Preparation system of compound nutrient preparation

Abstract

The utility model provides a preparation system of a compound nutrient preparation, and relates to the technical field of nutrient preparation. According to the utility model, porous starch adsorption and starch sodium octenylsuccinate adhesion are realized through the stirring tank, and finally, a coating preparation unit is used for coating. The preparation system of the compound nutrient preparation disclosed by the utility model is suitable for a preparation scene of a child compound nutrient containing vitamin C with poor stability; and the continuous production of the compound nutrient preparation from adsorption adhesion to vacuum drying to coating granulation is realized, and the technical effects of improving the production efficiency and the product quality are achieved.

Description

Technical Field

[0001] This utility model relates to the field of nutrient preparation technology, and in particular to a preparation system for compound nutrient preparations. Background Technology

[0002] To meet consumers' comprehensive nutritional needs, single or compound nutrients are typically added to formulated foods. However, within the food system, nutrients and various compounds intertwine, potentially interacting and degrading with each other, leading to reduced nutritional efficacy and ultimately food spoilage. For example, metal ions such as iron, copper, zinc, and manganese have significant catalytic oxidation effects on vitamins, unsaturated fatty acids, and animal and vegetable oils, accelerating their oxidation process.

[0003] Currently, the food industry routinely uses a simple stirring encapsulation method when preparing nutrient formulations. This method suffers from low encapsulation efficiency, making it difficult to effectively inhibit the degradation reactions between nutrients and other compounds in food, and thus failing to reliably guarantee the stability of nutrient formulations and formulated foods. While existing microencapsulation technologies, such as spray drying, are commonly used, the resulting microcapsules have limitations such as small particle size, low bulk density, and tendency to agglomerate after rehydration, leading to poor water solubility. These problems severely restrict the stability and bioavailability of nutrient formulations, limiting their application effectiveness in the food sector.

[0004] Therefore, there is an urgent need for a preparation system that can improve the stability of compound nutrient preparations. Utility Model Content

[0005] In view of the above problems, the present invention provides a preparation system for compound nutrient preparations to solve at least one problem existing in the prior art.

[0006] In the first aspect, this utility model protects a preparation system for a compound nutrient formulation, comprising an adsorption and adhesion unit, a vacuum drying unit, and a coating and granulation unit arranged sequentially; the adsorption and adhesion unit includes a stirring tank, a nitrogen tank, a solution tank, and a temporary storage tank; the nitrogen tank and the solution tank are respectively connected to the top of the stirring tank via pipes; the temporary storage tank is connected to the outlet of the stirring tank; the vacuum drying unit includes a spray dryer, a vacuum pump, a cyclone separator, and a collection bottle; the spray dryer adopts a tower structure; the vacuum pump is connected to the spray dryer, and the outlet of the spray dryer is connected to the collection bottle via the cyclone separator; the coating and granulation unit includes a fluidized bed granulator and a coating agent dissolving tank for dissolving the coating agent.

[0007] Furthermore, in a preferred configuration, the fluidized bed granulator is connected to the coating agent dissolving tank via a peristaltic pump in the coating agent dissolving tank; the dissolved coating agent is transported to the feed nozzle of the fluidized bed granulator via the peristaltic pump in the coating agent dissolving tank; the feed nozzle of the fluidized bed granulator is located above and to the side of the fluidized bed granulator.

[0008] Furthermore, in a preferred configuration, the adsorption and adhesion unit and the vacuum drying unit operate under nitrogen protection throughout the entire process.

[0009] Furthermore, in a preferred configuration, the mixing tank and the spray dryer are connected via a peristaltic pump discharging from the mixing tank.

[0010] Furthermore, a preferred structure is that the mixing tank has an inverted conical shape and is equipped with a propeller-type agitator with a vertical rotating shaft inside.

[0011] Furthermore, a preferred structure is that the fluidized bed granulator adopts a disc-type structure and is equipped with a heating coil and a temperature sensor.

[0012] Furthermore, a preferred structure is that the propeller-type agitator is provided with a double-layer agitator, wherein the double-layer agitator includes a 45° inclined blade agitator in the upper layer and a turbine agitator in the lower layer.

