WO2021186514A1

WO2021186514A1 - Device for replacing blood vessel content of fish and method for manufacturing blood vessel content-replaced fish

Info

Publication number: WO2021186514A1
Application number: PCT/JP2020/011550
Authority: WO
Inventors: 伸太朗今村; 道子國吉
Original assignee: 国立研究開発法人水産研究・教育機構
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-09-23
Also published as: JP7288723B2; JPWO2021186514A1

Abstract

Provided is a device used for replacing blood vessel content of fish with a liquid, the device including: a main body having a hollow structure and an opening capable of being connected to a liquid-supplying part; and a plurality of needle-like tubes that are a hallow structure having an opening and provided in at least a partial region of the main body, wherein the main body communicates with the needle-like tubes. This device can efficiently replace blood vessel content of fish with another liquid. Also provided is a method for manufacturing blood vessel content-replaced fish, the method using said device.

Description

Fish vascular content replacement device, and method for manufacturing vascular content replacement fish

The present invention relates to a fish blood vessel content replacement device and a method for producing a blood vessel content replacement fish using this device.

Conventionally, for the purpose of maintaining the freshness of landed fish (reducing fishy odor, delaying meat softening, etc.), the treatment of replacing the blood vessel contents (blood, etc.) of fish with other liquids (hereinafter, "fish blood vessel contents"). It is sometimes called "replacement of things"). This replacement of the blood vessel contents of fish can be said to be one of the extremely important treatments, especially for fish such as yellowtail (yellowtail), which have many blood lines and a short expiration date of fresh produce.

As a method for replacing the contents of fish blood vessels, for example, Patent Document 1 states that the head and abdomen of a fish are placed along the outer edge of the gills and the tip of the kama so that the blood in the blood vessel system of the fish can be replaced with liquid. The process of forming a slit that communicates the pericardial space with the outside of the fish body without exposing the organs contained in the abdominal cavity of this fish to the outside of the fish body by only cutting, and the arterial sphere in the heart of the fish from the caudal side of the ventricle. The tubular device is unfolded so that it can be inserted toward the heart, and the tubular device is inserted into the heart of the fish through the widened slit from the caudal side of the ventricle toward the arterial sphere, and the tubular device is fixed to the heart. A method for removing blood from a fish is disclosed, which includes a step of discharging the blood of the fish to the outside of the fish body by press-fitting the liquid into the vascular system of the fish via a tubular device.

Japanese Patent No. 6583760

Such replacement of fish blood vessel contents is very important in terms of maintaining the freshness of not only fresh fish products but also frozen products.

However, in the replacement of the contents of fish blood vessels, including the method of Patent Document 1 described above, in the conventional methods, the fish body is opened by cutting or the like, and a tubular device such as a cannula is inserted into the heart or blood vessel to fix the fish blood vessel contents. It is not a simple method because it requires skillful skill in the work. In addition, a certain amount of working time is required, and it takes manpower to process many fish in a short time. This also applies to the method of replacing the contents of the blood vessel of the fish by directly inserting the hose itself into the opening formed near the gills of the fish without using a tubular device or the like. Therefore, there is a problem that it is difficult to carry out a large amount of treatment, especially when replacing the contents of fish blood vessels immediately after landing of fish from a fishing boat or aquaculture farm.

Therefore, the present invention provides an apparatus capable of efficiently replacing the blood vessel contents of fish with another liquid, and a treatment for replacing the blood vessel contents of fish using this apparatus (a treatment for replacing the blood vessel contents with another liquid). It is an object of the present invention to provide a method for producing fish).

As a result of studies to solve the above problems, the present inventor has provided a main body portion having a hollow structure and an opening that can be connected to a liquid supply portion, and at least a part of the main body portion. By using a fish blood vessel content replacement device which is provided with a plurality of needle-shaped tube portions having a hollow structure having an opening and in which the main body portion and these needle-shaped tube portions are communicated with each other, fish can be efficiently used. The present invention has been completed by finding that the vascular contents of the above can be replaced with other liquids.

That is, the present invention is the following (1) to (7).
(1) An instrument used to replace the blood vessel contents of fish with a liquid, the main body having a hollow structure and having an opening that can be connected to the liquid supply part, and the above. Fish blood vessel contents provided with a plurality of needle-shaped tube portions having an opening and having a hollow structure provided in at least a part of the main body portion, and the main body portion and the needle-shaped tube portion communicate with each other. Object replacement device.
(2) The fish blood vessel content replacement device according to (1), wherein the needle-shaped tube portion is provided in three or more in the main body portion.
(3) The needle-shaped tube portion is an opening capable of discharging the liquid at a flow rate of 1 L / min or more and 4 L / min or less as a total amount from all the needle-shaped tube portions provided in the main body portion. The fish blood vessel content replacement device according to (1) or (2), which comprises an area, a length and a number.
(4) All the needle-shaped tubes provided in the main body have an opening area and a length capable of discharging the liquid at a flow rate of 5 mL / min or more and 670 mL / min or less per one. The fish blood vessel content replacement device according to any one of (1) to (3).
(5) The main body portion having a hollow structure and having an opening, and a plurality of needle-shaped tube portions having a hollow structure having an opening provided in at least a part of the main body portion are provided. A fish blood vessel content replacement device in which the main body portion and the needle-shaped tube portion communicate with each other is connected to a liquid supply portion at the opening of the main body portion, and is attached to at least one elliptical portion of the fish whose tail is cut. , The needle-shaped tube portion is pierced to pierce a blood vessel close to the gills portion, and the liquid is supplied to the fish blood vessel content replacement device in a state where the needle-shaped tube portion is pierced, and the needle. A method for producing a blood vessel content-replaced fish, which comprises a fish blood vessel content replacement step of discharging the liquid from the opening of the tubular portion to replace the blood vessel content of the fish with the liquid.
(6) The vascular content-replaced fish according to (5), wherein the liquid is discharged so that the total amount from all the punctured needle-shaped tubes is 1 L / min or more and 4 L / min or less. Manufacturing method.
(7) The blood vessel content according to (5) or (6), wherein the liquid is discharged so as to have a flow rate of 5 mL / min or more and 670 mL / min or less per one of all the punctured needle-shaped tubes. Method for producing replacement fish.

