JP2019176790A - Film material for coated powder formation, and coated powder - Google Patents

Abstract

To provide a film material for coated powder formation, that can achieve both barrier to the outside and water dispersibility.SOLUTION: In order to solve the problem, a particulate film material for coated powder formation, containing an oil/fat (A) having a solid fat content at 35°C of 20 to 100% and a melting point of 40 to 70°C, an emulsifier (B), and a water-soluble excipient, and in which: the content of the oil/fat (A) is 40 to 75 mass%, the content of the emulsifier (B) is 2.5 to 13 mass%, and the content of the water-soluble excipient (C) is 22.5 to 45 mass%; and the differential scanning calorimetry endothermic peak temperature is 40 to 70°C and the average particle size is 10 to 150 μm, is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a film material used for coating a powder surface, and a coating powder obtained using the film material.

  The oil / fat coating technique is a technique in which a solid oil / fat composition is physically collided and spread on a powder surface. By covering the core powder with the solid oil composition and blocking it from the outside, contact between the powders can be avoided or chemical reaction of each powder substance can be suppressed. For example, Patent Document 1 discloses a method for producing a lipid coating in which a lipid powder and a core material are mixed and the core material is coated with lipid, and the core material is sufficiently coated in the lipid coating. It is disclosed that it is stable for a long time without aggregation during storage.

  Recently, new functions have been required for coating powders. In applications such as powdered beverages and bath additives, they may be used by being dispersed or dissolved in water, and in that case, dispersibility in water is required. For example, Patent Document 2 discloses a method for improving affinity for water by using powdered fats and oils whose particle surfaces are previously coated with a hydrophilic material as a film material and coating a core material made of a hygroscopic powder. Has been.

JP 2007-261985 A JP 2001-017093 A

  Since the disclosed technology has good water dispersibility, after the core material made of the hygroscopic powder is dissolved, “oil floating” by the film material can be prevented. However, the shielding from the outside, which is an advantage of the oil and fat coating technology, has not been sufficiently studied. Therefore, in the field of oil and fat coating technology, a coating powder forming film material that can achieve both a barrier property to the outside world and a water dispersibility has been demanded.

  Then, the subject of this invention is providing the membrane | film | coat material for coating powder formation which can make the interruption | blocking property with an external field, and water dispersibility compatible.

As a result of intensive studies in view of the above problems, the present inventors have used the above-mentioned problems by using oils having a specific melting point and a specific solid fat content in combination with an emulsifier and a water-soluble excipient. Obtaining knowledge that it can be solved, the present invention has been completed.
That is, the present invention includes the following [1] and [2].

[1] Oil and fat (A) containing a solid fat content at 35 ° C. of 20 to 100% and a melting point of 40 to 70 ° C., an emulsifier (B), and a water-soluble excipient (C) The content of the emulsifier (B) is 2.5 to 13% by mass, and the content of the water-soluble excipient (C) is 22.5 to 45% by mass. A particulate coating powder forming film material having an endothermic peak in scanning calorimetry of 40 to 70 ° C. and an average particle diameter of 10 to 150 μm.
[2] A coating powder having a coating layer made of the coating powder forming film material according to [1] on the surface of the powder.

  ADVANTAGE OF THE INVENTION According to this invention, the membrane | film | coat material for coating powder formation which can make the interruption | blocking property with an external field and water dispersibility compatible is provided.

It is the image which disperse | distributed the coating powder produced using the film | membrane material for coating powder formation in water.

[Film material for coating powder formation]
The film | membrane material for coating powder formation of this invention contains fats and oils (A), an emulsifier (B), and a water-soluble excipient | filler (C). Each component is described in detail below.