[0013] Furthermore, a preferred structure is that a polytetrafluoroethylene coating is provided on the inner wall of the spray dryer, and a high-frequency air hammer rapping device is correspondingly provided on the outside of the spray dryer.

[0014] Furthermore, a preferred structure is that the exhaust port of the cyclone separator is connected to the air inlet of the fluidized bed granulator to form a nitrogen closed-loop circuit.

[0015] Furthermore, a preferred configuration is that a laser particle size analyzer is installed at the outlet of the fluidized bed granulator.

[0016] This invention provides a preparation system for compound nutrient formulations, comprising an adsorption and adhesion unit, a vacuum drying unit, and a coating and granulation unit arranged sequentially. The adsorption and adhesion unit includes a stirring tank, a nitrogen tank, a solution tank, and a temporary storage tank. The nitrogen tank and the solution tank are respectively connected to the top of the stirring tank via pipes. The temporary storage tank is connected to the outlet of the stirring tank. The vacuum drying unit includes a spray dryer, a vacuum pump, a cyclone separator, and a collection bottle. The spray dryer adopts a tower structure. The vacuum pump is connected to the spray dryer, and the outlet of the spray dryer is connected to the collection bottle via the cyclone separator. The coating and granulation unit includes a fluidized bed granulator and a coating agent dissolving tank for dissolving the coating agent. This invention utilizes a combined process involving porous starch adsorption and sodium octenyl succinate adhesion via a stirred tank, followed by coating using a coating formulation unit. This process overcomes the limitations of existing microcapsules, such as fine particle size, low bulk density, and poor water solubility. The system is suitable for preparing compound nutrient formulations for children, including those containing unstable vitamin C. Furthermore, it significantly improves the encapsulation rate of nutrients, effectively reduces the degradation interactions between nutrients and other components, and enhances the stability of the compound nutrient formulation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the preparation system for the compound nutrient preparation according to an embodiment of the present invention.

[0018] Figure 2 A schematic flowchart of a method for preparing a compound nutrient preparation according to an embodiment of this utility model.

[0019] 1. Mixing tank; 2. Nitrogen valve; 3. Feed orifice; 4. Compound nutrient solution nozzle; 5. Nitrogen tank; 6. Solution tank; 7. Mixing tank feed peristaltic pump; 8. Agitator; 9. Discharge valve; 10. Temporary storage tank; 11. Mixing tank discharge peristaltic pump; 12. Spray dryer; 13. Spray dryer feed nozzle; 14. Vacuum pump; 15. Cyclone separator; 16. Collection bottle; 17. Fluidized bed granulator; 18. Fluidized bed granulator feed nozzle; 19. Coating agent dissolving tank; 20. Coating agent dissolving tank peristaltic pump; 21. Fluidized bed granulator discharge valve. Detailed Implementation

[0020] This utility model will be described in more detail with reference to the following embodiments. However, the scope of protection of this utility model is not limited to the following embodiments.

[0021] Example 1

[0022] A system for preparing a compound nutrient formulation includes an adsorption and adhesion unit, a vacuum drying unit, and a coating and granulation unit arranged sequentially. The adsorption and adhesion unit includes a stirring tank 1, a nitrogen tank 5, a solution tank 6, and a temporary storage tank 10. The nitrogen tank 5 and the solution tank 6 are respectively connected to the top of the stirring tank 1 via pipes. The temporary storage tank 10 is connected to the outlet of the stirring tank 1. The coating and granulation unit includes a fluidized bed granulator 17 and a coating agent dissolving tank 19. The coating agent dissolving tank 19, used to dissolve the coating agent, is connected to the fluidized bed granulator 17. The stirring tank 1 is equipped with a stirring paddle 8, a stirring tank feed peristaltic pump 7 at its inlet, and a discharge valve 9 at its outlet. The material is conveyed through the spray dryer feed nozzle 13 to the spray dryer 12 of the vacuum drying unit by the stirring tank discharge peristaltic pump 11.

