CN111955736A - Walnut oil microcapsule powder and preparation process thereof - Google Patents

Walnut oil microcapsule powder and preparation process thereof Download PDF

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Publication number
CN111955736A
CN111955736A CN202010859108.1A CN202010859108A CN111955736A CN 111955736 A CN111955736 A CN 111955736A CN 202010859108 A CN202010859108 A CN 202010859108A CN 111955736 A CN111955736 A CN 111955736A
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walnut
walnut oil
water phase
spray drying
microcapsule powder
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CN111955736B (en
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张晓敏
尚世辉
庞越华
唐海东
贺雪峰
董建国
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Three Main Grain Hotan Industrial Co ltd
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Three Main Grain Hotan Industrial 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
    • A23L33/115—Fatty acids or derivatives thereof; Fats or oils
    • 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
    • A23L29/00—Foods or foodstuffs containing additives; Preparation or treatment thereof
    • A23L29/10—Foods or foodstuffs containing additives; Preparation or treatment thereof containing emulsifiers
    • 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
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3454—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of liquids or solids
    • A23L3/3463—Organic compounds; Microorganisms; Enzymes
    • A23L3/3562—Sugars; Derivatives thereof
    • 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
    • A23L33/17—Amino acids, peptides or proteins
    • A23L33/18—Peptides; Protein hydrolysates
    • 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
    • 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

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nutrition Science (AREA)
  • Mycology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Molecular Biology (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Microbiology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cosmetics (AREA)

Abstract

The invention relates to walnut oil microcapsule powder and a preparation process thereof, wherein the preparation process comprises the following steps: (1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; (2) and (2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder. According to the process provided by the invention, the design of the composite wall material and the process is adopted, and the coupling effect between the composite wall material and each process step is utilized, so that the preparation of the walnut oil microcapsule powder with the particle size of submicron order from the oil-soluble walnut oil is realized, the process cost is low, the product has good emulsifying property, can be rapidly and uniformly dispersed in cold water, is stable, has no floating oil, precipitate and cup sticking when being applied, and simultaneously, because no organic solvent is introduced in the preparation process, the product has no organic solvent residue, is safe and environment-friendly, and is suitable for large-scale industrial production.

Description

Walnut oil microcapsule powder and preparation process thereof
Technical Field
The invention relates to the field of microcapsule powder processing, in particular to walnut oil microcapsule powder and a preparation process thereof.
Background
Walnut has thin shell, large fruit and high oil content, and is known as "longevity fruit", and Xinjiang thin-skin walnut is also known as walnut and walnut. The foreign names are as follows: "Strong food" is a nut rich in nutrition, and is called as: "Wansuizi" and "Changshouguo". According to modern scientific analysis, the walnut kernel contains 15.4 percent of protein, 40 to 63 percent of fat, 10 percent of carbohydrate, and rich nutrient substances such as calcium, phosphorus, iron, zinc, carotene, riboflavin, vitamin A, B, C, E and the like. Walnut oil contains a large amount of unsaturated fatty acids, linoleic acid, linolenic acid and 18 kinds of olefine acids.
The walnut oil is rich in nutritive value, contains essential fatty acids of linoleic acid, linolenic acid and the like for a human body, also contains trace fatty acids of DHA, EPA and the like, and nutrient components of vitamin E, sterol, squalene and the like, has the flavone content obviously higher than that of popular vegetable oil such as peanut oil, corn oil and the like, cannot be subjected to long-time high-temperature treatment due to easy oxidation of the walnut oil, and has short shelf life. Therefore, the walnut oil needs to be further processed by a technology, and the walnut oil is microencapsulated.
In recent years, the heat microcapsule technology researched by processing and utilizing vegetable oil is to form capsules by selecting proper capsule wall materials to wrap heat-sensitive, easily oxidized or volatile substances in the capsule wall materials, so that the heat-sensitive, easily oxidized or volatile substances are protected, the quality of products is improved, the shelf life of the products is prolonged, meanwhile, the oil state is converted into the powder state, the powder state is more easily accepted by consumers from oil drinking to powder flushing, and the edible vegetable oil is convenient to eat.
