JP6273405B2 - Process for producing plant dry sheet food - Google Patents

Description

  The present invention relates to a method for producing a plant dry sheet food.

  As a dry sheet food that can be stored for a long period of time, such as dried seaweed, a plant dry sheet food obtained by processing plants such as vegetables or fruits into a sheet shape and drying has been proposed. Such plant dry sheet foods can be used for cooked foods in which dried laver has been mainly used, and have the effects that dried laver could not have due to nutritional components and colors contained in plants. Is.

  For example, in Patent Document 1, a plant piece is boiled and pulverized to form a mince, kneaded to form a paste, the paste is supplied onto the water-permeable sheet, and air is sucked from below the water-permeable sheet. The paste is made to have a uniform thickness and spread, and the pressed plate is lowered from above the paste, thinly extended into a sheet with a more uniform thickness, and then dried to produce a plant dry sheet food that is manufactured. Yes. Boiling is performed in a boiler container to promote gelatinization of the plant starch. The pulverization is performed in a mincing machine. The kneading process is performed with a stirring blade in a kneader so that the starch of the plant dissolves into a paste. Supply of the paste onto the water-permeable sheet is performed by dropping the paste onto the moving water-permeable sheet through a supply valve downward from the paste supply device. Air suction is performed by a vacuum tube through a moving water-permeable sheet. Drying is performed in a drying pot after pressing with a press plate.

  In Patent Document 2, a trehalose solution-substituted vegetable in which a certain percentage or more of the moisture in the tissue of the vegetable is replaced with a trehalose solution is used as a raw material, and a slurry obtained by crushing this is formed into a thin film and dried. Plant dry sheet food is described. The replacement with the trehalose solution is performed by immersing or contacting the vegetables in the trehalose solution. A high-speed stirrer is used for crushing. For forming a thin film, a papermaking method, a flow method, a doctor blade method, a roll coating method, or the like is used. For drying, sun drying, hot air drying, infrared drying, low temperature drying, freeze drying, reduced pressure drying and the like are used.

Japanese Patent Laid-Open No. 08-332047 JP 2002-045143 A

  However, few plant dry sheet foods are currently available. The big factor is that the conventional plant dry sheet foods including Patent Documents 1 and 2 cannot be efficiently manufactured with the same strength as dry laver.

  This invention is made | formed in view of the reason which concerns, The objective is to provide the manufacturing method of the plant dry sheet foodstuff which can manufacture what has intensity | strength efficiently.

In order to achieve the above-mentioned object, the method for producing a plant dry sheet food according to claim 1 adds a thickening polysaccharide to a plant material that is crushed into a juice or a paste by finely crushing the plant. a spraying material generating step of generating a spray material by the spray material, a plurality of spray holes of the nozzle end through one of the cutouts pattern of a predetermined shape formed with a plurality of the mask body, rotated and heated A spraying step of forming a sheet-like deposit by spraying toward a cylindrical or columnar drying plate body, and a drying step of drying the sheet-like deposit with the heat of the drying plate body. It is characterized by becoming.

The method for producing a plant dry sheet food according to claim 2 is the method for producing a plant dry sheet food according to claim 1 , wherein, in the spraying step, the mask body has a cylindrical shape and is rotated. The nozzle end is disposed inside the mask body.

  According to the method for producing a plant dry sheet food according to the present invention, a strong plant dry sheet food can be efficiently produced by the above-described spray material generating step, spraying step, and drying step.

It is a schematic diagram which shows the stirrer and vacuum pump which are used for spin-drying | dehydration of the plant material in the spraying material production | generation process of the manufacturing method of the plant dry sheet | seat foodstuff concerning embodiment of this invention. It is typical front view sectional drawing which shows the spray drying apparatus used in the spraying process and drying process of the manufacturing method of a plant dry sheet food same as the above. It is typical sectional view sectional drawing which shows the spray drying apparatus used in the spraying process and drying process of the manufacturing method of a plant dry sheet food same as the above. It is typical front view sectional drawing for demonstrating the spraying process of the manufacturing method of a plant dry sheet food same as the above. It is typical sectional view sectional drawing for demonstrating the spraying process of the manufacturing method of a plant dry sheet food same as the above. It is typical front view sectional drawing for demonstrating the nozzle end position adjustment process of the manufacturing method of a plant dry sheet food same as the above. It is typical front view sectional drawing for demonstrating the drying process of the manufacturing method of the plant dry sheet food same as the above.

