JP2928123B2 - Packaging firefly squid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a firefly squid wrapped in a packaging material and subjected to a predetermined treatment.
More specifically, the present invention relates to a packaged firefly squid that provides firefly squid that can be eaten raw.

[0002]

2. Description of the Related Art In Japan, firefly squid (scientific name: Wataseniascintila) is mainly captured in Toyama Bay.
ns) is widely used for food as a seasonal delicacy representing Toyama. As a method for cooking this firefly squid, it is common to boil and eat it with vinegar miso, but in recent years, it has also become common to eat raw squid directly as sashimi.

[0003] In addition, the distribution method is generally to distribute in a refrigerated state, and to distribute in a frozen state is not performed because of the specific problems described below.

[0004]

However, it has been recently discovered from some cases that parasites that harm the human body are infested in packaged firefly squid.

[0005] This parasite is taxonomically subsp.
irulina) (hereinafter referred to as rotifer nematode) to which parasitism occurs in the internal stomach and intestinal tract of firefly squid, and it has been confirmed that humans are infected when firefly squid is eaten. If this rotifer nematode infects humans, it may cause skin disease and intestinal obstruction, and the parasitic rate on firefly squid averages several percent (according to the results of a field survey presented at the 54th Annual Meeting of the Japanese Parasitological Society East Japan). Early spring 1.2%
5.4, the highest in early June
%, It is confirmed that it tends to decrease. ), It can be said that eating raw food is dangerous.

[0006] Since the above nematode is killed by heat, it is not infected if the firefly squid is heated, or in the case of eating raw fish, the internal part where the nematode parasite is removed is removed. In fact, the localities have been eating this way since ancient times, so infections have never surfaced.

However, nowadays, firefly squid is distributed in refrigerated conditions throughout Japan due to the improvement of transportation means. There is a tendency to prize eating raw foods with the internal organs, and the infection has recently surfaced.

The present invention has been made in view of the above-mentioned problems, and it is safe for a consumer to eat in any manner, that is, to eat the whole body, and to obtain the same texture and flavor as freshly caught. The purpose is to provide the firefly squid that is maintained.

[0009]

SUMMARY OF THE INVENTION The present invention achieves the above object by not catching a firefly squid as a single unit, but as a packaged firefly squid in which a firefly squid is combined with a packaging material. That is, in the present application, the packaged firefly squid of the first invention is a material having a higher osmotic pressure than that of firefly squid, which is wrapped with a sheet-shaped water-absorbent packaging material in which one or both surfaces are covered with a water-permeable semipermeable membrane, and is -20. It is characterized by being rapidly frozen in a temperature range of less than ℃.

Next, in the firefly squid of the second invention, the firefly squid is rapidly frozen in a temperature range of −20 ° C. or less, and one or both surfaces of a substance having a higher osmotic pressure than the firefly squid are coated with a water-permeable semipermeable membrane. It is characterized by being covered with a coated sheet-like water-absorbent packaging material.

Next, in the firefly squid of the third invention, the firefly squid is made into a tray-like casing, and a substance having a higher osmotic pressure than the firefly squid is laid on the inner surface thereof.
A sheet in which the surface is accommodated in a water-absorbent packaging material covered with a water-permeable semipermeable membrane, and between the accommodated firefly squids and on one or both sides of a substance having a higher osmotic pressure than the firefly squid on its surface, a sheet covered with a water-permeable semipermeable membrane The water-absorbent packaging material is rapidly frozen in a temperature range of −20 ° C. or less.

Next, the firefly squid according to a fourth aspect of the present invention is that the firefly squid is rapidly frozen in a temperature range of -20 ° C. or less, and is made into a tray-like casing. The inner surface of the squid has a higher osmotic pressure than the firefly squid. While spreading the substance, housed in a water-absorbent packaging material whose surface is covered with a water-permeable semipermeable membrane,
Further, a sheet-like water-absorbent packaging material is provided between the accommodated firefly squids and on the surface thereof, wherein one or both surfaces of a substance having a higher osmotic pressure than the firefly squid is covered with a water-permeable semipermeable membrane.

[0013]

In the above invention, the firefly squid is subjected to a rapid freezing treatment in a temperature range of -20 ° C or less. According to the findings of the inventors of the present application, the nematode that parasitizes the firefly squid dies in the above temperature zone. In fact, according to the test results at the Toyama Prefectural Fisheries Experimental Station, firefly squid parasitized with the nematode of Nematoda was stored at -30 ° C for 1-3 days.
It has been confirmed that 2,250 out of 500 worms are killed, and that the remaining 250 worms are also killed in a few days by refrigeration. According to the test results presented at the 54th Annual Meeting of the Japanese Parasitic Society East Japan, firefly squid infested with nematodes was stored at −32 ° C. for 30 minutes. Nematodes have been killed.

