JP4202410B1 - Purified okara manufacturing method and purified okara - Google Patents

Abstract

To obtain a large amount of okara as a high quality okara in a short time using mechanical means.
SOLUTION: Primary okara a ₁ obtained by separating soy milk as a raw material for tofu is added in a filter cylinder provided with a filter hole 7 on a cylindrical or conical outer periphery without adding water or adding water. Supply to the rotary transfer filtration mechanism 1 such as the installed screw, the solid components of long fibers such as bean hulls and hypocotyls contained in the primary okara components, and the solid content of short fibers such as pulp While the components are transported from the primary side by the rotary transfer filtration mechanism 1, they are stirred, cut, and crushed between the rotating action of the rotary transfer filtration mechanism 1 and the inner periphery of the filter cylinder 6 and crushed. A refined okara manufacturing method, characterized in that it is obtained as secondary okara a _{2 in} a finer state than the filtering holes.
[Selection] Figure 1

Description

  The present invention relates to a method for producing refined okara and refined okara, which effectively uses the okara produced in the tofu production process as a food material and has improved the disadvantage of being wasted as industrial waste.

  In general, the amount of okara obtained in the manufacturing process of tofu is said to be 800,000 tons per year in Japan, and some of it is used as fertilizer, but most of it is disposed of as industrial waste.

  Okara is certainly abandoned as a tofu-making dregs, but since ancient times it has been popular with many Japanese as a traditional ingredient rich in dietary fiber and has made its tabletops popular.

  However, the tofu shop in the town has disappeared and it has come to buy tofu at supermarkets, making it impossible to purchase okara itself, and most of them are not on the market now. It can be said that the situation has changed to an inconvenient food situation that is exclusively treated as industrial waste.

  It is known as an extremely nutritious food for ancient Japanese okara called “bamboo flowers” or “not cut”. In particular, it contains proteins, saponins, lecithin, choline, polyphenols, linoleic acid, minerals, etc., and has a healthy effect such as prevention of constipation and satiety. Disposing this as industrial waste is a matter of food circumstances. It was said to be extremely useless for improvement.

  On the other hand, recently, a tendency to reuse the okara disposed as industrial waste has started to appear, and a processing method for producing higher quality okara has come to be known (for example, patent document). 1, see Patent Document 2).

Also known is a method and apparatus for rotating the food ingredients by means of a screw rotatably arranged on the cylinder barrel, transferring and coarsely pulverizing and accumulating them, and passing the screen through the screen provided at the tip. (For example, see Patent Document 3 and Patent Document 4).
JP 2007-61005 A JP 2002-199853 A Japanese Patent No. 3612014 JP 2002-112884 A

  All of the methods for manufacturing okara shown in Patent Document 1 and Patent Document 2 are not mechanical treatments, but special heat treatments or retort heat treatments are performed, and large amounts of okara are efficiently processed in a short time. There is a problem that it cannot be handled well.

  Further, Patent Document 3 and Patent Document 4 show a method and apparatus as a backside, but rotation compression is mainly used, and a kind of hand-grip action such as cutting and crushing is almost impossible, and the fiber is not good. It is inadequate for the purification of okara that is long and hard, and the production of a large amount of waste is not negligible.

  The present invention has been made paying attention to the above points, and a large amount of okara produced is further separated by one or more mechanical rotation transfer filtration or rotation transfer mechanism and refinement mechanical mechanism. An object of the present invention is to provide a high-quality, high-value-added okara-purified okara manufacturing method and a purified okara that are processed to form high-quality fine particles.

  This invention can solve the said subject by providing the following structures.

  (1) A screw or the like that is obtained by separating the primary okara obtained by separating soy milk as a raw material of tofu into water and adding it to a cylindrical or conical outer periphery in a filter cylinder provided with a filter hole. To the rotary transport filtration mechanism, and the solid components of the long fibers such as bean hulls and hypocotyls contained in the primary okara components and the solid content of the short fibers such as fruit pulp by the rotary transport filtration mechanism. While transferring the ingredients from the primary oak, stirring, cutting, crushing and crushing between the rotating action of the rotary transfer filtration mechanism and the inner circumference of the filter cylinder, A method for producing purified okara, which is obtained as secondary okara.