According to the present invention, it is possible to provide a fish blood vessel content replacement device capable of efficiently replacing a fish blood vessel content with another liquid. Then, by substituting the contents of the blood vessel of the fish with another liquid using this device, a large amount of treatment can be performed, and the freshness retention of the fish can be further improved.

It is a side view of the fish blood vessel content replacement apparatus which concerns on 1st Embodiment of this invention. It is an enlarged sectional view around the joint part of the main body part and the needle-like tube part of the fish blood vessel content replacement device which concerns on 1st Embodiment of this invention. It is a figure which shows an example of the state in which the needle-shaped tube portion of the fish blood vessel content replacement apparatus which concerns on 1st Embodiment of this invention is pierced by the gills portion of the fish which cut the tail part. It is a perspective view of the fish blood vessel content replacement apparatus which concerns on 2nd Embodiment of this invention. It is a figure which shows an example of the state in which the needle-shaped tube portion of the fish blood vessel content replacement apparatus which concerns on 2nd Embodiment of this invention is pierced by the gills portion of the fish which cut the tail part. In addition, (a) is a front view seen from the front of a fish, and (b) is a side view seen from the side of a fish. It is a photograph of yellowtail fillet after refrigerated storage for 16 days of Example 1 (drawing substitute photograph). The upper side is a fillet of a fish vessel content replacement device according to the first embodiment of the present invention in which the blood vessel content is replaced with tap water and then refrigerated and stored as a fillet, and the lower side is a fillet in which the blood vessel content is replaced with another liquid. It is a fillet that has been refrigerated and stored as a fillet without being replaced with. The yellowtail fillet (with replacement) that has been replaced with the blood vessel contents shown in the upper part of FIG. 6 and the yellowtail fillet (without replacement) that has not been replaced with the blood vessel contents shown in the lower part of FIG. , It is a graph comparing the redness (R) intensity in the RGB value of the blood vessel muscle portion. It is a photograph which shows the part of the fish meat used for the hemoglobin amount measurement performed in Example 2 (drawing substitute photograph). The upper photo shows the part where the fish fillet was collected from the fish body, and the lower photo shows the part where the fish meat component was extracted from the fish fillet by number. It is a graph which shows the measurement result of the amount of hemoglobin in the fish meat of FIG. 8 performed in Example 2. FIG. The Roman numerals at the top of the graph represent the part where the fish fillet was collected from the fish body shown in FIG. 8, and the number on the horizontal axis of the graph is the part where the fish meat component indicated by the number in the lower photograph of FIG. 8 was extracted. Represents.

The present invention will be described.
The present invention has a main body portion having a hollow structure and having an opening that can be connected to a liquid supply portion, and a plurality of hollow structures having an opening provided in at least a part of the main body portion. A fish blood vessel content replacement device that includes a needle-shaped tube portion and communicates between the main body and these needle-shaped tube portions (hereinafter, may be referred to as "fish blood vessel content replacement device of the present invention"). , And the fish blood vessel content replacement device of the present invention is connected to the liquid supply part at the opening of the main body, and the needle-shaped tube part is pierced into at least one elliptical part of the fish whose tail is cut. A liquid is supplied to the fish blood vessel content replacement device of the present invention in a state where a blood vessel close to the gills is perforated and the needle-shaped tube portion is pierced, and the liquid is discharged from the opening of the needle-shaped tube portion to fish. Fish that replaces the vascular contents and the liquid of Is.

<Fish blood vessel content replacement device>
First, a preferred embodiment of the fish blood vessel content replacement device of the present invention will be described in detail with reference to the drawings.
In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate. Further, in each of the drawings, for convenience, some parts are not marked (omitted). The embodiments described below are merely examples for facilitating the understanding of the present invention, and do not limit the present invention. That is, the shapes, dimensions, arrangements, materials, etc. of the members described below can be changed and improved without departing from the gist of the present invention, and it goes without saying that the present invention includes equivalents thereof. .. The same applies to the embodiment in the method for producing a vascular content-replaced fish according to the present invention, which will be described later.

(overall structure)
The fish blood vessel content replacement device of the present invention includes the following two embodiments as preferable embodiments.

A first embodiment of the fish blood vessel content replacement device 100 of the present invention includes a cylindrical main body 10 having an opening 12 at one end (end) and the main body 10 as shown in FIG. A plurality of needle-shaped tube portions 20 having an opening and having a hollow structure provided on the surface (tip surface) of the other end portion, and the hollow structure of the main body portion 10 and the plurality of needle-shaped tube portions 20 It communicates with the hollow structure. The term "cylindrical" is not limited to a perfect circular cylinder, but also includes an elliptical cylinder. Further, the surface may be uneven. For example, among the diameters passing through the central axis of the cylinder, the longest diameter may include a perfect circular to elliptical cylinder shape of 1 time or more and 1.3 times or less of the shortest diameter. Further, in the present invention, the "needle-shaped tube portion" is a tube portion having an outer shape of a needle and having a tip having an opening. The same applies to the following description.