CN108651638A discloses a preparation method of walnut oil microcapsule powder, weighing wall materials, adding walnut oil into an aqueous solution to form a preparation liquid, heating while stirring, transferring the preparation liquid to a normal pressure shearing machine for shearing after a period of time, placing the preparation liquid in a homogenizer after shearing is finished, spray-drying the homogenized preparation liquid, and obtaining powdery solid in the bottom of a lower tower of a cyclone separator as the walnut oil microcapsule powder. The walnut oil is used as a core material, the walnut oil is wrapped by the wall material, and the microencapsulated powder is prepared after drying, the embedding rate is as high as about 80%, so that the active ingredients in the walnut oil are effectively protected, the oxidative deterioration of the active ingredients in the walnut oil is avoided, and the storage and the transportation are convenient. In addition, the invention has the advantages of less raw materials, simple preparation process and easy industrial production.
CN105996040A discloses a microcapsule powder containing linseed oil and walnut oil, which is prepared from the following raw materials in parts by weight: 1-1000 parts of wall material, 5000-50000 parts of core material, 10-1000 parts of emulsifier and 1-200 parts of stabilizer, wherein the wall material comprises one or more of dextrin, starch and protein, and the core material comprises linseed oil and walnut oil in a weight ratio of 1-2: 1. The invention also provides a preparation method of the microcapsule powder, which comprises the steps of sequentially preparing a water phase and an oil phase, emulsifying, homogenizing and finally spray drying to obtain a finished product. The invention has the beneficial effects that: the linseed oil and the walnut oil are compounded according to a certain proportion and are emulsified to prepare the oil-in-water type microcapsule powder, so that the oil-in-water type microcapsule powder is easy to store, long in shelf life, balanced in nutrition, free of adding an antioxidant and beneficial to human health.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide walnut oil microcapsule powder and a preparation process thereof, the preparation process provided by the invention prepares oil-soluble walnut oil into the walnut oil microcapsule powder with the particle size of submicron, the process cost is low, the product has good emulsifying property, can be rapidly and uniformly dispersed in cold water, is stable, has no floating oil, precipitate and cup sticking when in use, and simultaneously, because no organic solvent is introduced in the preparation process, the product has no organic solvent residue, is safe and environment-friendly, and is suitable for large-scale industrial production.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a preparation process of walnut oil microcapsule powder, which comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution;
(2) and (2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder.
According to the process provided by the invention, the design of the composite wall material and the process is adopted, and the coupling effect between the composite wall material and each process step is utilized, so that the preparation of the walnut oil microcapsule powder with the particle size of submicron order from the oil-soluble walnut oil is realized, the process cost is low, the product has good emulsifying property, can be rapidly and uniformly dispersed in cold water, is stable, has no floating oil, precipitate and cup sticking when being applied, and simultaneously, because no organic solvent is introduced in the preparation process, the product has no organic solvent residue, is safe and environment-friendly, and is suitable for large-scale industrial production.
As a preferable technical scheme of the invention, the composite wall material in the step (1) is a mixture of cassava modified starch and maltodextrin.
Preferably, the mixture has a mass ratio of tapioca starch to maltodextrin of (1.5-2.5):1, and may be, for example, 1.5:1, 1.6:1, 1.7:1, 1.8:1, 1.9:1, 2:1, 2.1:1, 2.2:1, 2.3:1, 2.4:1 or 2.5:1, but is not limited to the recited values, and other values not recited within this range are equally applicable.
Preferably, the concentration of the composite wall material in the aqueous phase in step (1) is 30-45% by mass, for example, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44% or 45% by mass, but not limited to the enumerated values, and other unrecited values in the range are also applicable.
According to the invention, the composite wall material of the cassava deformation starch and the maltodextrin is adopted, the solid concentration of a solution system is improved by utilizing the synergistic effect of the cassava deformation starch and the maltodextrin, the good supporting and protecting effects can be achieved, the shell with good compactness and high strength can be formed, and the embedding and emulsifying effects in the walnut oil microcapsule powder are improved by controlling the proportion of the cassava deformation starch and the maltodextrin in the composite wall material.
The variable trend of the process parameters is measured by the walnut oil content, the unsaturated fatty acid content, the moisture content, the bulk density, the surface oil and the average particle size of the walnut oil microcapsule powder, and the microencapsulation effect is measured by the walnut oil content and the surface oil; the quality of the walnut oil microcapsule powder is measured by the content of unsaturated fatty acid, the content of water, the bulk density and the average grain diameter.
As a preferable technical scheme of the invention, the auxiliary materials in the step (1) comprise walnut essence, sucralose and walnut peptide.
