US20010048959A1 - Method of adding fats and oils to porous fodder - Google Patents
Method of adding fats and oils to porous fodder Download PDFInfo
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- US20010048959A1 US20010048959A1 US09/242,889 US24288999A US2001048959A1 US 20010048959 A1 US20010048959 A1 US 20010048959A1 US 24288999 A US24288999 A US 24288999A US 2001048959 A1 US2001048959 A1 US 2001048959A1
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- fat
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- porous feed
- adding apparatus
- porous
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/80—Feeding-stuffs specially adapted for particular animals for aquatic animals, e.g. fish, crustaceans or molluscs
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K20/00—Accessory food factors for animal feeding-stuffs
- A23K20/10—Organic substances
- A23K20/158—Fatty acids; Fats; Products containing oils or fats
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K40/00—Shaping or working-up of animal feeding-stuffs
- A23K40/30—Shaping or working-up of animal feeding-stuffs by encapsulating; by coating
Definitions
- the present invention relates to a method for adding fats and oils to porous fodder in which the fat and oil are added in a higher ratio to the porous feed containing a great amount of voids formed inside.
- Porous feed containing a great amount of voids formed inside are widely known as feeds for pisciculture, etc.
- feeds for pisciculture powders composed solely of fish powder, live fish, pupa etc., kneaded materials thereof, and in addition, pellet type solid feeds etc., processed in the form of solids from compositions prepared by compounding components such as a fish powder, live fish and other components such as vegetable oil cake, cereal powder, starch, vitamins, minerals etc., have been widely used in view of its easy handling, excellent feed making property, etc.
- porous feed having floating properties obtained by forming a great amount of voids in pisciculture feed.
- This porous feed is produced by foaming for a porous structure due to quick vaporization of water when a raw material prepared by compounding various components for feed is kneaded by an extruder and a raw material made into a paste formed by compression heat and pressure in the extruder is extruded into air.
- porous feed floats on a water surface for a long period of time due to a great amount of voids therein and is ingested by fish successfully, and further, is not broken up by water absorption. Therefore, this feed has merits in that it causes little water pollution, etc.
- porous feed having high fat and oil content prepared by allowing the above-described porous feed to contain fats and oils in a high ratio since they provide a high growth rate as feeds for pisciculture of young yellowtail, red sea bream, horse mackerel etc.
- Japanese Laid-Open Patent Publication No. Hei-2-138944 discloses a method in which porous feed is placed under reduced pressure to allow liquid fat and oil to impregnate into the feed. Namely, it is described that porous feed is put into an oil bath and subjected to reduced pressure, however, more efficient production is desired.
- the present invention has been accomplished in view of the above-described problems, and an object thereof is to provide a method for adding fat and oil by which a great amount of fat and oil are continuously adhered efficiently on porous feed.
- the present invention for solving the above-described problems is a method in which porous feed is continuously poured into a fat and oil adding apparatus under reduced pressure together with fat and oil to be added and treated.
- a drum mixer type fat and oil adding apparatus which has conventionally been used or a paddle mixer type fat and oil adding apparatus may be permissible irrespective of mixing type provided reduced condition inside thereof is maintained.
- the entire fat and oil adding apparatus is accommodated and used in a pressure vessel, a rotary valve, a double damper etc., and supply and discharge of porous feed are continuously conducted while maintaining a reduced condition. In this case, it is preferable to use a rotary valve to continue supplying and discharging smoothly.
- the fat and oil adding apparatus it may be advantageous to use a cylindrical casing in a continuous mixer of a ribbon screw type and to use rotary valves at a supplying port and a discharging port.
- This mixer has excellent pressure resistance, and can allow addition of fat and oil to be conducted evenly over the whole feed since it is in the form of a cylinder. Further, production is also relatively simple.
- a conventional continuous quantitative supplying apparatus may be advantageously placed near the inlet of the fat and oil adding apparatus and thus there is no need to use a special apparatus.
- the vacuum pump for producing a reduced condition in a fat and oil adding apparatus is not limited by the types thereof.
- a fat and oil adding apparatus may be placed directly after a drier, a cooler may be placed after the fat and oil adding apparatus, and fat and oil are added to porous feed by the fat and oil adding apparatus before the porous feed is cooled.