Further, the second embodiment of the fish blood vessel content replacement device 100 of the present invention has a curved rectangular shape having a hollow structure and an opening 12 on one end surface in the longitudinal direction as shown in FIG. 1. Similar to the embodiment, the hollow structure of the main body portion 10 and the hollow structure of the plurality of needle-shaped tube portions 20 communicate with each other. In the present invention, the "curved square shape" is a shape having a square outer shape and being curved in one of the axial directions. The same applies to the following description.

Further, in both the first embodiment and the second embodiment, it is necessary that the main body portion 10 is provided with a plurality of needle-shaped tube portions 20, and in order for the effect of the present invention to be exhibited, this configuration is provided. Is extremely important. That is, if there is only one needle-shaped tube portion 20 provided in the main body portion 10, even if the needle-shaped tube portion 20 is stabbed into the gills portion 52 of the fish body 50, the blood vessels adjacent to the gills portion 52 cannot be perforated. There is a possibility, and further, if the liquid discharge flow rate required for efficient replacement of fish blood vessel contents is set, the liquid discharge flow rate from this only needle-shaped tube portion 20 becomes too large, and the needle-shaped tube portion There is a possibility that the liquid may flow out from the gap between the 20 and the elliptical portion 52 (particularly the elliptical film), and there is a high possibility that the effect of the present invention will not be exhibited.

In particular, in order to more efficiently replace the contents of fish blood vessels, it is preferable that the needle-shaped tube portion 20 is provided in three or more in the main body portion 10, and the needle-shaped tube portion 20 is formed. It is more preferable that 3 or more are provided per ^{100 mm 2 in the} region (the tip surface of the main body 10 in the first embodiment, the surface of the main body 10 on the bending direction side in the second embodiment). With such a configuration, when a plurality of needle-shaped tube portions 20 are stabbed into the gills portion 52 of the fish body 50, the gills portion can be easily affected by the variation in the size of the fish body 50. It is possible to perforate a blood vessel close to 52, and a sufficient flow rate of liquid discharged from the needle-shaped tube portion 20 can be secured. Further, from the viewpoint of ensuring stability when the needle-shaped tube portion 20 is stabbed into the soft body portion of the gills portion 52 by rolling up or removing at least a part of the gills lid, the main body portion 10 is provided. The total number of needle-shaped tube portions 20 may be 5 or more, and may be 9 or more. Further, the upper limit of the total number may be 40 or less, and further may be 20 or less. In addition, this needle-shaped tube portion 20 may be ^{provided in 5 or more per 100 mm 2} in the above area, and may be further provided in 9 or more. Further, in the above region, ^{it may be 20 or less per 100 mm 2} , and further may be 15 or less.

Further, the needle-shaped tube portion 20 contains a liquid of preferably 1 L / min or more, more preferably 1.5 L / min or more, as a total amount from all the needle-shaped tube portions 20 provided in the main body portion 10. It is preferable to have an opening area, a length and a number capable of discharging at a flow rate of preferably 4 L / min or less, more preferably 3 L / min or less. That is, the combination of the opening area and length of one needle-shaped tube portion 20 and the number of tubes provided in the main body portion 10 is designed so that the discharge flow rate of the liquid can be adjusted within the above numerical range. Is preferable. This is because the liquid can be discharged from the opening of the needle-shaped tube portion 20 at a sufficient flow rate, which makes it possible to replace the contents of the fish blood vessel more quickly and reliably. Since it is unlikely that the needle-shaped tube portion 20 is directly inserted into the heart or blood vessel when it is stabbed into a fish body, the plurality of needle-shaped tube portions 20 as a whole can discharge the liquid at the above flow rate. However, it is very important in that it efficiently replaces the contents of fish vessels with other liquids.
In addition, all the needle-shaped tube portions 20 provided in the main body portion 10 are preferably 5 mL / min or more, more preferably 10 mL / min or more, still more preferably 50 mL / min or more, and preferably 50 mL / min or more. Is preferably provided with an opening area and length capable of discharging the liquid at a flow rate of 670 mL / min or less, more preferably 500 mL / min or less, still more preferably 300 mL / min or less.

Here, in the present invention, the "length" of the needle-shaped tube portion 20 is from the tip of the needle-shaped tube portion 20 to the joint portion with the main body portion 10 (from the portion communicating with the hollow structure of the main body portion 10). ) Is the length. Then, although not limited, the opening areas and lengths of the plurality of needle-shaped tube portions 20 are all substantially the same (for example, the difference in opening area is ^{within 0.1 mm 2} and the difference in length is within 1 mm, etc.). ) May be.

Specific examples of the outer diameter and inner diameter (opening diameter) of one needle-shaped tube portion 20 are not limited, but are for relatively large fish such as yellowtail (inada) and amberjack. If there is, the outer diameter is 1 mm or more and 3 mm or less, the inner diameter is 0.5 mm or more and 1.5 mm or less, and the length of one needle-shaped tube portion 20 is 10 mm or more and 70 mm or less. It is preferable that the main body portion 10 is provided with such a needle-shaped tube portion 20 of 3 or more and 40 or less, and further, the main body portion 10 is provided with 3 or more and 20 or less per ^{100 mm 2 in the forming region (for example, in the forming surface thereof).} There may be.
Further, as the total opening area of the plurality of needle-shaped tube portions 20 (the total value of the opening areas of all the needle-shaped tube portions 20), 1 mm ² or more and 40 mm ² or less are exemplified. The liquid discharge flow rate exemplified from the total opening area and the discharge flow rate described above is 0.5 m / sec or more and 50 m / sec or less.