Preferably, the concentration of the walnut essence in the aqueous phase in the step (1) is 0.07-0.15% by mass, for example, 0.07%, 0.08%, 0.09%, 0.1%, 0.11%, 0.12%, 0.13%, 0.14% or 0.15%, etc., but not limited to the enumerated values, and other non-enumerated values in the range are also applicable.
Preferably, the sucralose concentration in the aqueous phase in step (1) is 0.01-0.02% by mass, and may be, for example, 0.01%, 0.011%, 0.012%, 0.013%, 0.014%, 0.015%, 0.016%, 0.017%, 0.018%, 0.019%, or 0.02%, but is not limited to the values listed, and other values not listed in this range are also applicable.
Preferably, the concentration of the walnut peptide in the aqueous phase in step (1) is 2-5% by mass, for example, 2%, 2.5%, 3%, 3.5%, 4%, 4.5% or 5%, etc., but not limited to the recited values, and other values not recited in the range are also applicable.
According to the walnut oil microcapsule powder, the emulsifying property of the walnut oil microcapsule powder is improved by adding the walnut peptide, the oil content of the microcapsule powder is improved, the surface oil content is reduced, the quality of the walnut oil microcapsule powder is improved, the comprehensive performance of the nutrition function of the walnut oil microcapsule powder is enhanced by the compounding synergistic effect of the walnut peptide and the walnut oil, the main functions of the walnut are provided by grease and protein, the walnut peptide is extracted from the protein, the walnut peptide molecules are easy to absorb by human bodies, the immunity is improved, and the like, and the walnut oil microcapsule powder obtained by compounding is full of nutrition and medicinal functions.
As a preferable technical scheme of the invention, the walnut oil core material in the step (1) is refined walnut oil.
Preferably, the mass ratio of the aqueous phase to the refined walnut oil in step (1) is (2-5):1, and may be, for example, 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1 or 5:1, but is not limited to the recited values, and other values not recited in this range are also applicable.
As a preferred embodiment of the present invention, the shearing rate of the shearing treatment in the step (1) is 1500-2500r/min, and may be, for example, 1500r/min, 1600r/min, 1700r/min, 1800r/min, 1900r/min, 2000r/min, 2100r/min, 2200r/min, 2300r/min, 2400r/min or 2500r/min, but is not limited to the values listed above, and other values not listed in this range are also applicable.
Preferably, the shearing time in step (1) is 20-40min, such as 20min, 22min, 24min, 26min, 28min, 30min, 32min, 34min, 36min, 38min or 40min, but not limited to the recited values, and other values not recited in the range are also applicable.
Preferably, the temperature of the shearing treatment in the step (1) is 30 to 45 ℃, for example, 30 ℃, 31 ℃, 32 ℃, 33 ℃, 34 ℃, 35 ℃, 36 ℃, 37 ℃, 38 ℃, 39 ℃, 40 ℃, 41 ℃, 42 ℃, 43 ℃, 44 ℃ or 45 ℃ and the like, but not limited to the recited values, and other values not recited in the range are also applicable.
As a preferred embodiment of the present invention, the temperature for homogenization in step (2) is 40 to 60 ℃ and may be, for example, 40 ℃, 42 ℃, 44 ℃, 46 ℃, 48 ℃, 50 ℃, 52 ℃, 54 ℃, 56 ℃, 58 ℃ or 60 ℃, but is not limited to the values listed, and other values not listed in this range are also applicable.
Preferably, the pressure for homogenization in step (2) is 30 to 50MPa, and may be, for example, 30MPa, 32MPa, 34MPa, 36MPa, 38MPa, 40MPa, 42MPa, 44MPa, 46MPa, 48MPa or 50MPa, etc., but is not limited to the recited values, and other values not recited in the range are also applicable.
Preferably, the homogenization in step (2) is performed at least 3 times, for example, 3 times, 4 times, 5 times, 6 times, 7 times, 8 times, 9 times, 10 times, 11 times, or 12 times, etc., but not limited to the recited values, and other values not recited in the range are also applicable.
In a preferred embodiment of the present invention, the drying method in step (2) is spray drying.
In a preferred embodiment of the present invention, the temperature of the inlet air for the spray drying is 150 ℃ to 170 ℃, and may be, for example, 150 ℃, 152 ℃, 154 ℃, 156 ℃, 158 ℃, 160 ℃, 162 ℃, 164 ℃, 166 ℃, 168 ℃, or 170 ℃, but is not limited to the values listed above, and other values not listed in this range are also applicable.