  Hereinafter, modes for carrying out the present invention will be described. The method for producing a plant dry sheet food according to an embodiment of the present invention includes a spray material generation process, a spray process, and a drying process.

  The spray material generation process is a process of generating the spray material MA. In the spray material generation step, after washing plants such as vegetables or fruits, the plants are finely crushed by a grinder (for example, MKZA series manufactured by Masuko Sangyo Co., Ltd.) to obtain a juice-like or paste-like plant material. Plant fibers are also finely crushed. By doing so, the amount of water is, for example, about tomato juice or less depending on the type of plant.

  The juice-like or paste-like plant material is preferably dehydrated before the thickening polysaccharide described below is added, thereby making it possible to obtain a paste-like plant material with a low water content. The amount of water is, for example, about tomato ketchup or less depending on the type of plant. Although thickening polysaccharides can be added without dehydration, the amount of thickening polysaccharides can be reduced by this dehydration, thereby reducing costs and drying in the drying step described below. Can be made faster (the drying efficiency is improved).

  As shown in FIG. 1, a specific method of dehydration is to stir the juice-like or paste-like plant material introduced from the inlet 11 with a stirrer (for example, a ribbon blender) 1 and then emit it into the air. The water vapor S to be discharged can be discharged by the vacuum pump 2. The stirrer 1 is sealed inside, and is appropriately provided with an intake port 12 for sucking dry air. At this time, the temperature inside the stirrer 1 does not have to be high (for example, it can be set to room temperature), so that the juice-like or paste-like plant material can be prevented from being altered.

  And a thickening polysaccharide is added and mixed with the paste-like plant material which passed through dehydration. By increasing the viscosity with the thickening polysaccharide, it becomes possible to attach the sheet-like deposit MB to the drying plate body 6 to be described later in the drying process, and the finished plant dry sheet food MC is thin. However, it is possible to have strength. Preferred thickening polysaccharides are gum-based thickening polysaccharides such as xanthan gum and gum arabic. Xanthan gum is particularly preferable. As for the mixing ratio of the thickening polysaccharide, for example, the mass of the thickening polysaccharide can be about 1% to 5% of the mass of the plant material.

  The thickening polysaccharide tends to harden locally (it is easy to get lumps), so that it should be mixed well so that it does not exist. Then, the plant dry sheet food MC to be completed can be easily and evenly, that is, non-biased as a whole. A preferable addition mixing method of the thickening polysaccharide is that after adding water to the thickening polysaccharide in a powder state and well dispersing it with a disperser (for example, L5 series manufactured by Silverson) to make a paste, for example, a paste It is a method of adding to the plant material and mixing. Mixing can be carried out by stirring with the above stirrer 1 or optionally another stirrer.

  In the spraying process and the drying process, the spray drying apparatus 3 shown in FIGS. 2 and 3 is used.

  As shown in FIG. 3, the spray drying device 3 includes a sprayer 4. The sprayer 4 includes a temporary storage tank (hopper) 41, a compressor 42, a lead-out pipe 43, and a nozzle 44. In the spraying process, the spraying material MA generated in the spraying material generating process is put into the temporary storage tank 41. Then, the spray material MA is pushed by the compressor 42 in the spray machine 4, and blows out from a blow hole (for example, about 0.5 mm in diameter) formed in the nozzle end 44 a of the nozzle 44 through the thin outlet pipe 43. . The spray material MA is blown out from the blow hole within a range of a predetermined angle (for example, about 10 ° to 20 °) from a direction perpendicular to the end face of the nozzle end 44a (see FIGS. 4 and 5). .

