JP2023137434A - powder composition - Google Patents

Abstract

To provide a powder composition carrying a large amount of oil components, excellent in flowability, and improved in dispersibility of the oil components to a product, etc.SOLUTION: A powder composition includes an oil component carried by powdering base material, in which the oil component has solubility of 1 g/100 mL or less with respect to water and is a substance which is liquid at a room temperature, and the powdering base material includes sorbitol having specific surface of 5.0 m2/g or more measured by the BET one point method and a pore volume of 0.45 mL/g or larger measured by the mercury press-in method, and an impregnation rate of the oil component to the powdering base material is 1-50 wt.%.SELECTED DRAWING: None

Description

The present invention relates to a powder composition comprising an oily component supported on a powdered base material.

Oil-based ingredients such as fats and oils, fat-soluble vitamins, and fat-soluble drugs are used in a variety of products, such as food and beverages, cosmetics, fragrances, pharmaceuticals, quasi-drugs, and daily necessities, depending on the purpose.

Many of these oily components are in a liquid or semi-solid state at room temperature and are inconvenient to handle, so the use of powdered oily components is increasing. Methods for powdering oily components include powdering by supporting the oily component on a powdered base material, and powdering by suspending the oily component in a solution of the powdered base material and then drying it. Are known. However, in the powdering method in which the powder is supported on a powder base material, the fluidity and dispersibility are poor, and the amount of oily components retained is small, so that the convenience of using the powder as a powder is insufficient. Furthermore, in powdering methods that involve a drying step, a polymeric powdering base material is used, and the resulting powder has low dispersibility in water, resulting in the problem that oily components tend to separate. Furthermore, depending on the type of oily component, heating during the drying process may cause the oily component to volatilize or deteriorate due to oxidation reactions, so improvements have been sought.

Patent Document 1 describes a product obtained by adding soluble starch and polyol to an aqueous solution of starch decomposition products, and supporting α-pinene and salad oil, which are oily components, using a powdered base material dried with a drum dryer. Powder compositions are described. However, the powder supporting the oily component had poor fluidity and the amount supported was not sufficient.

Patent Document 2 proposes a powder composition obtained by suspending an oily component in an aqueous solution of highly branched cyclic dextrin and drying the suspension in a drum dryer or freeze dryer. However, due to the low water solubility of the powdered base material, the dispersibility in final products etc. was insufficient. Additionally, special equipment was required for production.

Patent Document 3 proposes a powder composition in which an oil-soluble component, an emulsifier, maltotriose, and water are emulsified using an emulsifying device and then dried using a spray drying device. However, although the solubility and dispersibility in water have been improved, since a heating operation is performed in the drying process, the problems of volatilization of oily components and deterioration due to oxidation have not been solved. Further, there were also problems such as the work process being complicated.

Therefore, there has been a desire for a powder composition in which oily components are powdered, in which deterioration due to volatilization and oxidation of the oily components is suppressed, the powder has excellent fluidity, and excellent dispersibility in water.

Japanese Patent Application Publication No. 8-143603 Japanese Patent Application Publication No. 2007-238824 Japanese Patent Application Publication No. 2006-000087

An object of the present invention is to provide a powder composition that has a large amount of oily components supported, has excellent fluidity, and has improved dispersibility of the oily components into products and the like.

As a result of extensive studies, the present inventors have determined that a specific oil component has a specific surface area of 5.0 m ² /g or more by the BET (Brunauer-Emmett-Teller) single-point method, and a pore volume of 0 by the mercury porosimetry method. The present invention was completed based on the discovery that the above-mentioned problems can be solved by supporting the powder on a powdered base material containing sorbitol of 45 mL/g or more.

That is, the present invention provides a powder composition containing an oily component supported on a powdered base material, wherein the oily component has a solubility in water of 1 g/100mL or less and is a liquid substance at room temperature, and the powdered base material The material contains sorbitol with a specific surface area of 5.0 m ² /g or more by the BET single point method and a pore volume of 0.45 mL / g or more by the mercury porosimetry method, and the impregnation rate of the oily component into the powdered base material is A powder composition is provided that is between 1 and 50% by weight.

