JP6664228B2 - Emulsified compositions, acidic foods and acidic beverages - Google Patents

Description

  The present invention relates to an emulsified composition containing a polyhydric alcohol, a fat and an emulsifier, and an acidic food and an acidic beverage containing the emulsified composition.

  In the field of foods and drinks, the production of beverages and foods with a rich taste and improved mouthfeel by adding oils and fats has been performed. For example, in a coffee beverage, a product having an enhanced flavor richness and mellowness has been produced by adding a cream, which is an oil or fat derived from milk.

  Emulsifiers are used to emulsify fats and oils in foods and drinks. For example, as water-soluble emulsifiers, polyoxyethylene sorbitan ester, polyglycerin ester, sugar ester and the like are known.

  It is known that when an emulsifier is used in an amount exceeding a certain amount, specific bitterness and astringency are felt, but among the above-mentioned water-soluble emulsifiers, sugar esters have a relatively good flavor. It has been widely used for various foods and drinks.

  However, since sugar esters cause aggregation under acidic conditions, emulsions using sugar esters have the disadvantage that they are easily destabilized under acidic conditions. For example, when the emulsification of coffee as an acidic beverage is insufficient, a creaming phenomenon and a separation phenomenon of added fats and oils occur, thereby losing commercial value.

  Sugar esters having a high monoester content among sugar esters are known to be excellent in acid resistance. Utilizing this property, Patent Literature 1 describes a fat-containing water-soluble composition comprising a sugar ester containing 90% or more of a monoester and a specific emulsifier, and a fat and water.

Japanese Patent No. 3562010

  However, in the method described in Patent Document 1, the sugar ester that can be used is limited to those having a high monoester content, and the range of emulsifier selection is limited.

  Therefore, an object of the present invention is to provide an emulsified composition which is stable under emulsification under acidic conditions while using a sugar ester regardless of the monoester content, and an acidic food and an acidic beverage containing the emulsified composition. It is.

The present invention provides the following emulsified compositions [1] to [7], an acidic food and an acidic beverage in order to achieve the above object.
[1] It contains 20 to 80% by mass of a polyhydric alcohol, 10 to 70% by mass of an oil-soluble substance (excluding an emulsifier), and a sugar ester and an organic acid monoglyceride as an emulsifier. An emulsified composition wherein the sugar ester content (SE) ratio (OMG / SE) is 0.01 or more and less than 0.6.
[2] The emulsified composition according to [1], wherein the total content of the polyhydric alcohol and the oil-soluble substance (excluding an emulsifier) is 90% by mass or more.
[3] The emulsion composition according to [1] or [2], wherein the ratio (OMG / SE) is 0.01 or more and less than 0.14.
[4] The emulsion composition according to any one of [1] to [3], wherein the organic acid monoglyceride is diacetyltartaric acid monoglyceride.
[5] The emulsified composition according to any one of the above [1] to [4], wherein an average particle diameter of oil droplets of the emulsified composition after dilution with water is 1.2 μm or less.
[6] An acidic food containing the emulsion composition according to any one of [1] to [5].
[7] An acidic beverage containing the emulsified composition according to any one of [1] to [5].

  Advantageous Effects of Invention According to the present invention, it is possible to provide an emulsified composition which is stable in emulsification under acidic conditions using a sugar ester, regardless of the content of the monoester, and an acidic food and an acidic beverage containing the emulsified composition.

(Emulsion composition)
The emulsified composition according to the embodiment of the present invention contains 20 to 80% by mass of a polyhydric alcohol, 10 to 70% by mass of an oil-soluble substance (excluding an emulsifier), and a sugar ester and an organic acid monoglyceride as an emulsifier, The ratio (OMG / SE) of the content (OMG) of the organic acid monoglyceride and the content (SE) of the sugar ester is 0.01 or more and less than 0.6. The emulsified composition according to the embodiment of the present invention has acid resistance. Here, acid resistance means that an oil phase and an aqueous phase do not separate and maintain an emulsified state even under conditions of pH 6 or less.

(Polyhydric alcohol)
The polyhydric alcohol used in the embodiment of the present invention may be one having two or more hydroxyl groups in the molecule. For example, glycerin; polyglycerin such as diglycerin, triglycerin, and tetraglycerin; monosaccharides such as glucose, fructose, and galactose; disaccharides such as maltose and lactose; oligosaccharides; Sugar alcohol; propylene glycol. These may be used alone or in combination of two or more. In particular, it is preferable to use glycerin or sorbitol from the viewpoint of long-term storage.