Further, in both the first embodiment and the second embodiment, the opening 12 of the main body 10 can be connected to the liquid supply 40. When the liquid is supplied from the supply unit 40 to the hollow structure inside the main body 10, the liquid is also supplied to the hollow structure inside the needle-shaped tube portion 20 communicating with the main body 10, and the needle-shaped tube is also supplied. The liquid is discharged from the opening of the portion 20. Examples of the liquid supply unit 40 include a rubber hose connected to a water pipe or a pump as shown in FIGS. 3 and 5, and further, a tubular fitting device or a screwing device. Will be done.

The opening 12 of the main body 10 may have an outer diameter or an inner diameter that can be connected to the hose or the appliance described above, and is not particularly limited, but can be fitted or screwed into the hose or the appliance. The structure is suitable because the connection between the opening 12 and the supply unit 40 is unlikely to be disconnected when the liquid is supplied to the fish blood vessel content replacement device 100. Further, two or more of the openings 12 may be provided in the main body 10, and the position of forming the openings 12 in the main body 10 is not limited.

The liquid supplied from the supply unit 40 to the main body 10 and the needle-shaped tube 20 is not particularly limited as long as it can be used for food. For example, water (tap water, well water, river water, etc.), seawater, etc. are exemplified, and two or more kinds selected from these can be used in combination. Here, the liquid described above may have been sterilized.

Further, the material constituting the main body portion 10 and the needle-shaped tube portion 20 is also not particularly limited, but it is preferable that both the needle-shaped tube portion 20 and the main body portion 10 are made of metal. However, the main body 10 may be made of a material having a Young's modulus lower than that of metal.
Examples of the above-mentioned metal include stainless steel, and examples of the material having a Young's modulus lower than that of the metal include a resin material such as polyvinyl chloride and a rubber material such as hard rubber.

(First Embodiment)
Next, the first embodiment of the fish blood vessel content replacement device 100 of the present invention will be described in detail with reference to FIGS. 1 to 3.

As described above, the first embodiment of the fish blood vessel content replacement device 100 of the present invention includes a cylindrical main body 10 having an opening 12 at one end that can connect to the liquid supply 40. A plurality of needle-shaped tube portions 20 having a hollow structure provided on the surface of the other end portion of the main body portion 10 are provided, and the main body portion 10 and these needle-shaped tube portions 20 communicate with each other. (Figs. 1 to 3).

A plurality of the needle-shaped tube portions 20 are provided on the end portion of the cylindrical main body portion 10 opposite to the opening 12, that is, on one end surface of the cylindrical main body portion 10. As described above, it is preferable that three or more are provided on the tip surface. The distance between the plurality of needle-shaped tube portions 20 is not limited, but the distance between the adjacent needle-shaped tube portions 20 is preferably 10 mm or less, and more preferably 5 mm or less. .. Further, from the viewpoint that the gill film and internal organs are less likely to be damaged by the needle-shaped tube portion 20, this interval is preferably 1 mm or more, and more preferably 3 mm or more.

The hollow structure inside the needle-shaped tube portion 20 communicates with the hollow structure inside the main body portion 10. For example, in FIG. 2 (cross-sectional view in which a part of the needle-shaped tube portion 20 is omitted). As shown, the needle-shaped tube portion 20 is inserted into the tip surface of the main body portion 10 from the hollow structure side inside toward the outside side, and further, the above is described between the main body portion 10 and the needle-shaped tube portion 20. When the gap generated other than the communicating portion is filled with the adhesive member 14 or the like to be fixed and held, the needle-shaped tube portion 20 can be pierced more easily and the liquid can be discharged more efficiently. It is suitable because it can be done.

In this needle-shaped tube portion 20, at least one of the group of needle-shaped tube portions 20 gradually moves from the joint with the main body portion 10 toward the tip of the needle-shaped tube portion 20 from the projecting axial direction of the group of needle-shaped tube portions 20. It may be provided so as to be separated.
Alternatively, in this needle-shaped tube portion 20, at least one of the group of needle-shaped tube portions 20 gradually moves in the direction of the protrusion axis of the group of needle-shaped tube portions 20 from the joint with the main body portion 10 toward the tip. It may be provided so as to approach each other.

Here, the "protruding axial direction of the group of needle-shaped tube portions 20" is the protruding axial direction as a group of regions in which the group of needle-shaped tube portions 20 is formed, that is, the center of gravity of this region (FIG. In the example of the first embodiment shown in 1 to 3, it is the normal vector direction of the center of the tip surface which is a perfect circle). The same applies to the following description.

Further, the length of the needle-shaped tube portion 20 is not limited because it can be changed depending on the fish species used, the set discharge flow rate of the liquid, and the like, but specifically, it is 10 mm or more, and further 20 mm. The above, and 70 mm or less, further 60 mm or less, and further 50 mm or less are exemplified.

Further, the length of the needle-shaped tube portion 20 may be such that at least one of the group of the needle-shaped tube portions 20 is formed so as to be different from the other needle-shaped tube portions 20, that is, a plurality of needle-shaped tubes. The lengths of the pipe portions 20 may not all be substantially the same.

