JP2010047321A - Method for manufacturing mineral water filled in pet bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture mineral water filled in PET bottles using an aseptic filling method using a peracetic acid-based sterilizing agent as a sterilizing method for a PET bottle. <P>SOLUTION: A manufacturing method for the mineral water is as follows. The PET bottle is sterilized for a sterilization time of 5 to 10 seconds with (1) the peracetic acid-based sterilizing agent with a hydrogen peroxide concentration in the range more than 0.5% and not more than 1% and a liquid temperature in the range of more than 40°C and not more than 50°C, or (2) the peracetic acid-based sterilizing agent with a hydrogen peroxide concentration in the range of more than 1% and not more than 1.5% and a liquid temperature in the range of 20 to 40°C, and then the PET bottle is washed with aseptic washing water with water temperature in the range of 65 to 95°C. The washed PET bottle is filled with sterilized mineral water and is sealed with a sterilized cap. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method for producing PET bottled mineral water.

  As a sterilization method for PET bottles, a sterilization method using a peracetic acid type disinfectant that is a mixed medicine of hydrogen peroxide, peracetic acid, and acetic acid is used. The PET bottled beverage manufacturing method, in which a beverage such as milk coffee sterilized or sterilized with a bottle is sealed and the bottle is sealed with a sterilized cap, is currently generally used as a method for manufacturing PET bottle aseptic filled beverages. . As an example, Patent Document 1 can be cited.

  However, the PET bottle aseptic filling method using a peracetic acid-based disinfectant as the PET bottle sterilization method is not used at all when the contents are mineral water. When peracetic acid-based disinfectants are used to sterilize bottles, food hygiene law requires that hydrogen peroxide in peracetic acid-based disinfectants is not detected in products. In the case of beverages other than water, such as coffee, hydrogen peroxide in the peracetic acid-based disinfectant reacts with the packed contents and decomposes and is not detected in the product. In this case, since there is no content that reacts with hydrogen peroxide and decomposes it, a trace amount of hydrogen peroxide remains in the product as long as normal peracetic acid disinfectants are used in the usual manner. It is because it cannot escape.

  Therefore, when manufacturing a PET bottle-packed mineral water by an aseptic filling method, a dedicated line for filling mineral water is constructed, and as a sterilization method for PET bottles, warm water or alkali is used for sterilization.

Japanese Patent No. 3080347

  In the manufacturing method of the PET bottled mineral water by the above conventional aseptic filling method, a production line dedicated to mineral water is constructed. It cannot be used for manufacturing. Moreover, the production line for filling a neutral beverage that has been conventionally used cannot be diverted to a mineral water filling line. Therefore, it would be extremely convenient if the neutral beverage production line that had been used in the past could be used as it was for the aseptic filling of PET bottled mineral water without constructing a new production line dedicated to mineral water. It is highly desirable to develop a technology that enables this.

  The present invention has been made in view of the above problems in the conventional PET bottled mineral water manufacturing method, and uses an aseptic filling method using a peracetic acid-based disinfectant as a PET bottle sterilization method. By making it possible to produce a stuffed mineral water, it is intended to provide a method for producing a PET bottled mineral water that enables the production line to be used as a production line for other beverages such as neutral beverages. is there.

  In order to achieve the above object, the present inventor has conducted extensive research and experiments. When PET bottles are sterilized and washed by adjusting the concentration, the temperature of the sterilizing agent and the temperature of the sterilized washing water within a certain range, and reducing the concentration to below a certain very low value, the hydrogen peroxide Surprisingly, it was discovered that hydrogen peroxide was not detected in PET bottled mineral water products due to the combination of concentration, bactericide temperature and sterile wash water temperature, and reached the present invention.

That is, in the method for producing a PET bottled mineral water according to claim 1, which achieves the above object, the hydrogen peroxide concentration is in the range of more than 0.5% and less than 1%, and the liquid temperature exceeds 40 ° C and 50 ° C. After the PET bottle is sterilized with a peracetic acid-based disinfectant within the following range with a sterilization time of 5 seconds to 10 seconds, the PET bottle is cleaned with aseptic cleaning water whose water temperature is in the range of 65 ° C to 95 ° C, and after cleaning The PET bottle is filled with sterilized mineral water and sealed with a sterilized cap.

The method for producing a PET bottled mineral water according to claim 2, wherein the hydrogen peroxide concentration is in the range of more than 1% and not more than 1.5% and the liquid temperature is in the range of 20 ° C to 40 ° C. A PET bottle is sterilized with a sterilizing time of 5 seconds to 10 seconds with a disinfectant, and then the PET bottle is washed with aseptic washing water whose water temperature is in the range of 65 ° C to 95 ° C. Filled with water and sealed with a sterilized cap.

  According to the present invention, hydrogen peroxide is not detected by measurement using the protector method, which is a standard measurement method used for detection of hydrogen peroxide in packaged beverage products, and a peracetic acid-based disinfectant PET bottles can be sterilized using PET, and therefore, the bottle sterilization process and filling environment of the PET bottled mineral water production line can be sterilized without changing the line to barley tea beverages other than mineral water, coffee beverages, and milk. It can also be used for the production of neutral beverages such as beverages.

