Sodium lactate-containing powder and method for producing the same

Abstract

To provide a sodium lactate-containing powder which does not impart an undesirable taste to food, does not affect the mouthfeel, and is soluble in water, and a method for producing the same.SOLUTION: Provided is a sodium lactate-containing powder, comprising: a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates; and sodium lactate attached to or adsorbed on the base material.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a sodium lactate-containing powder and a method for producing the same. [Background technology]

[0002] Sodium lactate has excellent moisture retention and water activity reducing properties, and is used as a pH adjuster for food. It is usually distributed as a 40-60% by mass aqueous solution. However, with the spread of processed foods, processors are demanding powdered versions of these products, but the problem is that sodium lactate is extremely difficult to powder by itself due to its nature. Therefore, the following technologies have been utilized.

[0003] Patent Document 1 discloses a powder in which sodium lactate is adsorbed onto calcium lactate powder by spray drying. Also, a sodium lactate preparation consisting of calcium lactate and sodium lactate, as described in Non-Patent Document 1, is on the market.

[0004] Patent Document 2 discloses that by adding powdered cellulose to an aqueous solution of lactic acid, sodium lactate, or potassium lactate, and then drying and dehydrating the resulting solution, powdered lactic acid, powdered sodium lactate, or powdered potassium lactate, or a mixture thereof, maintains good fluidity even after storage at 30°C and 60% humidity for one month.

[0005] Patent Document 3 discloses a powdered food additive preparation in which lactate salts (sodium lactate, potassium lactate, ammonium lactate or calcium lactate) are supported on defatted soybean powder. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Special Publication No. 2015-531754 [Patent Document 2] Japanese Patent Application Publication No. 8-20556 [Patent Document 3] JP 2005-328795 A [Non-patent literature]

[0007] [Non-Patent Document 1] Musashino Chemical Laboratory Co., Ltd., LN Powder, LN Powder F [Searched on September 13, 2023]<URL:https: / / www.musashino.com / product / 2261 / > Summary of the Invention [Problem to be solved by the invention]

[0008] In Patent Document 1 and Non-Patent Document 1, calcium lactate is contained, but there is a problem that calcium lactate has a unique taste. In addition, when calcium is contained, there is also a problem that the amount of calcium that can be used is limited in foods other than those labeled with a special use label.

[0009] In Patent Document 2, powdered cellulose is contained, but since powdered cellulose is insoluble, there are problems in that the solution becomes cloudy or a precipitate is formed, and there is also a problem in that the texture becomes rough.

[0010] Patent Document 3 has a problem that the powdered food additive preparation does not dissolve in water, making the solution cloudy or causing the formation of precipitates.

[0011] Therefore, an object of the present invention is to provide a sodium lactate-containing powder that does not impart an unpleasant taste to food, does not affect the texture, and is soluble in water, and a method for producing the same. [Means for solving the problem]

[0012] The above problems are solved by the present invention. That is, the present invention (1) relates to a base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonates; sodium lactate attached or adsorbed to the substrate; The present invention provides a sodium lactate-containing powder comprising:

[0013] The present invention (2) also provides a sodium lactate-containing powder according to (1), characterized in that the sodium lactate content is 10 to 95 mass %.

[0014] The present invention (3) also provides a sodium lactate-containing powder according to (1) or (2), characterized in that the moisture content is 18.0% by mass or less.

[0015] The present invention (4) also provides a sodium lactate-containing powder according to (1) or (2), which has an angle of repose of 30 to 55 degrees.

[0016] The present invention (5) also provides a sodium lactate-containing powder according to (1) or (2), characterized in that the organic acid salt is at least one selected from the group consisting of malate, citrate, fumarate and tartrate.

[0017] The present invention (6) also provides a sodium lactate-containing powder according to (1) or (2), characterized in that the base material contains at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate, and potassium carbonate.