  (2) A screw or the like that is obtained by separating the primary okara obtained by separating soy milk, which is a raw material of tofu, into a cylindrical or conical outer periphery provided with a filter hole in a cylindrical or conical shape. To the rotary transport filtration mechanism, and the solid components of the long fibers such as bean hulls and hypocotyls contained in the primary okara components and the solid content of the short fibers such as fruit pulp by the rotary transport filtration mechanism. While transferring the ingredients from the primary oak, stirring, cutting, crushing and crushing between the rotating action of the rotary transfer filtration mechanism and the inner circumference of the filter cylinder, In addition to being obtained as a secondary okara, the filtered solid content from the secondary okara is further subjected to two or more repetitive filtrations in a filter cylinder having a rotary transfer filtration mechanism provided with a filter hole smaller than the filter hole. , 3rd okara, 4th okara ... Purification Okara manufacturing method to be with.

  (3) The secondary okara obtained in the above (1) or (2) is made non-hydrous or hydrolyzed and subjected to a cutting process through a micro-mechanical mechanism such as cutting or gliding so as to make it fine. A method for producing purified okara, comprising:

  (4) Enclosed purified okara obtained by the method for producing purified okara according to any one of (1) to (3) above in a sachet and either boiled in heated hot water or directly frozen Purified okara, which is characterized by being obtained.

  According to the present invention, the raw okara obtained by the usual conventionally known means is the primary okara, and the solid content of this raw okara is mainly excluded from the long fiber bean hulls and hypocotyls. The primary okara by rotation mechanical processing of bean hulls and remaining soybean components is used for the loosening action including rotation, transfer, agitation, cutting and grinding, and fine solid and coarse solids by filtration. In order to obtain a secondary okara that has been effectively separated and refined by taking out a large amount of fine solids, it can be obtained as a high-quality okara, and when further refined, it can be gliding or High quality fine okara can be obtained by cutting.

  Furthermore, it is possible to obtain a refined third-order, fourth-order,. .

  Moreover, it may be hydrated and boiled in warm water, and can be stored for a long period of time or shipped and transported by hermetically sealing the whole and freezing it.

  In this way, as well as the second okara, the third okara and the fourth okara have a finer texture than the conventional okara, and the texture is mellow and nutritious. It can be edible as a new okara on a table, and can be widely used as a filling additive for natural foods such as various breads and biscuits if it is made into a paste.

  Furthermore, according to the present invention, the solid and solid particles of the okara components are made finer and the waste components can be significantly reduced by reversing the filtration and transfer treatment.

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to examples.

  The first embodiment of the present invention will be described below with reference to FIG.

  FIG. 1 shown in the drawing is a block diagram illustrating a method for producing purified okara according to the present invention, which is explained in each step.

  (I) shows the production process from the first okara, and shows the production process from okara obtained during normal tofu production.

  As a raw material, whole soybeans or whole soybeans are screened by adding moulted soybeans, or only moulted soybeans are sorted, and after removing impurities, they are washed with water. Then, it is soaked in water for the required time, and then the soy material soaked in water is ground and ground, and the finely crushed soy bean juice is boiled, heated, and then separated into soy milk and okara.

  In this case, a domestic manual operation or mechanized mass production operation may be performed depending on the size of the soy milk manufacturer, such as a grinding machine for the grinding treatment and a filtration machine for separation from soy milk.

Thus, all the okara a ₁ obtained in the conventional process is included in the manufacturing process (I) from the first okara in the present invention. Okara (primary okara) a ₁ separated from soy milk is in a water-containing state, but its basic form is solid, and is a long fiber component that is not desirable for edible use, such as the hypocotyl, soybean hull, or the eggplant component. However, it contains other nutritious nutrients as a solid content of short fibers.

(II) is the manufacturing process of the secondary okara a ₂ provided with the rotary transfer filtration mechanism 1, and (III) is the fine okara a ₂ provided with the micronization mechanical mechanism 2 that performs continuous or batch-type cutting gliding processing. high quality manufacturing process to obtain the _-1, (IV), the hermetic seal 3, boil heat treatment 4, it is possible to freezing 5 performs get the goods _{a 1, a 2, a 3} , a 4 purification Okara The commercialization process is shown.

FIG. 2 and FIG. 3 show the details of the manufacturing process (II) of the second okara a ₂ based on the rotary transfer filtration mechanism 1 in the present invention and the outline in the case of repeated repetitive use.

  Specifically, it is preferable to apply the axial flow type throttle device disclosed in Japanese Patent No. 3574833 developed by the present applicant, which will be described below.