- the product After being dried by the drier, the product can be modified by given fat and oil addition ratios by passing the product through a continuous fat and oil adding apparatus kept at a reduced condition whether or not the product is one which is cooled by a cooler or a porous feed at high temperature directly after the drier. Particularly if porous feed at high temperature is not cooled and passed through the fat and oil adding apparatus kept at a reduced condition, the volume of a cooler plated in a latter stage can be suppressed since then water is dispersed and evaporated from the porous feed at a high temperature and water content accordingly decreases, and consequently, water content and temperature simultaneously decrease while maintaining the same fat and oil adding ratio.
- the volume of the vacuum pump is increased by the vaporization volume of water, for maintaining a reduced condition. Further, there is also a case in which treatment for allowing a rotary valve to have heat resistance is necessary. Moreover, measurements such as keeping moisture etc., may be conducted to prevent dew formation etc., on the mixer casing.
- the addition ratio of fat and oil can be improved also by maintaining a reduced condition to a certain extent in a fat an oil adding apparatus, and when it is from ⁇ 400 to ⁇ 700 mmHg, the addition ratio can be higher.
- the degree of vacuum is lower than ⁇ 400 mmHg, greater improvements in the addition ratio are not obtained, and even when the degree of vacuum is increased over ⁇ 700 mmHg, further increases in the addition ratio are not obtained and equipment, such as a pressure resistant apparatus etc., becomes large, therefore such degrees of vacuum are not practical.
- the content of fat and oil contained in a raw material itself is from 5 to 10%
- the content of fat and oil added before granulation is from 5 to 10%, or more
- the content of fat and oil added by a fat and oil adding apparatus is from 5 to 10%, therefore, the total fat and oil addition ratio of the final porous feed is from 15 to 30%.
- FIG. 1 is a flow chart showing Example 1 of a method for adding fat and oil to porous feed according to the present invention.
- FIG. 2 is a flow chart showing Example 2 of a method for adding fat and oil to porous feed according to the present invention.
- FIG. 3 is a view showing the internal structure of a continuous type fat and oil adding apparatus for decompression used in the present invention.
- FIG. 4 is a front view of a continuous type fat and oil adding apparatus for decompression used in the present invention.
- FIG. 1 shows a flow chart of one embodiment for carrying out a method for adding fat and oil to porous feed.
- 1 represents a mixer for mixing raw materials
- 2 represents an extruder for pressuring and kneading by adding vapor
- 3 represents a drier
- 4 represents a cooler
- 5 represents a fat and oil adding apparatus.
- a mixed raw material prepared by compounding appropriately various components for feed is poured into a mixer 1 (as shown by an arrow A), then, to this is added fat and oil, water and vapor (as shown by an arrow B) and heating and mixing are conducted, and the resulting mixed raw material is poured into an extruder 2 .
- vapor is added to the raw material as shown by an arrow C and the mixture is pressurized and kneaded, extruded and molded, then, dried by a drier 3 , and the dried material is cooled by a cooler 4 .
- a cooler 4 In this way, there is formed porous feed in the form of a pellet set at a given water content and temperature.
- the porous feed is fed into a fat and oil adding apparatus 5 maintaining a reduced condition for further addition of fat and oil, and stored inside for about 2 minutes, to this is added fat and oil, then, discharged out of the fat and oil adding apparatus 5 .
- fat and oil in a given amount are added to porous feed.
- the extruder 2 is composed of a mixer, a screw which constitutes an extruding portion, a case thereof, a die provided on the leading end of the case, etc.
- a mixer a screw which constitutes an extruding portion
- a case thereof a case provided on the leading end of the case, etc.
- the components are mixed and extruded by the screw in the case, and when the resulting mixture is extruded through die pores provided on the tip of the die, it is allowed to swell to form a great amount of voids therein to obtain porous feed.
- a rotary type cutter is provided at the tip of the die, and the porous feed is cut into a given length by the rotary type cutter and molded into a given size.
- the porous feed at this moment has a temperature from 60 to 90° C. and a water content of 20 to 25%.
- the drier 3 is a band type apparatus which dries the porous feed by hot air, and the porous feed is dried to such extent that the water content becomes the required 7 to 8%.
- the temperature of the porous feed at the outlet of the drier 3 is from 70 to 100° C.
- the cooler 4 is an apparatus which introduces outer air to the inside and makes the introduced outer air to contact the porous feed to cool the feed to a given temperature.
- the external view of the fat and oil adding apparatus 5 is shown in FIG. 4.
