CN117179307A - Preparation method of beta-carotene microcapsule powder - Google Patents

Preparation method of beta-carotene microcapsule powder Download PDF

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Publication number
CN117179307A
CN117179307A CN202311240353.4A CN202311240353A CN117179307A CN 117179307 A CN117179307 A CN 117179307A CN 202311240353 A CN202311240353 A CN 202311240353A CN 117179307 A CN117179307 A CN 117179307A
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beta
grinding
carotene
controlling
shearing
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阮长明
毛建华
钱凯
梅天勇
王力
刘毅
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Hubei Xinhe Biotechnology Co ltd
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Hubei Xinhe Biotechnology Co ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L33/00—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof
    • A23L33/10—Modifying nutritive qualities of foods; Dietetic products; Preparation or treatment thereof using additives
    • A23L33/105—Plant extracts, their artificial duplicates or their derivatives
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23P—SHAPING OR WORKING OF FOODSTUFFS, NOT FULLY COVERED BY A SINGLE OTHER SUBCLASS
    • A23P10/00—Shaping or working of foodstuffs characterised by the products
    • A23P10/30—Encapsulation of particles, e.g. foodstuff additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs

Abstract

The invention belongs to the technical field of preparation of nutritional products, and discloses a preparation method of beta-carotene microcapsule powder, which comprises the following steps: (1) Placing the beta-carotene crystals into a grinder, and then adding grinding beads, a dispersing agent, a stabilizing agent, an antioxidant and purified water for grinding to obtain a mixture A; (2) Subjecting the mixture A in the step (1) to high-speed shearing to obtain a mixture B; (3) Homogenizing the mixture B in the step (2) under high pressure to obtain a mixture C; (4) And (3) spraying the mixture C in the step (3) under high pressure to prepare granular powder with good fluidity. The beta-carotene microcapsule powder prepared by the invention has bright color, uniform particle size and good fluidity, can be well dispersed in water and grease matrixes, and has wide application fields.

