JP2004159509A - Dispersant for calcium-fortified drink, and calcium-dispersed slurry and calcium-fortified drink each using the dispersant - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a dispersant for calcium-fortified drink, capable of long maintaining a state where slurry comprising calcium, water and the dispersant is dispersed; and to provide calcium-dispersed slurry and calcium-fortified drink each using the dispersant. <P>SOLUTION: The dispersant for calcium-fortified drink is obtained by formulating a carboxymethylcellulose having a 2 wt.% aqueous solution viscosity of 1,000-5,000 mPa.s at 25°C and an etherification degree of 0.3-0.7 with a carboxymethylcellulose having a 2 wt.% aqueous solution viscosity of 0.5-10 mPa.s at 25°C and an etherification degree of 0.6-1.0, at a weight ratio of (50-90) : (50-10); and contains a carboxymethylcellulose having a 2 wt.% aqueous solution viscosity of 500-1,000 mPa.s at 25°C and an etherification degree of 0.5-0.8. <P>COPYRIGHT: (C)2004,JPO

Description

【００４３】
【発明の効果】
本発明のカルシウム強化飲料用分散剤によれば、特定の２種のＣＭＣを併用したことにより、通常の冷蔵条件で静置しておいても、微細な平均粒子径、低粘度が維持され、分離・沈殿が生じないといった分散安定性の長期持続性が従来よりさらに向上したカルシウム分散スラリーが得られる。
【００４４】
上記分散剤を用いたカルシウム強化飲料は、カルシウムの分散安定性がより向上し、保存性に優れたものとなる。[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a dispersant for calcium-enriched beverage (hereinafter, also simply referred to as “dispersant”) containing carboxymethylcellulose (hereinafter, also referred to as “CMC”), and specifically, for example, a beverage such as milk. A calcium-enriched beverage (a beverage in which calcium is fortified (increased in volume)) by further adding calcium to a dispersant for improving the dispersion stability of calcium in a liquid, a calcium dispersion slurry using the same, The present invention relates to a calcium-enriched beverage.
[0002]
[Prior Art and Problems to be Solved by the Invention]
In recent years, insufficient calcium intake has been regarded as a cause of increased osteoporosis in the elderly and more frequent fractures in the young.In order to solve this insufficient calcium intake, calcium-enriched foods will be sold. Became.
[0003]
For example, calcium enhancers 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. It is said that it is better to use water-insoluble calcium such as calcium carbonate because of its stability, and its applications are increasing.
[0004]
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. Was.
[0005]
As a method for solving this problem, Japanese Patent Application Laid-Open No. 5-319817 proposes a method of adding a hydrophilic emulsifier having an HLB of 10 or more, such as a sucrose fatty acid ester. Japanese Patent Application Laid-Open No. 7-111879 proposes a method in which a 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.
[0006]
However, the method of using a sucrose fatty acid ester alone as a dispersant as described above does not have a sufficient effect of stably maintaining the dispersion state of a calcium dispersion slurry comprising calcium, water and a dispersant for a long period of time.
[0007]
On the other hand, JP-A-2002-223736 discloses a calcium-enriched beverage dispersant comprising a carboxymethylcellulose salt and having improved long-term stability of the dispersion state of the slurry compared to conventional ones. . However, it takes about two weeks for the slurry to maintain a completely dispersed state by this dispersant, and thereafter, separation starts to occur. Therefore, a dispersant that further improves the long-term stability of the dispersed state is desired.
[0008]
[Patent Document 1] Japanese Patent Application Laid-Open No. 5-319817
[Patent Document 2] Japanese Patent Application Laid-Open No. 7-111879
[Patent Document 3] Japanese Patent Application Laid-Open No. 2002-223736
[Problems to be solved by 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 calcium-enriched beverage dispersant capable of maintaining the dispersion state of a calcium dispersion slurry for a longer period of time.
[0012]
Another object of the present invention is to provide a calcium-dispersed slurry having excellent preservability and a calcium-enriched beverage obtained by using such a dispersant.
[0013]
[Means for Solving the Problems]
In order to solve the above problems, the calcium-enriched beverage dispersant of the present invention has a 2% by weight aqueous solution at 25 ° C. having a viscosity of 1000 to 5000 mpa · s and a degree of etherification of 0.3 to 0.7. Of carboxymethyl cellulose having a viscosity of 0.5 to 10 mpa · s at 25 ° C. and a degree of etherification of 0.6 to 1.0 at a weight ratio of 50 to 90. : 50 to 10%, and the viscosity of the 2% by weight aqueous solution at 25 ° C. after mixing is 500 to 1000 mpa · s, and the degree of etherification is 0.5 to 0.8. It contains carboxymethylcellulose (claim 1).
[0014]
The calcium dispersion slurry of the present invention comprises 1 to 50% by weight: 0.01 to 10%: 40 to 99.99% by weight of calcium carbonate, the above-mentioned calcium-enriched beverage dispersant of the present invention, and water (provided that: (Total of 100% by weight) (claim 2).
[0015]
The calcium fortified beverage of the present invention is a calcium fortified beverage in which calcium is fortified using the above-mentioned calcium fortified beverage dispersant, wherein the beverage contains 0.00002 to 2% by weight of carboxymethyl cellulose as a dispersant. (Claim 3).
[0016]
The “weight%” and the “weight ratio” in the above indicate the ratio based on the weight of carboxymethylcellulose without water (that is, CMC anhydride), and the same applies hereinafter.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
[Calcium fortified beverage]
The `` calcium-enriched beverage '' as referred to in the present invention includes milk or yogurt or other beverages originally containing calcium, in addition to organic acid calcium or inorganic salt form calcium, and further contains no calcium at all. Alternatively, a beverage containing calcium added to a very small number of beverages (soft drinks, fruit drinks, etc.) is also included.
[0018]
Since calcium carbonate is a typical calcium source, the following description will be made assuming that calcium carbonate is used. However, the present invention is not limited to this, and other than calcium carbonate, for example, calcium phosphate can be used.
[0019]
Examples of the method for obtaining the slurry calcium carbonate to be added in the present invention include, for example, a method of passing carbon dioxide gas through a slaked lime water suspension, washing and purifying eggshells or coral or shells, followed by firing or wet grinding as it is. Examples include a method of forming a slurry, but the method is not limited thereto.