The present invention will be explained in detail below.
The oily component that can be employed in the powder composition of the present invention has a solubility in water of 1 g/100 mL or less. The solubility of the oily component in water is preferably 0.8 g/100 mL or less, more preferably 0.5 g/100 mL or less.

In addition to the above-mentioned solubility conditions, the oily component that can be employed in the powder composition of the present invention must be liquid at room temperature. Substances that are solid at room temperature cannot be used because it is difficult to support them on the powdered base material. Note that in the present invention, normal temperature is about 25°C.

The oily component may consist of a single chemical substance or may be a mixture. Examples of oily components include edible fats and oils, fragrances, emulsifiers, and the like. A plurality of oily components may be used together.

Edible fats and oils include edible vegetable oils that are liquid at room temperature, such as rapeseed oil, salad oil, soybean oil, cottonseed oil, safflower oil, sunflower oil, corn oil, and rice oil, and edible animal oils such as fish oil, liver oil, whale oil, and marine animal oil. can be mentioned. Among these edible fats and oils, rapeseed oil, salad oil, soybean oil, and fish oil are exemplified as preferred edible fats and oils, and rapeseed oil is exemplified as a particularly preferred edible fat and oil.

Flavoring agents include citrus essential oils such as orange, tangerine, lemon, grapefruit, and lime, flower essential oils, plant essential oils such as mint oil, cypress oil, and spice oil, nut extracts, coffee extracts, vanilla extracts, cocoa extracts, Examples include oily extracts such as black tea extract, synthetic fragrance compounds, oily blended fragrance compositions, and oily fragrances of arbitrary mixtures thereof. Among these fragrances, citrus essential oils are preferred, and orange fragrances are particularly preferred. .

The emulsifier preferably has an HLB value of 8 or less, more preferably an HLB value of 0.1 to 7.9, and even more preferably an HLB value of 0.5 to 7.5. In the present invention, the HLB value means a value measured by the Griffin method.

Specific examples of the emulsifier include emulsifiers that are liquid at room temperature, such as glycerin fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, lecithin, and saponin. More specifically, sorbitan laurate, propylene glycol monooleate, and hexaglycerin condensed ricinoleate are exemplified as preferred emulsifiers, and hexaglycerin condensed ricinoleate is exemplified as a particularly preferred emulsifier.

In addition to the above-mentioned edible fats, fragrances, and emulsifiers, oil-based ingredients include agricultural chemicals such as metolachlor, pharmaceutical ingredients such as ibuprofen piconol or teprenone, fat-soluble vitamins or their derivatives such as retinol palmitate, tocopherol, and phylloquinone, and ubiquinone. Coenzymes such as Q10 can be used.

The powdered base material of the present invention has a specific surface area of 5.0 m ² /g or more by the BET single point method and a pore volume of 0.45 mL/g or more by the mercury intrusion method. ). In some embodiments, the powdered substrate consists of porous sorbitol.

Porous sorbitol can be produced, for example, by kneading molten sorbitol and ethanol and then drying the mixture under reduced pressure. In one preferred embodiment, the method for producing porous sorbitol of the present invention includes the following steps:
a) a step of supplying molten sorbitol and ethanol into a kneading device;
b) a step of kneading molten sorbitol and ethanol in a kneading device while maintaining it at 50 to 78 °C, and c) drying the kneaded product obtained in b) under reduced pressure at 25 to 90 °C and 100 to 30,000 Pa. It includes a step of removing ethanol.

Furthermore, the above manufacturing method will be explained more specifically. First, in step a), 10 to 70 parts by weight of molten sorbitol and 30 to 90 parts by weight of ethanol are fed into a kneading device. The amount fed into the kneading device is preferably 15 to 68 parts by weight of molten sorbitol and 32 to 85 parts by weight of ethanol, more preferably 20 to 65 parts by weight of molten sorbitol and 35 to 80 parts by weight of ethanol. be.

The water content contained in the ethanol used in step a) is, for example, 10% by weight or less. The amount of water contained in ethanol is preferably 8% by weight or less, more preferably 5% by weight or less, even more preferably 2% by weight or less, particularly preferably 0% by weight (ethanol only). The smaller the amount of water contained in ethanol, the more the specific surface area of the produced porous sorbitol tends to improve.

