CH183586A - Method of preserving food. - Google Patents
Method of preserving food.Info
- Publication number
- CH183586A CH183586A CH183586DA CH183586A CH 183586 A CH183586 A CH 183586A CH 183586D A CH183586D A CH 183586DA CH 183586 A CH183586 A CH 183586A
- Authority
- CH
- Switzerland
- Prior art keywords
- heat
- water
- cans
- food
- preserving food
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000001954 sterilising effect Effects 0.000 claims description 4
- 238000004659 sterilization and disinfection Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
- A23B2/00—Preservation of foods or foodstuffs, in general
- A23B2/30—Preservation of foods or foodstuffs, in general by heating materials in packages which are not progressively transported through the apparatus
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. <B>161833.</B> Verfahren zum Konservieren von Lebensmitteln. Beim Sterilisieren von Nahrungsmitteln werden die Dosen im Wasserbad oder im Dampf auf Temperaturen von<B>90</B> bis 120' erhitzt. Der Übergang der Wärme vom Dosenblech auf den Doseninhalt erfolgt auf drei verschiedene Arten. Diejenigen Teile des Nahrungsmittels, welche das Blech berühren, nehmen von diesem direkt Wärme auf und geben sie mittels Leitung an die im Innern .der Dose liegenden Partien weiter. Diejenigen Teile, welche das Blech nicht berühren, er halten Wärme durch Strahlung und Über tragung.
Diese erfolgt bei Dosen, die nach ,dem gewöhnlichen Konservierungsverfahren mit Salz- oder Zuckerwasser aufgefüllt sind, in der Weise, dass isich das Wasser am Dosenblech. erwärmt, deshalb in die Höhe steigt, an den Doseninhalt Wärme abgibt und wieder abwärts fliesst. So entsteht ein be ständig' er Kreislauf wie in einer Warm wasserheizung. Wenn nun aber die Dosen nach dem Verfahren des Hauptpatentes mit einem neutralen Gas aufgefüllt sind, muss diese Wärmeübertragung durch das Gas er- folgen. Nun zeigt eine einfache Rechnung, dass die Wärmekapazität zum Beispiel von Kohlensäure ungefähr #3000 Mal kleiner ist als die von Wasser.
Die durch Gas über tragbare Wärmemenge ist dementsprechend bedeutend kleiner als bei Wasser, also ganz geringfügig. Deshalb würde die Sterilisation .des Inhaltes solcher Dosen sehr lange Zeit erfordern und dann würden diejenigen Par tien, die das Blech berühren, zu lange der Wärme ausgesetzt sein und deswegen ver kochen.
Man kann nun diesem Übelstande ab helfen, indem man für eine wirksamere Wärmeübertragung sorgt. Dies wirderreiellt, indem man in die Blechdosen eine kleine Menge Wasser einbringt, aus dem durch Er wärmung der Dosen Dampf erzeugt wird, welcher sich am Nahrungsmittel nieder schlägt und dadurch, Wärme in dieses ab gibt. Das Kondenswasser fliesst abwärts und verdampft wieder. so entsteht ein be ständiger Kreislauf, durch den eine äusserst wirksame Wärmeabgabe erreicht wird. Die für diesen Zweck nötige Wassermenge ist selir gering.
Additional patent to main patent no. <B> 161833. </B> Process for preserving food. When sterilizing food, the cans are heated in a water bath or steam to temperatures of <B> 90 </B> to 120 '. The transfer of heat from the tin to the contents of the can occurs in three different ways. Those parts of the food that touch the sheet absorb heat directly from it and pass it on to the parts inside the can by means of conduction. Those parts that do not touch the sheet metal, he hold heat through radiation and transfer.
This is done with cans that have been filled with salt or sugar water according to the usual preservation process, in such a way that the water is on the tin plate. warmed up, therefore rises, gives off heat to the contents of the can and flows down again. This creates a continuous cycle like in a hot water heating system. If, however, the cans are filled with a neutral gas according to the method of the main patent, this heat transfer must take place through the gas. Now a simple calculation shows that the heat capacity of carbon dioxide, for example, is about # 3000 times smaller than that of water.
The amount of heat that can be carried by gas is accordingly significantly smaller than with water, i.e. very slightly. Therefore, the sterilization of the contents of such cans would take a long time and those parts that touch the sheet would be exposed to heat for too long and therefore boil.
You can now remedy this problem by ensuring a more effective heat transfer. This is achieved by introducing a small amount of water into the tin cans, from which steam is generated by heating the cans, which is deposited on the food and thereby releases heat into it. The condensed water flows downwards and evaporates again. this creates a constant cycle through which extremely effective heat dissipation is achieved. The amount of water required for this purpose is very small.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH183586T | 1935-02-22 | ||
CH161833T | 1935-02-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH183586A true CH183586A (en) | 1936-04-15 |
Family
ID=25717479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH183586D CH183586A (en) | 1935-02-22 | 1935-02-22 | Method of preserving food. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH183586A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2119351A1 (en) * | 1970-04-26 | 1972-01-20 | Thomassen & Drijver | Method of sterilizing food |
-
1935
- 1935-02-22 CH CH183586D patent/CH183586A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2119351A1 (en) * | 1970-04-26 | 1972-01-20 | Thomassen & Drijver | Method of sterilizing food |
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