JP2015149899A - Production technique for reducing radioactive material concentration of raw persimmon and dried persimmon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production method of a raw persimmon for reducing a radioactive material concentration and a production method of a dried persimmon for reducing a radioactive material concentration.SOLUTION: The production method of the raw persimmon comprises: a production step of persimmon vinegar in which a raw material is mixed with zeolite and is aged, when persimmon vinegar is produced by using a fruit of the persimmon containing radioactive materials; and a step of spraying the persimmon vinegar on a persimmon field where persimmon trees are planted permanently.

Description

  The present invention relates to a method for producing ginger for reducing the concentration of radioactive material, and a method for producing dried salmon for reducing the concentration of radioactive material.

  2. Description of the Related Art Conventionally, a method for producing dried rice cake by aging and drying ginger represented by plain coreless rice cake, bee rice cake, Saijo rice cake, and Ichida rice cake is known (Patent Document 1, Patent Document 2, etc.). .

  A common method for producing dried persimmons is to first harvest ginger from persimmon trees planted in a persimmon field, then ripen the harvested raw material persimmons and peel them. After that, the peeled raw material basket is hung on a string or the like, and after being subjected to sterilization treatment, oxidation prevention treatment, and dust removal treatment, it is hung outside in a well-ventilated cabin or eaves and aged and dried. After that, it is transported indoors from the outside, and finish drying is performed again indoors. Dried persimmons manufactured through these processes are shipped after selection, packaging, and inspection. Such ginger production, dried cocoon production, and shipping processes are now commonplace.

JP 2006-217852 A JP 2013-042752 A

  However, as a result of the explosion of the TEPCO Fukushima Daiichi Nuclear Power Station that occurred in March 2011, radioactive materials (mainly cesium 134,137) were diffused. In the production area of Anpomochi, the production of ginger and the production of dried persimmons are still in a state of self-sustained production in about half of the areas except for some low-concentration cesium areas (process resumption model areas) (2014) As of January). However, even in the processing resumption model area, only about one-tenth of ginger production can be shipped. This is because necessary inspections cannot be performed on the total production of dried persimmons due to various conditions such as a lack of cesium testing equipment. In this way, the concentration of radioactive material in ginger and dried persimmons cannot be reduced by any conventional method for producing dried persimmons. Therefore, in about half of the areas, ginger contains a high concentration of cesium. As a result, they are now self-sufficient in producing ginger and dried straw.

  Currently, under the guidance of the Ministry of Agriculture and Water and Fukushima Prefecture, the concentration of radioactive material cesium on the surface of trees is reduced by cutting bark with a high water pressure washer or a knife. However, in mature trees (especially bee and cocoons), cesium often enters and remains deep in the trunk, and when the concentration of radioactive material is high, about 10,000 becquerels / kg In some cases, the dose is measured. In addition, cesium has a molecular structure very similar to that of artificial or natural potassium, so cesium in the soil is absorbed by the roots of the tree, and nutrients containing cesium are brought to the tip of the fruit through the trunk. For this reason, even if it is a newly planted oak tree, naturally the cesium will accumulate in the oak fruit in the oak tree planted in the soil with high concentration of cesium.

  Currently, attempts to reduce the concentration of radioactive materials by spraying 200 kg of potassium silicate (cesium absorption inhibitor) and zeolite (cesium adsorbent) per 10 ares have already been carried out in paddy fields. Is not applied. This is because there is no guidance from the government. For this reason, every year many of the ripe persimmons are torn off and discarded in the fields surrounding the persimmons. Since the fruit of this cocoon is a fruit with a high cesium dose, if this fruit is left in the planting field, cesium will be reduced again to the planting field. This makes it impossible to produce safe ginger with a low dose over many years using this planting field.

  Thus, high concentrations of cesium may accumulate in ginger serving as a raw material for dried persimmons, and high concentrations of cesium can also be contained in the persimmons produced using this. In particular, dried cocoons are produced by drying and ripening ginger. Therefore, when dried cocoons are produced using conventional processing methods, the concentration of cesium per unit weight is 3% higher than that of ginger before processing. Results of up to 5 times higher have been reported by public experiments.

