JP2748349B2 - Liquid seasoning manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Industrial Application Field The present invention combines cross-flow filtration with filtration material filtration using a filter aid such as diatomaceous earth or cellulose to change the taste components even after filtration. The present invention relates to a method for producing a liquid seasoning that does not use it.

(2) Prior Art As means for filtering liquid seasonings such as soy sauce, soup, bonito extract, and the like, filtration means filtration or means such as cross-flow filtration using a microfiltration membrane are generally performed.

(3) Problems to be Solved by the Invention In the above-mentioned conventional filtration means, firstly, the total filtration using a filter medium can cope with a wide range of liquid treatment by using filtration aids of various particle sizes, and furthermore, the filtration speed is also reduced. On the other hand, the problem of disposal of a large amount of filter aid remains.
Further, there is also a disadvantage that it is difficult to automate a filtration process and productivity is low.

On the other hand, in cross-flow filtration using a microfiltration membrane,
Bacteria or spores are removed and are suitable for automation. However, there is a drawback that the filtrate is changed in quality from the stock solution. That is, when removing the contaminants, middle and low molecules are also removed, and the taste component important for the liquid seasoning differs from the stock solution.

In view of this situation, the inventors of the present application have conducted intensive studies and found that the liquid seasoning was first subjected to cross-flow filtration, the concentrated solution obtained by the cross-flow filtration was heated, and then filtered through a filter medium. Based on the knowledge that if mixed with the filtrate by filtration, sterilization can be achieved by heating only a very small portion of the filtered product, and the same liquid seasoning as the taste component before the filtration can be obtained. The present invention has been completed.

That is, the present invention is a liquid seasoning having a pore size of 0.05
Cross-flow filtration with a filter medium of ~ 10μ, then heating the concentrated solution obtained by the cross-flow filtration, filtering the filter medium, and mixing the filtrate by the filter medium filtration and the filtrate by the cross-flow filtration. This is a method for producing a liquid seasoning.

(4) Specific means for solving the problem First, the liquid seasoning referred to in the present invention refers to a substance containing umami components such as amino acids, sugars, and organic acids, and specifically, raw soy sauce or hot soy sauce. Soy sauce such as, or bonito extract, kelp extract or soup made by adding a chemical seasoning based on them,
An extract of fish and shellfish such as kelp can be mentioned.

Then, the soup or extract or the like mixed and adjusted as described above is used as a stock solution, which is first supplied to a cross-flow filter and filtered. Cross-flow filtration is a process in which an undiluted solution is circulated along the surface of a filter medium, and the filtrate is passed in a direction perpendicular to the flow of the undiluted solution. Divided.

In this step, it is necessary to sterilize the filtrate, and the pore size of the filter medium is preferably about 0.05 to 10 μm,
Microfiltration membrane as filter medium, ceramic material as material,
Alternatively, Teflon or the like can be used.

Then, the filtrate is kept standing in a tank and serves also as a refining process. This clarification step is not necessarily indispensable because the filtrate has passed through cross-flow filtration, and may be provided as necessary.

Then, in the cross-flow filtration, the concentrated liquid that does not pass through the filter medium is used for precipitating an ori precursor, such as an enzyme, contained therein, or for sterilizing spores, etc.
After heating at 5 [deg.] C. for 5 to 20 seconds, it is transferred to a filter medium filtration step. Filter media filtration refers to a means for filtering by adding a filter aid such as diatomaceous earth to the stock solution, or a means for coating the surface of a filter medium such as filter cloth with a pre-coated filter medium in advance. A plate-type filter or a vacuum drum-type filter can be used. Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 shows a continuous method, wherein 1 is a circulation pump for circulating a liquid seasoning, that is, a stock solution, and 2 is a cross-flow filter. As described above, the cross-flow filter 2 is provided with a tubular, flat or hollow fiber filter medium.

For example, the schematic configuration of the cross-flow filter 2 having a tubular filter medium is as shown in the figure, and includes a stock solution inlet 3, a concentrate solution outlet 4, and a filtrate solution outlet 5, and the stock solution inlet 3 and the concentrate solution outlet 4 are connected by a tubular filter material 6. The filtrate outlet 5 communicates with the stock solution inlet 3 or the concentrate outlet 4 through the tubular filter medium 6.

