JP2002281933A - Method for producing essence of dried bonito pieces - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing an essence of dried bonito pieces having low alcohol, slight heat odor and rich flavor of the dried bonito. SOLUTION: This method for producing the essence comprises performing extraction from the dried bonito pieces separately filled in columns through using as an extractant a dried bonito pieces alcohol extracted solution previously obtained by an alcohol extraction from dried bonito pieces and removing the alcohol at 20-40 deg.C from the columns extracted solution thus obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for producing a fragrant knot extract.

[0002]

2. Description of the Related Art Generally, on an industrial scale, extraction of extracts from katsuobushi and other knots is carried out in a batch system in which extraction is performed using a tank. This method is a method in which knots and hot water or an alcohol solution are mixed and stirred, and filtered / pressed to obtain an extract.

[0003] However, the extract obtained by the above-mentioned batch method has a strong smell of knots and a low solid content of the extract.

On the other hand, a column extraction method in which knots are packed in a column and extraction is performed using water or an alcohol solution as an extraction solvent can obtain an extract having a higher flavor than the above-mentioned batch extraction method. In this column extraction method, a water extraction method is adopted particularly when the flavor (taste and scent) is emphasized, and an alcohol extraction method is adopted when the scent is emphasized.

[0005]

In the above column extraction method using an alcohol solution, the higher the alcohol concentration of the extraction solvent, the stronger the aroma of the extracted extract, but the higher the alcohol concentration of the obtained extract. To become
It was necessary to reduce the alcohol concentration of the extract.

As a method for lowering the alcohol concentration of the extract, there are known a method of removing the alcohol by heating under normal pressure or reduced pressure, and a method of adding a large amount of auxiliary materials to lower the alcohol concentration. .

However, the former method has a problem that the fragrance is severely deteriorated by the heat treatment, and the heated odor is also increased. On the other hand, the latter method has a problem that the fragrance is weakened because the extract is also diluted.

[0008] Accordingly, an object of the present invention is to provide a method for producing a knot extract having a low alcohol content, a low heat smell, and a rich knot.

[0009]

Means for Solving the Problems To achieve the above object, a method for producing a knot extract according to the present invention comprises the steps of: using an alcohol extract of a knot obtained by extracting alcohol from a knot in advance as an extraction solvent; A step of extracting from a separately filled node, and 20 to 20 columns from the column extract obtained in the step.
Removing the alcohol under a temperature condition of 40 ° C.

[0010] In the present invention, the extraction solvent is any one of alcohol extracts selected from bonito, saba-node, shimeji-no-kushi, and their cutting, by-products in the knot-making process, or a mixture thereof. Is preferred.

According to the present invention, a very strong scented extract is obtained by extracting from a node separately packed in a column using an alcohol extract of the node obtained by extracting alcohol from the node in advance as an extraction solvent. A liquid can be obtained.
Then, by treating this extract under a temperature condition of 20 to 40 ° C. to remove alcohol, deterioration of the scent due to heat and generation of a heated odor can be suppressed. A rich knot extract can be obtained.

In the present invention, it is preferable that the extraction temperature at the time of extraction from the nodes packed in the column be 40 to 85 ° C. According to this aspect, the extract of the knot can be efficiently extracted.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION A method for producing a knot extract according to the present invention comprises the steps of extracting from a knot separately charged in a column using an alcohol extract of the knot obtained in advance from the knot as an extraction solvent. Removing the alcohol from the column extract obtained in the above step under a temperature condition of 20 to 40 ° C. Hereinafter, each step will be described.

(1) A step of extracting from a node packed in a column using an alcohol extract of a node obtained by extracting alcohol from a node in advance as an extraction solvent First, alcohol extraction of a node used as an extraction solvent for the column The liquid (hereinafter, referred to as a column extraction solvent) will be described.

As a raw material for alcohol extraction, preferably selected is one selected from among bonito, saba-knot, sword-knot, cut-off and by-products in the knot-making process, and a mixture thereof.

The solvent used for the alcohol extraction may be alcohol or an alcohol solution (preferably an aqueous solution), and the alcohol concentration is 50 to 100 v / v%.
Is preferable, and 50 to 75 v / v% is more preferable. If the alcohol concentration of the solvent is less than 50 v / v%, a highly fragrant extract cannot be obtained. The alcohol is not particularly limited as long as it can be used for food production, but ethanol is particularly preferably used.

The method for obtaining the column extraction solvent from the above raw materials is not particularly limited, and a known extraction method such as a batch method can be employed. For example, in the case of extraction by a batch method, an alcohol or an alcohol solution of 3 to 10 times, preferably 5 to 10 times the mass of the raw material is used, and 0.5 to 2 times in a tank.
Reflux extraction (50 to 60 ° C.)
(It is not necessary to reflux in the case of extracting with), whereby a column extraction solvent can be obtained.

The solid content of the column extraction solvent thus obtained is preferably 15 to 30% by mass, and the alcohol concentration thereof is preferably 50 to 75 v / v%.

Next, column extraction will be described. In the present invention, the knot used as a raw material for column extraction is not particularly limited. Mixtures are mentioned.