[0023] The feed port 3 of the mixing tank 1 is used for feeding materials. The compound nutrient solution nozzle 4 sprays the solution from the solution tank 6 into the mixing tank 1, where it is thoroughly mixed and adsorbed with the encapsulating agent under the stirring of the impeller 8. The nitrogen tank 5 can introduce nitrogen into the mixing tank 1 through the nitrogen valve 2 to prevent material oxidation and assist in stirring. In the specific implementation process, the feed port 3 is a flip-top cover. After opening the cover, the porous starch starch is first added to the mixing tank 1 and then the cover is closed. At the same time, the nitrogen valve 2 is opened to fill the tank with nitrogen and maintain the nitrogen pressure at 1 MPa.

[0024] The vacuum drying unit includes a spray dryer 12, a vacuum pump 14, a cyclone separator 15, and a collection bottle 16. The spray dryer 12 adopts a tower structure. The vacuum pump 14 is connected to the spray dryer 12, and vacuum drying is performed under the action of the vacuum pump 14. The discharge port of the spray dryer 12 is connected to the collection bottle 16 through the cyclone separator 15. The dried material is separated by the cyclone separator 15 and collected in the collection bottle 16. The vacuum pump is connected to the spray dryer to maintain the vacuum degree of the drying chamber, and drying is performed at a vacuum degree of -0.08MPa to -0.1MPa.

[0025] The coating granulation unit includes a fluidized bed granulator 17 and a coating agent dissolving tank 19. The coating agent dissolving tank 19 is used to dissolve the coating agent, which is then conveyed to the fluidized bed granulator 17 via a peristaltic pump 20. The coating agent is sprayed into the fluidized bed granulator 17 through the feed nozzle 18. The fluidized bed granulator 17 is also equipped with a discharge valve 21 for discharging. After the coating agent in the coating agent dissolving tank 19 is dissolved, it is conveyed to the fluidized bed granulator 17 via the peristaltic pump 20 and sprayed into the fluidized bed granulator through the feed nozzle 18 to coat the material. The treated compound nutrient preparation is finally discharged from the fluidized bed granulator discharge valve 21. The coating agent dissolving tank 19 adopts a stirring structure and is equipped with a stirrer to ensure uniform dissolution of the coating agent; the peristaltic pump 20 is used to convey the dissolved coating agent to the fluidized bed granulator 17.

[0026] The compound nutrient preparation system of this invention realizes continuous production of compound nutrient preparations from adsorption and adhesion to vacuum drying and coating granulation, thereby improving production efficiency and product quality.

[0027] Example 2

[0028] A system for preparing a compound nutrient formulation includes an adsorption and adhesion unit, a vacuum drying unit, and a coating and granulation unit arranged sequentially. The adsorption and adhesion unit includes a stirring tank 1, a nitrogen tank 5, a solution tank 6, and a temporary storage tank 10. The nitrogen tank 5 and the solution tank 6 are respectively connected to the top of the stirring tank 1 via pipes. The temporary storage tank 10 is connected to the outlet of the stirring tank 1. The coating and granulation unit includes a fluidized bed granulator 17 and a coating agent dissolving tank 19. The coating agent dissolving tank 19, used to dissolve the coating agent, is connected to the fluidized bed granulator 17. The stirring tank 1 is equipped with a stirring paddle 8, a stirring tank feed peristaltic pump 7 at its inlet, and a discharge valve 9 at its outlet. The material is conveyed through the spray dryer feed nozzle 13 to the spray dryer 12 of the vacuum drying unit by the stirring tank discharge peristaltic pump 11.

[0029] To further improve adsorption time and encapsulation rate, the propeller-type agitator is equipped with a double-layer agitator, comprising an upper 45° inclined blade and a lower turbine blade. During implementation, the upper 45° inclined blade presses the porous starch downwards, preventing it from floating; the lower turbine blade shears at high speed, ensuring full contact between the nutrient solution and the starch. Furthermore, to further facilitate top injection, as an improvement in this embodiment, a microporous nitrogen nozzle is provided on the side wall of the mixing tank 1. The micropores (0.5mm in diameter) are arranged in a 360° ring around the tank body, uniformly releasing nitrogen through them; forming a dynamic gas curtain barrier to completely isolate oxygen.

