JPH09149768A - Method for thawing frozen sushi, packaging container and auxiliary equipment used therefor - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To thaw frozen sushi, it is possible to thaw the frozen sushi in a short time while maintaining high quality sushi ingredients. SOLUTION: Frozen sushi 3 in which a sushi material 3a and a sushi material 3b are frozen together is placed in a radiation region 13 in which a high frequency wave 12a is radiated from a high frequency power source 12 so that the side of the sari 3a faces the high frequency power source 12. The high frequency 12a works preferentially on this, and by covering the high frequency generation source 12 side of the portion protruding from the surroundings of the sushi material 3b with the reflecting member 21 to reduce the high frequency 12a from reaching the sushi material 3b, The above objective is achieved by balancing the thawing of the salari 3a and the sushi material 3b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for thawing frozen sushi, which is obtained by combining sushi ingredients with frozen sashimi, and a packaging container and auxiliary equipment used therefor.

[0002]

2. Description of the Related Art With the development of the food service industry, many kinds of frozen foods have recently been handled in large quantities.
In the case of sushi that combines sushi ingredients with salari, it is frozen and stored in large quantities and stored at the same time, shipped according to demand, provided to the market or a restaurant, and handed to the purchaser or to the customer at the restaurant. It is desired to be able to thaw at the time of delivery or at the time of purchase by the purchaser himself.

Various methods have heretofore been proposed for thawing frozen sushi, such as heating with steam, heating with hot air, and heating with high frequency such as electromagnetic microwave with a microwave oven. In both cases, steam, warm air, and high-frequency waves for thawing are exposed to the salaried portion and the sushi material portion of the frozen sushi to ensure uniform thawing of the frozen sushi.

[0004]

[Problems to be Solved by the Invention] However, while it is rare that the quality of sari deteriorates due to heat,
When the temperature exceeds the optimum temperature, the quality of the sushi material deteriorates, and not only the taste deteriorates, but it may also rot. Also, if there is a temperature difference during the thawing stage, it may cause spoilage.

For this reason, if the sushi and sushi ingredients are thawed without any distinction as in the conventional case, the sushi ingredients with no volume and a high thawing rate exceed the appropriate temperature and the quality of the sushi portions with a large volume and a slow thawing rate deteriorates. However, there is a problem in that a rapid heating causes a partial temperature difference, which causes decomposition. Therefore, conventionally, a defrosting method and apparatus for frozen sushi that can withstand practical use have not yet been realized.

An object of the present invention is to solve the above-mentioned problems, and it is possible to thaw frozen sushi in a short time while keeping the quality of the sushi material in a short time, a method for thawing frozen sushi, and a packaging container and an auxiliary used therefor. The purpose is to provide a tool.

[0007]

A method for thawing frozen sushi according to the present invention is a frozen sushi which is obtained by sushi and frozen frozen sushi in a radiation area where a high frequency is radiated from a high frequency source. Place it so that it faces the source and cover the high frequency source side of the part that protrudes from the house yield of sushi material with a reflecting member that reflects high frequency, and in this state radiate high frequency to frozen sushi and the high frequency becomes sushi material. It is characterized by thawing frozen sushi by mitigating the spread with a reflecting member and preferentially working high frequency to the salari.
The invention of claim 2 uses a microwave as a high frequency, and the invention of claim 3 uses an electromagnetic wave as a high frequency. In any of the inventions of claims 1 to 3, the high frequency radiated from the high frequency source is Since it works directly on the salaried portion of the frozen sushi facing the high frequency source, the volume of the salaried portion of frozen sushi is several times larger than the sushi material, but the high frequency passes through the whole well,
It is efficiently heated and thawed. On the other hand, the sushi material is behind the volume-enhancing portion of the sushi, most of which is exposed to weak high-frequency waves passing through this volume-enhancing portion of the sushi, and the portion protruding from the sushi portion faces the high-frequency source. However, since it is not covered by the reflection member and directly receives the high frequency emitted from the high frequency source, a weak high frequency that works around the sushi part and the sushi news part behind it works, so the entire sushi news item is It will be heated and thawed with lower efficiency. Therefore, since it is possible to heat and thaw the well-balanced portion of the sushi and the portion of the sushi without a volume in a well-balanced manner, the thawing speed can be increased and the sushi can be thawed in a short time while maintaining high quality. .

According to the second aspect of the present invention, in particular, since the high frequency wave is microwave, the heating efficiency is good and the thawing time can be further shortened.

In particular, the invention of claim 3 has an advantage that, because the high frequency is an electromagnetic wave, thawing in a short time with good heating efficiency can be performed using a general microwave oven and no special device is required.

