JP3269185B2 - Liquid food and drink and heating method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of heating a liquid food or drink using a microwave oven and a liquid food or drink in a microwave heating container.

[0002]

2. Description of the Related Art In recent years, microwave ovens have become widespread for both business use and home use, and are used for simple cooking as a cooking appliance capable of heating food in a short time.

[0003] For such users, for example,
Some people drink sake in a microwave oven and then drink milk in a cup and heat it in a microwave oven to make hot milk.

However, when heating in a microwave oven, the upper part of the liquid contained in the container is sufficiently heated and at an appropriate temperature, but the lower part is still insufficiently heated due to insufficient heating. It is common experience that heating is not performed uniformly, for example, when the temperature is adjusted to an appropriate temperature, the temperature of the upper part becomes too hot. Also, if such a non-uniformly heated food is consumed as it is, it is extremely unpleasant that, for example, milk of an appropriate temperature becomes warm at first and then becomes cold.

[0005] In addition, when sake is heated in a microwave oven in a microwave oven, bumping often occurs due to overheating of the surface. Not only will the taste of sake drop when bumping,
It will also pollute the microwave oven. Furthermore, when milk is placed in a cup and warmed in a microwave oven, a film in which protein is thermally coagulated on the milk surface due to overheating of the surface, or a heat coagulated protein is formed on the surface in contact with the container wall. Often sticks.

[0006] When the liquid food or beverage is heated in a microwave oven as described above, it is difficult to uniformly heat the food or drink to an appropriate temperature, and sometimes problems such as bumping due to local overheating of non-uniform heating and precipitation of a thermocoagulated product occur.

[0007]

SUMMARY OF THE INVENTION Under the technical background described in the preceding paragraph, the present invention relates to a method of heating a liquid food or beverage with a microwave oven, wherein the liquid food or beverage is uniformly heated to an appropriate temperature, It is an object of the present invention to provide means for effectively preventing bumping due to thermal overheating and precipitation of thermocoagulated material, and further provide a liquid food or drink in a microwave heating container using such means.

[0008]

Means for Solving the Problems As a result of intensive studies to achieve the object described in the preceding paragraph, the present inventor has found that when a liquid food or drink is contained in a container and heated in a microwave oven, microwaves are applied to the liquid. Arrange protrusions made of material having the function of collecting,
Further, they have found that the above-mentioned object can be achieved by disposing a lid made of a material that blocks microwaves at the edge of the container, and have accomplished the present invention based on such knowledge.

[0009] That is, the present invention firstly arranges a projection made of a material which has a function of collecting microwaves so as to be housed in a container and prevent local overheating to perform uniform heating. The present invention relates to a method for heating liquid food or drink, which comprises heating the food or drink in a microwave oven.

There is no particular limitation on the microwave oven used in the method of the present invention, and even a small household microwave oven having an output of about 500 to 600 W has a large output of about 1400 to 1600 W. It may be a commercial microwave oven.

There is no particular limitation on the liquid food or drink to be heated by the method of the present invention, and the above-mentioned milk, liquor and food or drink having similar problems in heating, for example, potage Soups, other soups, sauces, soup flour, miso soup, noodle soup, etc., and also include curry, stew, gratin, meat sauce, and other liquid foods and drinks having solid ingredients. Furthermore, the present invention is also directed to a food in which a liquid food such as curry rice, ramen, udon and the like is combined with rice, noodles, pasta and the like and heated in a microwave oven. For example, liquid foods having a high viscosity such as potage soup and stew can also eliminate temperature unevenness caused by microwave heating according to the present invention.

Of course, the container in which the liquid food or drink is to be stored must be able to withstand microwave heating. From this perspective, porcelain cups and porcelain bottles can be used, but are not limited to these.

The most important feature of the present invention is that when a protrusion made of a material having a function of collecting microwaves is heated in a microwave oven, the protrusion is arranged with respect to a liquid food or drink to be heated. Hereinafter, this will be described in detail.

It is already known that a projection such as a nail or a conical metal piece such as stainless steel has a function of collecting microwaves. However, in microwave heating of liquid foods and drinks, it has not been known yet to utilize such a phenomenon for uniform heating of the whole liquid food or drink in a container. The present inventor has successfully solved the problems of uneven heating and local overheating caused by microwave heating by utilizing this phenomenon.

Therefore, the protrusion made of a material having a function of collecting microwaves to be arranged with respect to the liquid food or drink,
The number, material, size, shape, and the like are not particularly limited as long as the above-described phenomena occur and uniform heating is achieved. Such protrusions can be disposable.

