JPH0367669B2 - - Google Patents
Info
- Publication number
- JPH0367669B2 JPH0367669B2 JP59178823A JP17882384A JPH0367669B2 JP H0367669 B2 JPH0367669 B2 JP H0367669B2 JP 59178823 A JP59178823 A JP 59178823A JP 17882384 A JP17882384 A JP 17882384A JP H0367669 B2 JPH0367669 B2 JP H0367669B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- sintered metal
- steam
- fermentation raw
- raw materials
- 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.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 26
- 239000002994 raw material Substances 0.000 claims description 21
- 238000000855 fermentation Methods 0.000 claims description 18
- 230000004151 fermentation Effects 0.000 claims description 18
- 230000001954 sterilising effect Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000010025 steaming Methods 0.000 description 11
- 235000013379 molasses Nutrition 0.000 description 10
- 239000010802 sludge Substances 0.000 description 8
- 238000004659 sterilization and disinfection Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、発酵原料の蒸煮殺菌方法に関する。
更に詳しくは、焼結金属からなる金属管の内部に
発酵原料を流し、管の外部から水蒸気を供給する
ことを特徴とする発酵原料の殺菌方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for sterilizing fermentation raw materials by steaming.
More specifically, the present invention relates to a method for sterilizing fermentation raw materials, which is characterized by flowing the fermentation raw materials inside a metal tube made of sintered metal and supplying steam from the outside of the tube.
（従来の技術）
発酵法によつて有用物質を生産する場合、発酵
原料に存在する雑菌を除く為に、通常、蒸気によ
る熱殺菌する工程が採用されている。発酵原料と
しては廃糖蜜が最も安価な原料と一つとして広く
使用されている。(Prior Art) When producing useful substances by fermentation, a process of heat sterilization using steam is usually employed to remove bacteria present in the fermented raw materials. Blackstrap molasses is widely used as one of the cheapest raw materials for fermentation.
（発明が解決しようとする問題点）
廃糖蜜を発酵原料として用いる場合、加熱蒸煮
時に多量のクラツジ（泥又は沈積物）が発生し、
配管や槽に付着蓄積することが大きな問題であ
る。即ち、発生スラツジは通常遠心分離や沈降法
によつて除去されるが、高温に加熱される蒸煮管
や配管等にスラツジが付着し、沈積し、雑菌汚染
等の原因ともなり、定期的な分解洗滌をよぎなく
される。(Problems to be solved by the invention) When blackstrap molasses is used as a fermentation raw material, a large amount of mud (mud or sediment) is generated during heating and steaming.
A major problem is that it adheres and accumulates in pipes and tanks. In other words, generated sludge is usually removed by centrifugation or sedimentation, but sludge adheres to steaming pipes and piping that are heated to high temperatures, accumulates, and causes bacterial contamination, so periodic decomposition is not necessary. No more washing.
（問題点を解決するための手段）
本発明者らは、スラツジの沈積を防ぎ、発酵原
料の効果的な蒸煮殺菌方法について種々検討した
結果、蒸気を焼結金属の細孔を通して発酵原料に
接触させ、殺菌する方法について検討し、極めて
効果的な方法であることを確認し、本発明を完成
した。(Means for Solving the Problems) As a result of various studies on methods for preventing sludge deposition and effective steam sterilization of fermentation raw materials, the present inventors discovered that steam is brought into contact with fermentation raw materials through the pores of sintered metal. We studied a method of sterilizing and sterilizing the bacteria, and confirmed that it was an extremely effective method, and completed the present invention.
即ち、本発明は、１〜100μの孔径を有する燒
結金属管の内部に発酵原料を流し、燒結金属管の
外部の水蒸気圧を管内の発酵原料圧より高くして
管の外部から水蒸気を供給することを特徴とする
発酵原料の殺菌方法を要旨とする。 That is, in the present invention, a fermentation raw material is flowed inside a sintered metal tube having a pore diameter of 1 to 100 μ, the water vapor pressure outside the sintered metal tube is made higher than the fermentation raw material pressure inside the tube, and steam is supplied from the outside of the tube. The summary is a method for sterilizing fermented raw materials, which is characterized by the following.