Reference numeral 6 denotes a filtration mechanism, which is basically a cylindrical or conical filtration cylinder having a large number of filtration holes 7 formed on the outer periphery, and 8 is a rotary drive provided with a screw 9 inserted into the filtration cylinder 6. Means 10 is a supply section for charging the primary okara a ₁ , 11 is a waste extraction section provided at the tip of the filter cylinder 6, and a valve 12 can be provided to freely adjust the opening degree. 13 shows the extraction part of refined okara (second okara) a ₂ . In the second okara manufacturing process (II), the size of the filter hole 7 of the filter cylinder 6 is continuously made “small”, and the second stage (S-) is followed by the first stage (S-1). 2) More refined purified okara can be obtained continuously with the third stage (S-3).

  Reference numeral 19 denotes a storage portion in which the filtrate is opened at the lower part of the outer periphery of the filter cylinder 6, and 20 denotes a scraper provided at the blade end of the screw 9, which is rubbed against the filter hole 7. Plays the role of crushing and refining particles.

  Reference numeral 21 denotes a rotary shaft provided at the base end of the screw 9, and 22 denotes an inner sleeve disposed on the central axis of the screw 9 on the central axis of the shaft 21, and the shafts 22a and 22b are not engaged with the rotary shaft 21. Alternatively, the secondary rotation is possible at a low rotation, and one or more slots 23 of the bypass channel are provided on the outer periphery of the inner sleeve 22 to prevent clogging of okara particles. Reference numeral 24 denotes a waste passage portion, and the opening degree can be adjusted by the adjusting plate 25.

In the above-described configuration, the rotational driving means 8 is rotationally driven by a desired drive source, and at the same time, the primary okara a ₁ is sequentially supplied to the supply unit 10 without or with water.

Sequentially supplied primary okara a ₁ is subjected to the twisting action and forward action of the screw 9 and is subjected to stirring and kneading action, and at the same time, the outer peripheral surface of the screw 9 and the inner peripheral surface of the filter cylinder 6 The primary okara a ₁ supplied during the period is crushed and at the same time undergoes a cutting action, undergoes a miniaturization treatment, and promotes the miniaturization of the particles by a kind of squeezing (see FIG. 4). ).

  In addition, when the clogging phenomenon tends to occur among the ingredients from the transport, the bypass channel is formed by the configuration of the groove 23 provided on the outer periphery of the inner sleeve 22 so that smooth transfer is performed. .

And the okara processed into the size which matched the size from the filtration hole 7 drilled in the filter cylinder 6 is obtained as the second okara a ₂ , and the large okara which is not filtered becomes waste. Then, the waste is taken out from the waste take-out part 11 through the waste passage part 24.

Since the secondary okara a ₂ itself obtained by the first stage (S-1) is also obtained as fairly fine and fine particles, as shown in FIG. not strained facilities or straining can be provided as a product a _1.

However, in order to obtain a more dense and fine karako, the second stage (S-2) and the third stage (S-3) can be continued and the filtration by the rotary transfer filtration mechanism 1 can be performed. In this case, when repeatedly performing the filtering action with the second stage (S-2) and the third stage (S-3), the size of the filtration hole 7 of the filtration cylinder 6 is set to “small”, so Are obtained as the third okara a ₃ and the fourth okara a ₄ . Then, the third okara a ₃ and the fourth okara a ₄ can be provided as products A _1a and A _1b by performing a commercialization step (IV).

  The rotary transfer filtration mechanism 1 illustrated in the first stage (S-1), the second stage (S-2), and the third stage (S-3) is the size of the filtration hole 7 of the filtration cylinder 6. Are different from each other, but the other configurations are the same.

  Specifically, the filtration hole 7 of the filtration cylinder 6 of each stage (S-1), (S-2), (S-3),... Is a wire C having a triangular cross section as shown in FIG. Table 1 shows a specific example in which a spiral slit S is provided between adjacent wires C and the width P of the slit S is varied.

  A screw 9 having a diameter of 15 cm, a rotation speed of 40 rotations per minute, a screw blade number of 5 times, and a filtration cylinder 2 having a total length of 0.6 m was used.

As can be seen from Table 1 above, 80% of the second okara a ₂ obtained from the first okara a ₁ to the first stage (S-1) is obtained as purified okara, and the second stage (S the -2) can be third Okara a ₃ obtained as finer Okara.

  In this way, by gradually reducing the size of the filtration hole 7 in the rotary transfer filtration mechanism 1, even finer purified okara can be obtained, and as a result, the waste okara waste is almost nutritious. Is low, resulting in indigestible food, and is obtained as an unnecessary residue.

Next, a specific example of the refined okara a _2-1 by the refinement mechanical mechanism 2 in the high quality manufacturing process (III) shown in FIG. 1 is shown in FIG.

