WO2003082678A1 - Procedimiento de fabricación de un producto derivado de sangre animal en polvo empaquetado y producto y utilizaciones correspondientes - Google Patents
Procedimiento de fabricación de un producto derivado de sangre animal en polvo empaquetado y producto y utilizaciones correspondientes Download PDFInfo
- Publication number
- WO2003082678A1 WO2003082678A1 PCT/ES2003/000129 ES0300129W WO03082678A1 WO 2003082678 A1 WO2003082678 A1 WO 2003082678A1 ES 0300129 W ES0300129 W ES 0300129W WO 03082678 A1 WO03082678 A1 WO 03082678A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- product
- time
- samples
- animal blood
- derived
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B4/00—General methods for preserving meat, sausages, fish or fish products
- A23B4/005—Preserving by heating
- A23B4/0053—Preserving by heating with gas or liquids, with or without shaping, e.g. in form of powder, granules or flakes
- A23B4/0056—Preserving by heating with gas or liquids, with or without shaping, e.g. in form of powder, granules or flakes with packages, or with shaping in the form of blocks or portions
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23J—PROTEIN COMPOSITIONS FOR FOODSTUFFS; WORKING-UP PROTEINS FOR FOODSTUFFS; PHOSPHATIDE COMPOSITIONS FOR FOODSTUFFS
- A23J1/00—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites
- A23J1/06—Obtaining protein compositions for foodstuffs; Bulk opening of eggs and separation of yolks from whites from blood
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/24—Animal feeding-stuffs from material of animal origin from blood
Definitions
- the invention relates to a method of manufacturing a product derived from packaged animal blood powder.
- a subject of the invention is also a product derived from packaged animal blood powder.
- the object of the invention is also a use of a sheet material for the manufacture of wrappers for products derived from animal blood powder and uses of the process according to the invention.
- Products derived from animal blood are known, this blood being obtained from animals slaughtered in slaughterhouse.
- products of this type such as plasma, red blood cell, hemoglobin, various protein fractions derived from animal blood, etc. These products are usually used for human and animal consumption.
- Various processes for the manufacture of these products are also known so that a powder product is obtained, low moisture and packaged.
- These products due to their origin, inevitably have a certain bacterial load: enterobacteria, coliforms, Salmonella, S. aureus, sulphidereductive Clostridia and Clostridium perfringens, among others. It is convenient to reduce this bacterial load to established minimum values.
- a heat treatment for viral inactivation is known, specifically for the HIV virus (AIDS virus) and HBV (hepatitis B virus) in products derived from human blood.
- This treatment is performed. in pharmaceutical products intended primarily for injections, and is specifically described for albumin and factor VIII (coagulation factor) fractions of human origin.
- albumin and factor VIII coagulation factor
- the application of this treatment over whole phases (plasma, whole blood or red blood cells) of the blood has not been described.
- the treatment is intended to alter the protein structure of the virus by thermal rise.
- the increase in temperature causes the denaturation of viral proteins and their consequent loss of structure.
- the basic parameters of heat treatment for viral inactivation are a temperature between 60 ° C and 70 ° C and a time between 2 and 72 hours.
- Stabilizers are used that stabilize the product against heat treatment, such as carbohydrates, sorbitol, sucrose glycine, etc. Viral inactivation is only applicable for certain formulations of the product to be treated (type of protein, stabilizers used, and other components such as salts and excipients).
- the object of the invention is to overcome these drawbacks.
- This purpose is achieved by a method of manufacturing a product derived from packaged animal blood powder characterized in that it comprises a packaging stage and subsequently a heat treatment stage of said packaged product at a temperature between 30 ° C and 60 ° C for more than 24 hours.
- the manufacturing process according to the invention allows the reduction of the bacterial load of the products derived from packaged animal blood powder, without loss of the remaining properties.
- solubility percentage of insolubles
- plasma an improvement in the water retention capacity and, in certain cases in the gel hardness
- the heat treatment is carried out on the product already packaged in its final packaging, so no additional product handling steps are required, but only the storage of the final product already packaged under certain temperature conditions and for a certain time, which means a minimum added cost to the product.