- the fat and oil adding apparatus 5 is composed of two-compartment rotary valves 7 A and 8 A, and a ribbon screw type continuous mixer 6 , and piping is connected to a vacuum pump (not shown) from a vacuum discharge tube-connecting port, namely a vacuum exhaust port 9 , and the pressure inside is reduced.
- the degree of decompression by the vacuum pump is not constant and may vary, and may be opened to atmosphere halfway.
- FIG. 3 shows the internal structure of the fat and oil adding apparatus 5 .
- the fat and oil adding apparatus 5 has a structure in which the ribbon screw type continuous mixer 6 rotates (rotating speed is from 6.5 to 8.5 rpm) in a casing 10 .
- the diameter of the screw is 700 mm, the length thereof is 6000 mm, the blade pitch is 525 mm, the blade number is 11 , the width of a ribbon 11 of the ribbon screw type blade 6 is 100 mm.
- 11 A represents an auxiliary blade which is composed of a round tube connecting the stirring ribbon 11 in the axial direction and aids the stirring. When this auxiliary blade 11 A is optionally provided, addition of fat and oil becomes more uniform, and in addition, the time during which the porous feed is kept in the fat and oil adding apparatus 5 can be controlled.
- auxiliary blades 11 A may be placed evenly over the entire length or at every other blade pitch, or the positions thereof may be optional.
- On the casing 10 there are provided a suitable number of vacuum exhaust ports 9 at appropriate intervals along the longitudinal direction, and the degree of decompression inside is kept at about ⁇ -600 mmHg (permissible if it is within the range from ⁇ 400 mmHg to ⁇ 700 mmHg).
- the fat and oil to be added are continuously mixed with the feed before the vacuum rotary valve 7 A. And the mixture is introduced intact into the fat and oil adding apparatus 5 through the rotary valve 7 A.
- the method for quantitative supply of fat and oil for fat and oil addition is not particularly restricted. Further, both may simply be made continuous to flow simultaneously for mixing, and particular atomization of fat and oil, etc., are not required. By thus passing through the apparatuses in order, fat and oil are added to the porous feed.
- FIG. 2 shows a flow chart of the second embodiment of the method for adding fat and oil to porous feed.
- a fat and oil adding apparatus 5 is placed directly after a drier 3 , and porous feed is poured into the fat and oil adding apparatus 5 in stages when drying is completed, and fat and oil are added.
- a rotary valve 7 A, the fat and oil adding apparatus 5 etc. will be subjected to a given heat resistance measurement etc., in view of the high temperatures of the porous feed introduced into the fat and oil adding apparatus 5 .
- fat and oil can be added in greater amounts than that exhibited in the above-described example 1. Further, there is also an advantage in that the load on the cooler 4 at the latter stage is reduced since water is also partially dispersed from the porous feed.
- the air flow rate in the cooler was 4.5 m 3 /min
- the degree of decompression of the fat and oil adding apparatus was from ⁇ 600 to ⁇ 620 mmHg
- the retention time was 2 minutes.
- the measuring positions are respective outlets.
- a pellet composed of porous feed having a diameter of 19 mm and a length of 17 mm was maintained in the fat and oil adding apparatus 5 under a degree of decompression of ⁇ 600 mmHg, and the fat and oil adsorption ratio was calculated from the weight of the pellet before addition and the weight of the pellet after discharge (fat and oil adhered on the surface had been wiped off).
- Example 2 The fat and oil addition ratio was 7% in Example 1, while, in Example 2, the fat and oil addition ratio increased to 11%.
- Fat and oil can be continuously added in high ratio to porous feed.
- fat and oil can be added to porous feed for pisciculture etc., at high rate or ratio and continuously, and porous feed containing necessary amounts of fat and oil can be produced efficiently.
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- Food Science & Technology (AREA)
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Abstract
Description
- The present invention relates to a method for adding fats and oils to porous fodder in which the fat and oil are added in a higher ratio to the porous feed containing a great amount of voids formed inside.
- Porous feed containing a great amount of voids formed inside are widely known as feeds for pisciculture, etc. As feeds for pisciculture, powders composed solely of fish powder, live fish, pupa etc., kneaded materials thereof, and in addition, pellet type solid feeds etc., processed in the form of solids from compositions prepared by compounding components such as a fish powder, live fish and other components such as vegetable oil cake, cereal powder, starch, vitamins, minerals etc., have been widely used in view of its easy handling, excellent feed making property, etc.