In order to increase the efficiency of column extraction,
It is preferable that the nodes to be packed in the column are previously crushed, shredded, or the like by an appropriate means. Specifically, the size after crushing is preferably 4 to 20 mesh, and more preferably 6 to 16 mesh. If the size is smaller than 20 mesh, the nodules expand in the column during extraction, the pressure increases, and extraction becomes difficult. In addition, the extraction efficiency is deteriorated, which is not preferable. In addition,
In order to efficiently pack the raw material into the column, the raw material is mixed with an appropriate amount (0.2 to 0.5 times the amount of the nodal raw material) of the above column extraction solvent and packed into the column. ~
Extraction efficiency can be increased by starting the extraction after keeping it warm for one hour.

The total amount of the column extraction solvent used (the total amount of the column extraction solvent added when the column is filled with the raw material and the column extraction solvent passed) is 0.7 to 1.
The amount is preferably 3 times, more preferably 0.9 to 1.1 times. If the total amount of the column extraction solvent is less than 0.7 times the mass of the raw material, the extraction becomes insufficient and the cost increases,
If the amount is more than 1.3 times, overextraction occurs and the flavor deteriorates.

The extraction temperature is preferably from 40 to 85 ° C, more preferably from 50 to 75 ° C. If the extraction temperature is less than 40 ° C., the elution of the extract will be delayed, and the solid concentration of the extract will be low. If it exceeds 85 ° C., the flavor will deteriorate, which is not preferable.

The flow rate is a space velocity (hereinafter referred to as SV) which indicates how many times the volume of the column flows in one hour.
0.1 to 2.5 SV is preferable,
0.5 to 1.5 SV is more preferable. Flow rate is 0.1
If it is less than SV, it takes a long time for extraction, and if it exceeds 2.5 SV, the extraction efficiency is poor and the solid content concentration of the extract is undesirably low.

The column extract obtained in this step has a very good taste and a high solid content.

(2) Step of removing alcohol from the column extract at a temperature of 20 to 40 ° C. The column extract obtained in the above step has a concentration of about 20 to 50 V.
/ V% alcohol, the alcohol is removed until the alcohol concentration becomes 15 v / v% or less, preferably 8 to 12 v / v%.

As a method for removing alcohol, 20
Any method can be used as long as it can remove the alcohol under a temperature condition of ４０40 ° C. (hereinafter, referred to as room temperature). For example, a method of evaporating alcohol is employed.

[0027]

The present invention will be specifically described below with reference to examples. Example 10 times the volume of 50 v for 100 parts by mass of crushed bonito
/ V% alcohol aqueous solution, and 8
A tank reflux extraction was performed at 0 to 90 ° C. for 1 hour to obtain a column extraction solvent (alcohol concentration: 50 v / v%, solid content: 18% by mass).

The dried bonito was crushed with a household mixer to prepare a 10-mesh pass product. 360g of this dried bonito preparation
Was mixed with 90 ml of the column extraction solvent described above, packed in a column (volume: 550 ml, φ4.0 cm × 50 cm), and allowed to stand still at 55 to 60 ° C. for 45 minutes. Then, using the column extraction solvent at the same temperature, at a liquid passing rate of 1 SV,
Extraction was performed until the amount of the collected column extract reached 600 ml.

Then, in a working room maintained at 20 to 25 ° C., the column extract (alcohol concentration 30 v / v%)
While stirring the mixture, air was blown against the liquid surface with a fan to remove the alcohol, thereby obtaining a knot extract having an alcohol concentration of 12 v / v%.

Comparative Example 1 A column extract obtained in the same manner as in the Example was
The mixture was heated to 0 ° C. and distilled under normal pressure to remove alcohol, thereby obtaining a knot extract having an alcohol concentration of 12 v / v%.

Comparative Example 2 Katsuobushi was crushed with a household mixer to prepare a 10-mesh pass product. 360 g of this dried bonito preparation is added to 50 v / v
The mixture was mixed with 90 ml of a 50% aqueous alcohol solution and packed in a column (volume: 550 ml, φ4.0 cm × 50 cm).
The mixture was allowed to stand still at 5 to 60 ° C. for 45 minutes. Thereafter, extraction was performed using the above column extraction solvent at the same temperature at a flow rate of 1 SV until the volume of the collected column extract reached 600 ml.

This column extract (alcohol concentration 30 v
/ V%), alcohol was removed in the same manner as in the example to obtain a knot extract having an alcohol concentration of 12 v / v%.

Using the knot extract obtained in each of the examples, sensory evaluation was performed on the scent and the heated odor by 10 panelists. Table 1 shows the results.

[0034]

[Table 1]

From Table 1, it can be seen that the knot extract of the example has a very good aroma and no heating odor compared to the comparative example.

[0036]

As described above, according to the present invention,
By using the alcohol extract of the knot obtained in advance from the knot as an extraction solvent and extracting from the knot separately filled in the column, an extract with a very strong scent can be obtained. By treating the liquid at a temperature of 20 to 40 ° C. to remove alcohol, deterioration of the scent due to heat and generation of a heated odor can be suppressed, and a low alcohol, very fragrant knot extract. Can be obtained.

Claims (3)

[Claims] 1. A step of extracting from a node separately packed in a column using an alcohol extract of a node obtained by extracting alcohol from a node in advance as an extraction solvent, and extracting from the column extract obtained in the step. Removing the alcohol under a temperature condition of 20 to 40 ° C. 2. The method according to claim 1, wherein the extraction solvent is bonito, mackerel,
The method for producing a knot extract according to claim 1, wherein the knot extract is a by-product produced in a knotting or knotting process or an alcohol extract selected from a mixture thereof. 3. The method for producing a knot extract according to claim 1, wherein an extraction temperature at the time of extraction from the knot packed in the column is 40 to 85 ° C.