<Oil and fat (A)>
The fat (A) used in the present invention has a solid fat content at 35 ° C. of 20 to 100% and a melting point of 40 to 70 ° C.
The fats and oils that can be used as the component A in the present invention have a solid fat content at 35 ° C. of 20 to 100%, and the lower limit is preferably 50% or more, more preferably 70% or more. If the solid fat content at 35 ° C. is too low, it becomes difficult to obtain a good coating by a coating process by mixing, and good processability cannot be obtained.
The solid fat content of fats and oils can be measured using the PRAXIS MODEL SFC-900A in accordance with the standard fat and oil analysis test method (2.2.9-2003) established by the Japan Oil Chemical Society.

Moreover, melting | fusing point of fats and oils (A) is 40-70 degreeC, As a lower limit, Preferably it is 45 degreeC or more, More preferably, it is 50 degreeC or more. As an upper limit, Preferably it is 65 degrees C or less, More preferably, it is 60 degrees C or less. If the melting point is too low, the processability decreases when it is used as a coating powder forming film material, and if it is too high, the production of the coating powder forming film material becomes difficult.
The melting point of the fat (A) can be measured according to the standard fat analysis method “2.2.4.2 Melting point (increased melting point)”.

  Although it will not specifically limit if it is the film | membrane material for coating powder formation of this invention and the fats and oils which have said property, For example, edible fats and oils, a mineral oil, etc. containing vegetable oil and animal oil can be used. Furthermore, what fractionated said edible oil and fat, the hydrogenated hardened | cured material, etc. can be used. The above-mentioned components can be selected as appropriate alone or in combination of two or more.

  As edible oils and fats, specifically palm oil, rapeseed oil, soybean oil, cottonseed oil, corn oil, coconut oil, palm kernel oil, rice oil, sesame oil, olive oil, cocoa butter, safflower oil, sunflower oil, evening primrose oil, borage Natural vegetable oils such as oil, jojoba oil, perilla oil, sesame oil, peanut oil, rice oil; beef tallow, pork fat, fish oil, milk fat, chicken oil, whale oil, tuna oil, sardine oil, mackerel oil, saury oil, bonito Natural animal fats such as oil, herring oil, liver oil, butter; or these alone or a combination of hardened oil, extremely hardened oil, fractionated oil, transesterified oil, and synthetic triglycerides such as medium chain fatty acid triglycerides The blended fats and oils are mentioned. For example, fats and oils with a low solid fat content and a low melting point can be used by mixing with the above fat components and preparing a solid fat content of 20 to 100% and a melting point of 40 to 70 ° C.

  Content of the fats and oils (A) in the film | membrane material for coating powder formation of this invention is 40-75 mass%, and is 45 mass% or more as a lower limit, More preferably, it is 50 mass% or more. As an upper limit, Preferably it is 70 mass% or less, More preferably, it is 60 mass% or less. When the content of the oil (A) is too low, the coating performance is lowered, and when it is too high, the workability is lowered.

<Emulsifier (B)>
The emulsifier (B) used in the present invention is not particularly limited as long as it can emulsify the fat (A). For example, glycerol fatty acid such as sodium octenyl succinate, sodium glycerin fatty acid, sodium caseinate, monoglyceride, organic acid monoglyceride, etc. Ester, polyglycerin fatty acid ester, polyglycerin condensed ricinoleic acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, lecithin, saponin, and the like, preferably starch sodium octenyl succinate, sodium glycerin fatty acid, sodium caseinate And glycerin fatty acid ester.
These emulsifiers may be used alone or in combination of two or more.

  Content of the emulsifier (B) in the film | membrane material for coating powder formation of this invention is 2.5-13 mass%, and is 4 mass% or more as a lower limit, More preferably, it is 5 mass% or more. . As an upper limit, Preferably it is 10 mass% or less, More preferably, it is 8 mass% or less. If the content of the emulsifier (B) is too low, dispersibility in water cannot be obtained, and if it is too high, it tends to coagulate after forming a coating powder forming film material.

