FI61391C - REFERENCE FOR STERILIZATION OF A PROCEDURE WITH A LIGHT OF PROTEIN CONTAINER - Google Patents

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Mf l JK 'UTLÄGGNINOSSKIIIFT 01091 ^ "^ (51) K» .ik.3 / int.ci.3 A 23 C 3/02 FINLAND —FINLAND (21) P »t * nttlhiktmui - PMMtMaefcning Τ63ΐ6ΐ (22) H« k * ml »ptlvl - Antdknlnpdag 0 3 · 11 · 7 6 ^ ^ (23) Alkuplivt — GIM | htt * d« t 03.11-76 (41) Become Public - Bllvlt off «ncllg 07-03-77

Htmttl- j. registry registered · / 44) Nihcivtk..p «o« |. month.j «, n date_. Ro rktmt · och r * gist «rttyr« lMn Antttkftn utltgd och utl. »Krlft * n publiccrsd 30. Oh. Ö2 (32) (33) (31) Request «y privilege — Begird priortaet 06.11-75

Sweden-Sweden (SE) 7512UU0-U

(71) AB Ziristor, Fack, S-221 01 Lund 1, Sweden-Sweden (SE) (72) Hans Anders Reusing, Lund, Sweden-Sweden (SE) (7 * 0 Oy Kolster Ab (5U) Method for milk and milk The present invention relates to a method for sterilizing milk, cream and the like proteinaceous flowable dairy products.

As the sterilization of milk and other perishable and perishable products significantly improves their shelf life and durability, provided they are packaged in aseptic packaging, the goal has long been to effectively sterilize these products without changing their taste or composition.

It is known to sterilize milk by heating it to about 140 ° C in about 40-10 seconds. Although this method is both fast and effective, due to heat treatment, a chemical change takes place in the milk, e.g. the so-called. protein denaturation, which gives the milk an unpleasant, cooked taste. In addition, it is known to centrifuge the liquid in order to separate the microorganisms present in it, but in order for this treatment per se to completely kill the bacteria, the treatment must be made so extensive that e.g. the proteins are also separated.

The present invention relates to a method for sterilizing milk and similar proteinaceous flowable nutrients 2 61 391 so as not to give the sterilized products an unpleasant taste to the "cooked product", heating the sterilizable nutrients in the first processing step to 70-90 ° C, preferably 85 ° C, and centrifuging. in the second processing stage the so-called. in a bacterial spinner so that most of the spores and other microorganisms are separated, which method is characterized in that the centrifuged nutrient in the third treatment step is kept at 35-40 ° C for 10-20 minutes and finally heated briefly to about 110-140 ° C, preferably 130 ° C , Within 1-3 seconds, to render the remaining microorganisms harmless.

The method according to the invention is in principle a combination of sterilization methods known per se.

However, said combination gives a sterilization result which is considerably better than the result which would be expected when comparing the results obtained by known methods alone.

The reason for this, on the other hand, is that the different methods are in themselves particularly effective in killing different types of microorganisms. For example, centrifugation is most effective against spores, whereas heat treatment. at temperatures is effective only against certain, particularly heat-sensitive organisms, e.g., disease-causing bacteria.

The invention will now be described by way of a concrete embodiment with reference to a schematic drawing (Fig. 1) showing a combined processing apparatus.

The example describes a method of sterilizing milk, as milk processing appears to be the largest and most important application of the invention.

The treatment system shown in Fig. 1 consists of a pipeline 1 leading to a heating device 13 which in turn communicates with the interior of a centrifuge drum 3 rotatably arranged in a cylinder 2. A centrifuge drum 3 consisting essentially of a round-headed, cylindrical container with an opening 7 is connected by means of a shaft 5 to a drive motor 4, by means of which the drum can be rotated at a high speed. The drum 3 further comprises a few weakly conical plates 9 fitted to a common tube 8, all of which have through holes 10 passing through. Said inlet tube 1 leads to a tube 8 located in the drum 3 of the centrifuge, to the opening 7 of the centrifuge drum 3. This special centrifuge, which is a bacterial centrifuge, is further provided with a smaller number of holes 6 fitted in the cylindrical shell part of the centrifuge drum 3.

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Preferably, one or more pumps 12 are arranged in the pipeline 11, by means of which the milk can be forcibly circulated through the treatment system.

The heat treatment of the treatment step 3 is preferably carried out in a device which acts as a heat exchanger, i. milk and a heat-generating medium, e.g., steam, are forced to flow in different directions through channels having a common, heat-conducting septum that allows for efficient heat transfer. In this context, the most common structure is the so-called a slab device consisting of a plurality of slabs which are compressed together by a sealing contact along their edge portions and which form two separate duct systems between them, i.e. one for milk and the other for steam.