[0018] The present invention (7) also includes a powder preparation step of contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates, and then stirring or heating and stirring, or contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates while stirring or heating and stirring, to obtain a sodium lactate-containing powder, The moisture content of the substrate is 2.0% by mass or less; The present invention provides a method for producing a sodium lactate-containing powder, comprising the steps of:

[0019] The present invention (8) also provides a method for producing a sodium lactate-containing powder according to (7), characterized in that the organic acid salt and the carbonate are anhydrous. Effect of the Invention

[0020] According to the present invention, it is possible to provide a sodium lactate-containing powder that does not impart an unpleasant taste to food, does not affect the texture, and is soluble in water, and a method for producing the same. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] The sodium lactate-containing powder of the present invention is A base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates; sodium lactate attached or adsorbed to the substrate; The sodium lactate-containing powder is characterized by comprising:

[0022] The sodium lactate-containing powder of the present invention is a powder in which at least sodium lactate is attached or adsorbed to specific base particles. In the sodium lactate-containing powder of the present invention, a small amount of an aqueous sodium lactate solution may be attached or adsorbed to the specific base particles.

[0023] The sodium lactate-containing powder of the present invention contains, as a base material, at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts. The base material is mainly formed of at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts, that is, the base material mainly consists of at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts. There are no particular limitations on the organic acid salts as long as they can be used as food additives and do not impair the effects of the present invention. As the base material, at least one selected from the group consisting of malates, citrates, fumarates, tartrates and carbonates is preferred in that it does not give an unpleasant taste to food, does not affect the texture, dissolves in water, and makes it easy to obtain a sodium lactate-containing powder that produces a transparent solution.

[0024] The organic acid salt and carbonate salt are not particularly limited as long as they can be used as food additives and do not impair the effects of the present invention, and examples thereof include metal salts. Examples of metal salts include alkali metal salts and alkaline earth metal salts. Examples of alkali metal salts include sodium salts and potassium salts, and sodium salts are preferred. When the organic acid salt and carbonate salt are sodium salts, it becomes easier to obtain a sodium lactate-containing powder that is less likely to have an unpleasant taste. Examples of alkaline earth metal salts include magnesium salts and calcium salts.

[0025] The sodium lactate-containing powder of the present invention can contain at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate, and potassium carbonate as a base material, and preferably contains at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, and tripotassium citrate. In other words, the base material can mainly contain at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate, and potassium carbonate, and preferably consists of at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, and tripotassium citrate.

[0026] In the sodium lactate-containing powder of the present invention, the substrate to which sodium lactate is attached or adsorbed is at least one type of primary particle selected from the group consisting of organic acid salts and carbonates, or secondary particles formed by aggregation of such primary particles.

[0027] The sodium lactate-containing powder of the present invention contains sodium lactate attached or adsorbed to a substrate. It may also contain an aqueous solution of sodium lactate attached or adsorbed to a substrate. Examples of the state of sodium lactate present in the sodium lactate-containing powder of the present invention include (i) attached to the surface of the substrate particles (primary particles or secondary particles) as solid sodium lactate particles, (ii) attached or adsorbed within the substrate particles (secondary particles) as solid sodium lactate particles, etc. Also, (iii) attached or adsorbed to the surface of the substrate particles (primary particles or secondary particles) as an aqueous sodium lactate solution, and (iv) adsorbed within the substrate particles (secondary particles) as an aqueous sodium lactate solution, etc.

[0028] The sodium lactate content of the sodium lactate-containing powder of the present invention is preferably 10 to 95% by mass, more preferably 20 to 90% by mass, more preferably 30 to 85% by mass, and more preferably 50 to 80% by mass. When the sodium lactate content of the sodium lactate-containing powder is within the above range, it exhibits moisture retention and water activity reducing ability, and is more likely to function as a pH adjuster for food. On the other hand, if the sodium lactate content of the sodium lactate-containing powder is less than the above range, the moisture retention and water activity reducing ability are weakened, and if it exceeds the above range, sodium lactate is more likely to deliquesce. In the present invention, the sodium lactate content of the sodium lactate-containing powder of the present invention refers to the content ratio of sodium lactate to the solid content excluding moisture. The sodium lactate content of the sodium lactate-containing powder of the present invention can be increased to the above value by combining an organic acid salt and / or a carbonate salt, extending the stirring time or heating and stirring time during production, etc.