[0020]
[Carboxymethyl cellulose]
As described above, carboxymethyl cellulose used in the present invention has a viscosity of a 2% by weight aqueous solution at 25 ° C. of 1,000 to 5,000 mpa · s, and a degree of etherification of carboxymethyl cellulose of 0.3 to 0.7, A 2% by weight aqueous solution at 25 ° C has a viscosity of 0.5 to 10 mpa · s and a degree of etherification of 0.6 to 1.0 with carboxymethylcellulose having a weight ratio of 50 to 90:50 to 10 The 2% by weight aqueous solution at 25 ° C. after blending has a viscosity of 500 to 1000 mpa · s and a degree of etherification of 0.5 to 0.8. In addition, as carboxymethyl cellulose, for example, a sodium salt can be used, but it is not limited to this.
[0021]
By using such a specific two kinds of CMC in combination, not only can the viscosity of the calcium dispersion slurry be reduced and the average particle diameter be reduced, but also the viscosity of the slurry and the long-term stability of the dispersion state can be improved. Can be improved.
[0022]
[Preparation of dispersant for calcium-fortified beverage]
The dispersant of the present invention can be obtained by blending two types of CMC satisfying the above conditions at a predetermined ratio and mixing them. Further, the obtained dispersant is dissolved in water to prepare a dispersant aqueous solution, then added to the slurry calcium carbonate, and dispersed by a dispersing device such as a homogenizer to obtain a calcium carbonate dispersion slurry. . In order to obtain the aqueous dispersant solution, for example, the dispersant may be added to tap water, heated and dissolved at 70 ° C., and then cooled to 25 ° C.
[0023]
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: CaCO ₃ : dispersant: water = 1 to 50%: 0.01 to 10%: 40 to 98.99% (However, 100% in total), preferably 3 to 20%: 0.02 to 5%: 75 to 96.98%.
[0024]
The amount of the dispersant added to calcium carbonate is desirably selected so that the dispersant / calcium carbonate is in the range of 0.01 to 6 in terms of solid content weight ratio. If it is less than 0.01, there is a possibility that a problem that dispersion stability is reduced may occur. If it is more than 6, there is a possibility that a problem that the taste and smell peculiar to CMC become remarkable occurs.
[0025]
In order to suppress the viscosity of the dispersion slurry, an ionic emulsifier such as succinic acid monoglyceride, citric acid monoglyceride and lecithin may be used in combination, or an emulsifier such as monoglyceride and sorbitan fatty acid ester may be used in combination.
[0026]
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. The pulverization can be performed using a known pulverizer such as a roll mill, a ball mill, a co-ball mill, and a bead mill.
[0027]
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.
[0028]
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 dryer such as a spray drier or a slurry drier, and a technique such as freeze drying can also be used.
[0029]
When 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 two or more thereof may be mixed.
[0030]
The calcium-dispersed slurry and the calcium-containing powder prepared as described above can be added to a beverage or water and dispersed 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 disperser or a stirrer.
[0031]
Examples of the beverage to which the calcium-dispersed slurry or the calcium-containing powder are added include, as described above, milk, processed milk, reduced milk, milk beverage, soft drink, fruit beverage, and the like.
[0032]
The amount of slurry added is desirably selected so that the amount of increase in calcium per 100 g of the 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, as the content of carboxymethylcellulose. When the amount is less than 0.00002% by weight, there is a possibility that a problem that the dispersion stability is lowered may occur. When the amount exceeds 2% by weight, a problem that a smell peculiar to the dispersant is felt and economic disadvantage occurs may occur. There is.
[0033]
The calcium-enriched 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 a high temperature and a high pressure.
[0034]
【Example】
Hereinafter, the present invention will be described specifically with reference to Examples, but the scope of the present invention is not limited thereto.
[0035]
[Example 1]
As carboxymethyl cellulose, carboxymethyl cellulose (CMC A) having a viscosity of 1200 mpa · s at 25 ° C. and a degree of etherification of 0.45 at 25 ° C., and an ether having a viscosity of 3.2 mpa · s at 25 ° C. Carboxymethylcellulose (CMCB) having a chemical degree of 0.75 was blended at a weight ratio of 60/40 to obtain a calcium-enriched beverage dispersant. This was added to tap water, heated to 70 ° C. to completely dissolve, and then cooled to room temperature to prepare an aqueous dispersant solution. This dispersant had a viscosity of 770 mpa · s of a 2% by weight aqueous solution at 25 ° C. and a degree of etherification of 0.57.
[0036]
The above dispersant aqueous solution and water were added to slurry calcium carbonate having an average particle diameter of 0.3 μm or less, and the calcium carbonate solid content concentration / dispersant concentration was adjusted to 15.0% / 0.7%. Dispersion treatment was performed using a sonic homogenizer (US-600T, maximum output 600 W, manufactured by Nippon Seiki Co., Ltd.) to obtain a calcium carbonate dispersion slurry.
[0037]
[Examples 2 to 4, Comparative Examples 1 to 4]
A calcium carbonate-dispersed slurry was obtained in the same manner as in Example 1 except that each of the dispersants consisting of CMC shown in Table 1 was used.
[0038]
The calcium carbonate dispersion slurries prepared in Examples 1 to 4 and Comparative Examples 1 to 4 were stored at 5 ° C., and the particle size distribution (average particle diameter) and viscosity were measured after one week, two weeks, and three weeks. And the state of dispersion was observed. The results are also shown in Table 1.
[0039]
The average particle diameter (μm) 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.
[0040]
The viscosity (mpa · s) was measured using a B-type viscometer (Rotor No. 1, 60 rpm × 60 seconds) manufactured by Tokyo Keiki Seisakusho. The viscosity of carboxymethylcellulose indicates the viscosity of a 2% by weight aqueous solution.
[0041]
The dispersion state was evaluated as “○” when little separation was observed, “△” when slight water separation was observed, and “×” when water separation was observed.
[0042]
[Table 1]