Preferably, the air outlet temperature of the spray drying is 70-90 ℃, for example, 70 ℃, 72 ℃, 74 ℃, 76 ℃, 78 ℃, 80 ℃, 82 ℃, 84 ℃, 86 ℃, 88 ℃ or 90 ℃ and the like, but not limited to the recited values, and other values not recited in the range are also applicable.
Preferably, the frequency of the high pressure pump in the spray drying is 10-30Hz, such as 10Hz, 12Hz, 14Hz, 16Hz, 18Hz, 20Hz, 22Hz, 24Hz, 26Hz, 28Hz or 30Hz, but not limited to the values listed, and other values not listed in this range are equally applicable.
Preferably, the atomization speed in the spray drying is 25-35r/min, such as 25r/min, 26r/min, 27r/min, 28r/min, 29r/min, 30r/min, 31r/min, 32r/min, 33r/min, 34r/min or 35r/min, but not limited to the recited values, and other values not recited in this range are equally applicable.
As a preferable technical scheme of the invention, the preparation process comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is (1.5-2.5) to 1; the mass percentage concentration of the composite wall material in the water phase is 30-45%; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.07-0.15%; the mass percentage concentration of the sucralose in the water phase is 0.01-0.02%; the mass percentage concentration of the walnut peptide in the water phase is 2-5%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is (2-5) to 1; the shearing speed of the shearing treatment is 1500-; the time of the shearing treatment is 20-40 min;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the homogenizing temperature is 40-60 ℃; the pressure for homogenizing is 30-50 MPa; the homogenization is carried out at least 3 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 150-170 ℃; the air outlet temperature of the spray drying is 70-90 ℃; the frequency of the high-pressure pump in the spray drying is 10-30 Hz; the atomization rotating speed in the spray drying is 25-35 r/min.
In a second aspect, the invention provides walnut oil microcapsule powder obtained by the preparation process of the first aspect.
Compared with the prior art, the invention has the following beneficial effects:
(1) according to the process provided by the invention, the composite wall material and the design of the process are adopted, and the coupling effect between the composite wall material and each process step is utilized, so that the oil-soluble walnut oil is prepared into the walnut oil microcapsule powder with the particle size of submicron.
(2) According to the invention, the composite wall material of the cassava deformation starch and the maltodextrin is adopted, the solid concentration of a solution system is improved by utilizing the synergistic effect of the cassava deformation starch and the maltodextrin, the good supporting and protecting effects can be achieved, the shell with good compactness and high strength can be formed, and the embedding rate and the emulsifying effect in the walnut oil microcapsule powder are improved by controlling the proportion of the cassava deformation starch and the maltodextrin in the composite wall material. Meanwhile, in the invention, the emulsifying property of the walnut oil microcapsule powder is improved by adding the walnut peptide, the oil content of the microcapsule powder is improved, the surface oil content is reduced, the quality of the walnut oil microcapsule powder is improved, and the comprehensive performance of the nutrition function of the walnut oil microcapsule powder is enhanced by the compounding synergistic effect of the walnut peptide and the walnut oil.
(3) The process cost is low, the emulsifying property of the product is good, the product can be rapidly and uniformly dispersed in cold water, the product is stable, floating oil, sediment and cup sticking are avoided during application, and meanwhile, the organic solvent is not introduced in the preparation process, so that the product is free of organic solvent residue, safe and environment-friendly, and suitable for large-scale industrial production.
Detailed Description
To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:
example 1
The embodiment provides a preparation process of walnut oil microcapsule powder, which comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is 2: 1; the mass percentage concentration of the composite wall material in the water phase is 40%; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.1%; the mass percentage concentration of the sucralose in the water phase is 0.01 percent; the mass percentage concentration of the walnut peptide in the water phase is 4%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is 3: 1; the shearing speed of the shearing treatment is 2000 r/min; the time of the shearing treatment is 30 min;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the temperature of homogenization is 50 ℃; the pressure intensity of the homogenization is 40 MPa; the homogenization is carried out for 3 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 160 ℃; the air outlet temperature of the spray drying is 80 ℃; the frequency of the high-pressure pump in the spray drying is 20 Hz; the atomization rotating speed in the spray drying is 30 r/min.