Description

Preparation method of beta-carotene microcapsule powder
Technical Field
The invention belongs to the technical field of preparation of nutritional products, and particularly relates to a preparation method of beta-carotene microcapsule powder.
Background
Carotene is a polyene substance which can be directly converted into vitamin A in human or animal body, is helpful for maintaining the health of eyes and skin, improving night blindness and protecting the body from free radical injury, and is widely used in the fields of food, health products, medicines, animal feeds, etc.
Beta-carotene is a hydrocarbon compound with 8 isoprenoid structures, two ends of the molecule are six-membered rings with two isoprenoid units, the middle is a carbon chain composed of four isoprenoid units, the middle of the molecule is arranged reversely, and conjugated double bond chromophores exist, so that the conjugated double bond chromophores cover all color systems from red to yellow.
The beta-carotene has 3 sources of microbial fermentation, chemical synthesis and plant extraction at present, the purity is more than 98 percent, the melting point is 178-179 ℃, and the beta-carotene has more than 20 isomers, but is mainly in four forms of all-trans, 9-cis, 13-cis and 15-cis, is insoluble in water, slightly soluble in vegetable oil, has medium solubility in aliphatic and aromatic hydrocarbon, is easily dissolved in chloroform, has unstable chemical property, and is easy to generate oxidation reaction during illumination and heating.
The physical properties of the beta-carotene such as indissolvable property and the like make the beta-carotene very difficult in practical application, and at present, the application of the beta-carotene is converted mainly by two ways of organic solvent dissolution and high-temperature grease dissolution, but the two methods have the defects: the organic solvent method can cause the end product to contain solvent residues, and food safety risks can occur; the high-temperature grease dissolving method can change the all-trans structure of the beta-carotene into a cis structure, so that the color of the beta-carotene becomes light, and meanwhile, under the high-temperature condition, the content loss of the beta-carotene is 15% -30%, so that the bioavailability is reduced, the production cost is increased, and the market demand cannot be met.
CN112890192a discloses a beta-carotene microencapsulation process, comprising: (1) Pretreatment of beta-carotene to obtain beta-carotene oil; (2) dissolution of wall material: mixing ethyl cellulose with ethanol solution, uniformly mixing, slowly adding wall material and water phase antioxidant until the wall material and water phase antioxidant are completely dissolved, and obtaining wall material microemulsion; (3) encapsulation of beta-carotene: dropwise adding beta-carotene oil liquid into the wall material microemulsion while stirring until the wall material microemulsion is saturated; adding beta-carotene oil into the rest of the cutting process in a dropwise manner; homogenizing after shearing is finished, and obtaining homogenized liquid; and (4) spray drying to obtain the beta-carotene microcapsule. The process uses a large amount of ethanol, the ethanol belongs to inflammable and explosive articles, special explosion-proof measures are needed in the use process, and meanwhile, environmental pollution is easy to cause; in addition, the shelf life of the product is short, and time limitation is brought to the application of the final product.
CN111903846a discloses a carotenoid microcapsule and a preparation method thereof, the method comprises the following steps: a) Mixing and dissolving carotenoid crystals with an organic solvent to obtain carotenoid solution; b) Introducing the carotenoid solution and the thermal grease into a dispersion system to fully disperse the carotenoid into the thermal grease, and vaporizing the organic solvent to obtain carotenoid mixed dispersion liquid; c) Mixing and emulsifying carotenoid mixed dispersion liquid and protective colloid aqueous solution to obtain emulsion; d) Spray granulating and drying to obtain carotenoid microcapsule. The method is characterized in that the organic solvent is used for dissolution and embedding, so that the solvent residue is necessarily remained in the final product, and the method has certain food safety risk.
CN111904944a discloses a beta-carotene microcapsule preparation and its preparation method, firstly grinding beta-carotene, antioxidant and emulsifier under normal temperature through nano grinder, making the particle size of beta-carotene below 500nm which can be absorbed by organism, then adding filler, stirring and homogenizing, finally spray drying, cooling through fluidized bed and making into powder-like product. However, the application field of the product prepared by the method is livestock and poultry health care medicine, and the product cannot be applied to the fields of human foods and medicines.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a preparation method of beta-carotene microcapsule powder with simple operation steps, low preparation cost and high availability.
In order to achieve the purpose of the invention, the inventor has diligently studied through a large amount of experiments, and finally obtains the following technical scheme: a method for preparing beta-carotene microcapsule powder, the method comprising the steps of:
(1) Placing the beta-carotene crystals into a grinder, and then adding grinding beads, a dispersing agent, a stabilizing agent, an antioxidant and purified water for grinding to obtain a mixture A;
(2) Subjecting the mixture A in the step (1) to high-speed shearing to obtain a mixture B;
(3) Homogenizing the mixture B in the step (2) under high pressure to obtain a mixture C;
(4) Spraying the mixture C in the step (3) under high pressure to prepare granular powder with good fluidity;