[0043]
【The invention's effect】
According to the calcium-enriched beverage dispersant of the present invention, by using two specific types of CMC in combination, even when allowed to stand under ordinary refrigeration conditions, a fine average particle size, low viscosity is maintained, A calcium dispersion slurry in which the long-term stability of dispersion stability such that separation / precipitation does not occur is further improved as compared with the related art.
[0044]
The calcium-enriched beverage using the above-mentioned dispersant has more improved dispersion stability of calcium and is excellent in storage stability.

Claims (3)

The viscosity of a 2% by weight aqueous solution at 25 ° C. is 1000 to 5000 mpa · s, and the degree of etherification is 0.3 to 0.7 carboxymethylcellulose. 10 mpa · s, and a carboxymethylcellulose having a degree of etherification of 0.6 to 1.0 is blended in a weight ratio of 50 to 90:50 to 10,
A calcium fortified material comprising a carboxymethylcellulose having a viscosity of 500 to 1000 mpa · s at 25 ° C. and a degree of etherification of 0.5 to 0.8 after 25% at 25 ° C. Dispersant for beverages. 1 to 50% by weight: 0.01 to 10%: 40 to 98.9% by weight of calcium carbonate, the calcium-enriched beverage dispersant according to claim 1, and water (100% by weight in total) Calcium dispersed slurry containing at a ratio of A calcium-enriched beverage comprising calcium-enriched beverage using the calcium-enriched beverage dispersant according to claim 1, wherein the beverage contains 0.00002 to 2% by weight of carboxymethylcellulose as a dispersant in the beverage.