[0029] The moisture content of the sodium lactate-containing powder of the present invention is preferably 18.0% by mass or less, more preferably 15.0% by mass or less, and more preferably 10.0% by mass or less. When the moisture content of the sodium lactate-containing powder is within the above range, it is likely to become powdery. On the other hand, when the moisture content of the sodium lactate-containing powder exceeds the above range, it is likely to become pasty. In the present invention, the moisture content is a value measured by a volumetric method using a Karl Fischer moisture meter (MKS-520 manufactured by Kyoto Electronics Manufacturing Co., Ltd.) in accordance with JIS K0068. In addition, in the present invention, the moisture content of the sodium lactate-containing powder is the content including the crystal water of organic acid salts (excluding lactates) and carbonates forming the base material.

[0030] The angle of repose of the sodium lactate-containing powder of the present invention is preferably 30 to 55 degrees, more preferably 30 to 50 degrees, and more preferably 33 to 40 degrees. When the angle of repose of the sodium lactate-containing powder is within the above range, the fluidity is maintained and the powder is easily handled. It is to be noted that a paste-like powder does not have an angle of repose and therefore cannot be measured. In the present invention, the angle of repose is a value measured by the injection method in accordance with the 18th Edition Japanese Pharmacopoeia Reference Information on Powder Fluidity (G2-3-171). The angle of repose of the sodium lactate-containing powder of the present invention can be improved in fluidity, i.e., the angle of repose can be reduced, by adjusting the blending of an organic acid salt and / or a carbonate salt.

[0031] The sodium lactate-containing powder of the present invention may further contain other water-soluble components, such as the following: · Organic acids other than sodium lactate (e.g. malic acid, gluconic acid, citric acid, tartaric acid, succinic acid, fumaric acid, etc.); Nucleic acids (e.g., sodium 5-inosinate, sodium 5-guanylate, etc.); Sugars (e.g., monosaccharides such as glucose; disaccharides such as sucrose; polysaccharides such as starch, modified starch, dextrin, CMC, etc.) · Table salt; Food ingredients (e.g. animal extracts, plant extracts, etc.). These components may be used alone or in combination of two or more. The content of each of these components (or the total content) in the sodium lactate-containing powder of the present invention may be, for example, 20% by mass or less, 15% by mass or less, 10% by mass or less, or 5% by mass or less, or 0.01% by mass or more, 0.05% by mass or more, 0.1% by mass or more, 0.5% by mass or more, or 1.0% by mass or more.

[0032] The sodium lactate-containing powder of the present invention is used, for example, as a food additive, specifically, as a pH adjuster for food. The sodium lactate-containing powder of the present invention is used in fresh foods, beverages, processed seafood foods used in boxed lunches and side dishes, processed livestock foods, paste salads, noodles such as pasta and udon, cooked rice, rice cakes, confectionery, cooking and seasoning materials, etc., but is not limited thereto.

[0033] The sodium lactate-containing powder of the present invention may be produced by any production method, and is preferably produced by the sodium lactate-containing powder of the present invention described below.

[0034] The method for producing a sodium lactate-containing powder of the present invention comprises the steps of: The method includes a powder preparation step of contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates, and then stirring or heating and stirring, or contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates while stirring or heating and stirring, to obtain a sodium lactate-containing powder, The moisture content of the substrate is 2.0% by mass or less; The present invention relates to a method for producing a sodium lactate-containing powder.

[0035] The powder preparation step in the method for producing a sodium lactate-containing powder of the present invention is a step of contacting and stirring, or heating and stirring, an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonates, to obtain a sodium lactate-containing powder.