In the packaging container of the invention of claim 4, the lower housing portion into which the salaried portion of the sushi fits in a substantially aligned manner, and the sushi material that fits over the salaried portion and protrudes around the salaried portion fits on the lower housing portion. The present invention is characterized by comprising a container body having a high-frequency permeable sheet-shaped member for forming a sushi storage portion having two upper tiered sushi storage portions and a lid for closing the sushi storage portion of the container body. The auxiliary tool according to the invention of claim 5 has a hole into which the lower housing portion of the container body according to claim 2 fits, and reflects a high frequency wave having a thickness smaller than ½ of the depth of the lower housing portion. The packaging container of the invention of claim 4 can be handled by fitting the lid to the sushi and closing the lid in a sealed state. Therefore, the sushi is frozen. Even when preserved, it suppresses the growth of various bacteria well and keeps it for a long time. It is convenient for there also convenience of handling collectively a predetermined number. Moreover, the packaging container is accommodated in the lower accommodation part when the lower accommodation part of the container body is fitted into the hole held by the reflection plate which is the auxiliary tool of claim 4 in such a packaging state. Most of the salaried portion projects on the one side of the reflecting plate in a state of being covered by the lower accommodating portion, and the part of the sushi material portion protruding from the salient portion is covered by the one side of the reflecting plate. The thaw method of the invention according to claim 1, wherein the packaging container containing frozen sushi and the auxiliary tool thus combined are placed in a high-frequency radiation emission region from the high-frequency generation source, and the one surface of the reflector is directed to the high-frequency generation source. Can be easily achieved.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for thawing frozen sushi according to the present invention and a packaging container and an auxiliary tool used for the method will be described below with reference to the drawings.

In this embodiment, a high frequency power source 12 called a magnetron of a microwave oven 11 as shown in FIG. As shown in Figure 3a
Place the frozen sushi 3 with the sushi material 3b frozen in such a way that the side 3a of the sushi material 3a faces the high-frequency source 12, and the high-frequency source 12 side of the portion of the sushi material 3b protruding from around the area 3a of the sushi material 3b is set to the high frequency 12a. The high frequency wave 12a is covered with a reflection member 21 for reflecting the high frequency wave 12a to the sushi material 3b by radiating the high frequency wave 12 to the frozen sushi 3 in this state. Thaw frozen sushi 3 by working first. The high frequency is not limited to electromagnetic waves, and various types can be used. However, from the viewpoint of heating efficiency, microwaves, particularly ultra-short waves, are suitable, and when electromagnetic waves are used, a general microwave oven 11 can be used, and no special device is required.

The packaging container 1 is placed on the turntable 14 of the microwave oven 11, and the function of the electromagnetic high frequency wave 12a is sushi 3.
I try to work equally against.

According to the defrosting method shown in FIG. 1, the high frequency wave 12a emitted from the high frequency wave source 12 is the high frequency wave source 1
Since the portion 3a of the frozen sushi 3 facing the 2 directly works, the portion 3a of the frozen sushi 3 has a volume several times larger than that of the sushi material 3b, but the high frequency wave 12a passes through the whole well and is efficiently heated. It will be thawed. On the other hand, the sushi material 3b is located behind the volumetric salaried portion 3a, and most of the portion is the volumed salaried portion 3a.
Even if the portion protruding from the portion of the house 3a faces the high frequency source 12, the high frequency 12a emitted from the high frequency source 12 is directly covered by the reflection member 21 even if the portion protruding from the portion 3a faces the high frequency source 12. Don't receive it, profit 3a
Since the weak high-frequency wave 12a that circulates through the portion and the portion of the sushi material 3b behind it works, the entire sushi material 3b is heated and thawed at a lower efficiency than the portion of the salari 3a.

Therefore, since the portion of the sushi 3a with a volume and the portion of the sushi material 3b without a volume can be heated and thawed in a well-balanced manner, the thawing speed can be increased to keep the sushi material of high quality in a short time. It can be thawed as it is.

3 and 4 show a packaging container 1 and an auxiliary tool 2 used in the above-mentioned thawing method of the present embodiment. The packaging container 1 and the auxiliary tool 2 are combined in a state where the frozen sushi 3 contained in the packaging container 1 is thawed.

In this embodiment, the frozen sushi 3 is thawed by the electromagnetic high frequency wave 12a using the microwave oven 11 as shown in FIG. A material that does not generate heat, that is, a non-polar molecule is suitable. In this embodiment, a sheet material made of polypropylene or polyethylene is molded. However, it is not limited to this.

As shown in FIGS. 3 and 4, the packaging container 1 has a lower housing portion 6a into which the portion of the sushi 3a of the sushi 3 is fitted in a substantially aligned manner, and above the lower housing portion 6a, the sushi 3a is attached to the housing 3a. A container body 7 formed by molding a sushi storage part 6 having two stages of an upper storage part 6b into which the sushi material 3b that fits together and protrudes around the sari 3a, and the sushi storage part 6 of this container body 7 are formed. And a lid 8 for closing.

The sushi material 3b mainly refers to seafood and its eggs, which have a great problem of taste and spoilage against heat, but the present invention is not limited to this and there is no problem in applying to any sushi material.

