JP2000289782A - Heat-resistant glass food preservation sealed-up vacuum container, and method for preserving cooked rice and food for heat-cooking or food to be heated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To seal up a container with inflow of the outside air completely shut off by a method wherein a negative pressure inside the container is transmitted through a gap formed between a partial unevenness at the front end of the container opening and a packing, and thereby the lower leg of the packing is pressed against the external face of the container opening. SOLUTION: A synthetic resin cap 1 having a check valve is put, with a packing 6 made from a rubbery elastic body mounted to the inside of its packing case 2, to an opening 8 of a heat-resistant glass container 3 so that the lower leg 6b of the packing 6 comes into contact with the side 8b of the opening 8 of the container body 3. With the cap 1 pressed and with the inside of the container 3 put under the state of negative pressure with the inside thereof exhausted, the upper leg 6a of the packing 6 is pressed against the side 2c at the base 2a of the packing case with an external pressure P applied thereto, and at the same time a negative pressure inside the container 3 is transmitted through a gap g formed by a partial unevenness at the front end edge 8a which is unavoidably formed when the container 3 is made up, and the lower leg 6b of the packing 6 is pressed against the side 8b of the opening 8, and thereby inflow of the outside air is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum-sealed food container suitable for storing cooked cooked rice, cooked food, food to be cooked, etc. in a vacuum-sealed state for a long period of time, and a method of storing these foods. It is.

[0002]

2. Description of the Related Art Conventionally, as a food storage container of this kind,
For example, it is generally known that a lid made of a soft resin is attached to a container body made of a synthetic resin called tupperware (trade name) by fitting to a peripheral portion thereof. Further, there is a container in which a lid made of a soft resin is fitted to a glass container body in a tapper manner.

In addition, Japanese Patent Publication No. Hei 3-8750 by the present applicant.
And synthetic resin disclosed in Japanese Patent Publication No. 4-73980 and the like have already been disclosed.

[0004]

However, recently,
Bisphenol A, which causes environmental hormone problems, and elutes in trace amounts from polycarbonate resin food containers
There has been some debate over whether it may affect the human body.
In spite of the fact that there is no demonstration of the effects of these resin materials on the human body, there has been a request to convert the container part that comes into contact with food to glass by the tide without using it. Therefore, as a glass container that can be used as a vacuum-sealed storage container for food, a microwave-permeable glass that can be heated in a microwave oven and has heat resistance, cold resistance, rapid cooling resistance, and pressure resistance must be used.

[0005] The above-mentioned heat-resistant glass container is manufactured by a press method using a mold. However, the height of the front end edge of the container opening cannot be assured due to the manufacturing method. . In order to remove the burrs generated in the parting part of the cavity type and plunger type by flame treatment (fire polish) at the time of press molding and remove the burrs, a so-called who occurs. Since it is unavoidable that irregularities occur partially over the entire periphery of the opening front end edge, a partial gap is created over the entire periphery between the front end edge and the packing, and the lid and the glass body form the packing. There is a problem that the container cannot be hermetically closed because the container does not contact airtightly.

As shown in FIG. 8, a conventional vacuum-sealed storage container comprises a packing 2 made of rubber or a rubber-like elastic body in a packing case 22 connected to the periphery of a lid 21 made of synthetic resin.
6, the container body is also made of synthetic resin, but there is no problem. However, when the container body 3 is made of heat-resistant glass, there is the problem as described above.

FIGS. 9 (a) and 9 (b) are shown to point out problems when using a glass container body. In the case of a glass container, FIGS. FIG.
As shown in (b), it is unavoidable that a partial gap g is locally formed over the entire circumference at the leading edge 8a of the opening 8 of the container body 3 due to the manufacturing method. Even if pressure is applied to the lid 1 in this state, outside air flows in from the gap g and the container cannot be sealed. In addition, since the gap g has a small pressing force between the packing case and the packing at the point g ', the outside air may flow from the gap g' between the packing case 22 and the packing 26. Therefore, even if the lid 1 is pressed in this state and the gas in the container is to be exhausted from the vent hole 5, the outside air flows in from the gaps g and g 'and the inside of the container is not in a negative pressure state, so that the container is closed. It is not possible.

It is an object of the present invention to provide a food vacuum sealed storage container which overcomes the above-mentioned problems by using heat-resistant glass from which environmental hormone substances do not elute as a container body.

