JPS6349163A - Microwave heating sterilization method - Google Patents
Microwave heating sterilization methodInfo
- Publication number
- JPS6349163A JPS6349163A JP61192276A JP19227686A JPS6349163A JP S6349163 A JPS6349163 A JP S6349163A JP 61192276 A JP61192276 A JP 61192276A JP 19227686 A JP19227686 A JP 19227686A JP S6349163 A JPS6349163 A JP S6349163A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heated
- microwave
- microwaves
- sterilization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001954 sterilising effect Effects 0.000 title claims description 28
- 238000004659 sterilization and disinfection Methods 0.000 title claims description 28
- 238000010438 heat treatment Methods 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 20
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 235000015067 sauces Nutrition 0.000 description 1
Landscapes
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Apparatus For Disinfection Or Sterilisation (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はマイクロ波による食品、医薬品等の加熱殺菌方
法に関するものであり、特に加熱温度が持することがで
きるマイクロ波加熱殺菌方法に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for heat sterilization of foods, medicines, etc. using microwaves, and particularly relates to a method for heat sterilization using microwaves that can maintain a heating temperature. be.
マイクロ波照射による加熱殺菌は既に周知であるが、マ
イクロ波加熱は、マイクロ波照射？停止した時点から被
加熱物の温度が低下し始め、またマイクロ波照射？続け
ると温度が上昇し続けるという欠点があり、被加熱物の
温度？マイクロ波加熱以外の加熱手段？用いずに殺菌温
度に一定時間保持することは極めて困難である。Heat sterilization by microwave irradiation is already well known, but is microwave heating actually microwave irradiation? The temperature of the heated object starts to drop from the moment it stops, and the microwave irradiation starts again? If you continue, the temperature will continue to rise, and the temperature of the heated object will increase. Heating methods other than microwave heating? It is extremely difficult to maintain the sterilization temperature for a certain period of time without using it.
マイクロ波照射により温度保持を行う方法としては実公
昭６０−８７１０号公報や特公昭６〇−５８６６９号公
報等が報告されているが、これらの方法は被加熱物の温
度が殺菌温度に達した後。Methods of maintaining temperature by microwave irradiation have been reported in Japanese Utility Model Publication No. 60-8710 and Japanese Patent Publication No. 60-58669, but these methods do not allow the temperature of the heated object to reach the sterilization temperature. rear.
マイクロ波出力乞低下させて照射を行う方法である。This is a method in which irradiation is performed by lowering the microwave output.
上記方法により温度保持２行う場合、被加熱物がマイク
ロ波乞吸収し易い物質であれば、マイクロ波の出力を低
下させるとマイクロ波は全て被加熱物表面で吸収され、
中心部をマイクロ波で加熱することが出来ない。さらに
加熱方法が連続加熱である。その為、温度保持中は表面
のみがマイクロ波で加熱され、中心部は熱伝導による加
熱となり、マイクロ波加熱の特徴を殺すとともに、場合
によっては表面と中心部でかなりの温度差が生じること
もある。When temperature maintenance 2 is performed using the above method, if the object to be heated is a material that easily absorbs microwaves, all of the microwaves will be absorbed by the surface of the object when the microwave output is lowered.
The center cannot be heated with microwaves. Furthermore, the heating method is continuous heating. Therefore, while the temperature is maintained, only the surface is heated by microwaves, and the center is heated by heat conduction, which kills the characteristics of microwave heating and, in some cases, can cause a considerable temperature difference between the surface and the center. be.
本発明は被加熱物の温度をマイクロ波照射により殺菌温
度に保持するとともに、被加熱物表面と中心部との温度
差を生じないマイクロ波加熱殺菌方法の提供を目的とす
る。An object of the present invention is to provide a microwave heating sterilization method that maintains the temperature of a heated object at a sterilization temperature by microwave irradiation and does not create a temperature difference between the surface and center of the heated object.