[0030] The feed port 3 of the mixing tank 1 is used for feeding materials. The compound nutrient solution nozzle 4 sprays the solution from the solution tank 6 into the mixing tank 1, where it is thoroughly mixed and adsorbed with the encapsulating agent under the stirring of the impeller 8. Nitrogen tank 5, through nitrogen valve 2, allows nitrogen to be introduced into the mixing tank 1 to prevent material oxidation and assist in stirring. In the specific implementation process, the feed port 3 is a flip-top lid. After opening the lid, the porous starch starch is first added to the mixing tank 1, and then the lid is closed. Simultaneously, nitrogen valve 2 is opened to fill the tank with nitrogen, maintaining a nitrogen pressure of 1 MPa. In the specific implementation process, the mixing tank 1 adopts an inverted conical structure and an internal propeller-type agitator, combined with the top compound solution nozzle and nitrogen inlet, to prevent the oxidation of ferrous fumarate and achieve uniform adsorption of porous starch.

[0031] The vacuum drying unit includes a spray dryer 12, a vacuum pump 14, a cyclone separator 15, and a collection bottle 16. The spray dryer 12 adopts a tower structure. The vacuum pump 14 is connected to the spray dryer 12, and vacuum drying is performed under the action of the vacuum pump 14. The discharge port of the spray dryer 12 is connected to the collection bottle 16 through the cyclone separator 15. The dried material is separated by the cyclone separator 15 and collected in the collection bottle 16. The vacuum pump is connected to the spray dryer to maintain the vacuum degree of the drying chamber, and drying is performed at a vacuum degree of -0.08MPa to -0.1MPa. In specific implementation, in order to protect heat-sensitive nutrients (such as vitamin C) and reduce thermal degradation, the spray dryer 12 operates at a vacuum degree of -0.08MPa to -0.1MPa, combined with a low-temperature air outlet of 50℃.

[0032] The coating granulation unit includes a fluidized bed granulator 17 and a coating agent dissolving tank 19. The coating agent dissolving tank 19 is used to dissolve the coating agent, which is then conveyed to the fluidized bed granulator 17 via a peristaltic pump 20. The coating agent is sprayed into the fluidized bed granulator 17 through the feed nozzle 18. The fluidized bed granulator 17 is also equipped with a discharge valve 21 for discharging. After the coating agent in the coating agent dissolving tank 19 is dissolved, it is conveyed to the fluidized bed granulator 17 via the peristaltic pump 20 and sprayed into the fluidized bed granulator through the feed nozzle 18 to coat the material. The treated compound nutrient preparation is finally discharged from the fluidized bed granulator discharge valve 21. The coating agent dissolving tank 19 adopts a stirring structure and is equipped with a stirrer to ensure uniform dissolution of the coating agent; the peristaltic pump 20 is used to convey the dissolved coating agent to the fluidized bed granulator 17. In the specific implementation process, the feed nozzle of the fluidized bed granulator 17 is located on the upper side of the fluidized bed granulator 17. The dissolved coating agent is atomized and sprayed at 10% w / w to achieve uniform coating and avoid agglomeration. Moreover, the coating agent dissolving tank 19 supports the dissolution of two components, hydroxypropyl methylcellulose and modified starch, to form a dense third coating layer, which blocks the catalytic oxidation of metal ions.

[0033] As an improvement to this embodiment, the fluidized bed granulator adopts a disc structure and is equipped with a heating coil and a temperature sensor.

[0034] As an improvement to this embodiment, in order to increase drying efficiency and reduce material adhesion, a polytetrafluoroethylene coating is provided on the inner wall of the spray dryer 12, and a high-frequency air hammer vibration device is correspondingly provided on the outside of the spray dryer. The high-frequency air hammer vibration device vibrates once every 5 minutes, automatically peeling off the dry powder.

[0035] As an improvement to this embodiment, in order to reduce nitrogen consumption, the exhaust port of the cyclone separator 15 is connected to the air inlet of the fluidized bed granulator 17, forming a closed-loop nitrogen circuit. That is, the nitrogen discharged from the cyclone separator is purified and then reused as fluidizing gas in the fluidized bed granulation process through a nitrogen-sealed delivery pipeline.

[0036] As an improvement to this embodiment, a laser particle size analyzer is installed at the outlet of the fluidized bed granulator 17 to perform real-time particle size detection on the product produced by the fluidized bed granulator 17. In specific implementation, automatic particle size detection is achieved through the time controller of the control system, saving the screening step.