Next, in step b), the molten sorbitol and ethanol in the kneading device are kneaded while being maintained at 50 to 78°C. By maintaining the temperature in the kneading device at 50 to 78° C., molten sorbitol and ethanol can be kneaded without rapidly solidifying the molten sorbitol in the kneading device and while suppressing volatilization of ethanol. The temperature inside the kneading device is preferably 55 to 78°C, more preferably 60 to 75°C.

In step c), the kneaded product obtained in step b) is dried under reduced pressure at 25 to 90° C. and 100 to 30,000 Pa to remove ethanol and obtain porous sorbitol. Drying under reduced pressure is performed using, for example, a reduced pressure dryer such as an evaporator. The porous sorbitol obtained in step c) can be pulverized or sized using a blender or the like to form a powder.

As the kneading device used for producing the above-mentioned porous sorbitol, a kneading machine such as a vertical kneader, a horizontal batch kneader, a KRC kneader, etc. is employed.

The horizontal batch kneader can crystallize the melt-kneaded product in a short time when molten sorbitol and ethanol are kneaded in step b) of producing porous sorbitol, and the porous sorbitol obtained through step c) can be crystallized in a short time. Since it exhibits a high specific surface area and pore volume, it is preferable from the viewpoint of production efficiency and quality.

The KRC kneader is preferable in terms of productivity and economy because it can crystallize the melt-kneaded product in a very short time when molten sorbitol and ethanol are kneaded in step b) for producing porous sorbitol.

The specific surface area of the powdered base material that can be used in the present invention is 5.0 m ² /g or more, preferably 6.0 to 50.0 m ² /g, more preferably 7.0 to 30.0 m ² /g.

The specific surface area as used in the present invention means a value measured by the BET single point method using, for example, MONOSORB (manufactured by Yuasa Ionics Co., Ltd.) or an equivalent specific surface area measuring device. For example, the specific surface area can be measured under the following measurement conditions.
[Measurement condition]
Method: BET single point method Carrier gas: Nitrogen/helium mixed gas (N ₂ :He=30:70)
Measurement gas flow rate: 15cc/min Degassing conditions: 120°C, 20 minutes

The pore volume of the powdered base material that can be used in the present invention is 0.45 mL/g or more, preferably 0.50 to 3.00 mL/g, more preferably 0.55 to 2.50 mL/g. be.

The pore volume in the present invention means a value measured by mercury porosimetry using, for example, Pascal 240 (manufactured by Thermo Fisher Scientific) or an equivalent pore volume measuring device.

By mixing the powdered base material and the oily component, the oily component can be supported on the powdered base material. For example, the oily component is supported on the powdered base material by adding and mixing the oily component little by little to the powdered base material at a weight ratio that achieves a desired impregnation rate.

In the powder composition of the present invention, the impregnation rate of the oily component into the powdered base material is 1 to 50% by weight, preferably 5 to 48% by weight, and preferably 10 to 45% by weight. Some are more preferred, and those with an impregnation rate of 15 to 40% by weight are even more preferred. When the impregnation rate is less than 1% by weight, the amount of sorbitol, which is a powder base material, in the powder composition increases relatively, so the taste and physical properties of the added substance tend to change, and when the impregnation rate exceeds 50% by weight, In this case, the oily component is exposed on the surface of the powder composition, and the fluidity tends to deteriorate. The impregnation rate in the present invention means the ratio of the weight of the oily component to the total weight of the oily component and the powdered base material.

The angle of repose of the powder composition of the present invention is preferably 30 to 60°, more preferably 35 to 58°, even more preferably 40 to 55°. When the angle of repose is less than 30°, scattering tends to become high, and when the angle of repose exceeds 60°, fluidity tends to deteriorate.

The angle of repose in the present invention means a value measured by the cylindrical rotation method, for example, with a cylindrical rotation method angle of repose measuring instrument (Tsutsui Rikagaku Kikai Co., Ltd.) or an equivalent measuring instrument.

The mode diameter of oil droplets of the oily component when the powder composition of the present invention is dispersed in water is preferably 0.1 to 5 μm, more preferably 0.2 to 4.8 μm, and 0.1 to 5 μm, more preferably 0.2 to 4.8 μm. More preferably, the thickness is 3 to 4.5 μm. When the mode diameter is less than 0.1 μm, the stability of the oil droplets decreases and the oil droplets tend to aggregate early, and when the mode diameter exceeds 5 μm, the dispersion tends to be insufficient.

