JP2002223736A - Dispersing agent for calcium-fortified drink, and calcium- containing powder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dispersing agent for calcium-fortified drink, capable of keeping for a long period a dispersion state of slurry composed of calcium, water and a dispersing agent. SOLUTION: This dispersing agent contains as the active ingredient (A) carboxymethylcellulose sodium and together with the (A) ingredient, preferably contains as the active ingredient (B) at least one kind selected from the group consisting of sucrose fatty acid ester, polyglyceryl fatty acid ester, sodium caseinate, soybean polysaccharides and starch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a dispersant for a calcium-enriched beverage (hereinafter, also simply referred to as "dispersant").
More specifically, for example, a dispersant for improving the dispersion stability of calcium in a liquid when producing a calcium-enriched beverage (a beverage in which calcium is enriched (increased in volume)) by further adding calcium to a beverage such as milk. It is about.

[0002]

2. Description of the Related Art Insufficient calcium intake has recently been regarded as a cause of increased osteoporosis in the elderly and increased fractures in young people. To overcome this, calcium-fortified foods have been sold.

[0003] For example, calcium fortifying agents to be added to milk include water-soluble organic acid calcium such as calcium lactate and calcium gluconate, and water-insoluble calcium such as calcium carbonate and calcium phosphate. Due to the stability of the protein inside, it is better to use water-insoluble calcium such as calcium carbonate, and applications are increasing.

However, since calcium carbonate has a high specific gravity, it precipitates in a liquid in a short time, that is, there is a problem in suspension stability, and it is difficult to maintain a stable state after adding calcium to a beverage. There was a problem.

As a method for solving this problem, Japanese Patent Application Laid-Open
Japanese Patent Application Publication No. 319817 proposes a method of adding a hydrophilic emulsifier having an HLB of 10 or more, such as a sucrose fatty acid ester. Also, Japanese Patent Application Laid-Open No. Hei 7-111879 proposes a method in which sucrose fatty acid ester is added to slurry calcium carbonate and pulverized to obtain a slurry having a specific particle size and a geometric standard deviation.

However, in the method using sucrose fatty acid ester alone as a dispersant, the effect of stably maintaining the dispersion state of a calcium dispersion slurry comprising calcium, water and a dispersant for a long period of time is not sufficient. Further improvement is desired.

[Object of the Invention] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dispersant capable of maintaining the dispersion state of a calcium dispersion slurry for a long period of time.

[0008] Another object of the present invention is to provide a calcium-containing powder which is obtained by dry-pulverizing such a calcium-dispersed slurry and which has excellent preservability and transportability.

[0009]

Means for Solving the Problems The calcium-enriched beverage dispersant of the present invention which solves the above problems contains (A) a carboxymethylcellulose salt as an active ingredient.

[0010] The dispersant for a calcium-enriched beverage of the present invention is selected from the group consisting of (B) sucrose fatty acid ester, polyglycerin fatty acid ester, sodium caseinate, soybean polysaccharide and starch, together with the component (A). It is preferable to contain at least one kind as an active ingredient.

The calcium-containing powder of the present invention is obtained by dry-pulverizing a calcium dispersion slurry containing the dispersant of the present invention, calcium and water.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION [Calcium-enriched beverage] The term "calcium-enriched beverage" as used in the present invention refers to a beverage containing calcium originally, such as milk or yogurt, containing calcium in the form of organic acid calcium or inorganic salt. In addition to what was added, whether it originally contains no calcium,
Alternatively, a beverage containing calcium added to a very small number of beverages (soft drinks, fruit drinks, etc.) is also included.

[0013] Since calcium carbonate is a typical calcium source, the following description will be made assuming that the calcium carbonate is used. However, the present invention is not limited to this. For example, other than calcium carbonate, calcium phosphate can be used. is there.

Examples of the method of obtaining the calcium carbonate slurry added in the present invention include a method in which carbon dioxide gas is passed through a suspension of slaked lime, washing and purification of eggshells, coral or shells, and calcination or as it is. Examples thereof include a method of forming a slurry by wet pulverization, but the method is not limited thereto.

