A multi-stage grinding preparation process for ultra-fine powder flavor

Abstract

The present invention discloses a multi-stage grinding preparation process for ultrafine powder flavor. The specific process steps include: first weighing raw materials and carrier substances for mixing and dissolving, polycondensation reaction, and obtaining solid particles after concentration, purification, crystallization precipitation and drying. Subsequently, the solid particles are subjected to two-roll pressing and grinding by four pairs of grinding rollers respectively. Then, the primary powder obtained after the first screening is subjected to ball milling treatment, and then secondary screening is carried out to obtain secondary powder. Finally, ultrafine powder flavor is obtained after surface grinding treatment. In the present invention, the grinding rollers first perform two-roll pressing and crushing treatments on large particle flavors to initially refine the particles. Subsequently, ball milling is used to perform rotary grinding treatment on the initially refined particles to smooth their surfaces and refine them again. Then, surface grinding is carried out after screening. In this way, the flavor can be ground into powder with an ultrafine particle size.

Description

Technical Field

[0001] The present invention discloses a multi-stage grinding preparation process for ultra-fine powder essence, belonging to the technical field of food additive preparation. Background Art

[0002] Essence is a concentrated aromatic oil artificially synthesized to imitate the smells of fruits and natural spices; it is an artificial fragrance; it is mostly used in the manufacture of foods, cosmetics, cigarettes, etc. The dosage forms of essence include liquid, powder, microcapsule, paste, etc. When producing powdered essence, a grinding device is needed to fully mix and grind various essence materials.

[0003] Most of the existing grinding methods use a grinding ball head or a grinding disc for horizontal grinding. Since the direction and magnitude of the force applied to the solid essence during single grinding are the same, although the essence can be gradually ground into components, the particle sizes of the essence vary greatly, and it is impossible to ensure that its particles are uniform and delicate, thereby affecting its use effect as an additive. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art and provide a multi-stage grinding preparation process for ultra-fine powder essence.

[0005] The present invention realizes the above purpose through the following technical solutions. A multi-stage grinding preparation process for ultra-fine powder essence includes the following steps:

[0006] S1: Weigh 2-4 parts of benzyl alcohol, 1-2 parts of δ-decalactone, 2-3 parts of δ-dodecalactone, 20-30 parts of furanone, 10-15 parts of mercaptan, 2-3 parts of thioacetate, and 40-60 parts of silicon dioxide as raw materials, use 300-400 parts of glucose as a carrier agent, mix all components and carry out a dissolution and polycondensation reaction under the action of an acidic catalyst, and then concentrate, purify, crystallize, precipitate, and dry to obtain solid particles.

[0007] S2: Input the solid particles from the A direction of four opposed grinding rollers, carry out the first roll pressing and grinding, then enter the nip between the rollers, and then carry out the second roll pressing and grinding in the B and C directions respectively by two groups of grinding rollers, and conduct a primary screening on the ground particles to obtain primary particles and primary powder materials.

[0008] S3: Put the primary powder materials into a hemispherical grinding cavity, extrude the primary powder materials against the grinding cavity wall by a grinding ball head and carry out rotary grinding treatment, and then obtain secondary particles and secondary powder materials after secondary screening.

[0009] S4: Carry out surface grinding treatment on the secondary powder through two flat grinding discs to finally obtain ultra-fine powder essence.

[0010] Preferably, in steps S2 and S3, the primary particles and the secondary particles obtained are both continuously fed in the A direction for roll grinding.

[0011] Preferably, in step S2, the two grinding rolls for roll grinding in the A direction are kept at room temperature, and a heating medium is introduced into the two grinding rolls for roll grinding in the B and C directions to keep their temperature constant at 40-45 °C.

[0012] Preferably, the secondary screening method is to vertically drop the powder after rotary grinding, and blow it from one side by a blower, and screen it according to the different distances that the powder is blown off due to different weights.