The container body 7 is formed by arranging several sushi accommodating parts 6 in the vertical and horizontal directions. The same material as the container body 7 is molded, and the container body is covered as shown in the figure to accommodate each sushi. The part 6 is collectively closed and hermetically sealed. However, it is not limited to this. For example, it may be closed at once, or may be covered with a sheet-like lid 8 and heat-sealed to the opening edge of the container body 7 with a high frequency wave or a heater so as to be sealed. In this case, the grid-shaped opening edges 7a for partitioning the sushi storage portions 6 are flush with each other, and the lid 8 is heat-welded particularly to the frame-shaped outer periphery of the opening edges 7a, so that the sushi storage portions are 6 should be sealed. The lid 8 may be heat-welded to the entire surface of the grid-shaped opening edge 7a. The container body 7 also has an opening edge 7
A downward flange 7b is provided on the outer periphery of a to improve the shape retention and strength. Similarly, the lid 8 also has a downwardly facing flange 8a on the outer periphery thereof, and serves as a fitting portion for sealing the container body 7, and also serves as a reinforcement of the lid 8. It is efficient and preferable to freeze the sushi 3 packed in the packing container 1 with the lid 8 removed.

As shown in FIGS. 2 and 3, the assisting tool 2 is formed of a plate-shaped reflecting member 21 that reflects high frequencies, has a hole 22 into which the lower accommodating portion 6a of the container body 7 is fitted, and has a lower portion. It has a thickness B2 smaller than one half of the depth B1 of the accommodation portion 6a. As a material for this, a steel plate, particularly a stainless steel plate is suitable. However, it is not limited to this.

Since the packaging container 1 as described above can handle the sushi 3 in which the sushi material 3a is combined with the sushi 3a in a sealed manner, even when the sushi 3 is frozen and stored, the propagation of various bacteria can be well suppressed and the sushi 3 can be stored for a long time. It is convenient to save, and also has the convenience of being able to handle a predetermined number at once. Moreover, when the lower container 6a of the container body 7 is fitted into the hole 22 of the reflection member 21 forming the auxiliary tool 2 while the packaging container 1 is in such a hermetically sealed state, the lower container 6a is inserted into the lower container 6a. Most of the housed portion 3a of the housed portion protrudes on one side of the reflection member 21 while being covered by the lower housing portion 6a as shown in FIGS. Since the portion protruding from the portion 3b is covered with one surface of the reflecting member 21, the packaging container 1 containing the frozen sushi 3 and the auxiliary tool 2 thus combined generate a high frequency as shown in FIG. The above defrosting method can be easily achieved by placing the electromagnetic high frequency wave 12a from the source 12 in the radiation region 13 and radiating the one surface of the reflecting member 21 to the high frequency generating source 12.

[0023]

According to the method for thawing frozen sushi according to the inventions of claims 1 to 3, it is possible to heat and thaw a well-balanced sushi portion and a non-volume sushi material portion in a well-balanced manner. The sushi can be thawed in a short period of time while maintaining high quality.

According to the second aspect of the present invention, in particular, since the high frequency wave is microwave, the heating efficiency is good and the thawing time can be further shortened.

Since the high frequency is electromagnetic waves, the invention of claim 3 has an advantage that it can be thawed in a short time with good heating efficiency by using a general microwave oven and no special device is required.

According to the packaging container of the invention of claim 4, even when the sushi is frozen and stored, the growth of various bacteria is well suppressed, it is convenient for long-term storage, and a predetermined number can be handled collectively. There is also convenience. Moreover, the thawing method of the invention of claim 1 can be easily achieved by combining the packaging container with the auxiliary tool of claim 4.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a defrosting state showing a defrosting method according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a packaging state of frozen sushi to be thawed in FIG. 1, which is viewed from different angles.

3 is a plan view of the packaging container of FIG. 2 with the lid removed.

[Explanation of symbols]

 1 Packaging Container 2 Auxiliary Equipment 3 Sushi 3a Shari 3b Sushi Net 6 Sushi Storage 6a Lower Storage 6b Upper Storage 7 Container 8 Lid 12 High Frequency Source 12a High Frequency 13 Radiation Area 21 Plate-shaped Reflective Member 22 Holes

Claims (5)

[Claims] 1. Frozen sushi which is frozen by matching sushi to the radiant in the radiation range where the high frequency is radiated from the high frequency source is placed with the sushi side facing the high frequency source and from the sushi yield rate. The high frequency source side of the protruding part is covered with a reflective member that reflects high frequency, and in this state, the high frequency is given priority to profit while radiating high frequency to the frozen sushi and alleviating the high frequency from reaching the sushi material with the reflective member. A method for thawing frozen sushi, which comprises thawing the frozen sushi by working on the above. 2. The method for thawing frozen sushi according to claim 1, wherein the high frequency is microwave. 3. The method for thawing frozen sushi according to claim 1, wherein the high frequency is an electromagnetic wave. 4. A lower accommodating portion into which the salaried portion of sushi fits in a substantially aligned manner, and an upper accommodating portion into which the sushi material that fits into the salari and protrudes around the salient portion is fitted into the lower accommodating portion. What is claimed is: 1. A packaging container, comprising: a container body having a sheet-shaped member having a sushi accommodating portion having a step formed of a high-frequency transparent sheet; 5. The auxiliary member comprising a reflection plate having a hole into which the lower housing portion of the container body according to claim 2 fits and having a thickness smaller than one half of the depth of the lower housing portion and reflecting high frequencies. Ingredient