[0036] The aqueous solution containing at least sodium lactate in the powder preparation step is not particularly limited, but may be, for example, an aqueous solution of sodium lactate. The concentration of sodium lactate in the aqueous solution containing sodium lactate is not particularly limited, but is preferably 50% by mass or more, more preferably 50 to 75% by mass, and more preferably 50 to 70% by mass. When the concentration of sodium lactate in the aqueous solution containing sodium lactate is within the above range, it becomes easier to obtain a powdered material containing sodium lactate. On the other hand, if the concentration of sodium lactate in the aqueous solution containing sodium lactate is less than the above range, it becomes difficult to make the material containing sodium lactate into a powder, and on the other hand, if it exceeds the above range, the viscosity is high at room temperature, making it difficult to handle during production.

[0037] The aqueous solution containing at least sodium lactate in the powder preparation step may contain other water-soluble components in addition to sodium lactate. Examples of the other water-soluble components include the following components. · Organic acids other than sodium lactate (e.g. malic acid, gluconic acid, citric acid, tartaric acid, succinic acid, fumaric acid, etc.); Nucleic acids (e.g., sodium 5-inosinate, sodium 5-guanylate, etc.); Sugars (e.g., monosaccharides such as glucose; disaccharides such as sucrose; polysaccharides such as starch, modified starch, dextrin, CMC, etc.) · Table salt; Food ingredients (e.g. animal extracts, plant extracts, etc.). These components may be used alone or in combination of two or more.

[0038] The base material in the powder preparation step is a base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts. The base material is mainly formed of at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts, that is, the base material mainly consists of at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts. The organic acid salt is not particularly limited as long as it can be used as a food additive and does not impair the effects of the present invention. As the base material, at least one selected from the group consisting of malate salts, citrate salts, fumarate salts, tartrate salts and carbonate salts is preferred in that it does not give an unpleasant taste to food, does not affect the texture, dissolves in water, and makes it easy to obtain a sodium lactate-containing powder in which the dissolving solution is transparent.

[0039] The organic acid salt and carbonate salt are not particularly limited as long as they can be used as food additives and do not impair the effects of the present invention, and examples thereof include metal salts. Examples of metal salts include alkali metal salts and alkaline earth metal salts. Examples of alkali metal salts include sodium salts and potassium salts, and preferably sodium salts. When the organic acid salt and carbonate salt are sodium salts, it becomes easier to obtain a sodium lactate-containing powder that is less likely to have an unpleasant taste. Examples of alkaline earth metal salts include magnesium salts and calcium salts. In addition, the base material can contain at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate, and potassium carbonate, and preferably contains at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, and tripotassium citrate. In other words, the base material can mainly contain at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate, and potassium carbonate, and preferably consists of at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, and tripotassium citrate.

[0040] The base material in the powder preparation step is primary particles of at least one type of material selected from the group consisting of organic acid salts and carbonates, or secondary particles formed by agglomeration of the primary particles.

[0041] The moisture content of the base material in the powder preparation step is 2.0% by mass or less, preferably 1.5% by mass or less, and more preferably 1.0% by mass or less. When the moisture content of the base material is within the above range, a powdery sodium lactate-containing material is obtained. On the other hand, when the moisture content of the base material exceeds the above range, a paste-like sodium lactate-containing material is obtained.

[0042] The organic acid salt and carbonate forming the base material are preferably anhydrous. In the present invention, anhydrous refers to one that does not have any water of crystallization and one that contains water at a ratio of 2.0 mass% or less. By using anhydrous organic acid salts and carbonates forming the base material, a powdered sodium lactate-containing material can be obtained.

[0043] In the powder preparation step, (i) an aqueous solution containing at least sodium lactate is contacted with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts to obtain a contact product, and then the obtained contact product is stirred or heated and stirred to obtain a sodium lactate-containing powder; or (ii) an aqueous solution containing at least sodium lactate is contacted with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonate salts while stirring or heated and stirred, to obtain a sodium lactate-containing powder.