[0009]

Means for Solving the Problems In order to solve this problem, the food sealed storage container of the present invention is characterized by heat resistance, cold resistance, quenching resistance, pressure resistance and microwave transmission. A heat-resistant glass container body having a heat-resistant, cold-resistant, synthetic resin lid having microwave permeability and a perforated hole and an opening. The lid has a gas (air, air, A non-return valve made of a heat-resistant and cold-resistant rubber or rubber-like elastic body, which is configured to unilaterally flow out of the container through the vent hole and prevent the outside air from re-introducing, is attached to the opening. And a packing case continuously provided on the periphery of the lid, wherein heat resistance,
A packing made of a cold-resistant rubber or rubber-like elastic body is attached, and the packing is formed with upper and lower legs, and the upper leg of the packing is formed in two grooves formed around the periphery of the base of the packing case. The packing case is fitted so that a pseudo hollow portion is formed by the base of the packing case, and one of the grooves in the packing case is provided with a small ventilation groove extending from the hollow portion to the inside of the container at an even interval around the periphery. By attaching the lid to the container main body, the lower leg of the packing and the side of the opening of the container main body are brought into contact with each other, and the engagement position between the lid and the container main body is provided. When the inside of the container is in a negative pressure state, the upper leg portion is pressed all around the side of the packing case base to seal the inflow of outside air, and at the same time, The lower leg extends all around the side of the opening of the container body It is an Abstract that attached to and sealed to as configured for sealing the inflow of outside air.

When a pressure is applied to the center of the lid of the storage container constructed as described above, there is a pseudo-hollow portion. Therefore, even if there is unevenness at the leading edge of the opening, the pressing portion of the packing is substantially formed over the entire circumference. At the same time that the gasket is pressed uniformly, the lower leg of the packing presses against the side of the container body opening, and the gas in the pseudo hollow portion is compressed and transmitted into the container through the small ventilation groove, and passes with the compressed gas in the entire container. The check valve is pushed up through the pores to be discharged to the outside, and if the lid is stopped pressing, the check valve immediately closes the ventilation hole and the inside of the container is under negative pressure. At the same time, the outer pressure is applied to the lower leg of the packing at the same time as being pressed all the way to the side of the base of the case, and the outer pressure is pressed all the way to the side of the opening of the container body to seal the inflow of outside air. Solves the problem because it is sealed It can be.

Further, as described in claim 2, a heat-resistant glass container body having heat resistance, cold resistance, rapid cooling resistance, pressure resistance and microwave permeability, and a heat-resistant glass body having ventilation holes and openings formed therein.
A lid made of a synthetic resin having a microwave resistance and a microwave resistance that is cold-resistant, and the lid has a top surface that allows the gas in the container to flow out of the container only unilaterally through the vent hole and to re-enter the outside air. A check valve made of a heat-resistant, cold-resistant rubber or rubber-like elastic body, which is configured to prevent the heat from being attached to the opening, and a packing case provided continuously with a peripheral edge of the lid; A packing made of a heat-resistant and cold-resistant rubber or rubber-like elastic body and having a required hardness and thickness is attached. The packing is formed with an upper leg portion and a lower leg portion, and formed around the periphery at the base of the packing case. The upper leg portion of the packing is fitted and fixed in the one groove formed, and the lower leg portion of the packing and the side portion of the opening of the container body are loosely contacted when the lid is attached to the container body. The position of engagement between the lid and the container body When the inside of the container is in a negative pressure state, the upper leg portion is pressed all around the side of the packing case base to seal the inflow of outside air, and at the same time, the lower leg portion The gist of the invention is that it is configured so as to be pressed all over the side of the opening of the container body to seal the inflow of outside air and to seal the container.

When pressure is applied to the central portion of the lid of the storage container having the above-described structure, the packing has the required hardness and thickness. At the same time, the lower leg of the packing presses against the side of the opening of the container body at the same time as it is pushed almost uniformly over the entire circumference, and the compressed gas in the entire container pushes up the check valve through the vent hole to the outside. When the lid is released and the pressing of the lid is stopped, the check valve immediately closes the ventilation hole and the container is in a negative pressure state, so external pressure acts on the upper leg of the packing and the entire circumference of the side of the base of the packing case At the same time, the external pressure acts on the lower leg of the packing at the same time, and is pressed all the way to the side of the opening of the container body to seal the inflow of the outside air and solve the problem because the container is sealed. be able to.