The heat treatment device 23 shown in the figure can be assumed to be the so-called as a plate device into which the milk is led through the pipe 11 and from which it is taken out through the pipe 22. The heat-containing medium, which is assumed to be e.o. in this case, steam is introduced through line 20 and removed via line 21.

The method according to the invention is based on the fact that the product, i.e.

E. O. in the example, the milk is first treated by heating so that it can be more easily neutralized in later processing steps. This treatment takes place in such a way that the milk is heated to a temperature of about 85 ° C in the first treatment stage, whereby, on the one hand, the disease-causing bacteria become eliminated and, on the other hand, the spores have a higher water uptake capacity. Subsequent bacterial centrifugation separates the spores mainly in the product and in a third treatment step, where the product is kept at a temperature of about 35-40 ° C for a relatively long time, the water uptake of the remaining spores is completed, with the result that During 3 seconds, the temperature is heated to about 100-140 ° C, preferably 130 ° C. This latter heat treatment is not in itself sufficient to cause complete sterilization of the product, but since most spores have been separated in an earlier centrifugation step and the remaining spores have been treated to be more sensitive to heat due to their water uptake, satisfactory heat sterilization can be achieved. sterilization efficiency if the product had not been treated as previously mentioned. Since the heat treatment causes the product to have an unpleasant, cooked taste, by lowering the temperature and shortening the heat exposure time, a product with a significantly better taste than possible can be obtained if sterilization is carried out solely by heat.

The figure shows how the milk is fed into the treatment system via a pipeline 16 and introduced into a heat treatment chamber 13, 461 391 where the milk is heated to about 85 ° C. This heat treatment chamber 13 can advantageously be a so-called the tile device described above.

In the first processing step, the heated, sterilized and bacterial milk is fed through a pipe 1 to the lower part of the rotating drum 3 of the centrifuge, from where it can rise up through the holes 10 of the plates 9 and spread into the space between the plates 9.

As the centrifuge drum 3 rotates, the heavier ingredients of the milk, e.g. proteins become centrifuged out towards the jacket wall of the drum, while lighter ingredients, e.g. milk fat, travel in towards the center of the tiles. The procedure is thus in principle the same as the normal milk separation procedure, in which the milk fats are separated to a greater or lesser extent from the rest of the milk liquid. Since most of the spores follow with the heavier particles towards the circumference of the centrifuge drum 3, there is an increase in the number of spores in this separated part of the milk liquid. However, it must be considered that the temperature of the milk during centrifugation exceeds about 55 ° C, because otherwise the agglutinating substances in the milk connect the spores to the milk fat balls, which are transferred to the middle parts of the centrifuge plates 9 during relatively light separation. When the milk liquid containing spores becomes ejected towards the inside of the drum of the centrifuge 3, a part of the liquid, and then also the spores, is ejected out through the holes 6 of the drum 3, which must have a diameter of 0.3-0.5 mm. In order to achieve the required efficiency, the centrifuge must be rotated at a very high speed, e.g.

10,000 rpm when the centrifuge drum diameter is 40 cm.

New milk is continuously fed to the centrifuge via the pipe 1 and the milk also passes continuously through the centrifuge to gradually leave it (after a passage time of about 10-20 seconds) through the opening 7.

Since e.o. in which case it is not desired to separate the regular constituents of the milk, the fat and proteins are mixed together again after separation.

From the centrifuge 2, the milk is led through a pipe 11 to a standing tank 14, where the milk is kept at a temperature of about 35-40 ° C for about 10-20 minutes. While the milk is standing in the container 14, the remaining heat-treated spores absorb water, which makes them more sensitive for the next heat treatment. From the standing tank 14, the milk is led to a second heat treatment chamber 23. This may be a steam injector or similar device in which the milk is heated to a temperature above 100 ° C, preferably 130 ° C. At this temperature, any disease-causing bacteria that may still be present in the milk, as well as those spores that have not been centrifuged off, are destroyed, after which the malt is ready for packaging after normal cooling.

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It is clear that once the sterilized milk has left the heat treatment chamber 23 through the tube 22, it must be protected from contact with air containing bacteria, as sterilization would be wasted, and the milk must be handled and packaged under aseptic conditions and in impermeable packaging. bacteria. Because the milk is kept below 140 ° C for most of the treatment and is short-lived, there is no denaturation of the protein in the milk. Such denaturation of a protein is highly temperature dependent and results in a so-called The formation of SH groups, i.e. hydrogen sulfide compounds, which give heat-treated milk an unpleasant, cooked taste.

The treatment method according to the invention avoids denaturation of the protein almost completely, since both centrifugation and cavitation treatment are carried out at a temperature below 70 ° C. In addition, the first heat treatment is carried out at a relatively low temperature, about 70-85 ° C, in addition to which the treatment time in the second heat treatment is limited as short as possible.