The tip side of the needle-shaped tube portion 20 may have a blade shape, and the blade shapes of the needle-shaped tube portion 20 may all have the same orientation, or as in the embodiment shown in FIG. The orientation of at least one blade shape in the group of needle-shaped tube portions 20 may be different from the orientation of the blade shapes of the other needle-shaped tube portions 20. That is, in the group of the needle-shaped tube portions 20, there may be a configuration in which there are a plurality of blade shapes on the tip side of the needle-shaped tube portion 20. Alternatively, the tip side of one or more needle-shaped tube portions 20 may have a configuration in which the opening surface is parallel to the central axis thereof (that is, the tip side may not be blade-shaped).

Here, the "direction of the blade shape" means the opening direction of the blade shape (normal vector direction of the opening surface) with respect to the central axis of the needle-shaped tube portion 20. When this opening surface is a blade shape composed of a plurality of surfaces, it means the direction of the sum of the normal vectors of the plurality of surfaces.

(Second Embodiment)
Next, a second embodiment of the fish blood vessel content replacement device 100 of the present invention will be described in detail with reference to FIGS. 4 and 5.

In the second embodiment of the fish blood vessel content replacement device 100 of the present invention, as described above, a curved square main body portion 10 having an opening 12 at one end in the longitudinal direction and the curvature of the main body portion 10 A plurality of needle-shaped tube portions 20 having an opening and having a hollow structure provided on the surface on the direction side are provided, and the main body portion 10 and these needle-shaped tube portions 20 communicate with each other (FIG. 4).

The main body 10 has a hollow structure inside, and has an opening 12 that can be connected to the liquid supply portion 40 at one end in the longitudinal direction of the curved rectangular shape as shown in FIGS. 4 and 5. The curvature of the main body 10 is preferably a shape that follows the curvature of the gills 52 of the fish body 50, as shown in FIG. 5A, for example.

Further, as for the needle-shaped tube portion 20, it is preferable that the main body portion 10 is provided with 3 or more needle-shaped tube portions 20, and the distance between the plurality of needle-shaped tube portions 20 is also 1 mm or more and 10 mm. It is preferable that it is provided so as to be within. Further, similarly to the first embodiment described above, the needle-shaped tube portion 20 is inserted into the surface of the main body portion 10 on the bending direction side from the inner hollow structure side toward the outer side, and further, the main body portion is further formed. It is preferable that the gap formed between the 10 and the needle-shaped tube portion 20 other than the communicating portion is filled with the adhesive member 14 or the like to be fixed and held.

As for the length of the needle-shaped tube portion 20, the length of 10 mm or more and 70 mm or less is exemplified as in the first embodiment, and the length of at least one of the group of the needle-shaped tube portion 20 is another needle-shaped tube. It may be formed so as to be different from the portion 20. Further, regarding the direction of the blade shape on the tip side of the needle-shaped tube portion 20, as in the first embodiment, the direction of at least one blade shape in the group of the needle-shaped tube portion 20 is another needle shape. It may be formed so as to be different from the direction of the blade shape of the tube portion 20.

As for the orientation of the needle-shaped tube portion 20, at least one of the group of the needle-shaped tube portions 20 gradually increases from the joint with the main body portion 10 toward the tip, as in the first embodiment described above. It may be provided so as to be separated from or close to the protruding axis direction of the group of needle-shaped tube portions 20. The protruding axis direction of the group of the needle-shaped tube portions 20 in the second embodiment is the normal vector direction of the center of gravity on the surface on the bending direction side where the group of the needle-shaped tube portions 20 is provided.
For example, as in the embodiment shown in FIG. 4, the plurality of needle-shaped tube portions 20 may not be parallel to each other and may protrude substantially in the normal direction on the surface on which each of the needle-shaped tube portions 20 is provided. It may be an embodiment in which the group of the shape tube portions 20 protrudes so as to gather toward the protruding axis direction.

(Modification example)
Another embodiment (variant example) of the fish blood vessel content replacement device 100 of the present invention will be described.

As another embodiment (modified example of the first embodiment or the second embodiment) in the fish blood vessel content replacement device 100 of the present invention, for example, in the above-mentioned first embodiment or the second embodiment, the main body portion 10 The main body 10 having one or more openings 12 at one end of the above, and the main body 10 on the side opposite to the end having the openings 12 is bifurcated or two members are connected by a hinge or the like. An end portion is provided, and in the modified example of the first embodiment, a plurality of needle-shaped tube portions 20 are provided on the tip surfaces of the two end portions of the main body portion 10, respectively. In the modified example, a configuration in which a plurality of needle-shaped tube portions 20 are provided on each of the two surfaces of the main body portion 10 on the bending direction side is shown. With such a configuration, the needle-shaped tube portion 20 can be stabbed into the gills 52 on both sides of the fish body 50 by one fish blood vessel content replacement device 100, and the fish blood vessel content can be replaced more rapidly. It can be performed. In this case, the main body 10 may be made of a material that can be easily deformed, such as hard rubber.

Further, in this modification and the second embodiment described above, the needle-shaped tube portion 20 preferably contains 1 L / min of liquid as the total amount from all the needle-shaped tube portions 20 that pierce one fish body 50. As described above, even if the configuration has an opening area, length and number that can be discharged at a flow rate of more preferably 1.5 L / min or more, preferably 4 L / min or less, more preferably 3 L / min or less. good. Further, all the needle-shaped tube portions 20 provided in the main body portion 10 are preferably 5 mL / min or more, more preferably 10 mL / min or more, and further, in the same manner as in the first embodiment described above. An opening area and length capable of discharging the liquid at a flow rate of preferably 50 mL / min or more, preferably 670 mL / min or less, more preferably 500 mL / min or less, still more preferably 300 mL / min or less. May be good.