- However, solid feeds produced by using a pellet mill etc., have a notable tendency to precipitate and to quickly precipitate once thrown into water. Therefore, such solid feeds are not easily and sufficiently ingested by fish and go rotten at the bottom of water and become causes of water pollution and the generation of sick fish.
- For eliminating such defects in solid feeds, there have been produced and used porous feed having floating properties obtained by forming a great amount of voids in pisciculture feed. This porous feed is produced by foaming for a porous structure due to quick vaporization of water when a raw material prepared by compounding various components for feed is kneaded by an extruder and a raw material made into a paste formed by compression heat and pressure in the extruder is extruded into air. Thus produced porous feed floats on a water surface for a long period of time due to a great amount of voids therein and is ingested by fish successfully, and further, is not broken up by water absorption. Therefore, this feed has merits in that it causes little water pollution, etc.
- Further, porous feed has been used having high fat and oil content prepared by allowing the above-described porous feed to contain fats and oils in a high ratio since they provide a high growth rate as feeds for pisciculture of young yellowtail, red sea bream, horse mackerel etc.
- Conventionally, for adding of fats and oils to porous feed, a raw material prepared by compounding given various components is molded into porous feed by an extruder, then, this feed is dried by a drier utilizing hot air to control the water content thereof, cooled by a cooler, transported to a fat and oil adding apparatus, where fat and oil are added to the porous feed. However, the content of the fat and oil in this case is at most about 15%.
- On the other hand, for adding fat and oil in high content, Japanese Laid-Open Patent Publication No. Hei-2-138944 discloses a method in which porous feed is placed under reduced pressure to allow liquid fat and oil to impregnate into the feed. Namely, it is described that porous feed is put into an oil bath and subjected to reduced pressure, however, more efficient production is desired.
- The present invention has been accomplished in view of the above-described problems, and an object thereof is to provide a method for adding fat and oil by which a great amount of fat and oil are continuously adhered efficiently on porous feed. The present invention for solving the above-described problems is a method in which porous feed is continuously poured into a fat and oil adding apparatus under reduced pressure together with fat and oil to be added and treated.
- As the fat and oil adding apparatus by which fat and oil are continuously added to porous feed while maintaining a reduced condition inside the apparatus, a drum mixer type fat and oil adding apparatus which has conventionally been used or a paddle mixer type fat and oil adding apparatus may be permissible irrespective of mixing type provided reduced condition inside thereof is maintained. Specifically, the entire fat and oil adding apparatus is accommodated and used in a pressure vessel, a rotary valve, a double damper etc., and supply and discharge of porous feed are continuously conducted while maintaining a reduced condition. In this case, it is preferable to use a rotary valve to continue supplying and discharging smoothly.
- Regarding the fat and oil adding apparatus, it may be advantageous to use a cylindrical casing in a continuous mixer of a ribbon screw type and to use rotary valves at a supplying port and a discharging port. This mixer has excellent pressure resistance, and can allow addition of fat and oil to be conducted evenly over the whole feed since it is in the form of a cylinder. Further, production is also relatively simple. As the supplying apparatus of fat and oil, a conventional continuous quantitative supplying apparatus may be advantageously placed near the inlet of the fat and oil adding apparatus and thus there is no need to use a special apparatus. Further, the vacuum pump for producing a reduced condition in a fat and oil adding apparatus is not limited by the types thereof.
- Alternatively, it may also be permissible that continuous type fat and oil adding apparatuses are placed in multi-stages and addition of fat and oil to porous feed repeated.
- Further, in the present invention, a fat and oil adding apparatus may be placed directly after a drier, a cooler may be placed after the fat and oil adding apparatus, and fat and oil are added to porous feed by the fat and oil adding apparatus before the porous feed is cooled.
- After being dried by the drier, the product can be modified by given fat and oil addition ratios by passing the product through a continuous fat and oil adding apparatus kept at a reduced condition whether or not the product is one which is cooled by a cooler or a porous feed at high temperature directly after the drier. Particularly if porous feed at high temperature is not cooled and passed through the fat and oil adding apparatus kept at a reduced condition, the volume of a cooler plated in a latter stage can be suppressed since then water is dispersed and evaporated from the porous feed at a high temperature and water content accordingly decreases, and consequently, water content and temperature simultaneously decrease while maintaining the same fat and oil adding ratio. In this case, the volume of the vacuum pump is increased by the vaporization volume of water, for maintaining a reduced condition. Further, there is also a case in which treatment for allowing a rotary valve to have heat resistance is necessary. Moreover, measurements such as keeping moisture etc., may be conducted to prevent dew formation etc., on the mixer casing.