The sterilization method according to the invention is particularly well suited for sterilizing high-bacterial milk, as it has been shown that high-bacterial milk tastes considerably worse after sterilization than if some of the bacteria have been removed by separation before sterilizing treatment.

The embodiment described above is only intended as an example. The invention can be used to sterilize liquids other than milk, e.g. cream, fruit juices, soups, certain pharmacological preparations and, in general, all heat-sensitive, proteinaceous liquids.

In addition, of course, it is possible to construct different units of the equipment in different ways, e.g. bacterial centrifuge and heating devices can be implemented in many different ways.

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These are used in the production of sterilized milk products, dried or processed protein halides, fly ash dairy products.

Eftersom sterilization with a medium and liquid backbone and a barrel of the product is a suitable product for the production of aseptic packaging, which can be used as an aseptic product. year.

It is possible to sterilize the genome uptake of the genome by ca. 140 ° C under about 4-10 seconds. These methods are all suitable and effective, with the result that the color is significantly reduced and chemically modified, e.g. en s.k. äggvitedenaturering, vilken medför att mjölken far en oangenäm, Kokt smak. In this case, the centrifuges are used to separate the microorganisms from the microorganisms, for which the action is carried out on a total bacterial basis, the action of which is determined by the action of the microorganism, i.e. t.ex. äggviteämnena fränskiljes.

For example, the sterilization method for sterilizing the product and the protein protein, the sterilization process, the sterilization product of the product as described in the "Cocktail product" 90, the color of the sterilization process in which the sterilization process is sterilized. ° C, and the centrifuges are added to the skin and sk Bacterial centrifuges, which can be used for spinning and other microorganisms, are used for centrifugation of the centrifuge feeder and for three thirds at a temperature between 35-40 ° C and 10 to 20 minutes at room temperature. 110-140 ° C, 130 ° C, 1-3 seconds, for the rest of the microorganism.

The method of incorporation is based on the principle of combining and using sterilization methods.

This combination of upstream deflectors and sterilization results, which can be used as a result of the result, can be used as a result of a combination of methods. Ors can be considered to be a method for which a specific type of microorganism is used. Centrifugingen t.ex. sparkling gentleman mot Sporer, Medan däremot värmebhandlingen vid de temperaturer som här avses about himself crying gentemot vissa, speciellt väremkänsliga organismer, t.ex. pathogenic bacteria.

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In the case of commercial applications, it can be described as having a specific method of training under the scheme of the schematic process (Fig. 1).

The test is carried out for the purpose of sterilization by means of an oil, which can be used as a means of sterilization by means of a sterilization process.

Behandlingssystemet, som visas i ritningen best & r av en rör-ledning 1 som mynnar i en uppvärmningsanordning 13, vilken i sin tur stärb förbindelse med det inre av centrifugtrumman 3, vilken är roterbart anordnad inuti ett hölje 2. Centrifugtrumman 3, som i In addition to the circulating cylindrical belt, the vehicle is equipped with a motor, the axle 5 of which is connected to the drive motor 4, with the shaft running on the drum and the rotor. Vidare innehäller trumman 3 ett antal pä ett gemensamt rör 8 anordnade, svagt koniska skivor 9, vilka veltliga är försedda med skivorna genomg & ende hai 10. Det. Nämnda inloppsröret 1 mynnar i det i centrifugtrumman 3 anordande röret 8, Medan The centrifugal centrifuges may be removed from the centrifuges, the centrifuges being centrifuged 3 times 7. The special form of centrifuge, in which the bacterial centrifuges are discharged with all the means 6, must be mounted on the centrifuges 3 cylindrical mantle.

In the case of a circuit 11, the heating system or the pump 12, which may be used as a circulating system, is used.

Värmebehandlingen i behandlingssteg 3 utföres warming i en apparatus, som fungerar som en värmeväxlare, dvs mjölken och ett ettmermeav-givande medium, t.ex. änga, bringas att med olika strömningsriktningar strömma genom kanaler, som uppvisar en gemensam, värmeledande skilje-vägg, som möjliggör en effektiv värmetransport. For example, the following constructions are used in the same way. plattappareten, som bestär av ett antal plattor, som hoppressats med tätande anligg-Ning utmed sin kantpartier, och som mellan sig bildar tvä skilda kanalsystem, dvs ett kanalsystem för mjölken och et för ängan.

These figures show the color of the handles 23 as given in the s.k. plattapparat, i vilken mjölken inledes genom röret 11 oct uttages genom röret 22. Det värmebärande mediet, som i det aktuella fallet antages vara änga, inledes genom röret 20 och uttages genom röret 21.