[0037] Experimental Example 1

[0038] This embodiment utilizes the compound nutrient preparation system of Example 1 to implement a method for preparing a compound nutrient preparation of children's nutritional tablets, including the following steps S110 to S160.

[0039] S110. Weigh the predetermined amount of nutrient raw materials and pour them into a solution container. Add 1400 grams of purified water and heat to 40°C until completely dissolved to obtain a compound nutrient solution. The nutrient raw materials include 300 grams of ferrous fumarate and 300 grams of zinc sulfate. The purity of the ferrous fumarate is ≥98%, and the purity of the zinc sulfate is ≥99%.

[0040] S120. Pour the compound nutrient solution into a mixing tank, add 900 grams of porous starch, and stir until fully adsorbed; the stirring speed is 500 rpm, and the stirring time is 30 minutes. The porous starch has a pore size range of 10-40 μm; simultaneously, open nitrogen valve 2 to fill the tank with nitrogen gas at a pressure of 1 MPa.

[0041] S130. Add 300g of sodium octenyl succinate starch and 600g of maltodextrin to the mixing tank respectively, and stir until fully adhered to obtain a compound nutrient double-encapsulation solution; the stirring speed is 800 rpm and the stirring time is 25 minutes; wherein, the viscosity of the sodium octenyl succinate starch is 3000-5000 mPa·s, and the DE value of the carbohydrate compound is greater than 16.

[0042] S140. The obtained compound nutrient double-encapsulation solution was vacuum dried at a vacuum degree of -0.1 MPa and an outlet air temperature of 50°C to obtain 2360 grams of compound nutrient double-encapsulation powder.

[0043] S150. The compound nutrient double-encapsulated powder and the coating agent are coated using a fluidized bed granulator for 1 hour. The coating agent consists of 157 g of hydroxypropyl methylcellulose and 79 g of modified starch dissolved to prepare a 10% solution. Under the conditions of an inlet air temperature of 70°C and a vacuum degree of -0.08 MPa, the compound nutrient triple-encapsulated powder is obtained.

[0044] S160. The compound nutrient triple-encapsulated powder is sieved through a 40-mesh sieve and packaged to obtain compound nutrient preparation 1. Compound nutrient preparation 1 includes compound nutrients arranged sequentially from the inside out, a first adsorption layer, a second adhesion layer, and a third coating layer; the first adsorption layer includes porous starch; the second adhesion layer includes sodium octenyl succinate starch and maltodextrin; the third coating layer includes hydroxypropyl methylcellulose and modified starch.

[0045] The compound nutrient preparation 1 of this utility model is a dark red granule. When tested for iron and zinc content, the results showed that the iron content was 3.55% and the zinc content was 4.05%.

[0046] The flowability of the compound nutrient preparation 1 of this invention was tested. The angle of repose, the maximum angle formed by the free inclined plane of the powder accumulation layer and the horizontal plane, is measured when particles slide on the free inclined plane of the powder accumulation layer and reach equilibrium between gravity and interparticle friction, resulting in a stationary state. It is the simplest method to test the flowability of powder. Generally, a smaller angle of repose indicates better flowability; an angle of repose less than 40° meets the flowability requirements in the production process. The test results show that the angle of repose of the compound nutrient preparation prepared in this embodiment is 38°, indicating good flowability.

[0047] The prepared compound nutrient preparation 1 was subjected to accelerated treatment at 45℃ and 75% humidity for 6 months, and the iron and zinc content in the finished product was tested. The test results are shown in Table 1.

[0048] Table 1. Effect of Acceleration Time on Iron Content of Compound Nutrient Preparations

[0049] Acceleration time (months) 0 1 2 3 4 5 6 Iron content (%) 3.55 3.53 3.53 3.52 3.52 3.52 3.52 Zinc content (%) 4.05 4.05 4.03 4.03 4.02 4.02 4.02

[0050] As can be seen from Table 1, the iron loss rate of the compound nutrient preparation 1 prepared in this embodiment was 0.85% and the zinc loss rate was 0.74% after 6 months of accelerated processing, which proves that the finished product has good stability.

[0051] The particle size distribution of the prepared compound nutrient formulation 1 was tested using a particle size analyzer. The results showed that the D50 was 206 μm and the D90 was 465 μm.