本発明者らは、上記の構成要件を採用すること
により、焼結金属の毛細管を通して発酵原料液に
接触した蒸気は管の表面上に凝縮し、水の膜を形
成するか、管の表面上蒸気のうすい層が形成さ
れ、スラツジの沈着が防止されるのではないかと
考え、実験を試み、期待通りの効果があることを
確認したものである。 By adopting the above-mentioned structural requirements, the present inventors believe that the steam that comes into contact with the fermentation raw material liquid through the sintered metal capillary tube will condense on the surface of the tube, forming a film of water, or forming a water film on the surface of the tube. We thought that a thin layer of steam would form and prevent the deposition of sludge, so we conducted an experiment and found that it had the expected effect.
焼結金属は、ブロンズ或いはステンレスなどの
金属を焼結した無数の毛細管をもつエレメントで
あるが、耐熱性、耐衝撃性など機械的強度の大き
な多孔性金属であり、各種の物質の濾過、脱水、
や発泡などに利用されている。しかし発酵原料の
蒸煮殺菌の目的で焼結金属を用いる方法について
は知られていない。 Sintered metal is an element with countless capillaries made of sintered metal such as bronze or stainless steel, and it is a porous metal with high mechanical strength such as heat resistance and impact resistance, and is useful for filtration and dehydration of various substances. ,
It is used for foaming, etc. However, there is no known method of using sintered metal for the purpose of steam sterilization of fermentation raw materials.
本発明に用いる焼結金属の材質については、
銅、鉄、ステンレス等、孔径については、例えば
１〜100μ、形状については、平板、円筒状、バ
イオネツト、角板状など、肉厚については、２〜
５mmがあげられるが、特に限定しない。代表的な
例として、孔径10〜30μの円筒状のステンレス製
の金属エレメントがあげられる。ステンレス製焼
結金属で作製した蒸煮管の内部の一方より、発酵
原料、例えば水で希釈した糖蜜液（例えば30〜40
％糖濃度）を送液し、発酵原料の温度が95℃以上
になるように、2.5〜４Kg／cm2Ｇの低圧蒸気を焼
結金属の蒸煮管の外側に送る。蒸煮管は一定の滞
留時間を持たせるに必要な長さを設定する。流体
時間は、例えば残留生菌数（コ／ml）によつて決
める。焼結金属管は、蒸煮管の一部、或いは全部
分に用いることができる。焼結金属管の外部に凝
縮するドレイン（凝縮水）を系外に排出する為に
ドレイントラツプを設置することが好ましい。 Regarding the material of the sintered metal used in the present invention,
For copper, iron, stainless steel, etc., the pore diameter is 1 to 100μ, the shape is flat, cylindrical, bayonet, square plate, etc., and the wall thickness is 2 to 100μ.
An example is 5 mm, but there is no particular limitation. A typical example is a cylindrical stainless steel metal element with a pore diameter of 10 to 30μ. A fermentation material, such as a molasses solution diluted with water (e.g. 30 to 40
% sugar concentration) and send low-pressure steam of 2.5 to 4 kg/cm 2 G to the outside of the sintered metal steaming tube so that the temperature of the fermented raw material is 95°C or higher. The length of the steamer tube is determined to ensure a certain residence time. The fluidization time is determined, for example, by the number of remaining viable bacteria (k/ml). Sintered metal tubes can be used for part or all of the steamer tube. It is preferable to install a drain trap in order to discharge drain (condensed water) that condenses on the outside of the sintered metal tube out of the system.
