JPH07100004B2 - Manufacturing method of aseptic packed cooked rice - 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 for producing a sterile packed rice cooked without a rice cooker, which can be immediately heated after being heated in a microwave oven for several minutes and in hot water for ten minutes.

[0002]

2. Description of the Related Art Recently, the problems to be solved by the invention
Cooked cooked cooked rice for one person in a microwave for 2 minutes or in hot water for about 12 minutes to make cooked rice, but cooked cooked rice can be served as it is, but can be served in a bowl. There is. This product, called aseptic packed rice, is not only favored by single people and double-income families, but also has the potential to disuse rice cookers from restaurants.

[0003] Aseptic packed cooked rice can be eaten as delicious as the freshly cooked rice, with the texture of cooked cooked rice being heated in a microwave oven with the cooked cooked cooked rice packed in a serving of one person. Moreover, it has the feature that it can be stored at room temperature for a long time as it is purchased.

Further, since it is possible to save the labor of cooking rice, it is effective for the countermeasure against labor shortage, and the rice can be served immediately even if an unexpected customer comes, and the loss of overcooked rice can be reduced if it is used just before the store is closed. It has the advantage that it can be done and the quality can be kept constant.

As the cooked cooked rice which can be stored for a long period of time, there is already cooked cooked rice in a retort pack, but there is a marked difference in quality as compared with the cooked cooked cooked rice.

[0006] Retort cooked rice is one more cooked cooked rice.
Sterilize under high temperature pressure at 10 to 115 ° C for several minutes. For this reason, the rice is not fluffy, and the starch that gives the umami out of the cooked rice elutes, resulting in a bad taste.

On the other hand, the taste of the aseptic packed cooked rice is remarkably delicious for the following reasons.

Usually, cooked cooked rice deteriorates over time because various bacteria adhering to cooked rice change starch and the cooked rice is oxidized by the air coming into contact with it. This quality deterioration is overcome by the following method.

Since various bacteria are easily attached to the rice bran, the rice bran with various germs is removed as much as possible when the brown rice is polished.

The cooked rice is packed in a sterile room to prevent bacteria from adhering to the product.

When packing cooked cooked rice, an oxygen scavenger is added to remove oxygen remaining between rice grains.

[0012] Although the above measures have been taken, it is still easy for bacteria to adhere during the work of packing cooked cooked rice in a sterile room.

The reason is that it is difficult to maintain a large room in a completely sterile condition, and if various germs are attached to various working clothes worn by workers and various working tools used for packing, it is only that. Sterilization becomes difficult. Further, the oxygen absorber contained in the container must be taken out by peeling off the top seal when heating in a microwave oven, which is troublesome.

The present invention provides a method for producing aseptic packed cooked rice which solves the above drawbacks.

[0015]

The gist of the present invention will be described with reference to the accompanying drawings.

[0016] A soaked rice container 2 having a shape-retaining upper portion formed with a material capable of withstanding rice cooking and having an opening 1 formed thereon is dipped with drained rice 3 and, if necessary, water 4 in an amount suitable for cooking rice. The rice is cooked while being stored and then introduced into the rice cooker 5 that can be pressurized to increase or decrease the degree of pressurization.
Without transferring the cooked cooked rice 6 to the sales container, take it out from the rice cooker 5 as it is and introduce it into the sterile room 7,
A state in which an antibacterial gas such as nitrogen gas or carbon dioxide gas or a mixed gas thereof is introduced into the rice cooking container 2 to replace the air in the rice cooking container 2 with the antibacterial gas, and the rice cooking container 2 is filled with the antibacterial gas. Then, in the sterile room 7, open the opening 1 of the rice cooking container 2 into a film 9
The present invention relates to a method for producing aseptic packed cooked rice, which is characterized by being sealed with.

[0017]

[Example] Fig. 1 shows a conventional example, in which dipping drained rice is put in a rice cooking container, water is subsequently injected, and the rice is introduced into a long tunnel type rice cooker a (about 70 m), and slowly in the tunnel. During the transfer, rice is cooked and steamed, and then it is refilled in the aseptic chamber b with a commercial container c and top-sealed to obtain a product.

In contrast to the conventional method, according to the present invention shown in FIG. 2, for example, a large number of rice cooking containers 2 are placed on a receiving frame 8 which can be stacked in multiple stages, and the rice soaked rice 3 is stored in the rice cooking container 2 and subsequently, The optimum amount of water 4 for cooking rice is poured, and the steam rice cooker 5 that can be pressurized stores the stacks of 20 to 30 receiving frames 8 arranged in multiple rows and stores them in several rows. After cooking, remove from the steam rice cooker 5. Then, the sterilized room 7 is maintained to maintain the sterility as much as possible. In the sterilized room 7, bacteriostatic gas is introduced into the rice cooking container 2 to replace the air in the rice cooking container 2 with the bacteriostatic gas to cook rice. Rice cooker 2 in sterile room 7 with container 2 filled with antibacterial gas
The opening 1 is sealed and sealed.