- any risk of subsequent contamination due to handling is avoided.
- the procedure can be carried out without the need to add any type of stabilizer, and affects the entire range of bacteria that are of interest in the product derived from animal blood.
- products derived from similar animal blood such as granules, also fall within the scope of the invention, since a granulate is basically a powder, only properly agglomerated.
- the duration of the process (in general several days) allows to solve in a simpler way the possible problems arisen during the same.
- the heat treatment to which the product is subjected is a treatment that does not have negative aspects associated with the environment (radiation, pollution, etc.). In addition, it does not involve the addition of chemical reagents or the presence of chemical residues.
- the procedure achieves a bacteriological reduction, probably thanks to subjecting the bacteria to a stressful situation.
- the bacteria are placed at a temperature conducive to their growth and reproduction, but in an environment of low humidity and low biological activity of water, typical of a powdered product. Under these conditions the microorganisms are in a stressful situation in which they cannot divide and die by not having the right conditions for their survival.
- products derived from powdered blood have humidities normally below 15%, and always below 20%. Although this humidity is not an intrinsic requirement to develop the process of the invention, it should be taken into account that a product derived from powdered blood with a humidity greater than 20%, is already a product that loses its physical characteristics of dust when remaining practically in a pasty state.
- the procedure can be used for any product derived from animal blood, both whole blood, and plasma, red blood cells or derivatives of any of them.
- the packaging is done with a wrapper whose water vapor permeability is less than 3 g / m 2 / day.
- the powdered product usually already contains a sufficiently low humidity, it has been observed that the efficiency of the process is improved if a wrapper with a low water vapor permeability is used. This prevents ambient humidity from entering the interior of the package and, therefore, is in contact with the product by insolubilizing it when it is retained in it due to the high water retention capacity of blood proteins. Additionally it has been observed that in this way the properties of gel hardness and water retention capacity have a better performance.
- a subject of the invention is also a product derived from animal blood powder packaged in a package whose permeability to water vapor is less than 3 g / m 2 / day.
- the product packaged in this way can be subjected to the process according to the invention in optimal conditions, since its packaging perfectly isolates it from ambient humidity.
- the product has a humidity of less than 15% by weight, and most preferably less than 10% by weight.
- low humidity is one of the factors that create a stressful environment for bacteria, so it is particularly interesting to reduce product moisture.
- the treated product has an amount of total aerobic microorganisms of less than 10 s cfu / g (colony forming units per gram), preferably less than 5 x 10 4 cfu / g and most preferably less than 10 4 cfu / g.
- the product is preferably plasma, red blood cell, hemoglobin, or protein fractions derived from animal blood.
- the origin of the blood can be from any animal slaughtered in slaughterhouse, such as porcine, beef, or goat origin.
- the wrap in which the animal blood product is packaged comprises a sheet material of the group consisting of polyolefins (such as polyethylene and / or polypropylene), aluminum and combinations of the above. These sheet materials are readily available for use in wrappers and a sufficiently low moisture permeability can be obtained.
- permeabilities of less than 3 g / m 2 / day with polyethylene bags with a thickness greater than or equal to approximately 25 to 35 microns (25 microns for high density polyethylene (HDPE), 35 microns for low polyethylene density (LDPE)).
- Aluminum foils used in wrappers have water vapor permeability much lower than the previous ones.
- the object of the invention is also the use of a sheet material whose permeability to water vapor is less than 3 g / m 2 / day for the manufacture of wrappers for products derived from powdered animal blood.
- Another object of the invention is the use of a method according to the invention for increasing the water retention capacity of a powdered blood plasma. As will be described below, the process according to the invention allows to increase the water retention capacity of a powdered blood plasma.
- Another object of the invention is the use of a method according to the invention for the accelerated reduction of the amount of microorganisms or total bacteria of a product derived from powdered animal blood.
- Another object of the invention is the use of a process according to the invention for the preparation of products derived from packaged animal blood powder suitable for human and animal consumption.