[0044] In the powder preparation step, examples of the method for contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates include (i) a method of dropping an aqueous solution containing at least sodium lactate onto a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates, and (ii) a method of mixing the base material with an aqueous solution containing sodium lactate. Of these, the contact method (i) is preferred in that it is easy to obtain a powdered sodium lactate-containing material.

[0045] In the powder preparation step, the heating temperature during heating and stirring of the aqueous solution containing at least sodium lactate and the base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates is preferably 70°C or higher, more preferably 100°C or higher. When the heating temperature during heating and stirring in the powder preparation step is within the above range, a powdered sodium lactate-containing material is easily obtained. In the powder preparation step, the stirring time or heating and stirring time during stirring or heating and stirring of the aqueous solution containing at least sodium lactate and the base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates is appropriately selected depending on the amount of material, heating temperature, production equipment, etc., but is preferably 30 minutes or more, more preferably 50 minutes or more.

[0046] In the powder preparation step, stirring or heating and stirring can be performed until the moisture content of the resulting sodium lactate-containing powder is preferably 18.0% by mass or less, more preferably 15.0% by mass or less, and more preferably 10.0% by mass or less. In addition, in the powder preparation step, stirring or heating and stirring can be performed until the angle of repose of the resulting sodium lactate-containing powder is preferably 30 to 55 degrees, preferably 30 to 50 degrees, and more preferably 33 to 40 degrees.

[0047] In the powder preparation step, the ratio of the amount of an aqueous solution containing at least sodium lactate used to the base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonates is preferably 12 to 2,000 parts by mass, more preferably 50 to 2,000 parts by mass, and more preferably 100 to 2,000 parts by mass, calculated as sodium lactate, per 100 parts by mass of the base material containing at least one selected from the group consisting of organic acid salts (excluding lactate salts) and carbonates.

[0048] In the method for producing the sodium lactate-containing powder of the present invention, a powder preparation step is carried out, in which sodium lactate or an aqueous sodium lactate solution comes into contact with the base material, some or all of the water is evaporated and removed, and the sodium lactate or aqueous sodium lactate solution adheres to or is adsorbed onto the base material, thereby obtaining the sodium lactate-containing powder of the present invention.

[0049] The sodium lactate content of the sodium lactate-containing powder obtained by carrying out the method for producing a sodium lactate-containing powder of the present invention is preferably 10 to 95% by mass, more preferably 20 to 90% by mass, more preferably 30 to 85% by mass, more preferably 50 to 80% by mass. The moisture content of the sodium lactate-containing powder obtained by carrying out the method for producing a sodium lactate-containing powder of the present invention is preferably 18.0% by mass or less, more preferably 15.0% by mass or less, more preferably 10.0% by mass or less. The angle of repose of the sodium lactate-containing powder obtained by carrying out the method for producing a sodium lactate-containing powder of the present invention is preferably 30 to 55 degrees, more preferably 30 to 50 degrees, more preferably 33 to 40 degrees.

[0050] The present invention will be specifically described below by showing examples, but the present invention is not limited to the examples shown below. EXAMPLES

[0051] The sodium lactate-containing powder of the present invention will be described below with reference to examples, although the present invention is not limited to these embodiments.