[0013] Preferably, in step S1, the acidic catalyst comprises a mixture of 10-15 parts of capric acid, 0.5-1 part of propionic acid, 1-2 parts of butyric acid and 0.2-0.5 part of lactic acid.

[0014] Preferably, in step S1, 1-2 parts of ethyl oleate, 0.3-0.6 part of vanillin and 0.8-1.2 parts of ethyl maltol are further mixed and added to the raw materials.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] First, the solid particles are roll-ground twice by using four grinding rolls, so that the solid particles can be extruded and crushed twice, reducing the particle size of the particles. Subsequently, the surface of the particles is ground again by the grinding ball head to make its surface flat, keep the shape round, and further reduce the particle size. Finally, the flat grinding disc is used to perform the final flat grinding treatment on the particles after rotary grinding, which not only ensures that the ground essence powder has an ultra-fine particle size, but also the particle sizes are basically the same, so that it can quickly taste when used as an additive and keep the same flavor.

[0017] Second, after the first roll grinding, the powder particles will enter the nip formed by the four grinding rolls distributed in pairs. When two of the grinding rolls are heated, the local surface of the powder particles will soften and adhere to the two grinding rolls for grinding in the B and C directions, thus completing automatic feeding and realizing the second roll grinding. Since the contact time between the powder particles and the grinding rolls is very short, the chemical composition and volume of the essence will basically not be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the roll grinding of four grinding rolls in the present invention;

[0019] Reference numerals: 1, grinding roll; 2, nip; 3, hopper; 4, scraper; DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions will be described clearly and completely in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Example 1

[0022] As Figure 1 shown, a multi-stage grinding preparation process for ultrafine powder flavor includes the following steps:

[0023] S1: Weigh 2 parts of benzyl alcohol, 1 part of δ-decalactone, 3 parts of δ-dodecalactone, 30 parts of furanone, 10 parts of mercaptan, 2 parts of thioacetate and 45 parts of silicon dioxide as raw materials according to mass parts. Using 330 parts of glucose as a carrier agent, mix all components and carry out dissolution and polycondensation reactions under the action of 10 parts of capric acid, 0.5 part of propionic acid, 1 part of butyric acid and 0.2 part of lactic acid as catalysts. Then, concentrate, purify, crystallize, precipitate and dry to obtain solid particles.

[0024] S2: Feed the solid particles into the four roll mills from the A direction of the grinding rolls 1. After the first roll pressing and grinding, enter the roll gap 2, and then carry out the second roll pressing and grinding in the B and C directions respectively by two groups of grinding rolls 1. Screen the ground particles for the first time to obtain primary particles and primary powder materials. Continue to feed the primary particles and secondary particles in the A direction for roll pressing and grinding.

[0025] S3: Put the primary powder materials into a hemispherical grinding cavity. Extrude the primary powder against the grinding cavity wall by the grinding ball head and carry out rotary grinding treatment. Then, screen for the second time to obtain secondary particles and secondary powder materials. The second screening method is to let the powder after rotary grinding fall vertically, and blow from one side by a blower. Screen according to the different distances that the powder is blown off due to different weights.

[0026] S4: Carry out surface grinding treatment on the secondary powder through two flat grinding disks to finally obtain ultrafine powder flavor.

[0027] Example 2

[0028] As Figure 1 shown, a multi-stage grinding preparation process for ultrafine powder flavor includes the following steps:

[0029] S1: Weigh 3 parts of benzyl alcohol, 2 parts of δ-decalactone, 2 parts of δ-dodecalactone, 26 parts of furanone, 10 parts of mercaptan, 3 parts of thioacetate and 40 parts of silicon dioxide by mass as raw materials. Using 400 parts of glucose as a carrier agent, mix all the components and carry out dissolution and polycondensation reactions under the action of 12 parts of capric acid, 1 part of propionic acid, 1 part of butyric acid and 0.5 part of lactic acid as catalysts. Subsequently, concentrate, purify, crystallize and precipitate, and dry to obtain solid particles;