- The addition ratio of fat and oil can be improved also by maintaining a reduced condition to a certain extent in a fat an oil adding apparatus, and when it is from −400 to −700 mmHg, the addition ratio can be higher. When the degree of vacuum is lower than −400 mmHg, greater improvements in the addition ratio are not obtained, and even when the degree of vacuum is increased over −700 mmHg, further increases in the addition ratio are not obtained and equipment, such as a pressure resistant apparatus etc., becomes large, therefore such degrees of vacuum are not practical.
- Regarding additions of fat and oil to porous feed, the content of fat and oil contained in a raw material itself is from 5 to 10%, the content of fat and oil added before granulation is from 5 to 10%, or more, and the content of fat and oil added by a fat and oil adding apparatus is from 5 to 10%, therefore, the total fat and oil addition ratio of the final porous feed is from 15 to 30%.
- FIG. 1 is a flow chart showing Example 1 of a method for adding fat and oil to porous feed according to the present invention.
- FIG. 2 is a flow chart showing Example 2 of a method for adding fat and oil to porous feed according to the present invention.
- FIG. 3 is a view showing the internal structure of a continuous type fat and oil adding apparatus for decompression used in the present invention.
- FIG. 4 is a front view of a continuous type fat and oil adding apparatus for decompression used in the present invention.
- A method for adding fat and oil to porous feed according to the present invention will be described below referring to the attached drawings.
- FIG. 1 shows a flow chart of one embodiment for carrying out a method for adding fat and oil to porous feed. In the figure,1 represents a mixer for mixing raw materials, 2 represents an extruder for pressuring and kneading by adding vapor, 3 represents a drier, 4 represents a cooler, and 5 represents a fat and oil adding apparatus.
- For adding fat and oil, first, a mixed raw material prepared by compounding appropriately various components for feed is poured into a mixer1 (as shown by an arrow A), then, to this is added fat and oil, water and vapor (as shown by an arrow B) and heating and mixing are conducted, and the resulting mixed raw material is poured into an
extruder 2. In theextruder 2, vapor is added to the raw material as shown by an arrow C and the mixture is pressurized and kneaded, extruded and molded, then, dried by adrier 3, and the dried material is cooled by acooler 4. In this way, there is formed porous feed in the form of a pellet set at a given water content and temperature. The porous feed is fed into a fat andoil adding apparatus 5 maintaining a reduced condition for further addition of fat and oil, and stored inside for about 2 minutes, to this is added fat and oil, then, discharged out of the fat andoil adding apparatus 5. Thus, fat and oil in a given amount are added to porous feed. - Thereafter, various apparatuses for carrying out the fat and oil adding method will be described in detail.
- The
extruder 2 is composed of a mixer, a screw which constitutes an extruding portion, a case thereof, a die provided on the leading end of the case, etc. When various components for feed are weighed in a previous stage and poured in, the components are mixed and extruded by the screw in the case, and when the resulting mixture is extruded through die pores provided on the tip of the die, it is allowed to swell to form a great amount of voids therein to obtain porous feed. Further, a rotary type cutter is provided at the tip of the die, and the porous feed is cut into a given length by the rotary type cutter and molded into a given size. The porous feed at this moment has a temperature from 60 to 90° C. and a water content of 20 to 25%. - The
drier 3 is a band type apparatus which dries the porous feed by hot air, and the porous feed is dried to such extent that the water content becomes the required 7 to 8%. The temperature of the porous feed at the outlet of thedrier 3 is from 70 to 100° C. Thecooler 4 is an apparatus which introduces outer air to the inside and makes the introduced outer air to contact the porous feed to cool the feed to a given temperature. - The external view of the fat and
oil adding apparatus 5 is shown in FIG. 4. The fat andoil adding apparatus 5 is composed of two-compartment rotary valves 7A and 8A, and a ribbon screw typecontinuous mixer 6, and piping is connected to a vacuum pump (not shown) from a vacuum discharge tube-connecting port, namely a vacuum exhaust port 9, and the pressure inside is reduced. The degree of decompression by the vacuum pump is not constant and may vary, and may be opened to atmosphere halfway. - FIG. 3 shows the internal structure of the fat and