（効果）
本発明の利点は、廃糖蜜など発酵原料を用いる
場合の、蒸煮殺菌時のスラツジの付着がなく、長
期間の使用が可能なことと、スラツジの付着沈積
がない為雑菌汚染等の異常が少い点があげられ
る。更に、大きな利点として殺菌時の騒音が極め
て小さいことがあげられる。従来のスーパージヤ
ーや混合ミキサー等を用いる蒸気殺菌の場合、温
度を120℃以上に維持する為、蒸気圧力７〜10
Kg／cm2Ｇの高圧蒸気が用いられており、かなり大
きな騒音が発生することが知られているが、本発
明法の場合、従来法にくらべ、低圧蒸気（2.5〜
４Kg／cm2Ｇ）を用いることができる点もあつて騒
音の発生が小さい。(Effects) The advantages of the present invention are that when fermentation raw materials such as blackstrap molasses are used, there is no sludge attached during steam sterilization, and it can be used for a long period of time, and there is no accumulation of sludge, so there is no possibility of bacterial contamination. The point is that there are few abnormalities. Another great advantage is that the noise during sterilization is extremely low. In the case of steam sterilization using conventional super jars or mixers, the temperature is maintained at 120℃ or higher, so the steam pressure is 7 to 10℃.
Kg/cm 2 G high-pressure steam is used, and it is known that it generates quite a lot of noise, but in the case of the method of the present invention, compared to the conventional method, low-pressure steam (2.5 ~
4Kg/cm 2 G) can be used, and the noise generation is small.
（実施例）
以下実施例によつて説明するが、本発明を限定
するものではない。(Examples) Examples will be described below, but the present invention is not limited thereto.
実施例 １
孔径10μの焼結金属（ステンレス製）エレメン
トを内管としてもち、図１に示した形状の蒸煮管
を作製した。即ち、焼結金属管内に発酵原料を流
し、外部から焼結金属の細孔を通して蒸気が内部
に拡散する構造の蒸煮管を作製した。甘蒸糖蜜を
水で希釈し、糖濃度約35％に設定した液を流速
0.8m3／Hrの割合で流した。この糖蜜液の圧力P1
対し、焼結金属管外部より供給する蒸気の圧力
P2を高目に設定したP2＞P1。即ち、ΔP＝P2−P1
＝0.5〜1.0Kg／cm2Ｇの条件で加熱殺菌（約120℃）
を行なつた。Example 1 A steaming tube having the shape shown in FIG. 1 was prepared using a sintered metal (stainless steel) element with a pore diameter of 10 μm as an inner tube. That is, a steaming tube with a structure in which fermentation raw materials were poured into a sintered metal tube and steam diffused from the outside into the inside through the pores of the sintered metal was fabricated. Sweet steamed molasses was diluted with water and the liquid was set to a sugar concentration of approximately 35% at a flow rate.
It was flowed at a rate of 0.8 m 3 /Hr. The pressure of this molasses liquid P 1
On the other hand, the pressure of the steam supplied from outside the sintered metal tube
P 2 > P 1 with P 2 set high. That is, ΔP=P 2 −P 1
=0.5~1.0Kg/ cm2Heat sterilization under G conditions (approximately 120℃)
I did this.
120℃蒸煮２時間、50回累計時間100時間使用後
の蒸煮管内のスケール（沈積物）を測定したとこ
ろ、入口部分で0.5mm（軟着層形成）程度、出口
部分で１〜1.5mm（固定層形成）程度のスケール
が認められたのみで、内部には糖蜜原料からくる
色素の着色以外殆んどスケールの沈積が認められ
なかつた。対照として焼結金属の代りに通常のス
テンレス製の蒸煮管を用い同様の条件で試験を行
なつたところ、168時間の使用で管内に５〜７mm
のスケールの沈積が認められた。 When we measured the scale (deposit) inside the steaming tube after 2 hours of 120℃ steaming and 100 hours of 50 cycles, we found that it was about 0.5 mm (soft layer formation) at the inlet and 1 to 1.5 mm (fixed) at the outlet. Only scale (layer formation) was observed, and almost no scale deposits were observed inside except for the coloring of the pigment coming from the molasses raw material. As a control, we conducted a test under the same conditions using an ordinary stainless steel steaming tube instead of sintered metal, and found that after 168 hours of use, 5 to 7 mm
Deposition of scale was observed.