For example, the increase in the number of refunds is based on the principle that the product can be used as a basis, in particular.

9 61391 for conditional genome uptake for the purpose of municipal neutralization. If the condition is to be observed in the case of an uptake of about 85 C, the color of the pathogenic bacteria is eliminated and the spores of the bacteria are treated with water. In this case, the bacteria-centrifugation is carried out in the interest of the product as a whole, in which case the product can be used at a temperature between about 35 ° C and 40 ° C under a relative slope, full-bodied water, The temperature between these spheres can be measured at a temperature of 100 to 140 ° C and a temperature of 130 to 140 ° C for 1-3 seconds. For example, the pulp treatment is carried out with or without the aid of a complete sterilization of the product, which is the basis of the interest of the spinneret and the centrifugation of the sporadic reaction of the spinneret. for variation and use, the sterilization of the sterilization process and the internal processing of the product and the sterilization effect of the inert products in the case of air conditioning are performed. The product is intended for use in the manufacture of products which have undergone, but have not yet undergone, the use of sterilants or products of the same color.

In this case, the whole genome is replaced by a genomic circulating system of 16 and the coloring chamber 13 is then heated to about 85 ° C. Denna värmebehandlingskammare 13 kan företrädesvis utgöras av en s.k. plattapparat, vilken ovan beskrivits.

In this case, the transfer method is used, for which sterilization is carried out in a bacterial game, in which case the genome is centrifuged for 3 weeks, the genome of which is shown in 9 of the 10 additional cells.

In the case of centrifugal tubes, the rotation of the centrifuges is limited to three parts, the weight of which is limited to the length of the drum, Medan de lättare partiklarna t.ex. mjölkfettet kommer att föras in mot plattornas centrala parti. For example, the principle of analysis is based on the principle of normal separation, for example, 9-131391 are used or otherwise separated from each other. Eftersom företrädesvis sporerna medföljer de tyngre partik-larna mot centrifugtrummans 3 periperi sker en anrikning av Sporer i denna separerade del av mjölkvätskan. The bellows are to be treated with centrifugation at a temperature of about 55 ° C, the effluent being reduced to a minimum of agglutinin associated with the centrifuge, which is separated from the ground by a separate centrifugal tank 9 central delar. In the case of a spinner, the size of the center of rotation is 3 times the size of the center of view of the center of gravity 3, the diameter of the center of gravity 3 is 6, the diameter of which is 0,3 to 0,5 mm . For the purpose of improving the efficiency of the skin, the centrifuge is rotated with the mycket, e.g. 10,000 r / m vid en centri-fugtruituna with an diameter of 40 cm.

If the genome is centrifuged as a single centrifuged genome, it is recommended that the genomic centrifuged genome be centrifuged for a period of about 10 to 20 seconds. blettas fettet och äggviteämnena tillsammans Yes efter separeringen.

After centrifugation 2, the genome of the medium 11 is heated to a temperature of 14, and the temperature is reduced to about 35 to 40 ° C for about 10 to 20 minutes. Under the upper limit of the tank 14, the quartz is used, the genomic color conditioner of which is up to the water level, and the color is used for the subsequent operation. In the case of an uptake tank 14, the upper and lower injection chambers 23 are used. The second and upward pressure chambers 23 can be used in the case of injection molding or in the case of an uptake temperature of 100 ° C to 130 ° C. In this case, the temperature of the bacteria in Finland and other parts of the spindle may be disturbed, the spores of which may be centrifuged on the wine, which may have a normal effect on the package.

In addition to the sterilization of the sample, after which the warming chamber 23 is replaced by 22, the test is performed as a dog in contact with the bacterial environment, the effect of which is to be sterilized by the use of bacteria at the same time. for-packningar. The temperature is reduced to a maximum of 140 ° C and a temperature of less than 10 61 391, with the result that the denaturation is carried out at the same time. The method of refrigeration is determined by the temperature and the temperature up to the value of the s.k. SH-grupper, dvs svavel-väte-föreningar, vilka förlänar den värmebehandlade mjölken en oangenäm, Kokt smak.

In this method, the genome is then subjected to centrifugation at a temperature of 70 ° C. For example, a temperature of about 70-85 ° C can be used, with a minimum temperature of about 30 to 85 ° C.

Sterilization methods can be performed to sterilize the environment by bacteria, which can be used to sterilize the bacteria in the game after sterilization.

For example, the exemplary use of the exemplary body. Uppfinningen kan användas vid sterilisering av andra vätskor än mjölk, t.ex. grädde, fruktsafter, soppor, vissa Pharmacologically active product.

In particular, the nature of the equipment used in the apparatus is set out in point (s), e.g. kan bakteriecentrifugen och uppvärmingsanordningarna utföras pä en mängd olika sätt.