[Carboxymethylcellulose salt (A)]
By using the carboxymethylcellulose salt of the component (A) as a dispersant, the viscosity of the calcium-dispersed slurry can be reduced and the average particle size can be reduced, and the long-term dispersion stability of the slurry can be enhanced.

As the carboxymethylcellulose salt,
The use of a sodium salt is preferred, and those having relatively low viscosity in the form of an aqueous solution, for example,
Those having mPa · s or less are preferred. When a high-viscosity slurry is used at a high concentration, the viscosity of the calcium carbonate-dispersed slurry itself increases significantly, and there is a possibility that a problem may occur that the workability when adding the slurry to the beverage is deteriorated.

[Sucrose fatty acid ester, polyglycerin fatty acid ester, sodium caseinate, soybean polysaccharide, starch (B)] The fatty acid in the sucrose fatty acid ester and polyglycerin fatty acid ester is preferably a saturated or unsaturated fatty acid having 16 to 22 carbon atoms. It is a saturated fatty acid, and specific examples thereof include saturated fatty acids such as palmitic acid, stearic acid, arachidic acid, and docosanoic acid, and unsaturated fatty acids such as oleic acid, linoleic acid, linoleic acid, erucic acid, and arachidonic acid. However, the present invention is not limited to these.

The sucrose fatty acid ester containing these fatty acids as constituents is used as a hydrophilic emulsifier for effectively dispersing calcium carbonate in a slurry in an aqueous system, and contains HLB11 (monoester content of 50%). The above are preferred.

Polyglycerin fatty acid esters have a similar function, and HLB is preferably used.
Is 5 or more or the average degree of polymerization is 3 or more.

Sodium caseinate is a sodium salt of casein which is a protein present in milk and legumes, and is added not only as sodium caseinate but also as casein and sodium hydroxide so as to generate sodium caseinate in the system. A mixture prepared by mixing with an alkali is also included.

The soybean polysaccharide is a water-soluble polysaccharide extracted and purified from soybean, and has galactose, arabinose and galacturonic acid as main constituent sugars.

Examples of the starch include those used for food and those recognized as food additives. Specifically, wheat, corn, waxy corn, potato, tapioca and other natural starch as a raw material, α-starch, heat-moisture treated starch, starch esters, such as modified starch physically or chemically modified properties. No.

[Blending Ratio] The blending ratio of the above-mentioned components (A) and (B) is 0.1: 9 by weight (A) :( B).
The ratio is preferably 9 to 10: 0.

The effect of using the component (B) together appears when the weight ratio of the component (B) is 0.1 or more (that is, (A) :( B) = 0.1: 9. 9-9.9: 0.
1).

[Preparation of Dispersant, etc.] The dispersant of the present invention can be obtained by blending the above-mentioned component (A) alone or the components (A) and (B) and then mixing them uniformly. Further, this dispersant was added to tap water, heated and dissolved at 70 ° C., cooled to 25 ° C. to prepare a dispersant aqueous solution, and then added to slurry calcium carbonate, and then dispersed in a homogenizer or other dispersing apparatus. To obtain a calcium carbonate-dispersed slurry.

The proportion (% by weight) of each component in the calcium carbonate dispersion slurry to which the dispersant of the present invention is added is as follows:
aCO ₃ : dispersant: water = 1 to 50%: 0.01 to 10
%: 40 to 99.99% (however, 100% in total), preferably 3 to 20%: 0.02 to 5%: 75
More preferably, it is 96.98%.

The amount of the dispersant added to the calcium carbonate is as follows: the dispersant / calcium carbonate = 0.01 in terms of solids weight ratio.
It is desirable to select a value within the range of ~ 6. 0.0
If it is less than 1, there may be a problem that the dispersion stability is reduced. If it is more than 6, there may be a problem that the taste and odor peculiar to the dispersant become remarkable.