[0052] The prepared compound nutrient preparation 1 is then prepared into children's nutritional tablets according to the following steps:

[0053] 1) Ingredients: Weigh all ingredients and nutrients according to the formula in the children's nutritional tablets.

[0054] 2) Mixing: Add the weighed raw materials and nutrients into the mixer and mix them.

[0055] 3) Granulation: The mixed materials are granulated using a wet granulator.

[0056] 4) Drying: Dry the prepared granules.

[0057] 5) Tableting: Use a tablet press to compress the treated granules into tablets.

[0058] 6) Packaging: After the compressed tablets are sorted, they are bottled and packaged.

[0059] The prepared tablets were subjected to accelerated curing at 45℃ and 75% humidity for 6 months, and the vitamin C content in the finished product was determined. The test results are shown in Table 2.

[0060] Table 2 shows the vitamin C content of children's nutritional tablets prepared using the compound nutrient preparation 1 obtained in Preparation Example 1 within six months at room temperature.

[0061] Storage time (month) 0 1 2 3 4 5 6 Vitamin C content (mg / g) 41.27 41.03 40.57 39.76 38.71 38.18 37.66

[0062] Vitamin C loss rate = (41.27 - 37.66) / 41.27 * 100% = 8.75%.

[0063] Among the various experimental supplies mentioned in this article (including but not limited to chemical reagents, biological products, cells, organisms, instruments, etc.), for those that are special or difficult to obtain, the manufacturers, references or detailed preparation methods have been noted in the article; unless otherwise specified, they are all conventional experimental supplies that could be easily obtained through various means (such as purchase, self-preparation, etc.) before the date of this application.

[0064] Although the present invention has been described in detail above with general descriptions, specific embodiments, and experiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications and improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A preparation system for a compound nutrient formulation, characterized in that, It includes an adsorption and adhesion unit, a vacuum drying unit, and a coating and granulation unit arranged in sequence; The adsorption and adhesion unit includes a stirring tank, a nitrogen tank, a solution tank, and a temporary storage tank; the nitrogen tank and the solution tank are respectively connected to the top of the stirring tank through pipes; the temporary storage tank is connected to the outlet of the stirring tank. The vacuum drying unit includes a spray dryer, a vacuum pump, a cyclone separator, and a collection bottle; the spray dryer adopts a tower structure; the vacuum pump is connected to the spray dryer, and the outlet of the spray dryer is connected to the collection bottle through the cyclone separator; The coating granulation unit includes a fluidized bed granulator and a coating agent dissolving tank for dissolving the coating agent.

2. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The fluidized bed granulator is connected to the coating agent dissolving tank via a peristaltic pump in the coating agent dissolving tank; the dissolved coating agent is pumped to the feed nozzle of the fluidized bed granulator via the peristaltic pump in the coating agent dissolving tank; the feed nozzle of the fluidized bed granulator is located on the upper side of the fluidized bed granulator.

3. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The adsorption and adhesion unit and the vacuum drying unit operate under nitrogen protection throughout the entire process.

4. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The mixing tank and the spray dryer are connected by a peristaltic pump for discharging the mixing tank.

5. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The mixing tank has an inverted conical structure and is equipped with a propeller-type agitator with a vertical rotating shaft inside.

6. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The fluidized bed granulator adopts a disc-type structure and is equipped with a heating coil and a temperature sensor.

7. The preparation system for compound nutrient formulations according to claim 5, characterized in that, The propeller-type agitator is equipped with a double-layer agitator, wherein the double-layer agitator includes a 45° inclined blade agitator in the upper layer and a turbine agitator in the lower layer.

8. The preparation system for compound nutrient formulations according to claim 1, characterized in that, A polytetrafluoroethylene coating is provided on the inner wall of the spray dryer, and a high-frequency air hammer oscillator is correspondingly provided on the outside of the spray dryer.

9. The preparation system for compound nutrient formulations according to claim 1, characterized in that, The exhaust port of the cyclone separator is connected to the air inlet of the fluidized bed granulator, forming a nitrogen closed-loop circuit.

10. The preparation system for the compound nutrient formulation according to claim 1, characterized in that, A laser particle size analyzer is installed at the outlet of the fluidized bed granulator.

Images