An example of the preferred embodiment of the present invention will be described.

The first step is a dish-shaped rice cooking container 2 having a shape-retaining property formed by using a material capable of withstanding steam cooked rice and having an opening 1 in the upper part, or a shape-retaining property having an opening 1 in the upper part. The rice cooker 2 in the shape of a bag has soaked drained rice 3 and an amount of water 4 suitable for the rice cooked therein. At this time, as the rice cooking container 2, it is possible to use the rice cooking container 2 formed by adopting a synthetic resin having a heat-resistant and water-resistant barrier property (a property that does not allow passage of oxygen), for example, polypropylene laminated with vinylidene chloride capable of withstanding 120 ° C. desirable.

For example, a well-polished glutinous rice (a small amount of glutinous rice may be mixed to make hardened rice) or a glutinous rice in a bowl of rice in the shape of a boxed lunch for one person, or 1 in water after washing.
An appropriate amount of soaked and drained rice 3 which has been soaked and drained for about a time is stored in a rice cooking container 2, and an optimum amount of water 4 for this rice cooking is poured as needed.

Second step The steam cooked rice is introduced by introducing the rice cooker container 2 containing the washed rice and water into the steam cooker 5 which can be pressurized. It is desirable to arrange many rice cooking containers 2 in a large number and cook a large number of rice at the same time. Fill steam around 102 ° C and heat for about 20 minutes. The temperature inside the steam cooker 5 whose inside is pressurized is set to 102 to 105 ° C., and heating is performed for about 20 minutes. In this case, it was confirmed that when the pressure degree was increased by a predetermined amount and then decreased by a predetermined amount, and the pressure was repeatedly heated and pressurized, the rice was cooked more deliciously. Third step Take the cooked cooked rice 6 into the aseptic chamber 7 together with the cooked rice 2 without removing the cooked cooked rice 6 from the rice cooker 5 into the aseptic chamber 7 without changing it to a sales container, and then use it as nitrogen gas, carbon dioxide gas or a mixed gas thereof. The sterilizing gas is introduced into the rice cooking container 2 to replace the air in the rice cooking container 2 with the sterilizing gas. A synthetic resin film 9 is attached to the upper part of the opening 1 and sealed.
The bacteriostatic gas is preferably a mixed gas of about 20% nitrogen gas and about 80% carbon dioxide gas. At this time, the upper opening 1 is automatically
Synthetic resin film 9 with heat and water resistance barrier
It is desirable to top seal and package in a pack.

[0023]

INDUSTRIAL APPLICABILITY As described above, the present invention cooks cooked rice in comparison with the conventional method in which an operator packs cooked rice in a vending container in an aseptic room, packs an oxygen scavenger therein, and packs it. Instead of transferring the rice to the sales container, directly move the rice cooking container taken out of the rice cooker into the sterile room, introduce antibacterial gas into the rice cooking container to replace the air in the rice cooking container with antibacterial gas, and cook rice. The container is forcibly filled with bacteriostatic gas and is kept as sterile as possible, and the container is sealed and sealed in a sterile room. Since delicious aseptic packed cooked rice is mass-produced at an extremely low cost, and when cooking rice, it is introduced into a rice cooker that can pressurize and the rice is repeatedly cooked by increasing and decreasing the degree of pressurization. When aseptic packed cooked rice is heated in the microwave Always a delicious cooking process for the preparation of sterile pack cooked rice to exert a Xiu the features to be raised.

[0024]

[Table 1]

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a conventional example.

FIG. 2 is an explanatory diagram of the present invention.

FIG. 3 is a perspective view showing a state in which a part of the top seal of aseptic packed cooked rice of the embodiment using the dish-shaped container of the present invention is opened.

[Explanation of symbols]

 1 Opening 2 Rice cooking container 3 Immersion drained rice 4 Water 5 Rice cooker 6 Cooked rice 7 Aseptic chamber 9 Film

Claims (1)

[Claims] 1. A rice cooking container having a shape-retaining property and formed by using a material capable of withstanding rice cooking, and containing the drained rice and, if necessary, an amount of water suitable for cooking rice. , Rice is cooked by introducing it to a rice cooker that can be pressurized and repeatedly increasing and decreasing the pressure, and the cooked rice is cooked as it is without transferring the cooked cooked rice to a sales container. The sterilized room is taken out from the container and introduced into a rice sterilization chamber, and an antibacterial gas such as nitrogen gas, carbon dioxide gas or a mixed gas thereof is introduced into the rice cooking container to replace the air in the rice cooking container with the antibacterial gas, and the bacteria are sterilized in the rice cooking container. A method for producing aseptic packed cooked rice, which comprises sealing the opening of a rice cooking container with a film in a sterile room filled with gas.