The mode diameter as used in the present invention is a value measured by a dynamic light scattering method using, for example, a dynamic light scattering particle size distribution measuring device (LB-500, manufactured by Horiba, Ltd.) or an equivalent device. Moreover, the mode diameter in the present invention, unless otherwise specified, refers to the particle diameter corresponding to the mode of the particle size distribution measured by a dynamic light scattering method.

The powder composition of the present invention preferably has a dispersion turbidity in water of 0.1 to 1, more preferably 0.2 to 0.8, and more preferably 0.25 to 0.7. More preferred. When the dispersion turbidity in water is less than 0.1, the oily component tends not to be uniformly dispersed in water, and when it exceeds 1, the powder composition tends to aggregate.

In the present invention, the dispersion turbidity is measured using a spectrophotometer using a dispersion prepared by adding the powder composition of the present invention so that the oil component is 0.025% by weight based on water and stirring for 5 minutes. It means the absorbance at a wavelength of 660 nm at a cell length of 1 cm measured by

The powder composition of the present invention can be used in various fields such as food and drink, cosmetics, fragrances, pharmaceuticals, quasi-drugs, and daily necessities, depending on the purpose of the oily component.

One preferred embodiment using the powder composition of the present invention is a whitening agent that improves the white tone of foods and drinks by adding the powder composition containing edible oil and fat to foods and drinks.

Another preferred embodiment using the powder composition of the present invention is an emulsion stabilizer that improves the emulsion stability of foods, drinks, cosmetics, daily necessities, etc. by adding a powder composition containing an emulsifier to a liquid.

Another preferred embodiment of using the powder composition of the present invention is exemplified by using the powder composition containing a fragrance as a powder fragrance preparation.

EXAMPLES Hereinafter, the present invention will be explained in detail with reference to Examples, but the present invention is not limited to these Examples in any way.

Test example 1 (preparation of powdered base material)
The materials shown below were melt-kneaded in the proportions (wt%) and under the conditions shown in Table 1, and the crystallized kneaded product was dried under reduced pressure with a rotary evaporator under the conditions shown in Table 1 to form powdered base materials 1 and 6 to 9. I got it. The obtained powdered base material was pulverized using a blender shown below at 15,700 rpm for 30 seconds. The specific surface area and pore volume of the powdered substrates 1 and 6 to 9 after pulverization were measured under the following conditions. For powdered base materials 2 to 5, the kneaded materials did not crystallize during melt-kneading, and the evaluation was completed without measuring the specific surface area and pore volume.

<Materials>
・Sorbitol 1: Powdered sorbitol “Ueno” 20M (manufactured by Ueno Food Techno Co., Ltd., sorbitol purity 92%)
・Sorbitol 2: Partec (registered trademark) SI 150 (manufactured by Merck & Co., sorbitol purity 98.4%)
・Maltitol: Powdered maltitol “Ueno” 60M (manufactured by Ueno Food Techno Co., Ltd.)
・Xylitol: Primary xylitol (reagent, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.)
・Maltose: Sunmalt (registered trademark) Midori (manufactured by Hayashibara Co., Ltd.)
・Dextrin: Max 1000EX-C (Matsuya Chemical Industry Co., Ltd.)
・Ethanol: Fermented ethanol (95 degrees, manufactured by Daiichi Alcohol Co., Ltd., ethanol 92.3% by weight)
・Ion exchange water <kneading device>
・Horizontal: Horizontal kneader (semi-KC-6 type, manufactured by Satake Co., Ltd.)
・KRC: KRC kneader (S2 type, manufactured by Kurimoto Iron Works Co., Ltd.)
<Blender>
・Blender (16Speed Blender, manufactured by Oster)

Measurement of specific surface area The powdered base material was placed in a measurement cell (volume: 1.7 cm ³ ) to a capacity of approximately 1/2, and measured using a BET type specific surface area meter (MONOSORB, manufactured by Yuasa Ionics Co., Ltd.) under the following conditions. It was measured with
[Measurement condition]
Method: BET single point method Carrier gas: Nitrogen/helium mixed gas (N ₂ :He=30:70)
Measurement gas flow rate: 15cc/min Degassing conditions: 120°C, 20 minutes

Measurement of Pore Volume Pore volume was measured using a mercury porosimeter (Pascal 240, manufactured by Thermo Fisher Scientific).