The dispersant of the present invention can be mixed with the slurry calcium carbonate by a mixing and stirring tank, a line mixer or the like. Then, this mixture is pulverized to prepare a slurry in which the average particle size of the calcium carbonate particles is 1.0 μm or less. If the average particle size exceeds 1.0 μm, there is a possibility that a problem that dispersion stability is reduced may occur. In addition, grinding is performed by a roll mill, a ball mill, a co-ball mill,
It can be performed using a known pulverizer such as a bead mill.

The calcium-dispersed slurry thus obtained may be dried and powdered to prepare a calcium-containing powder. By making the calcium-dispersed slurry into a dry powder, not only is it possible to avoid decay of the slurry during long-term storage, but also distribution costs such as filling container costs, refrigeration equipment costs, refrigeration costs, and transportation costs when transporting to various destinations. Can be reduced.

The dryer used for drying the calcium dispersion slurry is not particularly limited, and a known method can be used. However, a dryer which can be dried in a very short time so as not to adversely affect the quality of various additives is desirable. . From this viewpoint, it is desirable to use a droplet spray type drier such as a spray drier or a slurry drier, and it is also possible to use a technique such as freeze drying.

In powdering the calcium dispersion slurry, a film forming agent such as a saccharide compound may be used in combination. Examples of the film-forming agent include monosaccharides such as fructose and glucose, disaccharides such as sucrose and lactose, polysaccharides such as dextrin, and sugar alcohols such as sorbitol. One of these may be used alone or 2
Species or more may be mixed.

The calcium-dispersed slurry or calcium-containing powder prepared as described above can be added to a beverage or water to disperse to obtain a calcium-enriched beverage. This calcium dispersion slurry has very good dispersibility in water, and the calcium-containing powder also has very good redispersibility in water. Therefore, both can be easily dispersed in a beverage or water using a commonly used stirring and mixing tank without using a special dispersing machine or a stirrer.

Examples of drinks to which the calcium-dispersed slurry or the calcium-containing powder are added include milk, processed milk, reduced milk, milk drinks, soft drinks, fruit drinks, and the like, as described above.

The amount of slurry added is desirably selected so that the amount of increase in calcium per 100 g of beverage is 100 to 500 mg. The content of the dispersant in the calcium-fortified beverage is usually 0.00002 to 2% by weight, and preferably 0.00005 to 1% by weight. 0.0000
When the amount is less than 2% by weight, there is a possibility that a problem that the dispersion stability is reduced may occur. is there.

The calcium-fortified beverage obtained as described above may be subjected to removal of foreign substances using a clarifier or the like, or may be subjected to a sterilization treatment at high temperature and high pressure.

In order to suppress the viscosity of the dispersion slurry,
An ionic emulsifier such as succinic monoglyceride, citric acid monoglyceride, and lecithin can be used in combination, or an emulsifier such as monoglyceride and sorbitan fatty acid ester can be used in combination.

[0037]

EXAMPLES Hereinafter, the present invention will be described specifically with reference to examples, but the scope of the present invention is not limited to these examples.

Example 1 As a dispersant for a calcium-enriched beverage, sodium carboxymethylcellulose (hereinafter referred to as “dispersant”) was used.
Simply referred to as "CMC") and added to the tap water,
The mixture was dispersed at room temperature and completely dissolved to prepare an aqueous dispersant solution.

To the slurry calcium carbonate having an average particle diameter of 0.3 μm or less, the above-mentioned aqueous solution of dispersant and water were added, and the calcium carbonate solid content concentration / dispersant concentration = 15.0% /
After adjusting to 0.7%, dispersion treatment was performed using an ultrasonic homogenizer (US-600T, maximum output 600 W, manufactured by Nippon Seiki Co., Ltd.).

Example 2 CMC and a sucrose fatty acid ester of HLB15 (monoester content 70%) (hereinafter simply referred to as “SE”) were blended at a ratio of CMC: SE = 10: 90 (weight ratio). The mixture was uniformly mixed to prepare a calcium-enriched beverage dispersant. This dispersant was added to tap water, dispersed at room temperature, heated and stirred to 70 ° C., completely dissolved, and then dissolved at 25 ° C.
And cooled to prepare an aqueous dispersant solution.