  The emulsified composition according to the present embodiment contains a polyhydric alcohol as an aqueous phase component, and contains 20 to 80% by mass of the polyhydric alcohol as a solid content. It is preferably from 23 to 70% by mass, more preferably from 26 to 60% by mass. The polyhydric alcohol is preferably contained in the aqueous phase in an amount of 20% by mass or more, more preferably 50% by mass or more, even more preferably 70% by mass or more. By using a polyhydric alcohol, an emulsified composition comprising finer emulsified droplets can be obtained, and the finally obtained acidic food or acidic beverage has higher emulsification stability. By setting the content of the polyhydric alcohol within the above range, a stable emulsion composition can be obtained even under acidic conditions.

(Oil-soluble substance)
The oil-soluble substance used in the embodiment of the present invention has a property of dissolving in oil or fat (acylglycerol) in a heated or unheated state, and is not particularly limited as long as it is other than an emulsifier. For example, fatty acids, fats and oils, waxes, and fat-soluble vitamins can be mentioned.

  Examples of the fatty acids include lauric acid, myristic acid, palmitic acid, isopalmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, ricinoleic acid, behenic acid, hexadecatrienoic acid, octadecatrienoic acid, eicosa Examples include tetraenoic acid, docosatetraenoic acid, eicosapentaenoic acid, docosapentaenoic acid, docosahexaenoic acid, tetrahexaenoic acid and isomers thereof.

  The fats and oils are glycerin esters of fatty acids, for example, soybean oil, rapeseed oil, corn oil, olive oil, palm oil, cottonseed oil, safflower oil, rice oil, sunflower oil, sesame oil, and these hardened oils, transesterified oils or Examples include vegetable oils such as fractionated oils, lard, beef tallow, milk fat, fish oil, and animal fats and oils such as hardened oils thereof, transesterified oils and fractionated oils. Further, synthetic fats and oils such as medium-chain fatty acid triglyceride and the like can be mentioned.

  The wax is an ester of a fatty acid and a higher monohydric or dihydric alcohol, and examples thereof include jojoba oil, rice wax, propolis, carnauba wax, candy wax, and beeswax.

  Examples of the fat-soluble vitamin include vitamins A, D, E, K, and derivatives thereof.

  The above-mentioned oil-soluble substances such as fatty acids, oils and fats, waxes and fat-soluble vitamins may be used alone or in combination of two or more.

  The emulsified composition according to the present embodiment contains an oil-soluble substance (excluding an emulsifier) in an amount of 10 to 70% by mass. Preferably it is 20 to 60% by mass, more preferably 30 to 50% by mass, even more preferably 35 to 45% by mass. By setting the content of the fat or oil in the above range, a stable emulsion composition can be obtained even under acidic conditions.

  In the emulsified composition according to the present embodiment, the total content of the polyhydric alcohol and the oil-soluble substance (excluding the emulsifier) is preferably 65% by mass or more, more preferably 70% by mass or more, and 75% by mass or more. More preferably, it is not less than mass%.

(emulsifier)
The emulsified composition according to the present embodiment contains a sugar ester and an organic acid monoglyceride as an emulsifier.

  Sugar esters can be obtained, for example, by a transesterification reaction between sucrose and fatty acid methyl, and are not limited to monoesters having high acid resistance when the content is high, and esters having high lipophilicity such as diesters and triesters. The body may be included. The monoester content is preferably at least 50% by mass, more preferably at least 60% by mass, even more preferably at least 70% by mass. Sugar esters may be used in combination of two or more.

  In the sugar ester, 65% by mass or more of the constituent fatty acids preferably have 10 or more carbon atoms, more preferably 80% by mass or more of the constituent fatty acids have 10 or more carbon atoms, and 90% by mass or more of the constituent fatty acids have carbon atoms. It is more preferably several tens or more, and most preferably 100% by mass of the constituent fatty acids has ten or more carbon atoms.

  As the fatty acid having 10 or more carbon atoms, a saturated fatty acid having 10 or more carbon atoms is preferable, and examples thereof include capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and behenic acid.

  The sugar ester preferably has an HLB value of 10 or more, more preferably 12 or more.

  The emulsified composition according to the present embodiment preferably contains sugar ester in an amount of 1 to 11% by mass, more preferably 1 to 9% by mass, and even more preferably 1.5 to 7% by mass. , 2 to 5% by mass.

  The organic acid monoglyceride can be obtained by an esterification reaction between an organic acid and a monoglyceride or a synthesis reaction from an organic acid, a fatty acid and glycerin, and examples thereof include diacetyltartaric acid monoglyceride, succinic acid monoglyceride, citric acid monoglyceride, and acetate monoglyceride. . Particularly, diacetyltartaric acid monoglyceride is preferred. Diacetyltartaric acid monoglyceride can be obtained, for example, from monoglyceride and acetylated tartaric anhydride. These may be used alone or in combination of two or more.