<Manufacturing method of blood vessel content replacement fish>
Next, a preferred embodiment in the method for producing a vascular content-replaced fish according to the present invention will be described in detail with reference to FIGS. 3 and 5.
Here, the "blood vessel content replacement fish" includes only round (round fish) fish that have been subjected to a treatment of replacing the blood vessel content with another liquid using the fish blood vessel content replacement device 100 of the present invention. In addition, processed fish that have been processed into semi-dresses, dresses, fillets, loins, fillets, sashimi, etc. are also included.

As a preferred embodiment in the method for producing a blood vessel content-replaced fish according to the present invention, for example, as shown in FIGS. 3 and 5, the above-mentioned fish blood vessel content-replacement device 100 is installed in the opening 12 of the main body 10. Blood vessels (heart, artery, vein, venous sinus, A perforation is made in an arterial sphere, an arterial pyramid, etc.), and in this state, tap water is supplied to the fish blood vessel content replacement device 100, and tap water is discharged from the openings of a plurality of needle-shaped tube portions 20 into the fish body 50. By injecting tap water into the blood vessel through a perforation formed in the blood vessel near the gills 52 due to an increase in water pressure inside the fish body 50 (such as the abdominal cavity) and pushing out the blood vessel content from the cut portion of the tail, the blood vessel content Includes a step of replacing the blood vessel with tap water (fish blood vessel content replacement step).

By the manufacturing method including the fish blood vessel content replacement step, it is possible to easily manufacture fish having improved freshness retention or a processed product thereof (processed fish). In particular, processed fish such as fillets produced by this method are less likely to generate a fishy odor even after frozen (less than 0 ° C) storage or refrigerated (0 ° C or more and less than 5 ° C) storage, and blood muscles. It is difficult for the normal muscles in and around it to become discolored and the meat to soften. And, this method can be easily performed without skill, and it is also a big feature that a large amount of processing can be easily performed.

Here, in the method for producing a vascular content-replaced fish according to the present invention, tap water or the like is used as shown in FIGS. 3 and 5 (b) so that the vascular content of the fish can be easily discharged. It is necessary to cut the tail of the fish before feeding. However, the cutting position of the tail is not particularly limited as long as the blood vessel contents of the fish can be discharged.

In the method for producing a fish for replacing blood vessel contents according to the present invention, the fish is fixed by a method such as forcibly pressing the fish before the step of replacing the blood vessel contents of the fish, or is soaked in cold water, squeezed and nerves. It is preferable to immobilize the fish by strangling. Examples of this active strangulation and nerve strangulation method include a method in which a pick is first inserted between the eyebrows to destroy the brain, and then a wire is inserted along the spine to destroy the spinal cord.

The position where the plurality of needle-shaped tube portions 20 are stabbed needs to be the gills portion 52 in order to perforate the blood vessels adjacent to the gills portion 52 of the fish body 50, but the portion other than the gills portion 52. May be partially included. Then, the needle-shaped tube portion 20 may pierce the soft body portion of the gills portion 52 after removing the gills lid, or may pierce the gills portion 52 from above the gills lid. In the method for producing a blood vessel content-replacement fish according to the present invention using the fish blood vessel content replacement device 100 of the present invention, the gills 52 are cut or the like before the plurality of needle-shaped tube portions 20 are stabbed. It does not have to be open.

Further, regarding the direction in which the needle-shaped tube portion 20 is stabbed, for example, in the case of using the fish blood vessel content replacement device 100 of the first embodiment described above, as shown in FIG. 3, the head of the fish body 50 It is preferable to pierce all the needle-shaped tube portions 20 from the side to the tail side. This is because the vascular contents are more efficiently discharged from the cut portion of the tail.

On the other hand, in the case of using the fish blood vessel content replacement device 100 of the second embodiment described above, as shown in FIG. 5, all the needle-shaped tubes so that the fish body 50 and the main body 10 are substantially parallel to each other. It is preferable to pierce the portion 20. In this case, as also shown in FIGS. 5 (a) and 5 (b), not only one of the gills 52, but also two fish blood vessel content replacement devices 100, or a fish as shown in the above-mentioned modification. It is preferable to use one blood vessel content replacement device 100 and pierce both gills with the needle-shaped tube portion 20 because the replacement of the fish blood vessel content becomes faster.

Then, the perforation of the blood vessel in the vicinity of the gill portion 52 by the needle-shaped tube portion 20 only needs to be able to form a hole into which tap water or the like can be injected in the blood vessel in the vicinity of the gill portion 52, that is, in the present invention. In the method for producing a fish for replacing blood vessel contents, the needle-shaped tube portion 20 itself of the fish blood vessel content replacement device 100 of the present invention does not need to be inserted into the heart or the inside of a blood vessel. Tap water or the like discharged from the plurality of needle-shaped tube portions 20 hardly permeates into the muscle, and easily enters the blood vessel through the perforation formed in the blood vessel near the elliptical portion 52 via the abdominal cavity or the like. Is. Therefore, unlike the case where a tubular device is inserted into the heart or the like, it is not necessary to take care not to break through the heart or the like with the tip of the needle-shaped tube portion 20 or the like.

The tap water used is not limited, but is preferably 0 ° C or higher and 35 ° C or lower (cold water, normal temperature water, etc.). Further, two or more kinds of liquids may be used in combination. Further, the discharge flow rate and the discharge flow velocity of the tap water to be used can be appropriately set according to the fish body size and the like, but it is preferable that the fish blood vessel contents can be replaced reliably and more quickly. As for the discharge flow rate, the total amount from all the punctured needle-shaped tubes is 1 L / min or more, more preferably 1.5 L / min or more, and 4 L / min or less, more preferably 3 L / min or less. Is exemplified, and the discharge flow rate is 0.5 m / sec or more and 50 m / sec or less. The discharge flow rate per needle in all the punctured needle-shaped tubes is preferably 5 mL / min or more, more preferably 10 mL / min or more, still more preferably 50 mL / min or more, and also. An example is preferably 670 mL / min or less, more preferably 500 mL / min or less, still more preferably 300 mL / min or less.