- Fig. 1 graph of water vapor permeability as a function of the thickness of polyethylene sheets
- Fig. 6 total aerobic microorganisms as a function of time
- Figs. 7 to 13 graphs of the results of example 2, with hemoglobin powder: Fig. 7, percentage of protein as a function of time,
- Fig. 13 total aerobic microorganisms as a function of time
- Fig. 14 percentage of protein as a function of time
- Fig. 15 percentage of humidity as a function of time
- Fig. 30 percentage of protein as a function of time
- Fig. 31 percentage of humidity as a function of time
- Fig. 33 percentage of ashes as a function of time
- Fig. 35 gel hardness as a function of time
- Fig. 36 water retention capacity as a function of time
- Fig. 38 total aerobic microorganisms as a function of time
- the storage time of a product at a chosen temperature may vary depending on the degree of decrease in the microbiological or bacterial load that is desired, or the degree of alteration of the product. In general, the storage time can be variable depending on the values to be achieved.
- the control of the storage temperature is essential to achieve a decrease in the microbiological load without altering the physical-chemical parameters of the product. An excessively high temperature would adversely alter the properties of the product; while a low temperature would not produce stressful effects on the microbiological load.
- the effect of the storage temperature on the product may become dependent on the material of the container. It has been found that a product (powder plasma) packaged in mixed paper bags with a low density interleaved polyethylene sheet (35 microns) with a water permeability of 2.8 g / m 2 / day, after 15 days becomes insoluble at a temperature of 36 ° C. On the other hand, this same product packaged in aluminum or plastic bags of 200 microns thick maintains its physical-chemical characteristics. The permeability of the container to moisture and gases depends, first of all, on the material of the container and the thickness of the sheet of this material. Thus, for the polyethylene, the kinetics shown in Fig. 1 (the thick lines) are observed. verticals indicate the thickness of the polyethylene used in the wrappers of the examples).
- the water vapor permeability of aluminum bags is ⁇ 0.05 g / m 2 / day.
- the manufacturing process always includes a bagging or packaging of the product.
- the type of bag will be determined by the product, using the most appropriate packaging, and the properties that are intended to be obtained from the product after treatment.
- the product is packed, it is placed on pallets for transport to a thermostated chamber.
- the powdered plasma is packed in paper bags with 25 kg polyethylene foil, while another of the treated products (hemoglobin powder) is packed in 0.5 kg aluminum bags and these in turn placed in boxes with a total weight of 10 kg.
- continuous temperature recorders are placed in different areas of the pallet that will allow, either during the process or at the end of this process, to know the evolution of the temperature.
- Hemoglobin powder which, for example, is used as a food coloring.
- SDAP Spray-Dried Animal Plasma or spray-dried animal plasma
- pure pig powder plasma used, for example, as a protein ingredient in meat sausages.
- This product has been packed in aluminum bags with a capacity for 0.5 kg.
- the tests have been carried out up to 45 days to observe the effect of the temperature, which has been (37 ⁇ 3 ° C), although finally the residence time of the product will be considered the most appropriate.
- the objective of this test was to study the effect of the storage of hemoglobin powder at 37 ° C on the microbiological load without change in the rest of the properties.
- 350 kg of hemoglobin powder distributed in 35 boxes containing 20 aluminum bags of 0.5 kg each, were subjected to the temperature mentioned for 45 days. Samples were taken at time 0 and post- riormente, every 15 days. Simultaneously, samples stored at room temperature (18-22 ° C) were analyzed. The samples in the example are called ⁇ OT BOX ", while the samples at room temperature are called" CONTROL "The results obtained were as follows.
- Fig. 2 shows the levels of hemoglobin protein powder during the 45-day test, with respect to the control.
- Fig. 3 shows the moisture levels of hemoglobin powder during a 45-day test, with respect to the control.
- Fig. 4 shows the levels of insoluble hemoglobin powder during a 45-day test, with respect to the control.
- the 45-day data is not presented as it is confusing.
- Fig. 5 shows the hemoglobin ash levels in powder during a 45-day test, with respect to the control.
- T.A. room temperature
- Fig. 6 shows the decrease in bacterial load of hemoglobin powder during a 30-day test, with respect to the control.