[0013] The method for preserving cooked rice immediately after cooking according to the present invention is as described in claim 3 or 2.
Use the heat-resistant glass food vacuum sealed storage container described above to hot-fill rice cooked immediately after cooking, or heat it for a required time in a microwave oven after filling, then press on the lid to expand the container. Most of the gas that has been pushed up the check valve through the vent hole is discharged to the outside, and if the pressing is stopped, the check valve immediately closes the vent hole, the inside of the container becomes negative pressure, and the container is sealed,
The gist of the present invention is to cool and refrigerate the container so that the inside of the container is kept under a high vacuum and completely shut off from the outside.

Further, the method for preserving cooked foods and foods to be heated according to the present invention uses the heat-resistant glass food vacuum sealed storage container according to claim 1 or 2 as described in claim 4. Filling the cooked food hot or filling the food to be heated and microwave heating it in a microwave oven,
The food in the container is heat-sterilized from the inside, and at the same time, the expanded air in the head space is discharged from the vent hole under the check valve and the space between the lid and the container body together with water vapor generated rapidly from the food moisture and cooking moisture. Then, if the lid is removed from the microwave oven and pressure is applied to the lid, the gas in the container further pushes up the check valve through the air hole and is discharged to the outside, and if the pressing is stopped, the check valve immediately closes the air hole and the inside of the container is closed. The gist of the present invention is to store the container and its contents by cooling and refrigeration by creating a negative pressure and thereby completely shutting off the inside of the container by applying a high vacuum to the outside world.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a heat-resistant glass food vacuum sealed storage container (hereinafter referred to as a storage container) of the present invention, a method of storing cooked rice using the same, cooking of cooked food and cooking of heated food will be described. Embodiments of the preservation method will be described with reference to the drawings.

FIG. 1 is an overall sectional view of a storage container according to claim 1 of the present invention. FIG. 2A is a cross-sectional view showing an engagement state between the packing of FIG. 1 and a front end edge of the container main body opening, and FIG. 2B is a cross-sectional view taken along the line AA of FIG. . FIG. 3 is a cross-sectional view showing an engagement state between the packing shown in FIG. 1 and a front end edge of the container body opening. FIG. 4 is a cross-sectional view for explaining a state when the lid 1 is pressed.

First, the heat-resistant glass food vacuum sealed storage container of claim 1 will be described.
A heat-resistant, cold-resistant, quenching-resistant, heat-resistant glass container body 3 having microwave permeability through pressure resistance, and a heat-resistant, cold-resistant synthetic resin lid having microwave permeability through holes 5 and openings 7. The lid 1 has a heat-resistant, cold-resistant rubber or rubber-like elastic material on its upper surface which is configured to allow gas in the container to flow out of the container only through the vent hole 5 and to prevent re-inflow of outside air. A check valve 4 made of a body and a packing 6 made of heat-resistant and cold-resistant rubber or rubber-like elastic material are mounted in a packing case 2 connected to the periphery of the lid 1. The valve 4 is formed in an umbrella shape, and the valve shaft is inserted into the opening 7 from the front so as to be freely movable, prevented from being pulled out from the opening 7 by the retaining ring 4a, covered with the ventilation hole 5 and closed. Double groove 2 formed in base 2a of packing case 2
b, 2b ', the upper leg portions 6a, 6a' of the packing 6 are fitted so that the base portion 2a of the packing case 2 and the packing 6 constitute a pseudo hollow portion s. In the concave groove 2b ', several small ventilation grooves 9 communicating from the hollow portion s into the container are provided at equal intervals around the periphery, and the lid 1 is attached to the container body 3,
This is a container configured such that the lower leg portion 6b of the packing 6 and the side portion 8b of the opening 8 of the container body 3 are brought into contact with each other to regulate the engagement position between the lid 1 and the container body 3.

When a pressure is applied to the central portion of the lid 1 of the storage container having such a configuration, the pseudo hollow portion s is formed.
As shown in FIGS. 2 (a) and 2 (b), the lower leg portion 6b of the packing 6 is pushed substantially uniformly over the entire circumference, and at the same time, moves from the state shown in FIG. 3 in the direction shown by the broken line in FIG. Movement,
At the same time, the gas in the pseudo hollow portion s is compressed and transmitted to the container through the small ventilation hole 9, and is compressed together with the compressed gas in the entire container.
When the check valve 4 is pushed up to be discharged to the outside and the pressing of the lid 1 is stopped, the check valve 4 immediately closes the ventilation hole 5,
Since the inside of the container is in a negative pressure state, as shown in FIG.
External pressure P acts on the upper leg 6a of the packing case base 2
Similarly, the external pressure P acts on the side 2c of the container a and the lower leg 6b of the packing 6 at the same time, and is pressed to the side 8b of the container main body opening 8 over the entire circumference to seal the inflow of outside air. Because it is sealed, it can exhibit a good function as a food sealed storage container.