  In this embodiment, the nozzle 44 is a flat nozzle, and the end surface of the nozzle end 44a is rectangular. The size of the end face of the nozzle end 44a and the number of blow holes are appropriately selected. For example, the short side is about 1 cm, the long side is about 15 cm, and the number of blow holes is about 10 and one row. can do.

  The spray drying device 3 includes a mask body 5 and a drying plate body 6.

  The mask body 5 is made of a metal plate (for example, a stainless steel plate), and has a cylindrical shape (for example, a width (length in the left-right direction in FIG. 3) of about 25 cm) with a predetermined diameter (for example, about 25 cm). It is. A plurality of cutout patterns 50 are formed on the mask body 5 according to the shape and size of the finished plant dry sheet food MC. The shape of the cutout pattern 50 can be any shape other than a typical one such as a rectangle or a square. A plurality of cutout patterns 50 are formed in the circumferential direction of the cylindrical mask body 5, but in addition, a plurality of cutout patterns 50 may be formed in the width direction of the mask body 5 according to the size of the cutout pattern 50. .

  The metal plate of the mask body 5 may be thin (for example, a thickness of about 1 mm), and the cutout pattern 50 may be formed on the mask body 5 by controlling the laser according to the pattern data stored in the personal computer. it can. Therefore, it is possible to prepare the mask body 5 of the cutout pattern 50 according to the shape of the finished plant dry sheet food MC easily and inexpensively.

  As shown by a solid line with an arrow in FIG. 2, the mask body 5 rotates at a predetermined speed (for example, one rotation in about 10 seconds). The nozzle end 44 a of the nozzle 44 is installed inside the mask body 5. The end surface of the nozzle end 44 a is arranged toward the drying plate body 6 so that the spray material MA is sprayed toward the drying plate body 6. That is, the mask body 5 in which the cut pattern 50 is formed is disposed between the nozzle end 44 a and the drying plate body 6. The end surface of the nozzle end 44a may be usually vertically upward.

  The drying plate body 6 is made of a metal plate (for example, a stainless steel plate) and has a cylindrical or columnar shape (for example, a width (left and right direction in FIG. 3) having a larger diameter (for example, about 80 cm) than the mask body 5. Is about 30 cm). The dry plate body 6 rotates at a predetermined speed (for example, one rotation in about 40 to 50 seconds) as shown by a solid line with an arrow in FIG. In addition, the drying plate body 6 is heated by a heating element (not shown) to a high temperature (for example, about 140 ° C. to 160 ° C.). The surface of the dry plate body 6 is coated with a fluororesin or the like.

  In the spraying process, the spray material MA blown out from the nozzle end 44 a is sprayed toward the drying plate body 6 through the cutout pattern 50 formed in the mask body 5 by such a configuration of the spray drying apparatus 3. The spray material MA sprayed onto the drying plate body 6 adheres to the drying plate body 6 and forms a sheet-like deposit MB.

  More specifically, in the nozzle 44, the long side of the rectangular end surface of the nozzle end 44a is parallel to the width direction and the short side of the cylindrical or columnar drying plate body 6 is parallel to the circumferential direction (rotation direction). It is arranged to be. In the spraying process, the same amount of the spray material MA is always blown from the nozzle end 44a without interruption. 4A, when one edge of the cutout pattern 50 is turned, the spray material MA is sprayed through the cutout pattern 50 toward the dry plate body 6. As shown in FIG. Begin to be caught. Then, as shown in FIG. 4B, the spray material MA is continuously sprayed toward the drying plate body 6 through the cut pattern 50. And as shown in FIG.4 (c), when the other edge part of the cutout pattern 50 comes around, the spraying to the dry plate body 6 will be complete | finished. When viewed from the side, the spray material MA is sprayed as shown in FIG.

  As the mask body 5 is rotated and the drying plate body 6 is also rotated, by spraying the spray material MA onto the drying plate body 6, as shown in FIGS. A sheet-like deposit MB having a shape corresponding to the cutout pattern 50 is formed on the dry plate body 6. The thickness of the sheet-like deposit MB can be adjusted by the amount of the spray material MA blown from the nozzle end 44a, the rotation speed of the mask body 5, and the like. Thereby, even if the sheet-like deposit MB is thin, it can be set to a stable and uniform thickness.