There is no particular limitation in arranging such projections on the liquid food or drink stored in the container as long as the liquid food or drink is arranged to be uniformly heated. Incidentally, the term "uniform heating" in the present invention means that it is impossible to heat the entire liquid food or beverage completely and evenly with a microwave oven.
Compared to when not using such protrusions, the concept encompasses all cases where heating is more uniform when heating is performed under the same other conditions except for using such protrusions. is there.

The projection made of a material having a function of collecting microwaves can be arranged as follows for the purpose of its arrangement. That is, such protrusions are arranged at the center of the surface layer portion of the liquid food or drink, or in the vicinity thereof, that is, at the portion that is less likely to be heated compared to the outer peripheral portion.

In order to perform such an arrangement, for example, at the center or near the surface of the liquid food or drink contained in the container, the tip of the protrusion is soaked in the liquid food or drink so that the surface of the protrusion is immersed in the liquid food or drink. To place. As long as the same effect can be obtained, the tip of the projection does not necessarily have to be immersed in the liquid, and may be in contact with the surface or may be slightly floating from the surface. Further, for example, the protrusion may be arranged upward from the container bottom (in this case, the protrusion tip is preferably immersed in a liquid, but may be in a non-immersed state). In some cases, it is also possible to arrange a projection from the container side wall toward the center of the liquid. In this case, if the projections are formed in the shape of a spoon (see FIG. 1 (h)) or a stirrer, they can be used as they are for stirring the liquid food or drink after heating in a microwave oven. In short, it is preferable that the protrusion made of a material having a function of collecting microwaves is arranged such that its tip is located in a portion of the liquid food or drink that is not easily heated. Such an arrangement can be easily determined by those skilled in the art by a preliminary trial.

In addition, as described above, the protrusion made of a material having a function of collecting microwaves prevents local overheating of the liquid food or drink contained in the container and makes the entire liquid food or drink uniform. Is to be heated. From such a viewpoint, it is appropriate that the protrusions are specifically arranged, for example, as shown in FIGS. 1 (a) to 1 (h). (a) is a rod-shaped support piece made of a suitable material with a projection attached to it in an antenna shape at right angles, and this support piece is hung on the edge of the container so that the tip of the projection is immersed in the liquid. The projection is arranged at an appropriate position. (b) shows the situation where it was so arranged. (c) shows an inverted triangular projection attached to the support piece, and (d) shows a structure in which one end of the support piece can be hooked on the edge of the container (the left end of the support piece is the container The projections are arranged from the side wall of the container toward the center of the liquid food or drink, and (e) is a support piece having two rods crossed. The projections (three) are attached,
(f) is an example in which the support piece is spiral, and (g) is an example in which protrusions (three) are arranged from the bottom to the top of the container. (h) is an example in which protrusions are formed and arranged in a spoon shape. In these cases, the support piece and the antenna-like small piece can be formed by integral molding depending on the material.

After preparing a liquid food or drink in a container and provided with protrusions made of a material having a function of collecting microwaves so as to perform uniform heating while preventing local overheating, Those skilled in the art can easily determine the operating conditions of the microwave oven, such as the output and the heating time when heating the microwave oven to an appropriate temperature, based on past experience and by a preliminary trial.

According to the method of the present invention, the sticking of the heat-coagulated product to the container wall due to overheating as described above, which occurs when heating a protein liquid food or drink such as milk in a microwave oven, is more easily and completely achieved. In order to prevent this, a lid made of a material that blocks microwaves may be arranged at the edge of the container.

The lid may be made of any material having an effect of blocking microwaves, including metal foils such as aluminum foil and stainless steel foil. Furthermore, if a translucent metal or the like having fine holes that do not transmit microwaves is used, the contents can be easily checked from the outside of the lid. Its shape is to cover the edge of the container to prevent the heat-coagulated product from sticking to the container wall due to overheating, and is, for example, as shown in FIG. 2 (a). FIG. 2 (b) shows the situation where it is placed on the edge of the container. The shape of the lid is not limited, and any shape may be sufficient as long as it covers at least the peripheral portion, and the central portion may or may not be open.

A second aspect of the present invention is to provide a liquid food or drink in a microwave oven container utilizing the above-mentioned features of the present invention, more specifically, to prevent local overheating and to perform uniform heating. The present invention relates to a liquid food or drink in a microwave heating container, wherein a protrusion made of a material having a function of collecting microwaves is disposed or can be disposed in the container.

Liquid foods and drinks in a container suitable for heating in a microwave oven have already been known, including a method for producing the same.
The liquid food and drink in a microwave oven container according to the present invention can be in accordance with a well-known manufacturing method except for a projection made of a material having a function of collecting microwaves.

The projection which is a feature of the present invention may be formed integrally with the container, if possible, or may be attached to the container when the liquid food or drink is put into circulation.