To the slurry calcium carbonate having an average particle diameter of 0.3 μm or less, the above-mentioned aqueous solution of dispersant and water were added, and the calcium carbonate solid content concentration / dispersant concentration = 10.0% /
After adjusting to 1.5%, TK homomixer (10000)
(rpm × 10 minutes).

Example 3 CMC and starch (waxy starch) were blended in a ratio of CMC: starch = 25: 75 (weight ratio) and uniformly mixed to prepare a calcium-fortified beverage dispersant. This dispersant was added to tap water, dispersed at room temperature, heated and stirred at 70 ° C., completely dissolved, and then cooled to 25 ° C. to prepare an aqueous dispersant solution.

To the slurry calcium carbonate having an average particle size of 0.3 μm or less, the above-mentioned aqueous solution of dispersant and water were added, and the calcium carbonate solid content concentration / dispersant concentration = 10.0% /
After adjusting to 1.0%, a pressure type homogenizer (25M
(Pa / 5 MPa).

Example 4 CMC and sodium caseinate were blended at a ratio of 25:75 (weight ratio) of CMC: sodium caseinate and uniformly mixed to prepare a calcium-enriched beverage dispersant. This dispersant was added to tap water, dispersed at room temperature, heated and stirred at 70 ° C., completely dissolved, and then cooled to 25 ° C. to prepare an aqueous dispersant solution.

To the slurry calcium carbonate having an average particle diameter of 0.3 μm, the above-mentioned aqueous solution of the dispersant and water were added, and the calcium carbonate solid content concentration / the dispersant concentration = 12.0% / 1.1.
%, And then adjusted to TK homomixer (10000 rpm).
× 10 minutes).

Example 5 CMC and a polyglycerol fatty acid ester of HLB13 (average degree of polymerization: 5) were prepared using CMC:
Polyglycerin fatty acid ester = 75: 25 (weight ratio)
And uniformly mixed to prepare a calcium-enriched beverage dispersant. After adding this dispersant to tap water and dispersing at room temperature,
The mixture was heated and stirred at 70 ° C., completely dissolved, and then cooled to 25 ° C. to prepare a dispersant aqueous solution.

The above aqueous solution of dispersant and water are added to slurry calcium carbonate having an average particle size of 0.3 μm, and the calcium carbonate solid content concentration / dispersant concentration = 10.0% / 1.6.
%, And then the ultrasonic homogenizer (Nippon Seiki Co., Ltd.)
(US-600T, maximum output 600W).

Example 6 CMC and soybean polysaccharide were converted to CM
C: soybean polysaccharide = 50: 50 (weight ratio), and mixed uniformly to prepare a calcium-enriched beverage dispersant. This dispersant is added to tap water, dispersed at room temperature and completely dissolved,
An aqueous dispersant solution was prepared.

To the slurry calcium carbonate having an average particle size of 0.3 μm, the above aqueous solution of dispersant and water were added, and the calcium carbonate solid content concentration / dispersant concentration = 12.5% / 0.6
%, And then the ultrasonic homogenizer (Nippon Seiki Co., Ltd.)
(US-600T, maximum output 600W).

Example 7 CMC was used as a dispersant for a calcium-enriched beverage, added to tap water, dispersed at room temperature and completely dissolved to prepare an aqueous dispersant solution.

The aqueous dispersant solution has an average particle diameter of 0.3 μm.
The following calcium carbonate was added to adjust the calcium carbonate solid content concentration / dispersant concentration to 50.0% / 0.5%, and then an ultrasonic homogenizer (US-6, manufactured by Nippon Seiki Co., Ltd.)
(00T, maximum output 600 W).

[Comparative Example 1] A sucrose fatty acid ester of HLB15 (monoester content 70%) was used as a dispersant for a calcium-enriched beverage, added to tap water, dispersed at room temperature, and heated and stirred to 70 ° C. After dissolution, the mixture was cooled to 25 ° C. to prepare a dispersant aqueous solution.

To the slurry calcium carbonate having an average particle diameter of 0.3 μm or less, the above dispersant aqueous solution and water were added, and the calcium carbonate solid content concentration / dispersant concentration = 10.0% /
After adjusting to 2.5%, TK homomixer (10000)
(rpm × 10 minutes).