FIG. 5 is an overall sectional view of a storage container according to claim 2 of the present invention. FIG. 6 is a cross-sectional view showing an engagement state between the packing shown in FIG. 1 and the front end edge of the container main body opening. FIG. 7 is a cross-sectional view for explaining a state when the lid 1 is pressed.

Next, the vacuum-sealed storage container for heat-resistant glass food according to claim 2 will be described.
A heat-resistant glass container main body 3 having microwave permeability through resistance to cold, quenching, and pressure, and a lid 1 made of heat-resistant, cold-resistant synthetic resin having microwave permeability and having perforated holes 5 and openings 7. The lid 1 is made of a heat-resistant and cold-resistant rubber or rubber-like elastic material which is configured to allow gas in the container to flow out of the container only through the vent hole 5 on the upper surface thereof and to prevent re-inflow of outside air. A check valve 4 constructed and a packing 6 made of a heat-resistant and cold-resistant rubber or rubber-like elastic body are mounted in a packing case 2 connected to the periphery of the lid 1. Is formed in an umbrella shape, the valve shaft is inserted into the opening 7 from the front side, and is freely movable, is prevented from being pulled out from the opening 7 by the retaining ring 4a, is covered with the ventilation hole 5 and is closed, and the packing case is provided. The upper leg portion 6 of the packing 6 is inserted into a single groove 2b formed in the base portion 2a. Is fitted in the packing case 2 and the lid 1 is attached to the container body 3, so that the lower leg portion 6 b of the packing 6 and the side portion 8 b of the opening 8 of the container body 3 are loosely connected. Thus, the container is configured to regulate the engagement position between the lid 1 and the container body 3.

When pressure is applied to the central portion of the lid 1 of the storage container constructed as described above, the 6c portion of the packing 6 having the required hardness and thickness even if the opening end edge 8a has irregularities,
At the same time, the lower leg 6b of the packing 6 is pushed in substantially uniformly over the entire circumference, moves from the state shown in FIG. 6 to the direction shown by the broken line in FIG. 7, and presses against the side surface 8b of the container body opening 8. When the pressing of the lid 1 is stopped, the check valve 4 immediately closes the ventilation hole 5 and the inside of the container is in a negative pressure state, so that the external pressure P acts on the upper leg 6a of the packing 6 as shown in FIG. External pressure P acts on the side 2c of the base 2a of the case and simultaneously on the lower leg 6b of the packing 6, and is pressed all the way around the side 8b of the container body opening 8 to seal the inflow of outside air. Since the container is hermetically sealed, it can exhibit a good function as a food sealed storage container.

Next, a method for storing cooked rice immediately after cooking will be described. Cooked rice is mainly made of starch and has a large amount of water, so that it is easily degraded. 1g of rice just after cooking
Although middle bacillus spore-forming bacteria are considered ¹⁰ 2 to 10 ^3,
It is said that when the temperature is high from about 12 hours later, the temperature starts to increase, and in summer, it becomes 10 ⁷ to 10 ⁸ / g within 10 hours or more, and it is said to lose edibility. Furthermore, the bacteria that grow on cooked rice are limited to the aerobic spore bacterium Bacillus, and the sterilization method for pack rice of a general food manufacturer can be reduced to 10 / g or less by retort sterilization at 122 ° C for 30 minutes. It is said that the bacteria died and the number of bacteria did not increase even after 30 days at 30 ° C., and no change in taste was observed. However, there are reports that some browning was observed in appearance, that rice was adhered to the container, and that individual rice grains were hard to separate.

In the present invention, in order to preserve cooked rice in a good condition, the following is performed. Bacterium growing on cooked rice is aerobic sporangiospore spore bacillus Bacillus
Is limited to The spores of Bacillus spore bacterium have remarkably high heat resistance, and if the bacteria are to be killed by heating, the quality of cooked rice is reduced as described above. The growth of Bacillus spores can be stopped under low-temperature (5 ° C.) storage. Since Bacillus spore bacilli are aerobic bacteria, growth can be stopped by vacuum-sealing the container.