Therefore, according to the present invention, the action of exterminating the nematode, which is parasitic on the firefly squid, by freezing first occurs. In this case, the upper limit of the freezing temperature is set to −20 ° C. for the reason that it is difficult to effectively exterminate nematodes at higher temperatures.

The lower limit is not limited, but may be -32
If the temperature is lower than ℃, there is a risk of remarkably destroying the structure of the firefly squid, especially the internal organs.
A temperature range of 32 ° C. is good.

[0016] As described above, if the firefly squid is frozen in a certain temperature range, the problem of infection with the nematode of the tailtail can be solved.
In this case, a new problem occurs. In other words, firefly squid with a small torso length of about 7 cm has flesh with a unique chewing feeling different from squid of normal size, but when this is frozen and thawed, the tissue is destroyed by the growth of ice crystals and this causes A delicate texture is spoiled.

On the other hand, the built-in portion of firefly squid contains a large amount of lipid, which is also oxidized by freezing and thawing to alter the firefly squid, causing a phenomenon that the appearance, flavor and texture are remarkably deteriorated.

The above-mentioned phenomena are mainly caused by unnecessary moisture of the firefly squid during freezing and drip during thawing. In the present invention, the firefly squid before and after freezing or after freezing is encapsulated by a water-absorbent packaging material in which a substance having an osmotic pressure higher than that of the firefly squid is covered with a water-permeable semipermeable membrane. Is absorbed by the packaging material, and the active ingredient of the firefly squid is prevented from being absorbed by the water-permeable semipermeable membrane, thereby producing an effect of preventing the above phenomenon.

[0019]

【Example】

 (First Example) 1) Raw firefly squid is washed with water or salt water and drained well.

2) This is covered with a sheet-like packaging material in which a substance having a higher osmotic pressure than firefly squid is covered with a water-permeable semipermeable membrane. This packaging material is conventionally known (for example, Japanese Patent Application Laid-Open No. 61-249341, Japanese Patent Application Laid-Open No. 1-1).
30730, etc.), wherein edible sugar is used as a substance having a higher osmotic pressure than firefly squid, and a water-soluble paste is mixed with the edible sugar to adjust the water absorption. Although a film coated with a film is used, it is a matter of course that the coating may be formed on one side and the other side may be made of a normal water-impermeable material.

3) The above packaged firefly squid is -20
Freeze rapidly in the temperature range from ℃ to -32 ℃. In this case, in order to exterminate the tailtail nematode parasitic on the firefly squid, -20
In the case of ° C, freezing is required for 2 to 3 days, and in the case of -32 ° C, freezing is required for 30 minutes or more.

In the above embodiment, as described above, the firefly squid is covered with a water-absorbent wrapping material to absorb unnecessary moisture before and after freezing, thereby preventing deterioration. The experimental data is disclosed here for reference, as it depends on the packaging material and the time.

[0023] Note: The package used is a mixture of edible sugar and a water-soluble paste, which is covered with a 0.2 mm thick polyvinyl alcohol film. In 0.1 m ² in package A, in 0.1 m ² in an edible saccharide and a water-soluble paste is 4~6g package B, edible sugars and water-soluble paste is in 6~8g package C 0 among .1m ^2, edible sugar and the water-soluble paste is 8~10g

As described above, the oxidation of a large amount of lipid contained in the internal portion of the firefly squid is prevented by encapsulating the firefly squid with the water-absorbent packaging material. Is disclosed.

[0025] Note: 1 → Based on standard fat and oil analysis test method (edited by Japan Oil Chemical Association). 2 → Mass fragment method was used. 3 → Standard agar plating method was used.

(Second Embodiment) 1) Raw firefly squid is washed with water or salt water and drained well.

2) This is rapidly frozen in a temperature range of -20 ° C to -32 ° C. The refrigeration conditions in this case are the same as those in the first embodiment. 3) This is covered with a sheet-like packaging material in which a substance having an osmotic pressure higher than that of firefly squid is covered with a water-permeable semipermeable membrane. The packaging material in this case is the same as in the first embodiment.

(Third Embodiment) 1) Raw firefly squid is washed with water or salt water and drained well.