The discharge port 7 of the circulation pump 1 and the stock solution inlet 3 of the cross-flow filter 2 are connected to each other, and the concentrate outlet 4 of the cross-flow filter 2 and the suction port 8 of the circulation pump 1 are connected to form a circulation circuit 9. I do. The circulation circuit 9 has a discharge port of a supply pump 10 for supplying a stock solution to be cross-flow filtered.
A pipe 12 communicating with 11 and a discharge pipe 13 for guiding the concentrated liquid to the outside are connected to each other. Further, the suction port 14 of the supply pump 10 communicates with a stock solution tank 15 storing a stock solution to be cross-flow filtered.

Reference numeral 16 denotes a recovery pipe for recovering the filtrate filtered by the cross-flow filter 2.
To the filtrate tank 17.

On the other hand, the concentrated liquid which does not pass through the tubular filter 6
By appropriately adjusting the valve 18 provided on the 13, the liquid is discharged to the concentrated liquid tank 19 through the pipe 13.

Reference numeral 20 denotes a heating device formed by a plate heater or the like, which heats the concentrated liquid as described above, forcibly condenses the precursor, and the inlet of the liquid to be heated is a concentrated liquid pump.
It is connected to the concentrate tank 19 via 21. As described above, although the heating step is present in the present invention, only a concentrated solution (about 10% of the stock solution) by cross-flow filtration may be used.
Since the whole undiluted solution is not heated, deterioration due to heating of the product can be minimized. A cooling device 33 serves to cool the concentrated liquid heated by the heating device 20, and the cooling device 33 may be provided as needed.

Reference numeral 22 denotes a filter aid mixing tank to which a filter aid such as diatomaceous earth is added.

Next, reference numeral 23 denotes a filter medium filter for filtering a concentrated solution by cross-flow filtration, and a horizontal filter plate type filter is shown as an example. In FIG. 3, reference numeral 24 denotes a sealed cylindrical casing, in the center of which a filtrate outlet pipe 25 is opened and opened to the outside, and a filter aid 34 is provided on the surface of the outlet pipe 25. A filter member 27 in the shape of a circular dish covered with the filter cloth 26 to be laminated
It communicates with 25 and is fixed in a skewered manner.

A stock solution inlet 28 is provided at the upper part of the casing 24, and a filtration residue discharge port 29 is provided at the lower part.The filter member 27 is vibrated by the action of the motor 30 installed in the casing 24, and adheres to the member 27. After the filtration process, discharge the remaining filtration residue
It is configured to discharge through 29.

The stock solution inlet 28 communicates with the filter aid mixing tank 22 via a concentrate pump 31, and the outlet pipe 25 communicates with the filtrate tank 17 via a pipe 32. An air supply port 35 communicates with a pressurized air source.
It acts to filter the stock solution in 24.

The present invention is configured as described above,
The stock solution stored in 15 is supplied to the circulation circuit 9 by the supply pump 10, and then the stock solution flows through the circulation circuit 9 by the action of the circulation pump 1. At this time, the undiluted solution is gradually removed by the action of the cross-flow filtering device 2, and the filtered solution is sent to the filtered solution tank 17 where it is temporarily stored. On the other hand, the concentrate is sent to the concentrate tank 19 by opening and closing the valve 18 as appropriate, and then passes through the heating device 20 and the cooling device 33 to the auxiliary agent mixing tank.
It is sent to 22, where the aid is added.

Next, the concentrate to which the filtration aid has been added is supplied to the filter medium filtration device 23, where it is subjected to filtration treatment, and the filtration liquid is filtered into a filtration liquid tank.
17 to be mixed with the above-mentioned cross-flow-considered filtrate to form a product. The mixing ratio of the crossflow liquid and the filter medium liquid may be controlled by controlling the flow rates of the recovery pipe 16 and the pipe 32.

Next, FIG. 2 shows another embodiment, that is, an example of a batch system.