In the liquid food or drink in the container of the present invention, for the same reason as described in relation to the first aspect of the present invention, in order to achieve the same purpose, a lid made of a material that blocks microwaves may be arranged at the edge of the container. Of course you can. This lid may be disposed in a form fixed to the lid of the container for liquid food or drink in a container, or may be integrated with the projection (FIG. 2).
(a)) Also, when putting a liquid food or drink in a container into distribution, it can be attached.

[0027]

The present invention will be further described below with reference to examples.

(A) Warming of sake: Comparative Example 1A 350 g of sake was poured into a sake bottle having an opening diameter of 3 cm, a bottom diameter of 6 cm, and a depth of 19 cm. This was placed in a commercial microwave oven with an output of 1400 W, and irradiated with microwaves for 60 seconds.

During this time, the temperature distribution was measured every 20 seconds at the top and bottom of sake in the sake bottle. By the way, the temperature distribution immediately after irradiation for 60 seconds was an upper temperature of 85 ° C,
At a bottom temperature of 63 ° C, the temperature difference between the two actually reached 22 ° C.

When the liquor thus heated (warmed) was eaten and consumed, the upper part was overheated and the bottom part was in a well-prepared state. Already at this point, the liquor was splashed by bumping.

When the irradiation time was shortened, the upper part was well furnished, but the bottom part was in a lubricious state due to insufficient heating.

As described above, it is not possible to obtain a good sake by simply heating in a microwave oven.

COMPARATIVE EXAMPLE 1B A comparative example was adopted except that the entire surface and side surfaces of the opening of the mug were covered up to a liquid level of 4 cm with an aluminum foil having a heat of 0.2 mm and the lid was covered (see FIG. 2; however, there were no protrusions). Microwave heating was performed as in 1A.

The temperature distribution immediately after the irradiation for 60 seconds is that the upper temperature is 64 ° C.
Whereas the bottom temperature was 57 ° C.

In this case, overheating of the upper portion is suppressed, and when eating and drinking, the upper portion is heated to a good degree of heat, whereas the bottom portion is in a somewhat lukewarm state with insufficient heating, and it is difficult to say that warming is moderate.

Example 1 An aluminum foil lid having a small antenna-like piece as shown in FIG. 1A was used as the metal lid used in Comparative Example 1B (see FIG. 2). The antenna-shaped small piece is a stainless metal piece, needle-shaped, 0.3 mm in diameter and 100 m in length
m, and the tip was immersed 10 cm below the liquid surface. Otherwise, microwave heating was performed in the same manner as in Comparative Example 1B.

The temperature distribution immediately after irradiation for 60 seconds is as follows: the upper temperature is 67 ° C.
, Whereas the bottom temperature was 65 ° C.

In this case, overheating of the upper part is suppressed, and the bottom part is also heated due to the effect of the gathering of microwaves on the antenna. The temperature difference is suppressed to only 2 ° C., and the temperature is adjusted to a temperature suitable for sake sake. there were.

FIG. 3 shows the results of measuring the temperature difference between the top and bottom portions during heating in a microwave oven every 20 seconds when the metal lid was not used (Comparative Example 1A) and when the metal lid and the antenna-like small piece were used (Example 1). Show. The temperature difference of the case using the metal cover and the antenna-like small piece (the present invention) is 15 times larger than that of the case using no metal cover (comparative).
It can be seen that it is less by ~ 30 ° C.

(B) Warming of milk: Comparative Example 2 200 g of milk was poured into a mug having an opening diameter of 7 cm and a depth of 8 cm. Put this in a commercial microwave oven with an output of 1500W,
Microwave irradiation was performed for 60 seconds.

During this time, the temperature distribution was measured every 20 seconds at the top and bottom of the milk in the mug. By the way, the temperature distribution immediately after irradiation for 60 seconds was 93 ° C. at the top, 67 ° C. at the bottom, and the temperature difference between them reached 26 ° C.

In this case, when eating and drinking, the top was extremely hot, whereas the bottom was tepid due to insufficient heating. At this point, bumping occurred due to boiling at the top, and milk was scattered outside and sticking to the cup, resulting in a very poor appearance.

Example 2 As shown in FIG. 2, an aluminum foil lid with an antenna-like small piece was used (the antenna-like small piece was a stainless metal piece, the shape was a needle shape, the size was 0.3 mm in diameter, Length 40m
m, and the tip was immersed in the liquid level by 20 mm. Except for ()), microwave heating was performed in the same manner as in Comparative Example 2.

The temperature distribution immediately after irradiation for 60 seconds is that the upper temperature is 80 ° C.
Whereas the bottom temperature was 71 ° C.