Table 1 shows the dispersant formulation, calcium carbonate concentration / dispersant concentration, and treatment method (dispersion method) of Examples 1 to 7 and Comparative Example 1 described above.

[0055]

[Table 1]

The calcium carbonate dispersion slurries prepared in Examples 1 to 7 and Comparative Example 1 were stored at 5 ° C.
The state of separation after weeks, two weeks, and three weeks was observed, and the particle size distribution (average particle diameter) and viscosity were measured. Table 2 shows the results.

Here, the separation status was evaluated as “○” when almost no separation was observed, “△” when slight water separation was observed, and “X” when water separation was observed.

The particle size distribution was measured using a laser diffraction particle size distribution analyzer SALD-2000 manufactured by Shimadzu Corporation by diluting the dispersion so that the absorbance became 0.050 ± 0.003.

The viscosity was measured using a B-type viscometer (Rotor No. 1, 60 rpm × 60 seconds) manufactured by Tokyo Keiki Seisakusho.

[0060]

[Table 2]

Example 8, Comparative Example 2 The calcium-dispersed slurry obtained in Example 1, skim milk powder, hot water and butter were added (non-fat milk solid content: 8.0%, milk fat content: 3.0). %,
(Calcium carbonate: adjusted to 0.75%), dissolved, and then homogenized and sterilized by UHT to obtain a calcium-enriched processed milk of Example 8. Further, the calcium-dispersed slurry obtained in Comparative Example 1 was used to obtain a calcium-reinforced processed milk of Comparative Example 2 in the same manner.

After sterilization, several 100 ml cylindrical tubes
It was stored at 5 ° C., the milk in the cylindrical tube was discarded gently, and the daily change in the amount of sediment remaining at the bottom (4 days, 1 week, 2 weeks, 3 weeks) was visually observed. The evaluation was evaluated as “○” when little precipitation was observed, “△” when slight precipitation was observed, and “×” when precipitation was observed.

Example 9 and Comparative Example 3 The calcium-dispersed slurry obtained in Example 1 and Comparative Example 1 was dried and powdered with a spray drier, and then dried in the same manner as in Example 8 and Comparative Example 2. Calcium-enriched processed milks of Example 9 and Comparative Example 3 were prepared and evaluated.

Table 3 shows the results.

[0065]

[Table 3]

[0066]

EFFECT OF THE INVENTION By using the dispersant for calcium-enriched beverage of the present invention, low viscosity, fine average particle diameter, separation / precipitation occurs even when the calcium dispersion slurry is allowed to stand under ordinary refrigeration conditions. No long-term dispersion stability is obtained, and even if separation or precipitation occurs, it can be easily redispersed. Therefore, according to the present invention, the dispersion state of the slurry can be stably maintained for a long period of time.

When the calcium-containing powder of the present invention is obtained by drying and powdering this calcium-dispersed slurry, it is possible not only to avoid decay of the slurry during long-term storage, but also to reduce the cost of a filling container when transporting it to various uses. Distribution costs such as refrigeration equipment costs, refrigeration costs, and transportation costs can be reduced.

Claims (5)

[Claims] 1. A dispersant for a calcium-enriched beverage comprising (A) a carboxymethylcellulose salt as an active ingredient. 2. An active ingredient comprising (A) a carboxymethylcellulose salt and (B) one or more selected from the group consisting of sucrose fatty acid esters, polyglycerin fatty acid esters, sodium caseinate, soybean polysaccharides and starch. Calcium fortified beverage dispersant. 3. The dispersant according to claim 2, wherein the monoester content of the sucrose fatty acid ester is 50% or more. 4. The method according to claim 1, wherein the polyglycerin fatty acid ester is H
The calcium-enriched beverage dispersant according to claim 2, having an LB of 5 or more or an average degree of polymerization of 3 or more. 5. A calcium-containing powder obtained by drying and powdering a calcium dispersion slurry containing the dispersant according to any one of claims 1 to 4, calcium and water.