  The HLB value of the organic acid monoglyceride is preferably from 1 to 11, and more preferably from 1.5 to 10.

  The emulsified composition according to the present embodiment preferably contains 0.01 to 3% by mass of organic acid monoglyceride, more preferably 0.05 to 2.5% by mass, and 0.1 to 2% by mass. %, More preferably 0.4 to 1.5% by mass.

  In the emulsified composition according to the present embodiment, the ratio (OMG / SE) of the content of organic acid monoglyceride (OMG) to the content of sugar ester (SE) (OMG / SE) is 0.01 or more and less than 0.6. By setting the above ratio (OMG / SE) within the above range, a stable emulsion composition can be obtained even under acidic conditions. The upper limit of the above ratio (OMG / SE) is preferably less than 0.4, more preferably less than 0.3, even more preferably less than 0.14, and less than 0.13. Is most preferred. Further, the lower limit of the above ratio (OMG / SE) is preferably 0.02 or more, more preferably 0.04 or more, still more preferably 0.06 or more, and 0.08 or more. Is most preferred.

  In addition to the above emulsifiers, edible emulsifiers can be used as appropriate as other emulsifiers. Examples include synthetic emulsifiers such as glycerin fatty acid ester, sorbitan fatty acid ester and propylene glycol fatty acid ester, and natural emulsifiers such as phospholipid, lysophospholipid, saponin and the like.

(Production method)
The emulsified composition according to the embodiment of the present invention is obtained by mixing a water-soluble component such as a polyhydric alcohol, a water-soluble emulsifier, and water to be added as necessary with a homomixer or the like, into an oil-soluble substance (emulsifier). ) Can be prepared by adding oil-soluble components such as The organic acid monoglyceride used in the present invention is usually added as an oil-soluble component, but can also be added as a water-soluble component. After diluting the obtained emulsified composition in water, the average particle size of the oil droplets can be measured using a laser diffraction type particle size distribution analyzer or the like. The average particle size of the oil droplets of the emulsified composition according to the embodiment of the present invention after dilution with water is preferably 1.2 μm or less, more preferably 1.0 μm or less.

(Acid foods and beverages)
The acidic food and the acidic beverage according to the embodiment of the present invention contain the emulsified composition according to the embodiment of the present invention. By adding and mixing the emulsified composition according to the embodiment of the present invention with an acidic food or acidic beverage, an acidic beverage or acidic food with stable emulsification can be obtained.

  The acidic foods and acidic beverages referred to in the present invention refer to foods and beverages having a pH of 6 or less due to use of an acidulant or fruit juice. For example, yogurt, citrus fruit, jelly containing fruit juice, whipped cream containing fruit juice (whipped mix), dressing, vinegar, soy sauce, lactic acid drink, carbonated drink, sports drink, coffee and the like can be mentioned. The average particle size of oil droplets in acidic foods and acidic beverages is preferably 1.2 μm or less, more preferably 1.0 μm or less.

  An appropriate amount of the emulsified composition according to the embodiment of the present invention is appropriately added depending on the type of acidic food or acidic beverage.

  Next, the present invention will be described in detail with reference to Examples and Comparative Examples. However, the present invention is not limited to these examples.

<Preparation of emulsion composition>
According to the formulation in Table 1, water-soluble components (polyhydric alcohol, water-soluble emulsifier, water) were stirred and mixed at 75 ° C. to obtain a uniform solution. While maintaining the temperature of 75 ° C., the oil-soluble component adjusted to 75 ° C. was added to the place where stirring was performed at 5000 rpm using a homomixer (“A homomixer 2M-05” manufactured by Primix Co., Ltd.). After the addition, the mixture was further stirred at 8000 rpm for 5 minutes to obtain emulsified compositions of Examples 1 to 10 and Comparative Examples 1 and 2. Table 1 shows the results of measuring the average particle size of the oil droplets after dilution with water for the obtained emulsion composition by the following method.

<Method of measuring average particle diameter of oil droplets>
After dissolving the emulsified composition or each beverage in water, the average particle diameter of oil droplets was measured using a laser diffraction type particle size distribution analyzer SALD-300V (manufactured by Shimadzu Corporation).

<Oil-soluble substance used>
Rapeseed oil (manufactured by Nisshin Oillio Group Co., Ltd.)

<Polyhydric alcohol used>
[Glycerin]: 98.5% or more glycerin solution (trade name "Glycerin", manufactured by Kao Corporation)
[Sorbit D-70]: 70% aqueous solution of sorbitol (trade name "Sorbit D-70", manufactured by Mitsubishi Corporation Foodtech Co., Ltd.)