- the objective of this test was to study the effect of storage of hemoglobin powder at 37 ° C on the microbiological load without change in the rest of the properties.
- Fig. 7 shows hemoglobin protein powder levels during a 15-day test.
- Fig. 8 shows the moisture levels of hemoglobin powder during a 15-day test, with respect to the control.
- Fig. 9 the levels of insoluble hemoglobin powder are shown during a 15-day test, with respect to the control.
- Fig. 10 shows hemoglobin ash levels in powder during a 15-day test, with respect to the control.
- SDAP Sprav-Dried Animal Plasma - Spray-dried animal plasma
- This product has been packaged in paper bags with a 35 micron thick polyethylene bag inside with a capacity of 25 Kg for carrying out the control, and in 7 micron aluminum and 200 micron thick polyethylene bags, for carrying out the process according to the invention.
- the tests have been performed up to 45 days to observe the effect of temperature.
- Fig. 14 shows the levels of SDAP protein packed in aluminum during a 45-day test, with respect to the control.
- Fig. 15 shows the humidity levels of SDAP packed in aluminum during a 45-day test, with respect to the control.
- Fig. 16 shows the levels of insoluble SDAP packed in aluminum during a 45-day test, with respect to the control. • Ash percentage.- No changes in ash levels are detected in the samples submitted to the treatment compared to the controls.
- Fig. 17 shows the levels of SDAP ash packed in aluminum during a 45-day test, with respect to the control.
- Fig. 18 the gel hardness is shown comparing the samples packed in aluminum with the control samples during a 45-day test.
- Figs. 19 and 20 show the percentages of water retention capacity of the samples packed in aluminum compared to the samples at room temperature during a 45-day test, and the increases of the percentages in relative% with respect to the control sample ( room temperature) for each time.
- Fig. 21 the decrease of the bacterial load of SDAP is shown during a 45-day test, with respect to the control.
- the objective of this test was to study the effect of SDAP storage at 37 ° C on the microbiological load without change in the rest of the properties.
- 15 aluminum bags of 7 microns thick (10 kg) and 15 bags of polyethylene 200 microns thick (10 kg) of SDAP were subjected to the aforementioned temperature for 45 days. Samples were taken at time 0 and subsequently, every 15 days. Simultaneously, samples stored at room temperature in the current bags were analyzed with a 35 micron thick (18-22 ° C) polyethylene sheet.
- the samples in the example are called “ALUMINUM" the lot packaged in aluminum bags and "PLASTIC" the lot packaged in polyethylene bags of 200 microns, while the samples at room temperature are called "CONTROL".
- Fig. 22 shows the levels of SDAP protein packed in aluminum and polyethylene during a 45-day test, with respect to the initial control and at room temperature packed in paper bag with polyethylene sheet.
- Fig. 23 shows the humidity levels of SDAP packed in aluminum and polyethylene during a 45-day test, with respect to the initial control and at room temperature packed in paper bag with polyethylene sheet.
- Insolubility percentage SDAP samples packaged in paper bags with polyethylene foil, when subjected to heat treatment, increase the insolubility percentages to levels that are above the limits established for this product. Thus, a sample subjected to 37 ° C for 15 days in this type of bag, reaches insolubility levels above 50%. An increase in the percentage of insolubles is also observed at 45 days when the product is packaged in aluminum or polyethylene bags.
- Fig. 24 shows the levels of insoluble SDAP packed in aluminum and polyethylene during a 45-day test, with respect to the initial control and at room temperature packed in paper bag with polyethylene sheet. • Ash percentage.- No changes in ash levels are detected in the samples submitted to the treatment compared with the controls at room temperature, and compared with samples at time 0.
- Fig. 25 shows the levels of SDAP ash packed in aluminum and polyethylene during a 45-day test, with respect to the initial control and at room temperature packed in paper bag with polyethylene sheet.
- Fig. 26 The percentages of gel hardness increase are shown in Fig. 26 comparing the samples packed in aluminum or in polyethylene with respect to the samples at room temperature in paper bags with polyethylene sheet and time 0 during a 45-day test of duration.