<Water-soluble excipient (C)>
The water-soluble excipient (C) used in the present invention is used for improving the moldability of the coating powder-forming film material and the dispersibility in water. The water-soluble excipient (C) is not particularly limited, and examples thereof include sugars such as lactose, processed starch, skim milk powder, trehalose, maltose, and dextrin, and polyalkylene glycols such as polyethylene glycol and polypropylene glycol. Preferably, dextrin, lactose and nonfat dry milk are mentioned. Since the water-soluble excipient (C) used in the present invention is water-soluble, a good-quality coating with good dispersibility in water can be obtained.
Content of the water-soluble excipient | filler (C) in the film | membrane material for coating powder formation of this invention is 22.5-45 mass%, As a lower limit, Preferably it is 30 mass% or more, More preferably, 35 It is at least mass%. As an upper limit, Preferably, it is 44 mass% or less, More preferably, it is 40 mass% or less. If the content of the water-soluble excipient (C) is too low, the processability is lowered, and if it is too high, the coating performance is lowered.

<Other ingredients>
In addition to the components (A) to (C), the coating powder forming film material of the present invention can contain other components.
Other components may be any components that do not inhibit properties such as water dispersibility in the coating powder forming film material, and examples thereof include proteins, carbohydrates, antioxidants, stabilizers, inorganic salts, and the like.

The film material for forming a coated powder of the present invention has an endothermic peak temperature in differential scanning calorimetry of 40 to 70 ° C., and the lower limit is preferably 45 ° C. or higher, more preferably 50 ° C. or higher. As an upper limit, Preferably it is 60 degrees C or less, More preferably, it is 55 degrees C or less. When the endothermic peak temperature of differential scanning calorimetry is less than 40 ° C., the workability is lowered.
The endothermic peak temperature of differential scanning calorimetry in the coating powder forming film material of the present invention is a temperature at which the crystallization component of the coating powder forming film material melts. The endothermic peak temperature can be measured using a differential scanning calorimeter, Thermo plus DSC 8230, and is the temperature at the peak of the absorption peak.

The film | membrane material for coating powder formation of this invention is a particulate form. The average particle diameter of the particles is 10 to 150 μm, and the lower limit is preferably 50 μm or more, and more preferably 60 μm or more. As a lower limit, it is 100 micrometers or less, More preferably, it is 80 micrometers or less.
By setting the average particle diameter of the coating powder forming film material within the above range, the core material can be uniformly coated, and the shielding property from the outside can be improved.
The average particle diameter can be measured using a laser diffraction particle size distribution measuring apparatus.

<Method for Preparing Film Material for Coating Powder Formation>
The film material for forming a coating powder of the present invention can be prepared in the form of particles in the above particle size range by a conventional method. Generally, it can manufacture through an emulsification process and a drying process.
<Emulsification process>
An emulsification process is a process of emulsifying the aqueous solution which mixed fats and oils (A), the emulsifier (B), and the water-soluble excipient | filler (C). For example, in the warm water prepared in the tank, the emulsifier (B) and the water-soluble excipient (C) are added with stirring and dissolved, and then the fat (A) is added and coarsely emulsified while stirring, The crude emulsion is emulsified with a homogenizer.
For emulsification in a homogenizer, use of a line mixer or a Manton Gorin type homogenizer is preferred. In the case of a Manton gorin type homogenizer, the treatment conditions are preferably 10 MPa or more, more preferably 20 MPa, and most preferably 30 MPa or more. It is preferable that the oil droplets are refined to 1.0 μm or less by this emulsification in order to suppress oxidation in the subsequent process and storage.

<Drying process>
A drying process is a process of evaporating a water | moisture content with the dryer for the emulsion emulsified by the emulsification process. For example, the emulsified liquid emulsified in the emulsification step is dried by evaporating moisture with a dryer such as a spray dryer. Examples of the dryer include a freeze dryer, a drum dryer, a spray dryer, and a vacuum belt dryer. The spray dryer preferably has a hot air temperature of 100 to 120 ° C and an exhaust air temperature of 70 to 90 ° C in order to suppress oxidation of highly unsaturated fatty acids. Further, after drying, pulverization, sieving, and filling are performed as appropriate, but in the case of pulverization, fine silicon dioxide may be added in order to improve mixing and powder flowability. Thereafter, pulverization, sieving, and filling are performed as appropriate.