oil adding apparatus 5. - As shown in FIG. 3, the fat and
oil adding apparatus 5 has a structure in which the ribbon screw typecontinuous mixer 6 rotates (rotating speed is from 6.5 to 8.5 rpm) in a casing 10. The diameter of the screw is 700 mm, the length thereof is 6000 mm, the blade pitch is 525 mm, the blade number is 11, the width of a ribbon 11 of the ribbonscrew type blade 6 is 100 mm. 11A represents an auxiliary blade which is composed of a round tube connecting the stirring ribbon 11 in the axial direction and aids the stirring. When this auxiliary blade 11A is optionally provided, addition of fat and oil becomes more uniform, and in addition, the time during which the porous feed is kept in the fat andoil adding apparatus 5 can be controlled. These auxiliary blades 11A may be placed evenly over the entire length or at every other blade pitch, or the positions thereof may be optional. On the casing 10, there are provided a suitable number of vacuum exhaust ports 9 at appropriate intervals along the longitudinal direction, and the degree of decompression inside is kept at about −-600 mmHg (permissible if it is within the range from −400 mmHg to −700 mmHg). - The fat and oil to be added are continuously mixed with the feed before the vacuum rotary valve7A. And the mixture is introduced intact into the fat and
oil adding apparatus 5 through the rotary valve 7A. The method for quantitative supply of fat and oil for fat and oil addition is not particularly restricted. Further, both may simply be made continuous to flow simultaneously for mixing, and particular atomization of fat and oil, etc., are not required. By thus passing through the apparatuses in order, fat and oil are added to the porous feed. From 5 to 10% of fat and oil are newly added to the porous feed by the fat andoil adding apparatus 5, in addition to the fat and oil (5 to 7%) contained in the raw material and the fat and oil (5 to 10%) added before granulation, to prepare porous feed of high fat and oil content having a total fat and oil content of 20 to 30%. - Other embodiment of the method for adding fat and oil will be described using FIG. 2.
- FIG. 2 shows a flow chart of the second embodiment of the method for adding fat and oil to porous feed. As shown in FIG. 2, a fat and
oil adding apparatus 5 is placed directly after a drier 3, and porous feed is poured into the fat andoil adding apparatus 5 in stages when drying is completed, and fat and oil are added. In this case, a rotary valve 7A, the fat andoil adding apparatus 5 etc., will be subjected to a given heat resistance measurement etc., in view of the high temperatures of the porous feed introduced into the fat andoil adding apparatus 5. Since the addition of fat and oil into porous feed at higher temperatures is conducted at a higher rate than at a normal temperatures, fat and oil can be added in greater amounts than that exhibited in the above-described example 1. Further, there is also an advantage in that the load on thecooler 4 at the latter stage is reduced since water is also partially dispersed from the porous feed. - Next, comparative experiments of the embodiments (Examples 1 and 2) are shown.
- (1) Compounding ratio of porous feed used in the experiments is as described below.
Compounded material Ratio Fish powder 67.25 Soybean cake 10.0 Wheat powder (ginkgo) 7.75 Corn starch 2.5 Tapioca starch 12.5 Total 100.0 - (2) Operation condition
- The air flow rate in the cooler was 4.5 m3/min, the degree of decompression of the fat and oil adding apparatus was from −600 to −620 mmHg, and the retention time was 2 minutes.
- (2) Experiment results
-
Material Water temperature content Fat and oil at outlet, (%) at outlet, (%) addition ratio, (%) Drier 80 9.0 Cooler 20 8.0 Fat and 20 8.0 7.0 oil adding apparatus -
Material Water temperature content Fat and oil at outlet, (%) at outlet, (%) addition ratio, (%) Drier 80 11.3 Fat and 50 8.3 oil adding apparatus Cooler 20 8.0 11.0 - The measuring positions are respective outlets.
- When the results of the above-described experiments are compared with Examples 1 and 2, it is known that the cooler is subjected to temperature reduction by 60° C. in Example 1, while the temperature reduction by 30° C. is effected in Example 2, therefore, the load on the cooler is reduced much more under conditions of Example 2.
- (3) The method for measuring fat and oil addition ratios and measurement results are as follows.