2) This is made into a tray-shaped casing, and a substance having a higher osmotic pressure than that of the firefly squid is spread on the inner surface thereof, and is housed in a packaging material whose surface is covered with a water-permeable semipermeable membrane. This packaging material is composed of a tray-shaped casing 1, and the casing 1 is made of paper (here, recycled cardboard is used), and edible sugar 2 is spread on the inner surface thereof as a substance having a higher osmotic pressure than firefly squid.
Further, the surface is covered with cellophane 3 as a water-permeable semipermeable membrane (see FIGS. 1 and 2).

3) Further, a sheet-like packaging material in which a substance having an osmotic pressure higher than that of the firefly squid is covered with a water-permeable semipermeable membrane between the firefly squid and the surface thereof is applied. The packaging material in this case is the same as in the first embodiment.

4) The above packaged firefly squid is -20
Freeze rapidly in the temperature range from ℃ to -32 ℃. The refrigeration conditions in this case are the same as those in the first embodiment. (Fourth embodiment) 1) Wash the raw firefly squid with water or brine and drain the water well.

2) This is rapidly frozen in a temperature range from -20 ° C to -32 ° C. The refrigeration conditions in this case are the same as those in the first embodiment.

3) This is made into a tray-shaped casing, and a substance having a higher osmotic pressure than the firefly squid is spread on the inner surface thereof, and is housed in a packaging material whose surface is covered with a water-permeable semipermeable membrane. The packaging material in this case is the same as in the first embodiment.

4) A sheet-like packaging material in which a substance having a higher osmotic pressure than that of the firefly squid is covered with a water-permeable semipermeable membrane between the firefly squid and the surface thereof is applied. The packaging material in this case is the same as in the first embodiment.

[0035]

The present invention having the above configuration has the following specific effects. Since freezing eliminates the parasitic nematode nematode, the firefly squid that can be eaten safely can be realized.

Since the firefly squid is enveloped in the absorbent packaging material, the firefly squid is prevented from being deteriorated by the above-mentioned freezing and thawing, and a firefly squid that is fresh and can be eaten with confidence is realized.

According to the present invention, it is possible to freeze the firefly squid in a state where deterioration is prevented, so that the firefly squid can be eaten throughout the year regardless of the capture period.

[0038] Similarly, for the same reason, the firefly squid at the time when the parasitic rate of the nematode is the least is stored as a firefly squid packaged according to the present invention, so that the firefly squid that minimizes the danger of the nematode can be distributed. Becomes possible.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a packaging material used in the present invention.

FIG. 2 is a sectional view of the same.

[Explanation of symbols]

 1 housing 2 edible sugar 3 cellophane

Claims (4)

(57) [Claims] 1. A firefly squid packed in a container, wherein a firefly squid wrapped in a water-absorbent packaging material as described in (a) below is rapidly frozen in a temperature range of -20 ° C. or lower. (A) A sheet-like packaging material in which one or both surfaces of a substance having a higher osmotic pressure than firefly squid is covered with a water-permeable semipermeable membrane. 2. A packaged firefly squid wherein a firefly squid is rapidly frozen in a temperature range of -20 ° C. or lower, and is wrapped with a water-absorbent wrapping material as described in (a) below. (A) A sheet-like packaging material in which one or both surfaces of a substance having a higher osmotic pressure than firefly squid is covered with a water-permeable semipermeable membrane. 3. A firefly squid is accommodated in a water-absorbent packaging material described in the following (a), and the water-absorbent packaging material described in the following (b) is applied between the accommodated firefly squids and on the surface thereof.
A packaged firefly squid characterized by being rapidly frozen at a temperature of 0 ° C or lower. (A) A packaging material in which a tray-shaped casing is covered with a substance having an osmotic pressure higher than that of the firefly squid, and the surface is covered with a water-permeable semipermeable membrane. (B) A sheet-like packaging material in which one or both surfaces of a substance having a higher osmotic pressure than firefly squid is covered with a water-permeable semipermeable membrane. 4. A firefly squid is rapidly frozen in a temperature range of -20 ° C. or lower, and stored in a water-absorbent packaging material described in (A) below. A firefly squid packaged with a water-absorbent packaging material. (A) A packaging material in which a tray-shaped casing is covered with a substance having an osmotic pressure higher than that of the firefly squid, and the surface is covered with a water-permeable semipermeable membrane. (B) A sheet-like packaging material in which one or both surfaces of a substance having a higher osmotic pressure than firefly squid is covered with a water-permeable semipermeable membrane.