- Figs. 27 and 28 show the relative percentages of water retention capacity of the samples packaged in aluminum or polyethylene with respect to the samples at room temperature in paper bags with polyethylene sheet and time 0 during a 45-day test of duration. The percentages with respect to the beginning are shown, as well as the difference with respect to the control sample (room temperature) for each time.
- the following table summarizes the data obtained:
- Fig. 29 shows the decrease in bacterial load of SDAP during a 45-day test, with respect to the control at room temperature and at time 0.
- the purpose of this example is to show the results obtained by subjecting the SDAP product to a temperature of 45 °.
- the SDAP production lot from which these samples were taken had a high initial microbiological load. Samples were taken every seven days to analyze the evolution of the bacterial load and the remaining physicochemical properties. These samples have been called "HOT-BOX".
- samples of the SDAP product stored at room temperature have also been packaged in aluminum bags, which have been called "CONTROL”. The trial was completed at 21 days as the insoluble level reached unacceptable levels, as will be shown below.
- the results obtained were the following:
- the following table 17 shows the percentage of microbiological reduction, considering the total aerobic microorganisms.
- the SDAP does not show differences in percentage of protein, moisture, insoluble, and ash with respect to the control bags. Bags treated at 45 ° appear to have a slightly lighter color than the control. An increase in gel hardness and water retention capacity is also appreciated.
- Microbial contamination it can be seen that the control samples maintain their level of contamination while the SDAP subjected to heat treatment has a reduction of total aerobic microorganisms equal to 1 logarithmic unit. You can also see a reduction in clostridia.
- the SDAP does not show differences in its percentage of protein, moisture, and ash level between the treated and control bags. But there is an increase in the percentage of insolubles.
- the treated SDAP has a lighter color than the control. There is also an increase in water retention capacity with respect to the control. On the contrary, the gel hardness shows a reduction, probably due to the increase in the percentage of insoluble.
- the control SDAP practically maintains the level of contamination, with a small reduction in the level of total aerobic microorganisms and with a maintenance of the clostridium values.
- the heat treated SDAP shows a reduction in bacterial contamination. Clostridium values are reduced below the detection level.
- the treated SDAP shows no differences in percentage of protein, moisture, and ash with respect to the control SDAP. But there is a large increase in the percentage of insolubles, and they put this product out of specifications. The color has also changed, towards light brown. Probably due to the insoluble percentage levels, both gel hardness and water retention capacity decrease.
- the control SDAP maintains its contamination, while the heat-treated SDAP decreases its bacteriological load in terms of total aerobic microorganisms. The rest of the microbiological values maintain their levels.
- the objective of this test was to study the effect of storage of hemoglobin powder at 58 ° C on the microbiological load and physicochemical parameters. To do this, 3 boxes of 20 Kg each, divided into bags of 1 Kg of Aluminum with water permeability of 0.05 g / m 2 / day, were subjected to said temperature for one week. Samples were taken at time 0 and subsequently every twelve hours.
- microbiological properties show differences between the samples during the process. There is a clear reduction in the total count after 24 hours.
- the objective of this test was to study the effect of SDAP storage at 37 ° C on the microbiological load without change in the rest of the properties.
- 10 paper bags with a 35 micron thick polyethylene sheet (gauge 140) of high density and 2.1 g / m 2 / day of water permeability (25 Kg) were subjected to the aforementioned temperature for 2 weeks .
- the objective of this test was to study the effect of the storage of whole blood powder at 37 ° C on the microbiological load without change in the rest of the properties.
- 10 paper bags with a 35 micron thick polyethylene sheet (gauge 140) of high density and 2.1 g / m 2 / day of water permeability (25 Kg) were subjected to the aforementioned temperature for 7 weeks .