[Coating powder]
The coating powder of this invention has the coating layer which consists of said film | membrane material for coating powder formation on the surface of powder.
The coated powder of the present invention can be formed by a conventional method using the film material for forming a coated powder of the present invention. Specifically, the coating powder forming film material and the powdery core material can be mixed.
The temperature at the time of mixing is 20-45 degreeC. If it is less than 20 degreeC, the film | membrane material for coating powder formation cannot adhere efficiently to a core material, and a favorable coating cannot be obtained. Exceeding 45 ° C. is not preferable because oil oozes out easily from the coating powder forming film material and a good coating cannot be obtained.

  During mixing, the coating powder forming membrane material and the core material powder come into contact with and collide with each other. Specifically, the powder is mixed by a known mixer, high-efficiency powder mixing device, or high-speed airflow convection. Use a contact device. In these apparatuses, the powder is brought into contact with and collided with each other, and the inner wall of the apparatus and the auxiliary tool are brought into contact with and collided to adhere and coat the coating powder forming film material onto the core material.

  The core material is not particularly limited, but inorganic salts such as sodium chloride, sodium bicarbonate and magnesium chloride; organic acids such as citric acid, tartaric acid and fumaric acid; monosaccharides such as glucose, fructose and galactose; maltose, lactose and sucrose , Disaccharides such as trehalose, other sugar powders such as erythritol, sorbitol, mannitol, maltitol, lactitol, palatinit, xylitol; Natural extract powder such as malt extract; vegetable powder such as tomato, eggplant, carrot; spice powder such as wasabi, mustard, ginger, chili; enzyme powder such as amylase, protease, lipase; yeast, bifidobacteria, lactic acid bacteria, etc. Useful live bacteria powder: Vitamin B group, vitamin C, water-soluble vitamins such as folic acid, nicotinamide, and vitamin powders such as fat-soluble vitamins such as vitamins A, D, E, and K; spirulina, chlorella, ginseng, ganoderma , Agarisk, maitake, ginkgo biloba, turmeric, blueberry, herbs, psyllium, aloe, tea, pollen, garcinia, gymnema and other plants, algae, mycelium powder; chitin, chitosan, collagen powder; other royal jelly , Propolis, nucleic acid, lecithin, saponin, sterols, carnitine, ceramide, catechin, shark cartilage, heme iron, and the like, powder fragrance, peptide powder, consomme powder, pigment powder, heme iron powder and the like. These may be used alone or in combination of two or more. The average particle diameter of these core materials is not particularly limited, but the average particle diameter of these core materials is not particularly limited, but is usually in the range of 10 μm to 3 mm, preferably 100 μm to 1 mm.

[Applications of coating powder forming film materials]
The film material for forming a coated powder of the present invention includes, for example, bread and confectionery such as bread, biscuits and jelly; processed milk food such as yogurt and ham; seasonings such as miso, sauce and dressing; processed food such as tofu and noodles; Examples include foods and beverages such as health foods in the form of capsules, tablets, granules, bathing agents, cosmetics, and the like.

  The present invention will be specifically described below with reference to examples. The compounding quantity in an Example is a mass reference | standard.

<Adjustment of coating powder forming film material>
A film material for forming a coated powder was produced by the following method with the composition shown in Table 1.
<Adjustment of aqueous phase>
The emulsifier (B) and the water-soluble excipient (C) were dissolved in warm water (80 ° C.).
<Manufacture of membrane material for coating powder formation>
While stirring the aqueous phase, the oil (A) was added to prepare a crude emulsion. This crude emulsion is emulsified with a Manton Gorin type homogenizer (30 MPa), dried using a spray dryer (hot air temperature 150 ° C., exhaust air temperature 85 ° C.), and the resulting dried product is pulverized to form a coating powder A membrane material was obtained.

