JPH03216179A - Sediment-settling agent for fermented liquid food and sediment-settling method using the same - Google Patents

Abstract

PURPOSE:To provide the subject sediment-settling agent composed of a silica sol consisting of plural silica particle groups having different particle size distributions, exhibiting high sediment-settling speed and capable of shortening the time necessary for sediment-settling. CONSTITUTION:The objective sediment-settling agent is composed of a silica sol consisting of at least two silica colloid particle groups having different particle size distributions satisfying at least one of the formulas D2-n>=1.3D1 wherein D1 is the peak value of the particle size distribution of a silica particle group having the smallest particle size distribution and D2, D3...Dn are peak values of respective particle size distributions of the other one or more kinds of silica colloid particle diameters having larger particle size distributions.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a sludge-reducing agent for liquid foods and a sludge-reducing method using the same. This invention relates to an agent for removing slag from fermented liquid foods and a method for removing sludge from fermented liquid foods using the same.

[Prior art]

Conventionally, silica sol has been used as a sludge-removal agent for liquid foods that cause protein clouding, such as sake, grape wine, beer, other brewed liquors, and soybean oil.
33351, Japanese Patent Publication No. 60-6187), various methods have been proposed to shorten the time required for lowering the slag (
JP-A No. 60-27376, etc.).

However, conventional sludge-reducing agents are not necessarily satisfactory in terms of sludge-reducing speed.

[Purpose of the invention]

An object of the present invention is to provide a dregs removing agent that can be used to remove dregs from liquid foods that cause protein turbidity and which can be used to remove dregs quickly.

Another object of the present invention is to provide an improved method for reducing the time required for lowering the slag.

[Summary of the invention]

The present invention relates to a slag remover made of silica sol, wherein the silica sol is made of silica colloid particle groups having at least two different particle size distributions, and the silica colloid particle group having the smallest particle size distribution has a peak particle size distribution. value D
D. D2 is the peak value of each particle size distribution of one or more types of silica colloid particle groups with other large particle size distributions.
, D...Dn, then D2≧1.3D, D≧1.3 D1 Dn≧1.3 D1 Fermentation characterized by satisfying at least one or more of the following relational expressions. Concerning a slag remover for liquid foods. In particular, it is preferable that D1 is in the range of 3 nm≦D1≦30 nm.

Another aspect of the present invention relates to a method for removing slag from a fermented liquid food, which comprises adding the sludge-reducing agent according to claim 1 to the fermented liquid food, and performing coagulation and sedimentation separation of protein-turbid substances. [Detailed Description of the Invention] The silica sol, which is a slag-reducing agent for fermented liquid foods according to the present invention, is composed of a group of silica colloid particles having at least two different particle size distributions.

Such a silica sol consisting of a group of silica colloid particles having at least two different particle size distributions typically exhibits a particle size distribution of the silica colloid particles having at least two peaks. In addition, there are special cases in which the Siri force sol shows almost no multiple peaks and a distribution that is very broad and deviates greatly from the normal normal distribution, such as particles with a shoulder as shown in Figure 4. It may be a diameter distribution.

In the silica sol of the present invention, the peak value of the particle size distribution of the silica colloid particle group with the smallest particle size distribution is D, and the peak value of the particle size distribution of the silica colloid particle group with the other large particle size distribution is D. The peak value of the particle size distribution is D2,
When D,...Dn, D2≧1.3 D1 D,≧1.3D? , , ≧1.3 D■ It is characterized by satisfying at least one or more of the relational expressions.

In order to specifically explain the silica sol of the present invention, a schematic diagram of a silica sol consisting of three groups of silica colloid particles each having a different particle size distribution is shown in FIG. 1 as an example. ? As shown in Figure 1, in this example, the three silica colloid groups with different particle size distributions each have three corresponding peaks, and the particle size distribution of the silica colloid particle group with the smallest particle size distribution. The peak is the peak value D■ of the particle size distribution corresponding to peak (1),
In addition, the peaks of the particle size distribution corresponding to the other two types of silica colloid particle groups having large particle size distributions correspond to the peak value D2 and peak (3) of the particle size distribution corresponding to peak (2), respectively. It is indicated as the peak value D of the particle size distribution.