- A pellet composed of porous feed having a diameter of 19 mm and a length of 17 mm was maintained in the fat and
oil adding apparatus 5 under a degree of decompression of −600 mmHg, and the fat and oil adsorption ratio was calculated from the weight of the pellet before addition and the weight of the pellet after discharge (fat and oil adhered on the surface had been wiped off). - The fat and oil addition ratio was 7% in Example 1, while, in Example 2, the fat and oil addition ratio increased to 11%.
- As described above, according to the method for adding fat and oil to porous feed of the present invention, extremely excellent results as described below are obtained.
- (1) Fat and oil can be continuously added in high ratio to porous feed.
- Further, when a decompression type fat and oil adding apparatus is placed directly after a drier, the following effects (2), (3) and (4) are obtained.
- (2) The water content of the product is reduced by adding porous feed having a high temperature under decompression by a decompression type fat and oil adding apparatus. Namely, the drying effect is obtained.
- (3) The temperature of the product lowers when passing through a decompression type fat and oil adding apparatus. Namely, the cooling effect is obtained.
- (4) Since porous feed having a high temperature enters into a decompression type fat and oil adding apparatus, fat and oil adsorption amounts increase when compared to porous feed of a normal temperature.
- According to the method for adding fat and oil to porous feed of the present invention, fat and oil can be added to porous feed for pisciculture etc., at high rate or ratio and continuously, and porous feed containing necessary amounts of fat and oil can be produced efficiently.
Claims (6)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP8-234866 | 1996-09-05 | ||
JP234866/1996 | 1996-09-05 | ||
JP23486696 | 1996-09-05 | ||
PCT/JP1997/003140 WO1998009542A1 (en) | 1996-09-05 | 1997-09-05 | Method of adding fats and oils to porous fodder |
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US20010048959A1 true US20010048959A1 (en) | 2001-12-06 |
US6440477B2 US6440477B2 (en) | 2002-08-27 |
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US09/242,889 Expired - Fee Related US6440477B2 (en) | 1996-09-05 | 1997-09-05 | Method of adding fats and oils to porous fodder |
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US (1) | US6440477B2 (en) |
EP (1) | EP0927522A4 (en) |
CA (1) | CA2263534A1 (en) |
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WO (1) | WO1998009542A1 (en) |
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WO2010122107A1 (en) * | 2009-04-23 | 2010-10-28 | Bacterfield International S.A. | Probiotic oil suspension and use thereof |
US20110104327A1 (en) * | 2009-04-23 | 2011-05-05 | Bacterfield International S.A. | Probiotic pet food |
US20220151277A1 (en) * | 2019-03-08 | 2022-05-19 | Jean Marc Tachet Création | Method for enriching food products with proteins and/or with food supplements |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19856680C1 (en) | 1998-12-09 | 2000-08-17 | Effem Gmbh | Process for vacuum coating an extruded food |
NO309253B1 (en) * | 1999-03-25 | 2001-01-08 | Nutreco Aquaculture Res Ct As | Process for the preparation of feed pellets and plants for use in carrying out the process |
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1997
- 1997-09-05 CA CA002263534A patent/CA2263534A1/en not_active Abandoned
- 1997-09-05 US US09/242,889 patent/US6440477B2/en not_active Expired - Fee Related
- 1997-09-05 WO PCT/JP1997/003140 patent/WO1998009542A1/en not_active Application Discontinuation
- 1997-09-05 EP EP97939202A patent/EP0927522A4/en not_active Withdrawn
-
1999
- 1999-03-04 NO NO991081A patent/NO991081L/en not_active Application Discontinuation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2010122107A1 (en) * | 2009-04-23 | 2010-10-28 | Bacterfield International S.A. | Probiotic oil suspension and use thereof |
US20110104327A1 (en) * | 2009-04-23 | 2011-05-05 | Bacterfield International S.A. | Probiotic pet food |
US20220151277A1 (en) * | 2019-03-08 | 2022-05-19 | Jean Marc Tachet Création | Method for enriching food products with proteins and/or with food supplements |
Also Published As
Publication number | Publication date |
---|---|
EP0927522A1 (en) | 1999-07-07 |
CA2263534A1 (en) | 1998-03-12 |
WO1998009542A1 (en) | 1998-03-12 |
EP0927522A4 (en) | 2000-05-10 |
NO991081D0 (en) | 1999-03-04 |
US6440477B2 (en) | 2002-08-27 |
NO991081L (en) | 1999-03-04 |
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