<Formation of coating powder>
Using 10 parts by weight of the coating powder forming membrane material and 90 parts by weight of baking soda produced by the formulation shown in Table 1, the coating powder was produced by treating with a vertical granulator (manufactured by POWREC Co., Ltd.) for 20 minutes.

Next, the evaluation method in each example is shown.
(1) Solid fat content (SFC)
The solid fat content of the fat (A) used for the production of the coating powder forming membrane material was measured. Measurement was performed using an NMR apparatus (PRAXIS MODEL SFC-900A).
(2) Endothermic peak of differential scanning calorimetry The temperature of the endothermic peak of differential scanning calorimetry was measured by raising the temperature of the coating powder forming film material obtained in the above production example under the conditions of 10 ° C / min. Measurement was performed using a differential scanning calorimeter (Thermo plus DSC8230).

(3) Average particle diameter The particle size of the film material for coating powder formation obtained above was measured using a laser diffraction particle size distribution analyzer (SALD-2100) manufactured by Shimadzu Corporation, and the median diameter was calculated.

(4) Processing suitability Using a high-speed stirring mixer (vertical granulator (manufactured by POWREC Co., Ltd.)), mixing with sodium bicarbonate was performed. After the treatment, it was visually confirmed whether or not oil and fat ooze out in the tank of the machine and evaluated as follows. ○ The above was determined as the acceptable range for practical use.
◎: No oil or fat oozes ○: The whole powder is moist and lumps are observed, but no oil droplets are observed in the tank ×: Fat and oil ooze out severely, and oil droplets are recognized in the tank

(5) Covering / barrier property After filling the aluminum stick so that the baking soda obtained by forming the above coating powder and citric acid have a mass ratio of 1: 1, it is sealed with a heat seal, and the temperature is 40 ° C. A storage test was conducted for 90 days in a humidity of 75% by mass. The volume change between before and after storage was measured by water immersion method, and the covering and blocking properties were evaluated. When the covering and blocking properties are poor, sodium bicarbonate and citric acid react in the aluminum stick to generate carbon dioxide, and the volume change of the aluminum stick increases.
(6) Dispersibility in water When the coating powder obtained above is added to water, the floating condition on the water surface and the dispersion condition in water are confirmed visually as shown in FIG. 1 and evaluated as follows. did. ○ was determined to be an acceptable range for practical use.
○: Completely dispersed in water ×: Not dispersed in water at all

  From the results shown in Table 1, the coating powders of Examples 1 to 4 using the coating powder forming membrane material of the present invention are excellent in terms of workability, coating / blocking properties, and water dispersibility. Recognize. It was found that Examples 1 and 3 to 4 using the fats and oils (A) having a large solid fat content (SFC) of the fats and oils (A) exhibited more excellent effects in covering and blocking properties.

  In Comparative Examples 1 and 2, the solid fat content of the fat (A) is less than 20%, the content of the water-soluble excipient (C) is less than 22.5% by mass, and the endothermic peak of the film material is Since it was less than 40 degreeC, it turned out that it is inferior to workability, covering, and interruption | blocking property. In Comparative Example 3, the solid fat content of the fat (A) was less than 20%, and the endothermic peak of the film material was less than 40 ° C., so it was found that the coating / blocking properties were inferior. Comparative Example 4 uses a film material for forming a coating powder that does not contain a water-soluble excipient (B) and an emulsifier (C), and it was found that the dispersibility of the coating powder in water is poor.

Claims (2)

  Oil and fat (A), emulsifier (B), and water-soluble excipient (C) having a solid fat content at 35 ° C. of 20 to 100% and a melting point of 40 to 70 ° C. Is 40 to 75% by mass, the content of the emulsifier (B) is 2.5 to 13% by mass, and the content of the water-soluble excipient (C) is 22.5 to 45% by mass. Differential scanning calorimetry An endothermic peak temperature of 40 to 70 ° C. and an average particle diameter of 10 to 150 μm are used as a particulate coating powder forming film material. A coated powder having a coating layer comprising the film material for forming a coated powder according to claim 1 on the surface of the powder.