Taking advantage of these points, filling the rice just after cooking, applying pressure to the lid 1 to discharge the expanded gas in the container, and stopping the depressurization after degassing, the container is in a negative pressure state. When the container is cooled and refrigerated, the inside of the container is further vacuumed and the oxygen concentration in the container becomes extremely low. It is possible to store in a good state for a long period of time without being bacterially proliferated. The rice cooked in this way has almost no deterioration in quality, and even after one month, it can be almost returned to a freshly cooked state by reheating in a microwave oven.

In this case, it is desirable to fill the cooked rice as soon as possible. Also, if necessary, after filling the rice immediately after cooking, heating in a microwave oven for a shorter time will discharge air and water vapor remaining between the rice grains and at the same time raise the temperature inside the container. If it is sealed, its preservation effect can be further enhanced.

Next, a method for storing cooked food and food to be heated will be described. Hot-fill the food cooked in the storage container immediately above or food that has passed some time,
Also, even if there is some bacterial contamination such as when partially filling the food to be heated such as raw vegetables, if this is heated for a required time in a microwave oven, the food is heated from the inside in a short time and sterilized. At the same time, the expanded air and gas in the head space together with the water vapor generated from the food moisture and cooking moisture are discharged out of the container and degassed.Then this is removed from the microwave oven, the lid is pressed, and the lid is further pressed from the check valve. If the container is evacuated and closed to a negative pressure, and the container and the content food are cooled and refrigerated, the inside of the container becomes a high vacuum and the food can be safely stored under aseptic conditions.

Example 1 A 550 ml heat-resistant glass container constructed according to the present invention was filled with cooked rice immediately after cooking, heated in a microwave oven for 30 seconds, sealed, allowed to cool to room temperature, and cooled to 5 ° C. After 30 days of refrigerated storage, the mixture was heated in a microwave oven for 3 minutes in a vacuum-sealed state, and the check valve was lifted up and opened, and this was sampled. However, the taste was almost cooked and the same taste was maintained.

(Embodiment 2) Similarly, the curry immediately after cooking is hot-filled in a storage container (89 ° C.) and placed in a microwave oven.
After heating for 0 seconds, boiling began. Stop heating, press the lid tightly, seal it, let it cool to near room temperature, refrigerate at 5 ° C for 10 days, then heat it for 5 minutes in a microwave oven, and tasted it. Because it was in a state, it had an aging effect and was extremely delicious.

[0029]

According to the manufacturing method of the heat-resistant glass container, it is unavoidable that a partial gap is generated between the packing and the packing due to the height of the end of the container opening. This makes it possible to seal the inflow of outside air.

In addition, due to the properties of glass that has no porosity and does not transmit gas or liquid, it seems that the taste of the sensory test is better than that of a container made of resin, for example, when cooked rice is stored. Impossible.

[Brief description of the drawings]

FIG. 1 is an overall sectional view of a heat-resistant glass food vacuum storage container according to an embodiment of the present invention.

2A is a cross-sectional view showing an engagement state between the packing of FIG. 1 and a front end edge of a container body opening, and FIG. 2B is a cross-sectional view taken along line AA of FIG. .

FIG. 3 is a cross-sectional view for explaining an engagement state between the packing shown in FIG. 1 and a front end edge of a container body opening.

FIG. 4 is a cross-sectional view for explaining the movement of the packing when pressure is applied to the lid 1 and a state where an external pressure P acts on the packing at that time in the cross-sectional view shown in FIG.

FIG. 5 is an overall sectional view of a heat-resistant glass food vacuum storage container according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view for explaining an engagement state between the packing shown in FIG. 5 and a front end edge of the container body opening.

7 is a cross-sectional view for explaining the movement of the packing when pressure is applied to the lid 1 and the state where an external pressure P acts on the packing at that time in the cross-sectional view shown in FIG. 6;

FIG. 8 is a sectional view of a sealed storage container using a conventional packing.

9A is a side view showing an engagement state between the packing of FIG. 5 and a front end edge of the container main body opening, and FIG. 9B is a cross-sectional view thereof.