That is, a taper screw 16 integrated with the straight screw portion 15 of the main shaft is provided opposite to the small taper screw 14, and the secondary okara a ₂ is cut from the hopper 17 such as kneading, crushing, and crushing. In addition, fine okara a _2-1 is obtained from the discharge port 18 under the mechanical grinding action by gliding.

  If the cutting or gliding process is insufficient, the okara components can be supplied by making a pair of screw configurations in which the pitch of the screw blades is different and the meshing portions are long.

  As described above, in the purification from okara using the rotary transfer filtration mechanism 1, a small amount of waste is inevitably generated. However, when the finer mechanical mechanism 2 is used, all the okara components are mechanically pulverized. The difference is that there is no waste generation due to the refinement of the components after receiving.

  In addition, about the filtration hole 7 of the filtration cylinder body in the rotary transfer filtration mechanism 1, the coil-shaped slit S formed between the adjacent wires C by winding the wire C of triangular section in a coil shape in this embodiment. Although it is used, a large number of small holes (punching holes), slit holes, etc. may be formed in the cylindrical body and used as filtration holes.

A block diagram illustrating the first embodiment of the method for producing refined okara according to the present invention for each process. A block diagram showing the second and subsequent manufacturing steps in FIG. Cross-sectional system diagram showing a detailed example of the rotary transfer filtration mechanism of the block diagram shown in FIG. Mechanical process explanatory drawing which refines the okara component of the rotary transfer filtration mechanism according to the present invention Longitudinal side view showing an example of an apparatus for performing cutting or gliding processing

Explanation of symbols

(I) Production process from the first okara (II) Production process from the second okara (III) High quality production process (IV) Commercialization process 1 Rotational transfer filtration mechanism 2 Micronization mechanism 3 Seal seal 4 Boil heat treatment 5 Freezing 6 Filtration cylinder (filtration mechanism)
DESCRIPTION OF SYMBOLS 7 Filtration hole 8 Rotation drive means 9 Screw 10 Supply part 11 Waste extraction part 12 Valve 13 Extraction part 14,16 Taper screw 15 Straight screw part 17 Hopper 18 Discharge port 19 Storage part 20 Scraper 21 Rotating shaft 22 Inner sleeves 22a and 22b shaft 23 bypass channel slot 24 waste passage portion 25 adjustment plate a ₁ primary Okara a ₂ second order Okara a _2-1 minute Okara a ₃ third Okara a ₄ 4th up for _{a 1, a 2, a 3} , a 4, a 1a, product C wire S slit P width of _{a 1b} purified okara from

Claims (4)

  Rotating and transporting the primary okara obtained by separating soy milk, which is a raw material for tofu, into a cylindrical or conical outer periphery in a filter cylinder provided with a filter hole in a cylindrical or conical shape. Supplying to the filtration mechanism, the solid components of long fibers such as bean hulls and hypocotyls contained in the primary okara components and the solid content of short fibers such as pulp are firstly fed by the rotary transfer filtration mechanism. While the okara component is transferred, it is stirred, chopped and crushed between the rotating action of the rotary transfer filtration mechanism and the inner circumference of the filter cylinder, and is crushed to a fine state from the filter hole. A method for producing purified okara, which is obtained as okara.   Rotating and transporting the primary okara obtained by separating soy milk, which is a raw material for tofu, into a cylindrical or conical outer periphery in a filter cylinder provided with a filter hole in a cylindrical or conical shape. Supplying to the filtration mechanism, the solid components of long fibers such as bean hulls and hypocotyls contained in the primary okara components and the solid content of short fibers such as pulp are firstly fed by the rotary transfer filtration mechanism. While the okara component is transferred, it is stirred, chopped and crushed between the rotating action of the rotary transfer filtration mechanism and the inner circumference of the filter cylinder, and is crushed to a fine state from the filter hole. In addition to being obtained as an okara, the filtered solid content from the secondary okara is further subjected to two or more repetitive filtrations in a filtration cylinder equipped with a rotary transfer filtration mechanism provided with a filtration hole smaller than the filtration hole. It is characterized by being obtained as the next okara, the fourth okara ... Purification Okara manufacturing method.   The secondary okara obtained in claim 1 or 2 is made non-hydrous or hydrolyzed and subjected to a cutting process through a micro-mechanical mechanism such as cutting or gliding to make it fine. Manufacturing method from purified okara.   The purified okara obtained by the method for producing purified okara according to any one of claims 1 to 3 is enclosed in a sachet and either boiled in heated hot water or directly frozen. Purify Okara to be.

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