  The size of the sheet-like deposit MB is a size in which the cutout pattern 50 is enlarged in a similar shape according to the distance from the nozzle end 44a to the cutout pattern 50 and the distance from the cutout pattern 50 to the dry plate body 6. become.

  It is also possible to adjust the size of the sheet-like deposit MB by providing a nozzle end position adjusting step for adjusting the distance from the nozzle end 44a to the cutout pattern 50 before the spraying step. For example, as shown in FIGS. 6A to 6C, when the distance from the nozzle end 44a to the cutout pattern 50 is larger than that shown in FIG. 4, the sheet shape is more than that shown in FIG. The deposit MB can be enlarged in a similar manner.

  Further, the spray material MA blocked by the mask body 5 (by a portion other than the cutout pattern 50) adheres to the mask body 5 and rotates together with the mask body 5, and is sprayed by the spray material recovery machine 7 as shown in FIG. It is scraped off and collected and reused. In FIG. 2, the spray material recovery machine 7 shows a scraping tool 71 that scrapes off the spray material MA, and a recovery carrier 72 that moves the spray material MA to a recovery container (not shown). Since the mask body 5 may be at room temperature, the recovered spray material MA is not altered. As described above, the spray material MA is very little and is used efficiently.

  Next, in the drying step, the sheet-like deposit MB rotates with the rotation of the drying plate body 6, and is dried by the heat of the drying plate body 6 during that time. Then, the sheet-like deposit MB is completed as the plant dried sheet food MC when the sheet-like deposit MB rotates together with the dry plate body 6 to about 180 ° or more. The plant dry sheet food MC is collected by the collector 8 as shown in FIG. The collector 8 has a collection peeling tool 81 that contacts or almost contacts the drying plate body 6, and peels off the plant dry sheet food MC from the drying plate body 6 by the collection peeling tool 81. It is moved by a collection carrier 82 to a subsequent processing machine for packaging and the like.

  The plant dry sheet food MC produced in this way has the same strength as the dried nori and can be cracked even if bent slightly.

  Further, in the method for producing a plant dry sheet food according to the embodiment of the present invention, the sheet-like deposit MB formed on the dry plate body 6 by spraying becomes the plant dry sheet food MC as it is (without requiring cutting or the like). This is efficient because the spray material MA blocked by the mask body 5 is collected and reused.

  As mentioned above, although the manufacturing method of the plant dry sheet | seat food which concerns on embodiment of this invention was demonstrated, this invention is not restricted to what was described in the above-mentioned embodiment, and was within the range of the matter described in the claim. Various design changes are possible. For example, the size of the mask body 5 and the drying plate body 6, the rotation speed, and the like can be appropriately changed according to the plant dry sheet food MC.

DESCRIPTION OF SYMBOLS 1 Stirrer 2 Vacuum pump 3 Spray drying apparatus 4 Spraying machine 44 Nozzle 44a Nozzle end 5 Mask body 50 Cutout pattern 6 Drying plate body 7 Spraying material collection machine 8 Collector S Water vapor MA Spraying material MB Sheet-like deposit MC Plant dry sheet food

Claims (2)

A spray material generating step of generating a spray material by adding a thickening polysaccharide to a plant material made into a juice or paste by finely crushing a plant, and mixing,
The spray material, a plurality of spray holes of the nozzle end through one of the cutouts pattern of a predetermined shape formed with a plurality of the mask body, the drying plates of the cylindrical or columnar shape are rotated heated A spraying step of forming a sheet-like deposit by spraying toward,
A drying step of drying the sheet-like deposit with heat of the drying plate body;
A method for producing a plant-dried sheet food, comprising: In the manufacturing method of the plant dry sheet food of Claim 1 ,
In the spraying step, the mask body has a cylindrical shape and is rotated, and the nozzle end is disposed inward of the mask body.

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