上記目的を達成する為、本発明はマイクロ波で加熱可能
な被加熱物をマイクロ波透過性の材料からなる袋あるい
はトレーに充填・密封し、該包装体？マイクロ波で連続
的に加熱することにより所定の殺菌温度まで加熱する。In order to achieve the above object, the present invention involves filling and sealing a bag or tray made of a microwave-transparent material with a microwave-heatable object to be heated, and then filling and sealing the package. It is heated to a predetermined sterilization temperature by continuous heating with microwaves.
その後、マイクロ波の出力？はとんど変えることなく照
射方法を連続照射から間欠照射に変えることにより、被
加熱物を殺菌温度に一定時間保持する。また殺菌温度が
１００℃以上の場合は被加熱物包装体をマイクロ波透過
性の材料からなる耐圧、耐熱性の支持体に収納してマイ
クロ波加熱７行うことにより、加熱時の内圧上昇による
破袋を防止する。Then the microwave output? By changing the irradiation method from continuous irradiation to intermittent irradiation without changing much, the object to be heated is maintained at the sterilization temperature for a certain period of time. In addition, if the sterilization temperature is 100°C or higher, the packaged object to be heated can be housed in a pressure-resistant and heat-resistant support made of a microwave-transparent material and subjected to microwave heating 7, so that it will not rupture due to the increase in internal pressure during heating. Prevent bags.
この方法によれば、被加熱物が所定の殺菌温度に到達し
た後も、高出力のマイクロ波を照射するため、中心部ま
でマイクロ波が到達し、中心部も表面と同様に加熱され
、しかも間欠照射を行うことにより、照射されるマイク
ロ波の全エネルギーは少くなり、過剰加熱になることな
く殺菌温度が保持できる。さらに支持体内への包装体の
収納により、常圧下で１００℃以上の殺菌温度まで加熱
でき、また包装体が内圧により破裂する恐れもな（ゝＯ
〔実施例〕
本発明に利用できるマイクロ波加熱殺菌装置の例？第１
１および第２図に示した。According to this method, even after the object to be heated reaches a predetermined sterilization temperature, high-power microwaves are irradiated, so the microwaves reach the center and the center is heated in the same way as the surface. By performing intermittent irradiation, the total energy of the microwave irradiation is reduced, and the sterilization temperature can be maintained without excessive heating. Furthermore, by storing the package in the support, it can be heated to a sterilization temperature of 100°C or higher under normal pressure, and there is no fear that the package will burst due to internal pressure (ゝO [Example] Microwave heating that can be used in the present invention) Example of sterilizer? 1st
1 and 2.
第１図はバッチ式、第２図は連続式のマイクロ波加熱殺
菌装置の一例を示す概略図である。FIG. 1 is a schematic diagram showing an example of a batch-type microwave heating sterilizer, and FIG. 2 is a continuous-type microwave heating sterilizer.
バッチ式では充填包装された被加熱物（３）はマイクロ
波照射室（１）内で、まずマイクロ波を連続照射され、
所定の殺菌温度まで加熱される。In the batch method, the filled and packaged object to be heated (3) is first continuously irradiated with microwaves in the microwave irradiation chamber (1).
It is heated to a predetermined sterilization temperature.
殺菌温度到達後はマイクロ波照射を間欠照射に切り換え
、一定時間殺菌温度を保持した後、マイクロ波照射室（
１）より取り出し冷却する。After the sterilization temperature is reached, the microwave irradiation is switched to intermittent irradiation, and after maintaining the sterilization temperature for a certain period of time, the microwave irradiation chamber (
1) Take out and cool.
連続式では被加熱物（３）は搬送用のコンベア（力上に
供給され、マイクロ波加熱室（５）を通過する間にマイ
クロ波の連続照射により殺菌温度まで加熱され。In the continuous type, the object to be heated (3) is fed onto a conveyor, and while passing through the microwave heating chamber (5), it is heated to the sterilization temperature by continuous microwave irradiation.