wherein the dosage of each raw and auxiliary material is 15-25 wt% of beta-carotene, 70-80 wt% of dispersing agent, 1-3 wt% of stabilizer and 0.5-2 wt% of antioxidant;
in the step (1), the dispersing agent is at least one selected from sodium starch octenyl succinate, sodium caseinate, acacia, resistant dextrin, maltodextrin and solid corn syrup; the stabilizer is at least one of mono-diglycerol fatty acid ester, span 60 and polyglycerol fatty acid ester; the antioxidant is at least one selected from vitamin E, sodium ascorbate and BHT; the diameter of the grinding beads is 0.1-1.0 mm;
the shearing speed in the step (2) is 18000-30000 rpm, and the shearing time is 5-20 min;
the primary homogenizing pressure in the step (3) is 2-5 MPa, the secondary homogenizing pressure is 30-40 MPa, and the homogenizing time is 5-60 min;
the spraying pressure in the step (4) is 25-35 MPa; the air inlet temperature is 150-170 ℃, and the air outlet temperature is 50-80 ℃.
Further preferably, the method for producing a beta-carotene microcapsule powder as described above, wherein the grinding beads in step (1) are at least one selected from the group consisting of zirconia, silicon nitride, polyurethane and tungsten carbide.
Further preferably, the method for preparing the beta-carotene microcapsule powder as described above, wherein in the step (1), the grinding rotation speed is set to 5000rpm, the material temperature is controlled to be less than or equal to 50 ℃, and the grinding is performed for 3 hours.
Further preferably, the method for preparing beta-carotene microcapsule powder as described above, wherein in the step (1), the dispersing agent is selected from any one of the following combinations: a. sodium starch octenyl succinate and maltodextrin; b. acacia and resistant dextrin; c. sodium caseinate and solid corn syrup.
In a preferred embodiment of the present invention, a process for the preparation of beta-carotene microcapsule powder as described above, comprises the steps of:
(1) 201kg of beta-carotene crystals were added to a mill, followed by 499kg of sodium starch octenyl succinate, 270kg of maltodextrin, 20kg of span 60, 10kg of vitamin E,1000kg of water; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
In another preferred embodiment of the present invention, a process for the preparation of beta-carotene microcapsule powder as described above, comprises the steps of:
(1) 201kg of beta-carotene crystals are added into a grinder, and then 550kg of Arabic gum, 223kg of resistant dextrin, 20kg of mono-diglycerol fatty acid ester, 6kg of sodium ascorbate and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
In another preferred embodiment of the present invention, a process for the preparation of beta-carotene microcapsule powder as described above, comprises the steps of:
(1) 201kg of beta-carotene crystals are added to a grinder, and then 555kg of sodium caseinate, 219kg of solid corn syrup, 20kg of polyglycerol fatty acid ester, 5kg of BHT and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
Compared with the prior art, the beta-carotene microcapsule powder has the following advantages and remarkable progress:
(1) The beta-carotene microcapsule powder prepared by the invention has bright color, uniform particle size and good fluidity, can be well dispersed in water and grease matrixes, and has wide application fields.
(2) The preparation process adopts low-temperature pretreatment and high-temperature instantaneous drying process, avoids the isomerization conversion of the all-trans structure of the beta-carotene, maintains the original color and luster and improves the bioavailability.
(3) The invention has less beta-carotene content loss in the production process, and greatly saves the production cost in the industrial production process.
(4) The preparation process of the invention has no participation of any organic solvent, is suitable for the current environment-friendly industrial production, and ensures the food safety.
Detailed Description
The invention will be further described in detail by the following detailed description, which is not to be construed as limiting the invention to the particular embodiments, but rather to the contrary, the examples are intended to cover all technical and procedural steps or conditions described in the literature in this field or in accordance with the product specifications. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1: preparation of beta-carrot microcapsule powder
201kg of beta-carotene crystals were added to a mill, followed by 499kg of sodium starch octenyl succinate, 270kg of maltodextrin, 20kg of span 60, 10kg of vitamin E,1000kg of water; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
and (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
The material C is tested by a laser particle size analyzer, and 99 percent of the beta-carotene has the particle size of 299nm, which exceeds the particle size of the beta-carotene prepared by the prior art. The small particle size of the beta-carotene is more favorable for embedding the microcapsules, the embedding rate of the beta-carotene powder of the product can reach 99.8 percent, and the highest embedding rate of the beta-carotene powder of the product can only reach 90 percent in the prior art.
Example 2: preparation of beta-carrot microcapsule powder
201kg of beta-carotene crystals are added into a grinder, and then 550kg of Arabic gum, 223kg of resistant dextrin, 20kg of mono-diglycerol fatty acid ester, 6kg of sodium ascorbate and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
and (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
The content of beta-carotene in the beta-carotene crystal was 99.5% by HPLC, wherein the content of all-trans beta-carotene was 95%; the content of beta-carotene in the microcapsule powder is 20.06%, wherein the content of all-trans beta-carotene is 94.7%; the embedding rate of the beta-carotene powder can reach 99.88 percent; therefore, the product of the invention better protects the original molecular structure of the beta-carotene in the production and processing process, so that the beta-carotene can better play a role in coloring, and simultaneously better retains the nutritive value of the beta-carotene.