The indexes of the obtained walnut oil microcapsule powder are detailed in table 1.
Example 2
The embodiment provides a preparation process of walnut oil microcapsule powder, which comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is 1.5: 1; the mass percentage concentration of the composite wall material in the water phase is 45%; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.07%; the mass percentage concentration of the sucralose in the water phase is 0.02 percent; the mass percentage concentration of the walnut peptide in the water phase is 5%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is 2: 1; the shearing speed of the shearing treatment is 1500 r/min; the time of the shearing treatment is 20 min;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the temperature of the homogenization is 40 ℃; the pressure of the homogenization is 30 MPa; the homogenization is carried out for 4 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 170 ℃; the air outlet temperature of the spray drying is 70 ℃; the frequency of the high-pressure pump in the spray drying is 30 Hz; the atomization rotating speed in the spray drying is 25 r/min.
The indexes of the obtained walnut oil microcapsule powder are detailed in table 1.
Example 3
The embodiment provides a preparation process of walnut oil microcapsule powder, which comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is 2.5: 1; the mass percentage concentration of the composite wall material in the water phase is 35 percent; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.15%; the mass percentage concentration of the sucralose in the water phase is 0.01 percent; the mass percentage concentration of the walnut peptide in the water phase is 2%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is 5: 1; the shearing speed of the shearing treatment is 2500 r/min; the time of the shearing treatment is 40 min;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the temperature of the homogenization is 60 ℃; the pressure of the homogenization is 50 MPa; the homogenization is carried out for 3 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 150 ℃; the air outlet temperature of the spray drying is 90 ℃; the frequency of the high-pressure pump in the spray drying is 10 Hz; the atomization rotating speed in the spray drying is 35 r/min.
The indexes of the obtained walnut oil microcapsule powder are detailed in table 1.
Example 4
The embodiment provides a preparation process of walnut oil microcapsule powder, which comprises the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is 2.2: 1; the mass percentage concentration of the composite wall material in the water phase is 30 percent; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.12%; the mass percentage concentration of the sucralose in the water phase is 0.013%; the mass percentage concentration of the walnut peptide in the water phase is 3.7%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is 4: 1; the shearing speed of the shearing treatment is 1750/min; the time of the shearing treatment is 36 min;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the temperature of homogenization is 55 ℃; the pressure of the homogenization is 37 MPa; the homogenization is carried out for 3 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 157 ℃; the air outlet temperature of the spray drying is 87 ℃; the frequency of the high-pressure pump in the spray drying is 17 Hz; the atomization rotating speed in the spray drying is 27 r/min.
The indexes of the obtained walnut oil microcapsule powder are detailed in table 1.
Comparative example 1
The only difference from example 1 is that the composite wall material without maltodextrin was replaced by an equivalent amount of tapioca modified starch. The walnut oil has poor emulsifying effect and poor compactness of the microcapsule powder, and the oil content and the quality of the walnut oil microcapsule powder are reduced.
Comparative example 2
The only difference from example 1 is that the mass ratio of tapioca starch and maltodextrin is 1: 1. The emulsification effect of the walnut oil is not good, and the embedding effect of the microcapsule powder formed after spray drying is not good.
Comparative example 3
The only difference from example 1 is that the mass ratio of tapioca starch and maltodextrin is 3: 1. The compactness of the microcapsule powder is poor, and the embedding effect of the microcapsule powder is poor.
Comparative example 4
The only difference from example 1 is that the concentration of the composite wall material in the phase is 50% by mass. The microcapsules with complete structures are difficult to form, so that the embedding rate of the walnut oil microcapsule powder is reduced.
TABLE 1 indices of walnut oils obtained in the examples
Figure BDA0002647404910000111
It can be known from the results of the above examples and comparative examples that, by the process provided by the present invention, the design of the composite wall material and the process is adopted, and the coupling effect between the composite wall material and each process step is utilized, so that the preparation of the walnut oil microcapsule powder with the particle size of submicron order from the oil-soluble walnut oil is realized, the process cost is low, the emulsifying property of the product is good, the product can be rapidly and uniformly dispersed in cold water, and the product is stable, and has no floating oil, precipitation and cup sticking when in use, and meanwhile, because no organic solvent is introduced in the preparation process, the product has no organic solvent residue, is safe and environment-friendly, and is suitable for large-scale industrial production.