続いて温度保持室（６）でマイクロ波の間欠照射により
殺菌温度ｈ′−一定時間保持され、その後冷却工程へ送
られる。マイクロ波加熱室（５）と温度保持室（６）は
互いにマイクロ波が影響を与えない構造でまた開口部か
らマイクロ波が漏洩しない構造でなげればならない。Subsequently, in the temperature holding chamber (6), the sterilization temperature h' is maintained for a certain period of time by intermittent irradiation with microwaves, and then sent to the cooling process. The microwave heating chamber (5) and the temperature holding chamber (6) must be constructed so that the microwaves do not affect each other, and the microwaves must not leak from the openings.
設定載置温度が１００℃以上の場合には、被加熱物の包
装体？マイクロ波透過性で耐圧、耐熱性を有する材料よ
りなる包装坏と略同形状の支持体に収納してマイクロ波
加熱を行うことにより、常圧下で１００℃以上まで加熱
することが可能となる。If the set mounting temperature is 100℃ or higher, the package of the heated object? By performing microwave heating while storing the product in a support made of a material that is transparent to microwaves, has pressure resistance, and heat resistance and has approximately the same shape as the packaging material, it becomes possible to heat the product to 100° C. or higher under normal pressure.
本方法ではマイクロ波出力は、被加熱物１００Ｉ当り０
．２ ＫＷ以上１．５ ＫＷ以下であることが好ましく
、また間欠照射の間隔は照射時間１０秒以内、未照射時
間５秒以上の間欠照射が望ましい。In this method, the microwave output is 0 per 100 I of the heated object.
．． The power is preferably 2 KW or more and 1.5 KW or less, and the intermittent irradiation is preferably performed with an irradiation time of 10 seconds or less and a non-irradiation time of 5 seconds or more.
以下具体例で説明する。バッチ式および連続式で表−１
に示した条件で加熱？行なった。なお包装体の内容量は
１５０．！９に統一し、マイクロ波照射部（１）、（５
）および（６）には常に包装体が６個存在するようにし
た。This will be explained below using a specific example. Table 1 for batch type and continuous type
Heating under the conditions shown in ? I did it. The content of the package is 150. ! 9, microwave irradiation section (1), (5
) and (6), there were always six packages.
加熱温度は各条件の１包装体に蛍光式ファイノく温度計
（立方電機、３Ｚ４Ｄ）￥取り付け（取付は方法は実願
昭６１−１１３５６号に記載されている。）連続的に測
定した。ノ・ンバーグの場合は光ファイバー￥２不挿入
し、ソース部分と・・ン・く−グ中心部？同時に測定し
た。The heating temperature was measured continuously under each condition by attaching a fluorescent type thermometer (3Z4D, manufactured by Kyuu Denki Co., Ltd.) to one package (the method of attachment is described in Utility Model Application No. 11356/1983). In the case of Non-Nberg, the optical fiber is not inserted for 2 yen, and the source part and the center of N-Ku? Measured at the same time.
戒−１
１バッチ 水 Ｈａ ３．５
５．０ ５ １５２ ａｒ
”７″グ １２５ ４．０ ４．０
４ １２＋ソース
３ ｌ 水 ９５ ２．５
３．０ ５ ｊ０４ 連続 ７
％ ７／ ：□グ
＋、−、７．１２５ ４．０ ４．０ ４
１２５ｒ 、 １２５ ４
．０ ｔｏ 、１！ｉ ０条件１
〜４は全て所定の殺菌温度？保持することができた。Precept-1 1 batch Water Ha 3.5
5.0 5 152 ar
"7" 125 4.0 4.0
4 12 + sauce 3 l water 95 2.5
3.0 5 j04 consecutive 7
% 7/: □G+, -, 7.125 4.0 4.0 4
125r, 125 4
．． 0 to 1! i 0 condition 1
~ 4 are all specified sterilization temperatures? I was able to hold it.