実施例 ２
フイリツピン産廃糖蜜（糖度55％ｗ／ｗ）15屯
を蒸煮槽に送り、これを40°Bxに希釈後、図１に
示す焼結金属加熱システムを通じて蒸煮槽に循環
させ槽内糖蜜温度を30℃から95℃迄２時間にて昇
温した。この時の焼結金属管による加熱部の温度
は120℃で、通液される糖蜜の滞留時間は８秒程
度であつた。その後、糖液は槽内で４時間90℃で
滞留された後、遠心分離機によりスラツジ成分を
除去跡、培養工程に供給された。Example 2 15 tons of Philippine waste molasses (sugar content 55% w/w) was sent to a steaming tank, diluted to 40°Bx, and circulated to the steaming tank through the sintered metal heating system shown in Figure 1 to reduce the temperature of the molasses in the tank. The temperature was raised from 30°C to 95°C over 2 hours. At this time, the temperature of the heating section using the sintered metal tube was 120°C, and the residence time of the molasses passed was about 8 seconds. Thereafter, the sugar solution was kept in the tank at 90°C for 4 hours, and then the sludge components were removed using a centrifuge and the remaining sludge was supplied to the culture process.
この実験を60回約１ケ月にわたり実施後、焼結
金属加熱部を分解点検した所、スケールの生成は
殆んどみられなかつた。 After carrying out this experiment 60 times over a period of approximately one month, the sintered metal heating section was disassembled and inspected, and almost no scale formation was observed.
一方、対照としてステンレス二重管にて加熱を
行い約１ケ月60回のくり返し実験後、加熱部を点
検した所、スケールは管内壁全面に約３mm程度の
付着が観察された。 On the other hand, as a control, heating was carried out in a stainless steel double tube, and after repeated experiments 60 times over about a month, the heating section was inspected, and scale of about 3 mm was observed to be attached to the entire inner wall of the tube.
図１は、本発明用の焼結金属エレメントを用い
た蒸煮管の説明用垂直断面図である。図２は焼結
金属エレメントを用いる発酵原料の蒸煮殺菌シス
テムの配置図（垂直断面図）を示す。
FIG. 1 is an explanatory vertical cross-sectional view of a steamer tube using a sintered metal element for use in the present invention. FIG. 2 shows a layout (vertical sectional view) of a steam sterilization system for fermentation raw materials using sintered metal elements.
Claims (1)
に発酵原料を流し、燒結金属管の外部の水蒸気圧
を管内の発酵原料圧より高くして管の外部から水
蒸気を供給することを特徴とする発酵原料の殺菌
方法。1. A fermentation raw material is flowed inside a sintered metal tube having a pore diameter of 1 to 100μ, and the water vapor pressure outside the sintered metal tube is made higher than the pressure of the fermentation raw material inside the tube, and steam is supplied from the outside of the tube. Method for sterilizing fermented raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17882384A JPS6156071A (en) | 1984-08-28 | 1984-08-28 | Method of sterilizing raw material to be fermented |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17882384A JPS6156071A (en) | 1984-08-28 | 1984-08-28 | Method of sterilizing raw material to be fermented |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6156071A JPS6156071A (en) | 1986-03-20 |
| JPH0367669B2 true JPH0367669B2 (en) | 1991-10-23 |
Family
ID=16055282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17882384A Granted JPS6156071A (en) | 1984-08-28 | 1984-08-28 | Method of sterilizing raw material to be fermented |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6156071A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611279A (en) * | 1993-10-02 | 1997-03-18 | Mitsubishi Pencil Kabushiki Kaisha | Process of producing a printing plate for a stamp |
| US10562274B1 (en) * | 2016-02-22 | 2020-02-18 | Apple Inc. | Glass fastening and sealing systems |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205481A (en) * | 1982-05-21 | 1983-11-30 | Kureha Chem Ind Co Ltd | Method and apparatus for instantaneous sterilization of fluid |
-
1984
- 1984-08-28 JP JP17882384A patent/JPS6156071A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58205481A (en) * | 1982-05-21 | 1983-11-30 | Kureha Chem Ind Co Ltd | Method and apparatus for instantaneous sterilization of fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6156071A (en) | 1986-03-20 |
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