In the silica sol as a sludge-reducing agent for fermented liquid foods according to the present invention, it is necessary to satisfy at least one of the following relationships: D2≧1.3 D1 or D3≧1.3 D. However, the relationship between D2 and D3 is not limited.

In the silica sol of the slag remover according to the present invention, the peak value D2 of the distribution of silica colloid particles having a large particle size distribution
, D3...Dn is 1.3D. If it is smaller than
Since the peaks of the particle size distribution of each silica colloidal particle group are close to each other, the slag-reducing effect is unchanged when used as a slag-reducing agent compared to the case of a silica sol consisting of a single silica colloidal particle group. The silica sol preferably has D2≧1.7D, D≧1.7D1? It is desirable that at least one of the relational expressions n≧1.7D■ be satisfied.

Further, in the silica sol of the slag remover according to the present invention, it is preferable that the peak value D of the particle size distribution of the silica colloid particles having a small particle size distribution is in the range of 3 nm≦D1≦3On+a. If the peak value D of the particle size distribution of the silica colloid particle group having the smallest particle size distribution is larger than 3On+m, it is undesirable and , Average grain? If the diameter D is smaller than 3 nm, it is not desirable because the silica sol is unstable. In addition,
The peak values D2, D, . . . Dn of the particle size distribution of other silica colloid particle groups having large particle size distribution peak values are not limited, but are preferably 100 nm or less.

Generally, commercially available silica sol has a particle size in the range of 30 to 300 nanometers, and its particle size distribution exhibits a distribution close to a normal distribution with one peak. Therefore, a silica sol in which silica colloidal particles have particle groups with at least two different particle size distributions can be obtained by mixing two or more types of silica sols with different particle size distributions, or by controlling the growth of silica colloidal particles by a special method. It can only be adjusted by doing so.

In the silica sol of the slag remover according to the present invention, it is preferable that the proportion of the silica colloid particles having the smallest particle size distribution in the total silica sol is 10 to 90 wt%, preferably 30 to 70 wt% as Sin. . In the present invention, when expressing the amount of silica colloidal particles, the particle size corresponding to the valley of the particle size distribution (for example, the first
In the figure, each group of silica colloid particles is separated by d1 and d2.

The silica sol of the sludge removing agent according to the present invention is composed of silica colloid particles having at least two different particle size distributions. , has a strong effect of aggregating protein-turbid substances in fermented liquid foods, and silica colloid particles with a large particle size distribution have the effect of further aggregating protein-turbid substances that have been aggregated by silica colloid particles with a small particle size distribution. It is assumed that the slag is lowered at a faster rate because the slag is strong and large aggregates of protein-turbid substances are formed in a short period of time.

In addition, the silica sol of the slag remover according to the present invention can be a silica sol using water and/or ethyl alcohol as a dispersion medium, and has a Sin2 concentration of 10 to 40 wt%.
Preferably.

The dregs removing agent of the present invention is suitable for use in removing dregs from alcoholic beverages such as sake, mirin, beer, and wine, and liquid foods that cause protein clouding, such as soy sauce and vinegar.

In the method of the present invention, when the sludge-reducing agent is added to the liquid food as described above and stirred, the protein-turbid substances in the liquid food immediately coagulate and settle. The amount of the sludge-reducing agent added to liquid foods varies depending on the amount of protein clouding substances, but in the case of sake,
Usually 200-200 as 30wt%S i 02 sol
0 ppm layer, preferably about 400 to 1000 ppm.

In the method of the present invention, in addition to the sludge-reducing agent, a flocculant to aid the growth of aggregates, such as proteins such as gelatin or soluble polymer substances such as polyvinylpyrrolidone, is added to facilitate flocculation, as in the conventional case. It is also possible to further enhance the effect.

〔Example〕

Examples are shown below to further specifically illustrate the present invention. In addition, in the following examples, each peak value coincides with the average particle diameter. As long as the average particle diameters of each particle group are separated by 5 μm or more, there is no problem in considering that each peak value substantially matches the average particle diameter.