Examples 1 to 6 and Comparative Examples 1 to 24
60 g of the powdered base material produced in the above test example was placed in a resin bag, and 20 g of the following oily component was added little by little while shaking to prepare a powder composition with an impregnation rate of 25% by weight (Examples 1 to 3 and Comparative Examples 1 to 12). Further, powder compositions with an impregnation rate of 40% by weight were prepared in the same manner except that the oily component was changed to 40g (Examples 4 to 6 and Comparative Examples 13 to 24).

<Oily component>
・Edible fat (rapeseed oil): Canola oil (manufactured by Nisshin Oilli Group Co., Ltd.)
・Fragrance: Orange fragrance (manufactured by Ogawa Fragrance Co., Ltd.)
・Emulsifier (hexaglycerin condensed ricinoleate): Poem PR-300 (manufactured by Riken Vitamin Co., Ltd.)

Measurement of Angle of Repose 150 mL of the powder composition was placed in a glass cylindrical container, and the angle of repose was measured using a cylindrical rotation method angle of repose measuring device (Tsutsui Rikagaku Kikai Co., Ltd.). The results are shown in Tables 2 and 3.

Measurement of Mode Diameter of Oil Droplets 0.1 g of the powder composition was added to 100 g of ion-exchanged water with stirring at 1000 rpm, and after the addition, the mixture was stirred for 5 minutes to prepare a dispersion. The mode diameter of the oil droplets in the dispersion was measured using a dynamic light scattering particle size distribution analyzer (LB-500, manufactured by Horiba, Ltd.). The results are shown in Tables 2 and 3.

Measurement of Dispersion Turbidity Ion-exchanged water was added to 0.1 g (0.025 g as oil component) of a powder composition with an impregnation rate of 25% by weight to make 100 g, and the mixture was stirred at 1000 rpm for 5 minutes to prepare a dispersion. The absorbance of the dispersion liquid at a wavelength of 660 nm at a cell length of 1 cm was measured using a spectrophotometer UH5300 (manufactured by Hitachi High-Tech Science Co., Ltd.). In addition, the absorbance was measured in the same manner as above, except that ion-exchanged water was added to 0.1 g (0.040 g as oily component) of the powder composition with an impregnation rate of 40% by weight to make 160 g. The results are shown in Tables 2 and 3.

The powder compositions of Examples 1 to 6 of the present invention had lower angles of repose than the powder compositions of Comparative Examples 1 to 24, which confirmed that they had excellent fluidity. In addition, because the mode diameter of the oil droplets is small and the dispersion turbidity is high, when the powder composition is dispersed in water, the base material dissolves quickly and the oil droplets with small particle diameters are uniformly dispersed. It was confirmed that there is.

Claims (9)

A powder composition comprising an oily component supported on a powdered base material,
The oily component has a solubility in water of 1 g/100 mL or less and is a liquid substance at room temperature,
The powdered base material contains sorbitol having a specific surface area of 5.0 m ² /g or more by the BET single point method and a pore volume of 0.45 mL / g or more by the mercury intrusion method,
A powder composition in which the impregnation rate of an oily component into a powdered base material is 1 to 50% by weight. The powder composition according to claim 1, having an angle of repose of 30 to 60°. The powder composition according to claim 1 or 2, wherein the oily component is one or more selected from the group consisting of edible fats and oils, fragrances, and emulsifiers. The powder composition according to claim 3, wherein the oily component is rapeseed oil. The powder composition according to claim 3, wherein the oily component is an orange flavor. The powder composition according to claim 3, wherein the oil component is an emulsifier with an HLB value of 8 or less. The powder composition according to claim 6, wherein the emulsifier is a polyglycerol fatty acid ester. The powder composition according to any one of claims 1 to 7, wherein the mode diameter of oil droplets of the oily component when the powder composition is dispersed in water is 0.1 to 5 μm. The powder according to any one of claims 1 to 8, wherein the powder composition has a dispersion turbidity of 0.1 to 1 when the powder composition is dispersed in water so that the oil component is 0.025% by weight. Composition.