Example 3: preparation of beta-carrot microcapsule powder
201kg of beta-carotene crystals are added to a grinder, and then 555kg of sodium caseinate, 219kg of solid corn syrup, 20kg of polyglycerol fatty acid ester, 5kg of BHT and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
and (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
The beta-carotene content in the microcapsule powder which is designed to be 20.1 percent is 20.05 percent by using HPLC detection, but the equivalent content design increases 15 percent of loss if high-temperature oil dissolution is used, and the raw material cost of the vegetable oil is also required to be increased, and the method can save at least 15 percent of raw material cost; in addition, the embedding rate of the beta-carotene powder can reach 99.92 percent.
Comparative example 1: preparation of beta-carrot microcapsule powder
230kg of beta-carotene crystal is dissolved in 300kg of vegetable oil, the temperature is raised to 160 ℃, nitrogen is filled for protection and stirring is carried out until the crystal is completely dissolved to obtain a material A, 340kg of sodium starch octenyl succinate, 100kg of maltodextrin, 20kg of span 60 and 10kg of vitamin E are dissolved in 1000kg of water, the temperature is raised to 70 ℃ to fully dissolve the material B, and then A, B is sheared, homogenized and the like to obtain a material C;
and (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
The beta-carotene content in the microcapsule powder designed to be 23.0% was 20.06% by HPLC detection, the beta-carotene powder embedding rate was 92.2%, the powder was not orange yellow, and the beta-carotene content was 14.7% lost under high temperature conditions; under the same target content design conditions, comparative example 1 would require more than 29kg of beta-carotene crystals, with 15% more economic cost than would be required.
Comparative example 2: preparation of beta-carrot microcapsule powder
201kg of beta-carotene crystals are added to a grinder, and then 555kg of sodium caseinate, 219kg of solid corn syrup, 20kg of polyglycerol fatty acid ester, 5kg of BHT and 1000kg of water are added; adding 85% of 0.4mm grinding beads into a grinding barrel, setting the grinding rotating speed to 3000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 12000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a mixed material B;
and (3) spray drying the material B, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying.
The beta-carotene content in the microcapsule powder designed to be 20.1% by HPLC detection was 20.04%, and the carotene powder embedding rate was 90.1%, with a pale red color.
Comparative example 3: preparation of beta-carrot microcapsule powder
201kg of beta-carotene crystals are added to a grinder, and then 555kg of sodium caseinate, 219kg of solid corn syrup, 20kg of polyglycerol fatty acid ester, 5kg of BHT and 1000kg of water are added; adding 85% of 0.4mm grinding beads into a grinding barrel, setting the grinding rotating speed to 3000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 12000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a mixed material B;
homogenizing the material B under 50MPa for 30min to obtain material C, spray drying the material C at 160deg.C for air inlet and 70deg.C for air outlet, spraying under 30MPa, and collecting carrot powder.
The beta-carotene content in the microcapsule powder designed to be 20.1% was 20.05% by HPLC, and the carotene powder embedding rate was 88.6% with a pale red color.
Comparative example 4: preparation of beta-carrot microcapsule powder
Adding 201kg of beta-carotene crystals into a grinder, and then adding 555kg of sodium starch octenyl succinate, 219kg of maltodextrin, 20kg of polyglycerol fatty acid ester, 5kg of vitamin E and 1000kg of water; adding 85% of 0.4mm grinding beads into a grinding barrel, setting the grinding rotating speed to 3000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
starting a shearing machine to adjust the rotating speed to 12000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a mixed material B;
homogenizing the material B, wherein the primary homogenizing pressure is 15MPa, the secondary homogenizing pressure is 50MPa, homogenizing for 30min to obtain a material C, spray drying the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spraying pressure is 30MPa, and collecting carrot powder after spraying.
The beta-carotene content in the microcapsule powder designed to be 20.1% was 20.03% by HPLC detection, and the carotene powder embedding rate was 93.6%, with a pale red color.
In the different examples and comparative examples, the comparison of the color, embedding rate and economic cost of the product is shown in table 1, and as can be seen from table 1, the color, embedding rate and economic cost of the examples are all better than those of the comparative examples, which shows that the preparation method of the invention has certain advantages in improving the quality of the product and saving the economic cost.
TABLE 1 comparison of the content, color, embedding Rate and loss of the products of the different Processes
Sample source Content of Color of Embedding rate Loss amount
Example 1 20.06％ Bright red color 99.8％ 1kg
Example 2 20.06％ Bright red color 99.9％ 1kg
Example 3 20.05％ Bright red color 99.9％ 1kg
Comparative example 1 20.06％ Orange yellow 92.2％ 30kg
Comparative example 2 20.04％ Pale red color 90.1％ 1kg
Comparative example 3 20.05％ Pale red color 89.8％ 1kg
Comparative example 4 20.03％ Light red color 93.6％ 1kg
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications according to the technical scheme and the inventive concept of the present invention.