The fish whose blood vessel contents are replaced with tap water or the like according to the above embodiment, that is, the fish whose blood vessel contents are replaced, is stored as it is as a round (round fish) including the head and internal organs (refrigerated storage or frozen storage). Alternatively, it may be stored as a semi-dress with the internal organs removed or a dress with the head removed. Further, it may be stored as a processed product such as a fillet or a fillet.

The method for producing vascular content-replaced fish according to the present invention can be used for fish in general, but is particularly preferably applied to yellowtail (inada), amberjack, tie (red sea bream), etc., for yellowtail (inada), amberjack, etc. Adjustments may be made as appropriate so as to be more suitable for embodiments such as those for Thailand. The same applies to the above-described embodiment of the fish blood vessel content replacement device of the present invention. Here, in the present specification, yellowtail and inada are distinguished by their total length (length from the tip of the head to the tail), and a total length of 80 cm or more is referred to as yellowtail and less than 80 cm is referred to as inada.

Hereinafter, examples of the present invention will be described, but the present invention is not limited to the following examples, and various modifications can be made within the technical idea of the present invention.

(Example 1)
A TS cap (JIS K6743: 2016, nominal diameter 13 mm) was joined to one end of a cylindrical tube made of polyvinyl chloride (JIS K6742: 2016, VP13) to prepare a main body. The area of the tip surface on the side where the TS cap of the main body is joined is 132 mm ² .

Further, on the tip surface, nine hollow needles (18 G, outer diameter 1.25 ± 0.02 mm, inner diameter 0.82 ± 0.03 mm, length 38 mm) are placed as needle-like tubes inside the main body. And the internal hollow structure of the nine hollow needles are communicated with each other and joined so that the positions are approximately evenly distributed (the distance between adjacent hollow needles is 1 mm or more and 10 mm or less), and this communication is performed. A fish blood vessel content replacement device as shown in FIG. 1 was produced by filling the gaps other than the portions with an adhesive member to fix and hold the gaps.

Then, a hose connected to the water pipe was attached to the opening at the other end of the main body of this fish blood vessel content replacement device. In this state, as shown in FIG. 3, the needle-shaped tube portion of the fish blood vessel content replacement device is attached to the gills of yellowtail (about 5 kg) with the tail cut, and the gills are covered from the head toward the tail. It was pierced from above and pierced the blood vessel near the gills.

Next, tap water is supplied to the fish blood vessel content replacement device, and tap water is discharged from the openings of the nine needle-shaped tubes so that the total flow rate is about 2 L / min. Water was infused for 10 minutes and the vessel contents were drained through the cut in the tail.

Inada whose blood vessel contents were replaced with tap water in this way was frozen and stored in a fillet. The temperature during frozen storage was −20 ° C., and the temperature during refrigerated storage was 4 ° C. In addition, as Comparative Example 1, yellowtail in which the blood vessel contents were not replaced with other liquids and was made into fillet was also stored in the same manner.

As a result, it was clarified that inada, in which the blood vessel contents were replaced by the above-mentioned fish blood vessel content replacement device, suppressed browning of bloody muscles during frozen storage (less discoloration) and was less likely to cause fleshy softening. rice field. It was also clarified that the fishy odor of fish meat after refrigerated storage for 7 days was reduced, and that browning of the bloodline muscles of fish meat after refrigerated storage for 16 days was also suppressed (FIGS. 6 and 7).

For example, as shown in the photograph of FIG. 6 and the comparison graph of the redness intensity by the RGB values of FIG. 7, for the yellowtail fillet after refrigerated storage for 16 days in the fillet, in Comparative Example 1, the entire blood line was browned and the redness was reduced. However, strong browning progress was observed especially in the bloody muscle near the boundary with the normal muscle. However, in the product of the present invention stored after replacing the blood vessel contents with the above-mentioned fish blood vessel content replacement device, the redness of the blood vessel muscle was maintained, browning was not observed, and the redness of the normal muscle was not lost. rice field.

(Example 2)
Inada in which the blood vessel contents were replaced with tap water by the method of Example 1 (blood vessel contents replacement treatment inada), and inada (Ella) in which the vascular contents were removed by venous resection of the vascular fluid as compared with Comparative Example 2. Venous excision Inada) and Inada (untreated Inada), which had been subjected to spinal cord puncture as Comparative Example 3, were each cooled overnight in seawater ice. After that, fish fillets are cut from the maximum height (II), the middle part between the maximum height and the tip of the gills (I), and the middle part between the maximum height and the caudal peduncle (III) shown in the photograph of FIG. Collected. Then, from the cross section of these fillets, fish meat at 12 sites indicated by numbers in the lower photograph of FIG. 8 was collected, and each fish meat component was extracted with SDS-Urea buffer, and SDS-polyacrylamide gel electrophoresis was performed. Proteins were separated by molecular weight by electrophoresis (SDS-PAGE), transferred to a membrane, and the amount of hemoglobin was measured by Western blotting using a hemoglobin antibody. The result is shown in FIG. In the graph of FIG. 9, the amount of hemoglobin with respect to the sample weight was displayed as a relative value.