The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (10)

1. The preparation process of the walnut oil microcapsule powder is characterized by comprising the following steps:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution;
(2) and (2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder.
2. The preparation process of claim 1, wherein the composite wall material in step (1) is a mixture of tapioca modified starch and maltodextrin;
preferably, the mass ratio of the tapioca deformed starch to the maltodextrin in the mixture is (1.5-2.5): 1;
preferably, the mass percentage concentration of the composite wall material in the aqueous phase in the step (1) is 30-45%.
3. The preparation process according to claim 1 or 2, wherein the auxiliary materials in the step (1) comprise walnut essence, sucralose and walnut peptide;
preferably, the mass percent concentration of the walnut essence in the water phase in the step (1) is 0.07-0.15%;
preferably, the mass percent concentration of the sucralose in the aqueous phase in the step (1) is 0.01-0.02%;
preferably, the mass percentage concentration of the walnut peptide in the water phase in the step (1) is 2-5%.
4. The process according to any one of claims 1 to 3, wherein the walnut oil core material of step (1) is refined walnut oil;
preferably, the mass ratio of the water phase to the refined walnut oil in the step (1) is (2-5): 1.
5. The process according to any one of claims 1 to 4, wherein the shear rate of the shearing treatment in step (1) is 1500-;
preferably, the time of the shearing treatment in the step (1) is 20-40 min;
preferably, the temperature of the shearing treatment in step (1) is 30-45 ℃.
6. The process according to any one of claims 1 to 5, wherein the temperature for homogenization in step (2) is 40 to 60 ℃;
preferably, the pressure for homogenizing in the step (2) is 30-50 MPa;
preferably, said homogenizing of step (2) is performed at least 3 times.
7. The process according to any one of claims 1 to 6, wherein the drying in step (2) is spray drying.
8. The process according to claim 7, wherein the inlet temperature of the spray drying is 150-170 ℃;
preferably, the air outlet temperature of the spray drying is 70-90 ℃;
preferably, the frequency of the high-pressure pump in the spray drying is 10-30 Hz;
preferably, the atomization rotating speed in the spray drying is 25-35 r/min.
9. The process according to any one of claims 1 to 8, wherein the process comprises the steps of:
(1) mixing the water phase dissolved with the composite wall material and the auxiliary material with the walnut oil core material, and shearing to obtain a treatment solution; wherein the composite wall material is a mixture of cassava modified starch and maltodextrin; the mass ratio of the cassava modified starch to the maltodextrin in the mixture is (1.5-2.5) to 1; the mass percentage concentration of the composite wall material in the water phase is 30-45%; the auxiliary materials comprise walnut essence, sucralose and walnut peptide; the mass percentage concentration of the walnut essence in the water phase is 0.07-0.15%; the mass percentage concentration of the sucralose in the water phase is 0.01-0.02%; the mass percentage concentration of the walnut peptide in the water phase is 2-5%; the walnut oil core material is refined walnut oil; the mass ratio of the water phase to the refined walnut oil is (2-5) to 1; the shearing speed of the shearing treatment is 1500-; the time of the shearing treatment is 20-40 min; the temperature of the shearing treatment is 30-45 ℃;
(2) sequentially homogenizing and drying the treatment liquid obtained in the step (1) to obtain the walnut oil microcapsule powder; wherein the homogenizing temperature is 40-60 ℃; the pressure for homogenizing is 30-50 MPa; the homogenization is carried out at least 3 times; the drying mode is spray drying; the air inlet temperature of the spray drying is 150-170 ℃; the air outlet temperature of the spray drying is 70-90 ℃; the frequency of the high-pressure pump in the spray drying is 10-30 Hz; the atomization rotating speed in the spray drying is 25-35 r/min.
10. A walnut oil microcapsule powder, characterized in that it is obtained by the preparation method according to any one of claims 1 to 9.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101023763A (en) * 2006-02-21 2007-08-29 北京市农林科学院 Method for making high-embedding-ratio powder walnut oil
CN101269310A (en) * 2008-05-06 2008-09-24 大连赛诺微囊技术有限公司 Method for preparing cold water dispersion type microcapsule powder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101023763A (en) * 2006-02-21 2007-08-29 北京市农林科学院 Method for making high-embedding-ratio powder walnut oil
CN101269310A (en) * 2008-05-06 2008-09-24 大连赛诺微囊技术有限公司 Method for preparing cold water dispersion type microcapsule powder

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