<Emulsifier used>
Water-soluble emulsifier [F-160]: Sugar ester (constituent fatty acid: stearic acid 70% + palmitic acid 30%, monoester content: 70% by mass, HLB 15, trade name "DK Ester F160", Daiichi Kogyo Seiyaku Co., Ltd.) Made by company)
[F-140]: Sugar ester (constituting fatty acid: stearic acid 70% + palmitic acid 30%, monoester content: 60% by mass, HLB13, trade name "DK Ester F-140", manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) )
-Organic acid monoglyceride (added as an oil-soluble component in this example)
[K-30]: Citrate monoglyceride (stearin type) (HLB3.0, trade name "Poem K-30", manufactured by Riken Vitamin Co., Ltd.)
[B-30]: Succinic acid monoglyceride (stearin type) (HLB 5.5, trade name “Poem B-30”, manufactured by Riken Vitamin Co., Ltd.)
[G-002]: monoglyceride acetate (laurin type) (HLB2.0, trade name "Poem G-002", manufactured by Riken Vitamin Co., Ltd.)
[W-60]: Diacetyltartaric acid monoglyceride (stearin type) (HLB9.5, trade name "Poem W-60", manufactured by Riken Vitamin Co., Ltd.)

<Acid resistance test of emulsion composition>
The obtained emulsified composition was diluted 10 times with 1% aqueous citric acid (pH 2.2), 0.1% aqueous citric acid (pH 2.8), sports drink (pH 3.7), and carbonated water (pH 4.4). , Coffee (pH 5.7) or green tea (pH 6.1), mixed and allowed to stand for 5 minutes, and then the average particle diameter of oil droplets in each beverage was measured by the method described above. Immediately after the addition and mixing of the emulsion composition, those separated into an oil phase and an aqueous phase were not measured. Table 2 shows the results. The pH of each beverage did not change before and after the addition of the emulsion composition.

  From Table 2, it can be seen that the emulsified compositions of Examples 1 to 10 using the sugar ester and the organic acid monoglyceride in combination did not separate even when added to a liquid having a pH of 6 or less, and had acid resistance. In particular, when diacetyltartaric acid monoglyceride is used and the OMG / SE ratio is 0.1 or more, no separation occurs even when added to a 1% aqueous citric acid solution having a pH of 2.2, indicating that the acid resistance is more excellent. .

  On the other hand, the emulsified compositions of Comparative Examples 1 and 2, which do not contain the organic acid monoglyceride, show the separation of the oil phase and the aqueous phase soon after being added to the liquid having a pH of 6 or less, indicating that they do not have acid resistance.

Claims (6)

20 to 80% by mass of a polyhydric alcohol, 10 to 70% by mass of an oil-soluble substance (excluding an emulsifier), and a sugar ester and an organic acid monoglyceride as an emulsifier,
Wherein Ri ratio (OMG / SE) is 0.01 or more less than 0.6 der content of an organic acid monoglyceride (OMG) and the amount of the sugar esters (SE),
The total content of the polyhydric alcohol and the oil-soluble substance (excluding the emulsifier) is 65% by mass or more;
The average particle size of the oil droplets after dilution with water of the emulsion composition is 1.2 μm or less,
An emulsified composition , wherein the sugar ester has an HLB of 12 or more . 20 to 80% by mass of a polyhydric alcohol, 10 to 70% by mass of an oil-soluble substance (excluding an emulsifier), and a sugar ester and an organic acid monoglyceride as an emulsifier,
Wherein Ri ratio (OMG / SE) is 0.01 or more less than 0.6 der content of an organic acid monoglyceride (OMG) and the amount of the sugar esters (SE),
The total content of the polyhydric alcohol and the oil-soluble substance (excluding the emulsifier) is 65% by mass or more;
An emulsion composition having an average particle diameter of oil droplets of 1.2 μm or less after dilution of the emulsion composition with water (provided that high-pressure fatty acid-containing edible oils and fats are subjected to high-pressure emulsification treatment plural times, Excluding fats and oils emulsions obtained by adjusting the total processing pressure on the edible fats and oils in the treatment to 40 MPa or more) .   The emulsion composition according to claim 1, wherein the ratio (OMG / SE) is 0.01 or more and less than 0.14.   The emulsion composition according to any one of claims 1 to 3, wherein the organic acid monoglyceride is diacetyltartaric acid monoglyceride. An acidic food containing the emulsified composition according to any one of claims 1 to 4 . An acidic beverage containing the emulsified composition according to any one of claims 1 to 4 .