[0030] S2: Feed the solid particles into the A direction of the four opposed grinding rolls 1, carry out the first roll pressing and grinding, then enter the nip 2, and then carry out the second roll pressing and grinding in the B and C directions respectively by two groups of grinding rolls 1. Screen the ground particles for the first time to obtain primary particles and primary powder. Continuously feed the primary particles and secondary particles into the roll pressing and grinding in the A direction. The two grinding rolls 1 for roll pressing and grinding in the A direction are kept at room temperature, and hot oil is introduced into the two grinding rolls 1 for roll pressing and grinding in the B and C directions to keep them at a constant temperature of 60 °C;

[0031] S3: Put the primary powder into a hemispherical grinding cavity, extrude the primary powder against the grinding cavity wall by the grinding ball head and carry out rotational grinding treatment. Subsequently, carry out secondary screening to obtain secondary particles and secondary powder. The secondary screening method is to let the rotated and ground powder fall vertically, and then blow from one side by a blower. Screen according to the different distances that the powder is blown off due to different weights;

[0032] S4: Carry out surface grinding treatment on the secondary powder through two flat grinding discs to finally obtain ultrafine powder flavor.

[0033] Example 3

[0034] As Figure 1 shown, a multi-stage grinding preparation process for ultrafine powder flavor includes the following steps:

[0035] S1: Weigh 2 parts of benzyl alcohol, 2 parts of δ-decalactone, 3 parts of δ-dodecalactone, 30 parts of furanone, 15 parts of mercaptan, 2 parts of thioacetate and 40 parts of silicon dioxide by mass as raw materials. Using 300 parts of glucose as a carrier agent, mix all the components and carry out dissolution and polycondensation reactions under the action of 15 parts of capric acid, 0.5 part of propionic acid, 1 part of butyric acid and 0.5 part of lactic acid as catalysts. Subsequently, concentrate, purify, crystallize and precipitate, and dry to obtain solid particles;

[0036] S2: Feed the solid particulate matter in the A direction of the four pair of grinding rolls 1 distributed in pairs. After the first roll pressing and grinding, it enters the pair-roll gap 2, and then passes through two groups of grinding rolls 1 to perform the second roll pressing and grinding in the B and C directions respectively. Then, the ground particulate matter is subjected to primary screening to obtain primary particulate matter and primary powder matter. Both the primary particulate matter and the secondary particulate matter are continuously fed in the A direction for roll pressing and grinding. The two grinding rolls 1 for roll grinding in the A direction are kept at room temperature, and hot oil is introduced into the two grinding rolls 1 for roll pressing and grinding in the B and C directions to keep their constant temperature at 80 °C;

[0037] S3: Put the primary powder matter into a hemispherical grinding cavity, extrude the primary powder against the grinding cavity wall through a grinding ball head and perform rotary grinding treatment. Subsequently, secondary screening is carried out to obtain secondary particulate matter and secondary powder matter. The secondary screening method is to let the powder after rotary grinding fall vertically, and then blow it from one side by a blower. The powder is screened according to the different distances it is blown off due to different weights;

[0038] S4: Perform surface grinding treatment on the secondary powder through two flat grinding disks to finally obtain ultrafine powder essence.

[0039] Example 4

[0040] As Figure 1 shown, a multi-stage grinding preparation process for ultrafine powder essence includes the following steps:

[0041] S1: Weigh 2 parts of benzyl alcohol, 2 parts of δ-decalactone, 3 parts of δ-dodecalactone, 20 - 30 parts of furanone, 10 parts of mercaptan, 2 parts of thioacetate, 60 parts of silicon dioxide, 2 parts of ethyl oleate, 0.3 part of vanillin and 1.2 parts of ethyl maltol as raw materials according to mass parts. Use 400 parts of glucose as a carrier agent, mix all components and carry out dissolution and polycondensation reactions under the action of 10 parts of capric acid, 0.5 part of propionic acid, 1 part of butyric acid and 0.5 part of lactic acid as catalysts. Subsequently, concentrate, purify, crystallize and dry to obtain solid particulate matter;