Claims (7)

1. A method for preparing beta-carotene microcapsule powder, which is characterized by comprising the following steps:
(1) Placing the beta-carotene crystals into a grinder, and then adding grinding beads, a dispersing agent, a stabilizing agent, an antioxidant and purified water for grinding to obtain a mixture A;
(2) Subjecting the mixture A in the step (1) to high-speed shearing to obtain a mixture B;
(3) Homogenizing the mixture B in the step (2) under high pressure to obtain a mixture C;
(4) Spraying the mixture C in the step (3) under high pressure to prepare granular powder with good fluidity;
wherein the dosage of each raw and auxiliary material is 15-25 wt% of beta-carotene, 70-80 wt% of dispersing agent, 1-3 wt% of stabilizer and 0.5-2 wt% of antioxidant;
in the step (1), the dispersing agent is at least one selected from sodium starch octenyl succinate, sodium caseinate, acacia, resistant dextrin, maltodextrin and solid corn syrup; the stabilizer is at least one of mono-diglycerol fatty acid ester, span 60 and polyglycerol fatty acid ester; the antioxidant is at least one selected from vitamin E, sodium ascorbate and BHT; the diameter of the grinding beads is 0.1-1.0 mm;
the shearing speed in the step (2) is 18000-30000 rpm, and the shearing time is 5-20 min;
the primary homogenizing pressure in the step (3) is 2-5 MPa, the secondary homogenizing pressure is 30-40 MPa, and the homogenizing time is 5-60 min;
the spraying pressure in the step (4) is 25-35 MPa; the air inlet temperature is 150-170 ℃, and the air outlet temperature is 50-80 ℃.
2. The method for producing a beta-carotene microcapsule powder according to claim 1, wherein the grinding beads in step (1) are at least one selected from the group consisting of zirconia, silicon nitride, polyurethane and tungsten carbide.
3. The process for preparing a beta-carotene microcapsule powder according to claim 1, wherein in the step (1), the grinding speed is set to 5000rpm, the material temperature is controlled to be not more than 50 ℃, and the grinding is carried out for 3 hours.
4. The method for preparing beta-carotene microcapsule powder according to claim 1, wherein in the step (1), the dispersant is selected from any one of the following combinations: a. sodium starch octenyl succinate and maltodextrin; b. acacia and resistant dextrin; c. sodium caseinate and solid corn syrup.
5. A process for the preparation of a beta-carotene microcapsule powder according to any of claims 1-4, which comprises the steps of:
(1) 201kg of beta-carotene crystals were added to a mill, followed by 499kg of sodium starch octenyl succinate, 270kg of maltodextrin, 20kg of span 60, 10kg of vitamin E,1000kg of water; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
6. A process for the preparation of a beta-carotene microcapsule powder according to any of claims 1-4, which comprises the steps of:
(1) 201kg of beta-carotene crystals are added into a grinder, and then 550kg of Arabic gum, 223kg of resistant dextrin, 20kg of mono-diglycerol fatty acid ester, 6kg of sodium ascorbate and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
7. A process for the preparation of a beta-carotene microcapsule powder according to any of claims 1-4, which comprises the steps of:
(1) 201kg of beta-carotene crystals are added to a grinder, and then 555kg of sodium caseinate, 219kg of solid corn syrup, 20kg of polyglycerol fatty acid ester, 5kg of BHT and 1000kg of water are added; adding 85% of 0.1mm grinding beads into a grinding barrel, setting the grinding rotation speed to 5000rpm, controlling the temperature of the materials to be less than or equal to 50 ℃, grinding for 3 hours, and collecting a material A after grinding;
(2) Starting a shearing machine to adjust the rotating speed to 26000rpm, slowly adding the material A into a shearing tank, and shearing for 10min to obtain a material B;
(3) Mixing the material B under high pressure by a homogenizer, controlling the primary homogenizing pressure to be 5MPa, controlling the secondary homogenizing pressure to be 50MPa, controlling the material temperature to be less than or equal to 50 ℃, and circularly homogenizing for 30min to obtain a material C;
(4) And (3) carrying out spray drying on the material C, wherein the air inlet temperature is 160 ℃, the air outlet temperature is 70 ℃, the spray pressure is 30MPa, and collecting carrot powder after spraying is completed.
CN202311240353.4A 2021-11-16 2021-11-16 Preparation method of beta-carotene microcapsule powder Pending CN117179307A (en)

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