[0052] <Ingredients> 1) Sodium lactate 60% aqueous solution (product name: sodium lactate (60%); manufactured by Fuso Chemical Co., Ltd.) 2) Sodium lactate 50% aqueous solution (product name: sodium lactate (50%); manufactured by Fuso Chemical Co., Ltd.) 3) Sodium malate (product name: DL-sodium malate; moisture content 6.8% by mass; manufactured by Fuso Chemical Co., Ltd.) dried to anhydrous state (moisture content 2.0% by mass or less). 4) Trisodium citrate (product name: purified sodium citrate; moisture content 12.8% by mass; manufactured by Fuso Chemical Co., Ltd.) dried to anhydrous state (moisture content 2.0% by mass or less). 5) Sodium carbonate (product name: soda ash; moisture content 1.7% by mass; manufactured by Tokuyama Corporation) 6) Sodium fumarate (product name: monosodium fumarate; water content 0.5% by mass; manufactured by Fuso Chemical Co., Ltd.) 7) Tripotassium citrate (product name: purified tripotassium citrate; moisture content 6.5% by mass; manufactured by Fuso Chemical Co., Ltd.) dried to anhydrous state (moisture content 2.0% by mass or less). 8) Potassium carbonate (product name: Potassium Carbonate FG; moisture content 4.9% by mass; manufactured by AGC) dried to anhydrous state (moisture content 2.0% by mass or less).

[0053] The substrates 3), 4), 7), and 8) were dried in a tray dryer to an anhydrous state (moisture content of 2.0% by mass or less) and used in the following examples and comparative examples.

[0054] <Preparation of sodium lactate-containing powder> [Example 1] 50 parts by mass of the above sodium malate was mixed with 50 parts by mass of 60% aqueous sodium lactate solution dropwise while heating at 70°C for 40 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), to obtain a flowable sodium lactate-containing powder (sodium lactate content in solids: 37% by mass).

[0055] [Example 2] 50 parts by mass of 60% aqueous sodium lactate solution was added dropwise to 30 parts by mass of the above trisodium citrate while heating and stirring at 70°C for 50 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), resulting in a fluid sodium lactate-containing powder (sodium lactate content in solids: 50% by mass).

[0056] [Example 3] 50 parts by mass of a 50% aqueous sodium lactate solution was added dropwise to 50 parts by mass of the above sodium carbonate while heating and stirring at 70°C for 40 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), resulting in a fluid sodium lactate-containing powder (sodium lactate content in the solids: 33% by mass).

[0057] [Example 4] 50 parts by mass of 60% sodium lactate aqueous solution was added dropwise to 30 parts by mass of the above sodium fumarate while heating and stirring at 70°C for 40 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), resulting in a fluid sodium lactate-containing powder (sodium lactate content in solids: 50% by mass).

[0058] [Example 5] 50 parts by mass of the above tripotassium citrate was mixed with 50 parts by mass of 50% aqueous sodium lactate solution dropwise while heating and stirring at 70°C for 40 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), to obtain a fluid sodium lactate-containing powder (sodium lactate content in solids: 33% by mass).

[0059] [Example 6] 50 parts by mass of a 50% aqueous sodium lactate solution was added dropwise to 100 parts by mass of the above potassium carbonate while heating and stirring at 70°C for 30 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), resulting in a fluid sodium lactate-containing powder (sodium lactate content in solids: 20% by mass).

[0060] [Example 7] When 600 parts by mass of a 70% aqueous sodium lactate solution was added dropwise to 100 parts by mass of the above sodium carbonate while heating and stirring at 70°C for 90 minutes in a high-speed mixer (EarthTechnica Corporation: LFS-GS-2J), a fluid sodium lactate-containing powder (sodium lactate content in solids: 80% by mass) was obtained.

[0061] [Comparative Example 1] 55 parts by weight of calcium lactate was mixed with 75 parts by weight of a 60% aqueous sodium lactate solution, and the mixture was dried by heating at 105°C for 3 hours in a tray dryer. The mixture was then pulverized to obtain a sodium lactate-containing powder.

[0062] [Comparative Example 2] 100 parts by weight of powdered cellulose was mixed with 60 parts by weight of a 60% aqueous sodium lactate solution, and the mixture was dehydrated and dried in a tray dryer at 105°C for 2 hours, and then pulverized to obtain a sodium lactate-containing powder.