It is a schematic diagram which shows the manufacturing method of PET bottled mineral water.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
The peracetic acid-based disinfectant used in the method of the present invention is a mixed disinfectant composed mainly of three components of hydrogen peroxide, peracetic acid and acetic acid. As for the composition ratio of the three components, those with various composition ratios are commercially available, but the component that exhibits the bactericidal effect in this bactericidal agent is peracetic acid, and hydrogen peroxide is added as a stabilizer. In order to prevent the hydrogen peroxide from being detected while sufficiently providing the bactericidal effect, it is preferable that the ratio of hydrogen peroxide / peracetic acid is as small as possible. From such a viewpoint, TOYO-aktiv manufactured by Toyo Seikan Co., Ltd. among commercially available peracetic acid-based disinfectants contains 15% hydrogen peroxide, 10% peracetic acid, and 25% acetic acid. Is a preferable peracetic acid-based fungicide because of its relatively small ratio of 1.5.

  The combination of the hydrogen peroxide concentration in the peracetic acid-based disinfectant that achieves the object of the present invention and the disinfectant liquid temperature is (1) the hydrogen peroxide concentration is 0.5% or less, and the liquid temperature is 30 ° C. to 50 ° C. (2) The hydrogen peroxide concentration is in the range of more than 0.5% and 1% or less, and the liquid temperature is 30 ° C. to 40 ° C., (3) The hydrogen peroxide concentration is in the range of more than 0.5% and 1% or less. (4) Hydrogen peroxide concentration is more than 1% and 1.5% or less, and the liquid temperature is 20 ° C to 40 ° C. (5) Peroxidation There are five types of combinations in which the hydrogen concentration is in the range of more than 1% and 1.5% or less, and the liquid temperature is in the range of more than 40 ° C. and 50 ° C. or less. However, in the case of (1) and (2), the temperature of the washing water used for washing with aseptic washing water after sterilization is not affected by any temperature from room temperature to the heat resistant temperature of the PET bottle. In the case of (3) and (4), the temperature of the sterile cleaning water is 65 to 95 ° C, and in the case of (5), the temperature of the sterile cleaning water is 85 ° C to 95 ° C. As a result of experiments, hydrogen peroxide was detected in the product.

As shown in FIG. 1, the PET bottle is sterilized, washed, filled with mineral water, and sealed as shown in FIG. Here, the sterile closed space is a sealed space that surrounds a part of the working chamber provided with an entrance for carrying in the container, and a positive pressure of sterile air is introduced into the sealed space so as to maintain the sterile condition. It is desirable to use a space in which aseptic conditions of class 100 or less are obtained by laminar flow control over the entire space or the clean room. Furthermore, if possible, it is preferable to surround the entire sterile closed space with an external environment control space in which the external environment is maintained to be somewhat clean or a class 10,000 clean room.
As a PET bottled mineral water production line, a conventionally used neutral drink production line such as milk coffee can be used.

  This production line is used to sterilize PET bottles under the above conditions. As a method for applying the peracetic acid-based disinfectant to the PET bottle, a normal method in which the disinfectant is sprayed on the inner and outer surfaces of the bottle with a spray nozzle can be used.

  After the bottle has been sterilized, the bottle is washed with aseptic water and then sent to a filler provided in a sterile closed space under the same conditions as described above, and the bottle is filled with sterilized mineral water. The bottle filled with mineral water is transferred to a capper provided in a sterile closed space under the same conditions as described above, sealed with a sterilized cap, and then discharged out of the sterile closed space as a product.

  Test whether hydrogen peroxide is detected in ion-exchanged water filled after sterilization of PET bottle with peracetic acid-based disinfectant using 500 ml PET bottle as test bottle and ion-exchanged water as filling water did. As the peracetic acid-based fungicide, TOYO-aktiv was diluted 50 times, and hydrogen peroxide was added to the diluted solution to adjust each concentration. The sterilization conditions with the sterilization solution were 120 ml / second, the sterilization conditions with sterile cleaning water were 110 ml / second, and the cleaning time was 5 seconds. The measurement of the residual hydrogen peroxide was carried out by the orientator method using a super orienter model 5 manufactured by Oriental Yeast Co., Ltd. after storing the filled PET bottle at room temperature for 24 to 48 hours. The results are shown in Table 1 below. The numerical value below the washing temperature (such as 30 ° C.) indicates the concentration (ppm) of residual hydrogen peroxide.

In addition, after inoculating the bacteria of bottle 10 ⁶ cfu / bottle and treating in the above steps, the number of bacteria remaining in the bottle was measured to confirm the bactericidal effect. It was.

Claims (2)

PET bottles with a sterilization time of 5 to 10 seconds with a peracetic acid disinfectant whose hydrogen peroxide concentration is in the range of more than 0.5% and less than 1% and the liquid temperature is in the range of more than 40 ° C and less than 50 ° C. After sterilizing the PET bottle, wash the PET bottle with sterile washing water whose water temperature is in the range of 65 ° C to 95 ° C, fill the PET bottle after washing with sterilized mineral water, and seal with a sterilized cap. A method for producing a PET bottled mineral water characterized by the following. Sterilizing the PET bottle in sterilizing time 5 seconds to 10 seconds by peracetic acid-based disinfectant is hydrogen peroxide concentration is located the liquid temperature in the range of 1.5% or less than 1% in the range of 20 ° C. to 40 ° C. After that, the PET bottle is washed with aseptic washing water whose water temperature is in the range of 65 ° C. to 95 ° C., and the washed PET bottle is filled with sterilized mineral water and sealed with a sterilized cap. A manufacturing method of PET bottled mineral water.

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