Example-1 30 silica colloid particles with an average particle diameter of 10 nm
% Silica sol (Cataloid-S manufactured by Catalysts & Chemicals Co., Ltd.)
I-30) 50g of 30% silica sol (Catalyst Chemical Industry Co., Ltd.) in which the average particle diameter of silica colloidal particles is 37 nm.
A silica sol for slag removal having a particle size distribution of silica colloid particles as shown in FIG. The particle size distribution of the silica colloid particles of the silica sol was measured using a laser Doppler method particle size distribution measuring device. The particle size distribution of the silica colloid particles of this silica sol for slag removal showed two peaks, the minimum peak value (D1) was 10 nm, and the other peak value (D3) was 37 nm.

Using this silica sol under the following conditions? I did a test.

5001IQ of raw sake was collected in an IQ beaker with a stirrer, and while stirring, 0.75g of activated carbon was added.
After a few minutes, 0.3+sl2 of the above-mentioned silica sol was added and stirred for 5 minutes. Then, after adding 1.5 mM of 1% gelatin aqueous solution, stirring was continued for 10 minutes.

Thereafter, the stirrer was stopped and changes in turbidity over time were measured using a corona turbidity meter. The results are shown in Table 1.

Example-2 30% silica sol of Example-1 [Catalysts & Chemicals Co., Ltd. I
Using 30% silica sol with an average particle size of 25n [I Catalyst Kasei Kogyo Co., Ltd. I Cataloid-SI-50] instead of A silica sol showing peaks was prepared. The peak value (n ■) of the minimum particle size distribution group is 10n
m, and the other peak value (D2) was 25 nm. Using this silica sol, a slag removal test was conducted in the same manner as in Example-1. The results are shown in Table-1.

? M-3 30% silica sol of Example-1 [Catalysts & Chemicals Co., Ltd. m
1 force talloid-S I-45P, average particle size 37nm)
Instead, a 30% silica sol with an average particle diameter of 17 nm (H-Riki Taloid-SI-40, manufactured by Catalysts & Chemicals Co., Ltd.) was used to prepare a silica sol whose particle size distribution showed two peaks.

The minimum peak value (D■) corresponding to the peak of the particle size distribution of silica colloidal particles is 10 nm, and the other peak value (D2
) was a 17n coat. Using this silica sol, a slag removal test was conducted in the same manner as in Example-1. The results are shown in Table-1.

Example-4 20% of silica colloid particles whose average particle diameter is 5n
Silica sol [Catalyst Chemical Industry Co., Ltd. Ilki Taloid-S
I-550) 30g & 30% silica sol with an average particle size of silica colloid particles of 10 nm [Catalyst Kasei Kogyo Co., Ltd. Cataloid-S I-30) 50g and 30% silica sol with an average particle size of silica colloid particles of 25 nm [ Catalyst Chemical Industry Co., Ltd. Catalog? T-s I-
50) A silica sol having three peaks in the particle size distribution of silica colloidal particles was prepared by mixing 50 g. The minimum peak value (De) of the particle size distribution of silica colloidal particles is 5 nm, the other peak value (D2) is 10 nm, and D, is 2
It was 5 nm.

Using this silica sol, a slag removal test was conducted in the same manner as in Example-1. The results are shown in Table-1.

Example-5 30 silica colloid particles with an average particle diameter of 25 nm
% Silica sol [Cataloid-S manufactured by Catalysts & Chemicals Co., Ltd.
I-50) 30% silica sol with 50 g and silica colloid particles having an average particle size of 45 nm [Catalysts Kasei Kogyo Co., Ltd.]
Cataloid-S I-45P) 25g and mixed with
A silica sol consisting of silica colloid particles with two different particle size distributions was prepared. The small peak value (D■) of silica colloidal particles is 25n■, and the large peak value (D■) is 25n■.
D2) was 45 nm. Using this silica sol, a slag removal test was conducted in the same manner as in Example-1. Table 1 shows the results.
It is shown in Example 6 Using the silica sol for removing slag from Example 2, a vinegar removal test was conducted under the following conditions.

The raw vinegar was collected at 500o+12 in an IQ beaker with a stirrer, and while stirring, the above silica sol was added at 1.5
i12 was added and stirred for 5 minutes. Next, 15 mQ of a 5% aqueous gelatin solution was added, and stirring was continued for 10 minutes.