条件４の温度変化２８３図に示した。また条件５の結果
￥第４図に示した。The temperature change under condition 4 is shown in Figure 283. The results for condition 5 are also shown in Figure 4.
条件４と５は消費エネルギーは同じであるが、条件４の
間欠照射の方が１条件５の出力を下げた連続照射よりも
、より安定した温度保持ができ１表面と内部の温度差も
ほとんど生じない。Conditions 4 and 5 consume the same amount of energy, but intermittent irradiation in condition 4 maintains a more stable temperature than continuous irradiation with lower output in condition 1, and there is almost no difference in temperature between the surface and the inside. Does not occur.
本発明の方法により、マイクロ波加熱殺菌における殺菌
温度の保持がマイクロ波照射によって安定して行うこと
ができ、１００℃以上の場合でも常圧下で加熱、保持カ
ー可能である。According to the method of the present invention, the sterilization temperature in microwave heat sterilization can be stably maintained by microwave irradiation, and even when the temperature is 100° C. or higher, it is possible to heat and maintain the temperature under normal pressure.
第１１および第２図は本発明の方法に利用できるマイク
ロ波加熱殺菌装置の概略図であり、第するハンバーグと
ソースの加熱温度の経時変化？示す図であり、第５図は
保温を間欠照射で行った場合、第４図は低出力で行った
場合で、両図とも（ｂｌはｔａｌにおける保温部の拡大
（詳細）図である。FIGS. 11 and 2 are schematic diagrams of a microwave heating sterilization apparatus that can be used in the method of the present invention. FIG. 5 shows the case where the heat insulation is performed by intermittent irradiation, and FIG. 4 shows the case where the heat insulation is performed at low output.
Claims (1)
装体に一定出力のマイクロ波を連続的に照射し、所定の
殺菌温度まで加熱した後、マイクロ波を間欠照射し、被
加熱物の温度を殺菌温度に一定時間保持し、その後冷却
することを特徴とするマイクロ波加熱殺菌方法。 ２）殺菌温度が１００℃以上であり、包装体が包装体と
略同形状のマイクロ波透過性の材質からなる支持体内に
収納され、常圧下でマイクロ波照射することを特徴とす
る特許請求の範囲第１項記載のマイクロ波加熱殺菌方法
。[Claims] 1) Continuously irradiate microwaves of a constant output to a sealed package filled with an object to be heated that can be heated with microwaves, and after heating to a predetermined sterilization temperature, intermittent irradiation with microwaves. A microwave heating sterilization method characterized by maintaining the temperature of the heated object at the sterilization temperature for a certain period of time, and then cooling it. 2) A patent claim characterized in that the sterilization temperature is 100°C or higher, the package is housed in a support made of a microwave-transparent material and has substantially the same shape as the package, and is irradiated with microwaves under normal pressure. The microwave heating sterilization method according to scope 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61192276A JPS6349163A (en) | 1986-08-18 | 1986-08-18 | Microwave heating sterilization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61192276A JPS6349163A (en) | 1986-08-18 | 1986-08-18 | Microwave heating sterilization method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6349163A true JPS6349163A (en) | 1988-03-01 |
Family
ID=16288582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61192276A Pending JPS6349163A (en) | 1986-08-18 | 1986-08-18 | Microwave heating sterilization method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6349163A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227968A (en) * | 1988-06-03 | 1990-01-30 | Barilla Ger Flli Spa | Method of thermally stabilizing prepackaged food continuously |
| JP2008035827A (en) * | 2006-08-09 | 2008-02-21 | Kiyotsune Shino | Microwave heating method and microwave heating device |
-
1986
- 1986-08-18 JP JP61192276A patent/JPS6349163A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0227968A (en) * | 1988-06-03 | 1990-01-30 | Barilla Ger Flli Spa | Method of thermally stabilizing prepackaged food continuously |
| JP2008035827A (en) * | 2006-08-09 | 2008-02-21 | Kiyotsune Shino | Microwave heating method and microwave heating device |
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