to be wrapped by blueberry powder and elderberry powder, that is, the anti-caking effect of calcium carbonate in the material is obvious, resulting in poor adhesion of the milk tablet materials, and then causing the milk tablets to have problems such as heavy powdery feel, cracks, stratification and insufficient hardness.

[0035] Compared with Comparative Example 2, the milk tablets prepared in Example 1 of the present invention are fortified with calcium, and the calcium content meets the GB22570-2014 standard.

[0036] The milk slices prepared in Example 1, Comparative Example 1 and Comparative Example 2 were sampled and photographed. For specific photographic results, see Figure 1 、 Figure 2 and Figure 3 .

[0037] Depend on Figure 2 and Figure 3 It is known that the milk tablets prepared in Comparative Example 2 have a complete appearance and are not layered, while the milk tablets prepared in Comparative Example 1 have a heavy powdery appearance and are layered. Both Comparative Example 1 and Comparative Example 2 adopt a direct compression process. The difference is that Comparative Example 2 does not strengthen calcium carbonate while Comparative Example 1 strengthens calcium carbonate, which confirms that the presence of calcium carbonate will affect the adhesion and fluidity between materials, thereby resulting in low hardness and layering of the milk tablets.

[0038] Depend on Figure 1 and Figure 2 It is known that compared with Comparative Example 1, the milk tablets prepared by Example 1 of the present invention have a complete appearance and a smooth surface, which confirms that the use of steps S3 and S4 in Example 1 can cause the calcium carbonate particles to be wrapped by blueberry powder and elderberry powder, thereby reducing the anti-caking effect of calcium carbonate in the material, improving the adhesion between materials, and increasing the forming rate of the milk tablets, that is, the milk tablets have a complete appearance and a smooth surface.

[0039] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for preparing infant nutritional calcium milk tablets, characterized in that: include: Step S1, weighing the following raw material components in percentage by mass: A2 whole milk powder 65%-71%, blueberry powder 1%-3%, elderberry powder 1%-3%, complex vitamins 0.8%-1.2%, complex minerals 3%-5%, calcium carbonate 15%-19%, and xylitol 6%-8%; Step S2, sieving all the raw material components; wherein the mesh size of the selected sieve is 30-40 mesh; Step S3, mixing the sieved blueberry powder, the elderberry powder, and the calcium carbonate to obtain a mixed material; then, spraying ethanol into the mixed material while mixing the mixed material, and granulating the mixed material to obtain a granulated material; the mass of the ethanol is 0.8% to 0.9% of the mass of the mixed material; Step S4, sieving the granulated material; wherein the mesh size of the selected sieve is 30-40 mesh; Step S5: uniformly mixing the sieved A2 whole milk powder, the compound vitamins, the compound minerals, the granulation material and the xylitol, and then tableting to obtain infant nutritional calcium milk tablets.

2. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: The ethanol is ethanol with a volume fraction of 70% to 80%.

3. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: The moisture content of the granulated material is 1.8% to 3.2%.

4. The method for preparing the infant nutritional calcium milk tablet according to claim 1, wherein: The step S3 is completed in a granulator.

5. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: The compound vitamins include vitamin A, vitamin D, vitamin B1 and vitamin B2 in accordance with the dosage requirements of GB 22570-2014.

6. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: The compound minerals include zinc and iron in amounts that meet the requirements of GB 22570-2014.

7. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: In step S5, the mixing process includes first adding half of the mass percentage of the A2 whole milk powder and all of the mass percentage of the xylitol into a mixer and mixing them evenly, then adding all of the mass percentage of the complex vitamins, the complex minerals and the granulation material into the mixer and mixing them evenly, and finally adding the other half of the mass percentage of the A2 whole milk powder into the mixer and mixing them evenly.

8. The method for preparing the infant nutritional calcium milk tablet according to claim 1, characterized in that: In step S5, the tableting process is completed in a tablet press at a tableting speed of 28,000 to 34,000 tablets per hour.

9. A calcium nutritional milk tablet for infants and young children, characterized in that: The infant nutritional calcium milk tablet is prepared by the preparation method of the infant nutritional calcium milk tablet according to any one of claims 1 to 9.

10. The infant nutritional calcium milk tablet according to claim 9, characterized in that: The hardness of the infant nutritional calcium milk tablet is 65-85N; the infant nutritional calcium milk tablet is crispy and does not separate; and the nutritional level of the infant nutritional calcium milk tablet complies with the GB 22570-2014 standard.

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