In this embodiment, the circulation pump 1 is interposed between the stock solution tank 15 and the cross-flow device 2, and the concentrated solution outlet 4 of the cross-flow device 2 and the stock solution tank 15 are connected.
36, the stock solution is filtered while the circuit 36 is circulated for a certain period of time, and the solution is guided to the solution tank 17.

The concentrated undiluted solution remains in the undiluted solution tank 15 as a concentrated solution, and the concentrated solution is supplied to the filter medium filtering device 23 via the heating device 20, the cooling device 33, and the filtering aid mixing tank 22, and subjected to filtering processing. . This filtrate is sent to the filtrate tank 17 and mixed with the previously stored filtrate by the cross-flow filtration to produce a product.

In this embodiment, there is an advantage that it is not necessary to control the mixing ratio of the filtrate by the cross-flow filtration and the filtrate by the filter medium filtration.

(5) Effects of the Invention The invention of the present application is configured as described above, and a sterilized product can be obtained by heating only a part of the filtered product, and the entire process can be automated. Therefore, productivity can be improved.

Example 1 A liquid seasoning (turbidity; 120 ppm, viable cell count 1 × 10 ³ / g) obtained by adding a skipjack extract and a kelp extract to a concentrated soy sauce manufactured by a conventional method was mixed with 1 KL according to the conditions shown in Table 1 below. And cross-flow filtration machine (Toshiba Ceramics, Membralox, pore siz
e; 0.45μ, filtration area; 2m ² ), and first 870 L of filtrate
(Turbidity: 0.5 ppm, viable cell count: 0 / g), and store in the filtrate tank. Next, 125 L of the concentrated liquid (viable cell count; 8 × 10 ³ cells / g) remaining in the stock solution tank is heated at 120 ° C. for 5 seconds, rapidly cooled to 30 ° C., and then sent to the filter aid mixing tank. After adding 1 kg of Radiolite 300 ^{# in the} tank and mixing with stirring, a horizontal filter plate type filter medium filter (manufactured by Towa Giken Co., Ltd.,
(Filtration area: 0.15 m ² ), and the filtrate (turbidity; 1.
120 ppm of 5 ppm, viable cell count; 0 cells / g) was obtained, introduced into the filtrate tank, and mixed with the filtrate by cross-flow filtration to obtain a product (turbidity; 0.6 ppm, viable cell count; 0 cells / g). Obtained.

Example 2 Skipjack extract (turbidity: 130 ppm, viable cell count 1 × 10 ³ / g,
1 KL was supplied to a cross-flow filter (NTF-5200, manufactured by Nitto Denko Corporation, pore size; 0.2 μ, filtration area: 3.0 m ² ) under the conditions shown in Table 3 below, and 860 L of the filtrate was first used (turbidity). Degree; 0.5 ppm,
The number of viable bacteria (0 / g) is obtained and stored in the filtrate tank. Next, the concentrated liquid remaining in the stock solution tank (viable cell count: 7.5 × 10 ³ cells /
g) 135 L is heated at 120 ° C. for 5 seconds, then rapidly cooled to 30 ° C., and then sent to a filter aid mixing tank. After adding 1 kg of Radiolite 300 ^{# in the} tank and mixing with stirring, a horizontal filter plate type filter medium filter (manufactured by Towa Giken Co., Ltd., filtration area: 0.1) under the conditions shown in Table 4 below
5 m ² ), and 120 L of this filtrate (turbidity; 1.6 ppm, viable cell count; 0 cells / g) was obtained. Turbidity; 0.6pp
m, viable cell count; 0 / g).

[Brief description of the drawings]

1 and 2 are flow chart diagrams of the present invention, and FIG.
The figure shows a front sectional view of the filter medium filter. In the drawings, 2 is a cross-flow filter, 6 is a tubular filter medium, 15 is a stock solution tank, 17 is a filtrate tank, 19 is a concentrate tank, 20 is a heating device, 21 is a cooling device, 22 is a filter aid mixing tank, Reference numeral 23 denotes a filter medium filter.

Claims (1)

(57) [Claims] 1. A liquid seasoning is subjected to cross-flow filtration with a filter medium having a pore size of 0.05 to 10 μm, and then the concentrated liquid obtained by the cross-flow filtration is heated and filtered with a filter medium. And a filtrate obtained by cross-flow filtration.