As a result, in the untreated yellowtail of Comparative Example 3, a large amount of hemoglobin (that is, blood vessel contents) remained in the muscle, and in the bloody muscle, the amount of hemoglobin was slightly small in the vicinity of the skin (1, 5, 9), but it was normal. The amount of hemoglobin was maximum near the muscle (3, 7, 11). The amount of hemoglobin in normal muscle was small (4, 8, 12). In addition, there was almost no difference in the amount of hemoglobin depending on the site where the fillet was collected.
In the gills vein resection inada of Comparative Example 2, the muscle (I) near the gills lid had a small amount of hemoglobin, but the muscle (III) near the tail had a large amount of hemoglobin, and the blood vessel contents by the gills vein resection. It was shown that the removal efficiency of yellowtail is not high.
On the other hand, in the blood content replacement treatment Inada, the amount of hemoglobin was small in all muscle sites and cross sections. From these results, it was clarified that this blood content replacement treatment has a higher efficiency of removing the vascular contents than the conventional treatment such as gill vein resection.

(Example 3)
As the needle-shaped tube part, one hollow needle (outer diameter 3.40 mm, inner diameter 2.77 mm, length 70 mm: Comparative Example 4), three hollow needles (18 G, outer diameter 1.25 ± 0.02 mm, Inner diameter 0.82 ± 0.03 mm, length 38 mm), 5 hollow needles (18 G, outer diameter 1.25 ± 0.02 mm, inner diameter 0.82 ± 0.03 mm, length 38 mm), 9 hollow needles A needle (18 G, outer diameter 1.25 ± 0.02 mm, inner diameter 0.82 ± 0.03 mm, length 38 mm) is joined to the main body produced in Example 1 by the same method as in Example 1, and 4 A kind of fish blood vessel content replacement device was prepared. Then, using these, blood vessel content replacement treatment was performed on yellowtail having a body weight of about 500 g. In each case, the water pressure was adjusted so that the total discharge flow rate of tap water discharged from all the needle-shaped pipes provided in one instrument was about 2 L / min.

As a result, in the device having one needle-shaped tube portion of Comparative Example 4, the discharge flow rate per needle-shaped tube portion is about 2 L / min (about 2000 mL / min), so that most of the water from the elastic soft body portion. Leaked and the contents of the blood vessels could hardly be replaced with tap water.
On the other hand, an instrument with three needle-shaped tubes (discharge flow rate per needle-shaped tube is about 667 mL / min) and an instrument with five needle-shaped tubes (discharge per needle-shaped tube). With a device with 9 needle-shaped tubes (discharge rate per needle-shaped tube is about 222 mL / min), the blood vessel contents can be replaced with tap water. It was possible. In particular, with an instrument having nine needle-shaped tubes, the blood contents could be replaced extremely efficiently.

Based on the above, by replacing the blood vessel contents of Inada with tap water using the fish blood vessel content replacement device of the present invention, discoloration of blood muscles and softening of meat during frozen storage can be suppressed, and freshness deterioration during refrigerated storage and deterioration of freshness during refrigerated storage can be suppressed. It was shown that discoloration can be suppressed and the quality retention period can be extended. It was also shown that the replacement treatment of yellowtail blood vessel contents can be efficiently performed by using the fish blood vessel content replacement device of the present invention.

100 Fish blood vessel content replacement device 10 Main body 12 Opening 14 Adhesive member 20 Needle tube 40 Liquid supply (hose)
50 Fish body 52 Ella part

Claims

An instrument used to replace the blood vessel contents of fish with liquids.
A main body having a hollow structure and an opening that can be connected to the liquid supply part,
A plurality of needle-shaped tube portions having an opening and having a hollow structure provided in at least a part of the main body portion are provided.
A fish blood vessel content replacement device in which the main body portion and the needle-shaped tube portion communicate with each other.
The fish blood vessel content replacement device according to claim 1, wherein the needle-shaped tube portion is provided in three or more in the main body portion.
The needle-shaped tube portion has an opening area and length capable of discharging the liquid at a flow rate of 1 L / min or more and 4 L / min or less as a total amount from all the needle-shaped tube portions provided in the main body portion. The fish blood vessel content replacement device according to claim 1 or 2, further comprising a number of rods.
Claim 1 that all the needle-shaped tube portions provided in the main body portion have an opening area and a length capable of discharging the liquid at a flow rate of 5 mL / min or more and 670 mL / min or less per one. The fish blood vessel content replacement device according to any one of 3 to 3.
A main body portion having a hollow structure and an opening, and a plurality of needle-shaped tube portions having a hollow structure having an opening provided in at least a part of the main body portion are provided with the main body portion. A fish blood vessel content replacement device communicating with the needle-shaped tube portion is connected to a liquid supply portion at the opening of the main body portion.
The needle-shaped tube was pierced into at least one gills of a fish whose tail was cut to pierce a blood vessel adjacent to the gills.
The liquid is supplied to the fish blood vessel content replacement device in a state where the needle-shaped tube portion is pierced, and the liquid is discharged from the opening of the needle-shaped tube portion, thereby causing the fish blood vessel contents and the fish. Includes a fish vessel content replacement step to replace the liquid,
A method for producing a fish that replaces blood vessel contents.
The method for producing a vascular content-replaced fish according to claim 5, wherein the liquid is discharged so that the total amount from all the punctured needle-shaped tubes is 1 L / min or more and 4 L / min or less. ..
The production of the blood vessel content-replacement fish according to claim 5 or 6, wherein the liquid is discharged so as to have a flow rate of 5 mL / min or more and 670 mL / min or less per one of all the punctured needle-shaped tubes. Method.