- Clostridium contamination decreases with treatment, although it is difficult to appreciate with the results obtained.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- Wood Science & Technology (AREA)
- Physiology (AREA)
- Animal Husbandry (AREA)
- Health & Medical Sciences (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Meat, Egg Or Seafood Products (AREA)
- Dairy Products (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Peptides Or Proteins (AREA)
- Feed For Specific Animals (AREA)
- Packages (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT03709838T ATE299829T1 (de) | 2002-04-01 | 2003-03-20 | Verfahren zur herstellung eines von tierblut abgeleiteten produkts in form eines verdichteten pulvers, produkt und entsprechende verwendung |
AU2003214274A AU2003214274A1 (en) | 2002-04-01 | 2003-03-20 | Method of producing a product derived from animal blood in the form of a packed powder, product and corresponding uses |
DE60301066T DE60301066T2 (de) | 2002-04-01 | 2003-03-20 | Verfahren zur herstellung eines von tierblut abgeleiteten produkts in form eines verdichteten pulvers, produkt und entsprechende verwendung |
EP03709838A EP1491449B8 (en) | 2002-04-01 | 2003-03-20 | Method of producing a product derived from animal blood in the form of a packed powder, product and corresponding uses |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200200749A ES2197810B1 (es) | 2002-04-01 | 2002-04-01 | Procedimiento de fabricacion de un producto derivado de sangre animal en polvo empaquetado y producto y utilizaciones correspondientes. |
ES200200749 | 2002-04-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003082678A1 true WO2003082678A1 (es) | 2003-10-09 |
Family
ID=28459668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2003/000129 WO2003082678A1 (es) | 2002-04-01 | 2003-03-20 | Procedimiento de fabricación de un producto derivado de sangre animal en polvo empaquetado y producto y utilizaciones correspondientes |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1491449B8 (es) |
AT (1) | ATE299829T1 (es) |
AU (1) | AU2003214274A1 (es) |
DE (1) | DE60301066T2 (es) |
DK (1) | DK1491449T3 (es) |
ES (1) | ES2197810B1 (es) |
WO (1) | WO2003082678A1 (es) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347259A (en) * | 1977-07-16 | 1982-08-31 | Niigata Engineering Co., Ltd. | Method for reducing the bacterial population of blood powder |
US4495278A (en) * | 1981-04-27 | 1985-01-22 | Baxter Travenol Laboratories, Inc. | Process for making novel blood clotting enzyme compositions |
EP0844005A1 (en) * | 1996-11-21 | 1998-05-27 | Bayer Corporation | Dry-heat viral inactivation under controlled moisture conditions |
-
2002
- 2002-04-01 ES ES200200749A patent/ES2197810B1/es not_active Expired - Fee Related
-
2003
- 2003-03-20 AT AT03709838T patent/ATE299829T1/de not_active IP Right Cessation
- 2003-03-20 DE DE60301066T patent/DE60301066T2/de not_active Expired - Lifetime
- 2003-03-20 EP EP03709838A patent/EP1491449B8/en not_active Expired - Lifetime
- 2003-03-20 AU AU2003214274A patent/AU2003214274A1/en not_active Abandoned
- 2003-03-20 DK DK03709838T patent/DK1491449T3/da active
- 2003-03-20 WO PCT/ES2003/000129 patent/WO2003082678A1/es not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4347259A (en) * | 1977-07-16 | 1982-08-31 | Niigata Engineering Co., Ltd. | Method for reducing the bacterial population of blood powder |
US4495278A (en) * | 1981-04-27 | 1985-01-22 | Baxter Travenol Laboratories, Inc. | Process for making novel blood clotting enzyme compositions |
EP0844005A1 (en) * | 1996-11-21 | 1998-05-27 | Bayer Corporation | Dry-heat viral inactivation under controlled moisture conditions |
Also Published As
Publication number | Publication date |
---|---|
EP1491449A1 (en) | 2004-12-29 |
ES2197810B1 (es) | 2005-04-01 |
DE60301066T2 (de) | 2006-06-01 |
AU2003214274A1 (en) | 2003-10-13 |
EP1491449B1 (en) | 2005-07-20 |
ATE299829T1 (de) | 2005-08-15 |
EP1491449B8 (en) | 2006-06-07 |
DE60301066D1 (de) | 2005-08-25 |
DK1491449T3 (da) | 2005-11-21 |
ES2197810A1 (es) | 2004-01-01 |
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