In this case, overheating of the upper part is suppressed, and the bottom part also rises in temperature due to the effect of collecting microwaves on the antenna.
The temperature difference was suppressed to 9 ° C. It was a favorable temperature for eating and drinking.

FIG. 4 shows the results of measuring the temperature difference between the top and bottom parts during heating in a microwave oven in Comparative Example 2 and Example 2 every 20 seconds. It can be seen that the temperature according to the present invention is lower by 20 to 30 ° C. than those not so.

(C) Warm soup: Comparative Example 3A Corn soup was placed in a mug having an opening diameter of 7 cm and a depth of 8 cm.
g was injected. This was placed in a commercial microwave oven with an output of 1500 W, and irradiated with microwaves for 40 seconds.

During this time, the temperature distribution was measured every 20 seconds at the top and bottom of the soup in the cup. The temperature distribution immediately after the 40-second irradiation was 91 ° C. at the top, and 56 ° C. at the bottom.

In this case, the temperature difference between the top and the bottom is actually 35
° C was also generated, and when eating and drinking, the top was extremely hot, while the bottom was slim due to insufficient heating. When heating was further continued, bumping occurred due to boiling at the upper portion, and the soup was scattered to the outside and sticking to the cup, resulting in a very poor appearance.

Comparative Example 3B A microwave oven was heated in the same manner as in Comparative Example 3A, except that the entire surface and side surfaces of the opening of the mug were covered up to a liquid level of 1 cm with a lid using a 0.2 mm thick aluminum foil.

In this case, the temperature distribution immediately after irradiation for 40 seconds is as follows:
Although the temperature at the top was 80 ° C, the temperature at the bottom was 52 ° C.
The temperature was as high as 28 ° C, and when eating and drinking, the top was well-heated while the bottom was tepid due to insufficient heating.

Example 3 As shown in FIG. 2, an aluminum foil lid with an antenna-like piece was used (the antenna-like piece was a stainless metal piece, the shape was a needle, the size was 0.3 mm in diameter, Length 40m
m, and the tip was immersed in the liquid level by 20 mm. Except for ()), microwave heating was performed in the same manner as in Comparative Example 3B.

The temperature distribution immediately after the irradiation for 40 seconds was 80 ° C. at the top, while the temperature distribution at the bottom was 66 ° C.

In this case, overheating of the upper portion was suppressed, and the bottom portion was also heated by the effect of collecting microwaves on the antenna, and the temperature difference was suppressed to 14 ° C. It was a favorable temperature for eating and drinking.

FIG. 5 shows the results of measuring the temperature difference between the top and bottom parts during heating in the microwave oven in Comparative Example 3A and Example 3 every 20 seconds. It can be seen that the temperature difference is smaller in the case of the present invention than in the case where it is not.

[0056]

According to the present invention, when heating a liquid food or drink with a microwave oven, the liquid food or drink is uniformly heated to an appropriate temperature, and bumping due to local overheating and precipitation of heat coagulated material are effectively prevented. Can be done easily.

[Brief description of the drawings]

FIG. 1 illustrates a projection made of a material having a function of collecting microphone waves in the present invention.

FIG. 2 illustrates a lid placed on the edge of the container in the present invention.

FIG. 3 shows the results in Example 1 together with comparative results.

FIG. 4 shows the results in Example 2 together with the comparison results.

FIG. 5 shows the results of Example 3 together with comparative results.

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI H05B 6/64 H05B 6/64 J (58) Field surveyed (Int.Cl. ⁷ , DB name) A23L 1/00-1 / 01 A23L 3/00-3/01 A47J 27/00 B65D 81/34 H05B 6/64

Claims (4)

(57) [Claims] 1. A liquid food or drink (however, a gel
A liquid food or drink comprising exposing food to be converted to a container and subjecting it to microwave heating,
At least one selected from a top surface, a side surface, and a bottom surface of the container is provided with a rod-shaped protrusion made of a material having a function of collecting microwaves so as to prevent local overheating of the liquid food or drink and perform uniform heating. The above-mentioned heating method, wherein the heating method is arranged so as to protrude from the surface toward the inside of the container. 2. The method according to claim 1, wherein the container is provided at its edge with a lid made of a material that blocks microwaves. 3. A liquid food or drink in a container for heating a microwave oven.
(However, excluding foods that gel by heating) , a rod-shaped projection made of a material having a function of collecting microwaves is provided so as to prevent local overheating of the liquid food or drink and perform uniform heating. The liquid food or beverage, wherein the liquid food or beverage is arranged so as to protrude toward the inside of the container from at least one surface selected from an upper surface, a side surface, and a bottom surface of the container. 4. The liquid food or drink according to claim 3, wherein the container is provided with a lid made of a material that blocks microwaves at an edge thereof.