Thereafter, the stirrer was stopped and changes in turbidity over time were measured. The results are shown in Table 1. Example 7 Using the silica sol of Example 2, a soy sauce dripping test was conducted under the following conditions. 500++Q of pasteurized soy sauce was collected in an IQ beaker equipped with a stirrer, and while stirring, 0.6+R of the above-mentioned silica sol was added and stirred for 5 minutes. Then, after adding 3 ml2 of a 1% aqueous gelatin solution, stirring was continued for 10 minutes. After that, the stirrer was stopped and the change in turbidity due to the elapsed time was measured with 10% NaCR aqueous solution.
It was diluted 0 times and measured.

? Example 8 Using the silica sol of Example 2, a wine drop test was conducted under the following conditions. 500 m Q of raw wine was collected in an IQ beaker with a stirrer, and while stirring, 0.08 g of bentonite was added, and after stirring for 5 minutes, the above-mentioned silica sol 0.1 mΩ was added, and then 1%
After adding 0.3 mQ of gelatin aqueous solution, stirring was continued for 10 minutes. Thereafter, the stirrer was stopped and changes in turbidity over time were measured.

Comparative Example-1 30 whose average particle diameter of silica colloid particles is 10 nm
% Silica Sol [Catalyst Chemical Industry Co., Ltd. Cataloid-SI-
A sake lowering test was conducted using No. 303 under the following conditions.

This silica sol had a particle size distribution of colloidal silica particles as shown in FIG. 3, and the particle size distribution had one peak, and the peak value (D■) was 10 nm.

500 m of raw sake was collected in a 1ρ beaker with a stirrer, and while stirring, 0.75 g of activated carbon was added.
After 5 minutes, add 0.3raQ of the above silica sol,
Stir for a minute. Next, 1.5 mQ of a 1% aqueous gelatin solution was added, and stirring was continued for 10 minutes. Thereafter, the stirrer was stopped and changes in turbidity over time were measured using a corona turbidity meter. The results are shown in Table-1.

Comparative Example-2 In Comparative Example-1, a 30% silica sol [Catalyst Chemical Industry Co., Ltd. Cataloid-SI-5] with a particle size distribution showing a single peak at an average particle size of 25 nm was used.
A hanging test was carried out in exactly the same manner as in Comparative Example 1, except that 0] was used.

The results are shown in Table-1.

Comparative Example-3 In Example-6, a 30% silica sol [Catalyst Chemical Industry Co., Ltd. Cataloid-SI-50] with a particle size distribution showing a single peak at an average particle size of 25 nm was used.
) was used, but the same procedure as in Example 16 was carried out to carry out the hanging test. The results are shown in Table-1.

Comparative Example-4 In Example-7, a 30% silica sol [Catalyst Chemical Industry Co., Ltd. Cataloid-SI-50] with a particle size distribution showing a single peak at an average particle size of 25 nm was used.
) was used, but the same procedure as in Example 7 was carried out to carry out the hanging test.

The results are shown in Table-1.

(The following is a blank space) [Effects] As is clear from the results of the slag removal test shown in Table 1, the slag remover of the present invention is a slag remover consisting of a silica sol in which the particle size distribution of silica colloid particles exhibits a single peak. than the agent,
The slag lowering speed is fast, so the time required for slag lowering can be shortened.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of a silica sol consisting of three groups of silica colloid particles with different particle size distributions, and Figure 2 is the particle size distribution of the silica sol slag remover obtained in Example 1.
FIG. 3 shows the particle size distribution of the silica sol obtained in Comparative Example 1. Figure 4 shows the particle size distribution of silica sol in a special case.

Claims (1)

[Scope of Claims] 1. A sludge-reducing agent comprising silica sol, wherein the silica sol is comprised of silica colloid particle groups having at least two different particle size distributions, and particles of the silica colloid particle group having the smallest particle size distribution. The peak value of the diameter distribution is D_1,
The peak value of each particle size distribution of one or more types of silica colloid particle groups having other large particle size distributions is D_2,
A sludge-reducing agent for fermented liquid foods, which satisfies at least one of the following relational expressions, where D_3...D_n: D_2≧1.3D_1 D_3≧1.3D_1 D_n≧1.3D_1 . 2. A slag-reducing agent for fermented liquid foods, characterized in that D_1 according to claim 1 is in the range of 3 nm≦D_1≦30 nm. 3. Adding the slag-reducing agent according to claim 1 to the fermented liquid food,
A method for removing slag from fermented liquid foods, which comprises performing flocculation and sedimentation separation of protein-turbid substances.