[Explanation of symbols]

 Reference Signs List 1 lid 2 packing case 2a base 2b concave groove 2b 'concave groove 2c side 3 container main body 4 check valve 4a retaining ring 5 ventilation hole 6 packing 6a leg 6a' upper leg 6b lower leg 6c pressing part 7 opening 8 container Body opening 8a Opening tip edge 8b Side 9 Small ventilation groove s Pseudo hollow part g Gap g 'Gap 21 Lid 22 Packing case 26 Packing P External pressure

Claims (4)

[Claims] 1. A heat-resistant glass container body having heat-resistance, cold-resistance, quenching-resistance, and pressure-resistance and having microwave permeability, and a synthetic resin having heat- and cold-resistance and microwave-permeability having perforated holes and openings. And a lid made of a heat-resistant, cold-resistant material that is configured to prevent the gas in the container from flowing out of the container only unilaterally through the ventilation holes on the upper surface thereof and to prevent the outside air from re-entering. A check valve made of rubber or rubber-like elastic body is attached to the opening, and a packing case connected to the periphery of the lid is provided, and a heat-resistant, cold-resistant rubber or rubber-like elastic body is provided inside the packing case. An upper leg portion and a lower leg portion are formed in the packing, and the upper leg portion of the packing is fitted into two concave grooves formed around the periphery at the base of the packing case. Pseudo hollow part is constituted by base In one of the grooves in the packing case, there are provided a plurality of small ventilation grooves at regular intervals around the periphery from the hollow portion to the inside of the container, and a lid is attached to the container body. Thereby, the lower leg of the packing and the side of the opening of the container body are brought into contact with each other to regulate the engagement position between the lid and the container body, and the inside of the container is in a negative pressure state. When this happens, the upper leg is pressed all the way to the side of the packing case base to seal the inflow of outside air, while the lower leg is pressed all the way to the side of the opening of the container body. A heat-resistant glass food vacuum sealed storage container characterized by being constructed so as to seal the inflow of outside air. 2. A heat-resistant, cold-resistant, quenching-resistant, pressure-resistant, microwave-permeable, heat-resistant glass container body and a heat-resistant, cold-resistant, microwave-permeable synthetic resin having perforated holes and openings. And a lid made of a heat-resistant, cold-resistant material that is configured to prevent the gas in the container from flowing out of the container only unilaterally through the ventilation holes on the upper surface thereof and to prevent the outside air from re-entering. A check valve made of rubber or rubber-like elastic body is attached to the opening, and a packing case connected to the periphery of the lid is provided, and a heat-resistant, cold-resistant rubber or rubber-like elastic body is provided inside the packing case. And a packing having the required hardness and thickness. The packing is provided with an upper leg portion and a lower leg portion, and the upper leg portion of the packing is formed in a single groove formed around the periphery of the base of the packing case. Part is fixed by inserting When the lid is attached to the container, the lower leg of the packing and the side of the opening of the container main body are in gentle contact with each other, so that the engagement position between the lid and the container main body is substantially regulated. When the inside of the container is in a negative pressure state, the upper leg is pressed all around the side of the packing case base to seal the inflow of outside air, and at the same time, the lower leg is at the side of the opening of the container body. A heat-resistant glass food vacuum sealed storage container characterized in that the container is sealed so as to be pressed over the entire circumference to seal the inflow of outside air. 3. Using the heat-resistant glass food vacuum sealed storage container according to claim 1 or 2, hot-fill rice cooked immediately after cooking, or heat it in a microwave oven for a required time after filling. If a pressure is applied to the lid, most of the inflated gas in the container pushes up the check valve through the air hole and is discharged to the outside, and if the pressing is stopped, the check valve immediately closes the air hole and the container is negative. A method of preserving cooked rice immediately after cooking, wherein the container is sealed under pressure, and the container is cooled and refrigerated so that the inside of the container is kept under a high vacuum and completely shut off from the outside world. 4. A hot-sealed food or a heated food is filled using the heat-resistant glass food vacuum-sealed storage container according to claim 1 or 2, and the heated food is filled in a microwave oven. Microwave heating is performed to heat and sterilize the food in the container from the inside, and at the same time, to expand the air in the head space together with the water vapor of the food and the water vapor generated sharply from the cooking water. The gas in the container is further pushed up the check valve through the ventilation hole and discharged to the outside, and if the pressing is stopped, the check valve immediately opens the ventilation hole. The cooking is characterized in that the container is closed, the inside of the container becomes negative pressure, and the container is sealed, and the container and its contents are cooled and refrigerated. Food, Preservation method of food to be heated.