[0042] S2: Feed the solid particulate matter in the A direction of the four pair of grinding rolls 1 distributed in pairs. After the first roll pressing and grinding, it enters the pair-roll gap 2, and then passes through two groups of grinding rolls 1 to perform the second roll pressing and grinding in the B and C directions respectively. Then, the ground particulate matter is subjected to primary screening to obtain primary particulate matter and primary powder matter. Both the primary particulate matter and the secondary particulate matter are continuously fed in the A direction for roll pressing and grinding. The two grinding rolls 1 for roll grinding in the A direction are kept at room temperature, and hot oil is introduced into the two grinding rolls 1 for roll pressing and grinding in the B and C directions to keep their constant temperature at 70 °C;

[0043] S3: Place the primary powder into the hemispherical grinding chamber, and use the grinding ball head to extrude the primary powder against the grinding chamber wall and perform rotary grinding. Subsequently, secondary screening is carried out to obtain secondary particulate matter and secondary powder. The secondary screening method is to let the powder after rotary grinding fall vertically, and then blow air from one side by a blower. Screening is carried out according to the different distances that the powder is blown off due to different weights.

[0044] S4: Perform surface grinding on the secondary powder through two flat grinding discs to finally obtain the ultrafine powder flavor.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-stage grinding preparation process for ultrafine powder flavor, characterized in that, it includes the following steps: S1: Weigh 2-4 parts of benzyl alcohol, 1-2 parts of δ-decalactone, 2-3 parts of δ-dodecalactone, 20-30 parts of furanone, 10-15 parts of mercaptan, 2-3 parts of thioacetate and 40-60 parts of silica as raw materials, use 300-400 parts of glucose as a carrier agent, mix all components and carry out dissolution and polycondensation reactions under the action of an acidic catalyst, then concentrate, purify, crystallize and dry to obtain solid particles; S2: Input the solid particles in the A direction of the four opposed grinding rolls (1), carry out the first roll pressing and grinding, then enter the nip (2), and then carry out the second roll pressing and grinding in the B and C directions respectively by two groups of grinding rolls (1), and conduct primary screening on the ground particles to obtain primary particles and primary powder substances; S3: Put the primary powder substances into a hemispherical grinding cavity, extrude the primary powder against the grinding cavity wall by the grinding ball head and carry out rotary grinding treatment, and then obtain secondary particles and secondary powder substances after secondary screening; S4: Carry out surface grinding treatment on the secondary powder through two flat grinding discs, and finally obtain ultrafine powder flavor.

2. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 1, characterized in that, both the primary particles and the secondary particles obtained in step S2 and step S3 are continuously input in the A direction for roll pressing and grinding.

3. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 1, characterized in that , in step S2, the two grinding rolls (1) for roll grinding in the A direction are kept at room temperature, and a heating medium is introduced into the two grinding rolls (1) for roll pressing and grinding in the B and C directions to keep their temperature constant at 50-80 °C.

4. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 3, characterized in that , there are scrapers (4) and hoppers (3) below the two grinding rolls (1) for roll pressing and grinding in the B and C directions.

5. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 1, characterized in that , the secondary screening method is to let the powder after rotary grinding fall vertically, and blow air from one side by a blower, and screen according to the different distances that the powder is blown off due to different weights.

6. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 1, characterized in that, in step S1, the acidic catalyst includes a mixture of 10-15 parts of capric acid, 0.5-1 part of propionic acid, 1-2 parts of butyric acid and 0.2-0.5 part of lactic acid.

7. A multi-stage grinding preparation process for ultrafine powder flavor according to claim 1, characterized in that, in step S1, 1-2 parts of ethyl oleate, 0.3-0.6 part of vanillin and 0.8-1.2 parts of ethyl maltol are also mixed and added to the raw materials.

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