[0063] (Measurement of moisture content) The moisture content was measured by the volumetric method using a Karl Fischer moisture meter (Kyoto Electronics Manufacturing Co., Ltd.: MKS-520) in accordance with JIS K0068.

[0064] (Measurement of angle of repose) The measurements were performed using the injection method in accordance with the 18th Edition Japanese Pharmacopoeia Reference Information for Powder Fluidity (G2-3-171).

[0065] <Sensory evaluation of sodium lactate-containing powder using chicken meatballs> (Examples 1 to 7, Comparative Examples 1 and 2) Examples 1 to 7 and Comparative Examples 1 and 2 were added to a dough consisting of 85 parts by mass of chicken meat, 1 part by mass of seasoning, and 14 parts by mass of cold water so that the sodium lactate content was 0.4% by mass, mixed, shaped, and baked, and then a sensory evaluation of the taste and texture was conducted by 10 panelists. Regarding taste, each test group was compared with the no-additive group, and a score was assigned to each group, with 2 points for no strange taste and very good taste, 1 point for no strange taste and slightly good taste, 0 point for taste equivalent to the no-additive group, -1 point for strange taste and slightly bad taste, and -2 points for strange taste and very bad taste. The average of the evaluations of the 10 panelists was then obtained. The texture of each test group was compared with that of the no-additive group, and a very good texture was scored as 2 points, a slightly good texture was scored as 1 point, a texture equivalent to that of the no-additive group was scored as 0 points, a slightly poor texture was scored as -1 point, and a very poor texture was scored as -2 points. The average of the evaluations by the 10 panelists was then calculated. The average values ​​of taste and texture obtained by sensory evaluation are shown in Table 1.

[0066] [Table 1]

[0067] <Measurement of moisture content> The measurement results of the moisture content of the sodium lactate-containing powders of Examples 1 to 7 are shown in Table 2.

[0068] [Table 2]

[0069] <Measurement of angle of repose> The measurement results of the angles of repose of the sodium lactate-containing powders of Examples 1 to 7 are shown in Table 3.

[0070] [Table 3]

[0071] <Evaluation of solubility> To 100 parts by mass of water, 1 part by mass of each of Examples 1 to 7 and Comparative Example 2 was added. After stirring for 2 minutes, those that were dissolved and the solution became transparent were evaluated as ◯, and those that did not dissolve and precipitated or became cloudy were evaluated as ×. The results of the solubility evaluation are shown in Table 4.

[0072]

Table 4

Claims

1. A base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates; sodium lactate attached or adsorbed to the substrate; A sodium lactate-containing powder comprising:

2. 2. The sodium lactate-containing powder according to claim 1, characterized in that the sodium lactate content is 10 to 95 mass %.

3. 3. The sodium lactate-containing powder according to claim 1 or 2, characterized in that the moisture content is 18.0% by mass or less.

4. 3. The sodium lactate-containing powder according to claim 1 or 2, characterized in that the angle of repose is 30 to 55 degrees.

5. 3. The sodium lactate-containing powder according to claim 1, wherein the organic acid salt is at least one selected from the group consisting of malate, citrate, fumarate and tartrate.

6. 3. The sodium lactate-containing powder according to claim 1 or 2, characterized in that the base material contains at least one selected from the group consisting of sodium malate, trisodium citrate, sodium fumarate, sodium tartrate, sodium carbonate, tripotassium citrate and potassium carbonate.

7. the method includes a powder preparation step of contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates, and then stirring or heating and stirring the resulting mixture, or contacting an aqueous solution containing at least sodium lactate with a base material containing at least one selected from the group consisting of organic acid salts (excluding lactates) and carbonates while stirring or heating and stirring the resulting mixture, to obtain a sodium lactate-containing powder; The moisture content of the substrate is 2.0% by mass or less; A method for producing a sodium lactate-containing powder, comprising the steps of:

8. 8. The method for producing a sodium lactate-containing powder according to claim 7, wherein the organic acid salt and the carbonate are anhydrous.

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