  For this reason, at present, there is a need for new production techniques for ginger that can regenerate planted fields containing radioactive substances and reduce the concentration of radioactive substances accumulated in ginger. In addition, there is now a need for new technology to produce safe dried straw with a low dose even when the ginger contains radioactive material.

Here, the inventor of the present invention has repeated a three-year demonstration experiment for the purpose of reducing the concentration of radioactive material in ginger and dried ginger, and as a result, new manure management technology and new seedlings for ginger production are obtained. We found a planting technique, a new peeling technique and a new wall thickness cutting technique for the production of dried persimmons. And by reducing the radioactive substance concentration to 10 becquerel / kg or less by such a number of technologies, the present invention restarts 100% of the production of dried potatoes, one of Japan's leading regional special products. It aims to make it possible.
Specifically, the present invention is specified by the following steps.

The first aspect of the present invention relates to a method for producing ginger.
In the production of ginger, first, koji vinegar is produced from koji fruits containing radioactive substances. At this time, the raw material of persimmon vinegar is mixed with a zeolite capable of adsorbing radioactive substances, and the mixture is aged. Thereby, persimmon vinegar is obtained.
Then, the vinegar produced in the above process is sprayed on the vineyard where the vines are planted. Persimmon vinegar may be diluted with water or the like, or the stock solution may be used as it is.

  Since the above-mentioned vinegar contains a lot of potassium, it can be made to grow a rich ginger by spreading it as a fertilizer in the vineyard. Moreover, since the vinegar is made by adding zeolite, the concentration of radioactive material is reduced, and even if it is sprayed on the vineyard, the radioactive material does not accumulate in the ginger. Moreover, since vinegar contains zeolite, it can adsorb radioactive substances contained in vineyards and reduce its concentration. Furthermore, since the vinegar contains zeolite, it can be prevented from absorbing the radioactive material by spraying it on the vineyard. As described above, according to the present invention, it is possible to use, as fertilizer, strawberries that have been disposed of as having a high radioactive substance concentration, and to remove radioactive substances from the soil of the vineyard. .

  The method for producing ginger according to the present invention further includes a step of digging up the top soil of the planting field to form a planting hole, a step of planting a persimmon tree in the planting hole to make a culvert field, and And a step of spraying persimmon vinegar. Persimmon vinegar may be diluted with water or the like, or the stock solution may be used as it is.

  As mentioned above, the concentration of the topsoil in planting fields may increase due to the accumulation of radioactive material. Therefore, excavation of the topsoil of the planting field at a certain depth or more to form a planting hole, and planting a tree in it, prevents radioactive substances such as cesium from being absorbed from the root of the tree. Furthermore, the excavated topsoil may have a high concentration of radioactive material. Therefore, this topsoil is sprayed with an undiluted or diluted solution of persimmon vinegar containing zeolite to reduce its radioactive substance concentration. Thereby, the soil can be regenerated.

The 2nd side surface of this invention is related with the manufacturing method of a dried persimmon.
In the method for producing dried potatoes according to the present invention, dried potatoes are produced using raw ginger produced by the production method according to the first aspect described above as a raw material.
As described above, the concentration of radioactive material is reduced in the ginger produced by the above production method. Therefore, safe dried cocoons can be provided to consumers by producing dried cocoons using this ginger.

  In the method for producing dried persimmons according to the present invention, it is preferable to include a step of exfoliating a pulp part having a thickness of 30 mm or more from the epidermis together with the epidermis when exfoliating the epidermis of the ginger.

  As a result of the verification experiment by the inventor of the present invention, it was found that in the pulp part inside from the skin of the ginger, the region up to about 30 mm from the skin is the limit point for the infiltration of the radioactive substance (cesium). In other words, it was revealed that a large amount of radioactive material was accumulated in the ginger from the epidermis to a site 30 mm away. For this reason, by peeling and discarding the pulp part from this epidermis to the 30 mm site, the other parts can be used safely in the production of dried straw. In this way, it is possible to produce dried straw with a very low concentration of radioactive material by peeling the ginger epidermis relatively thick.

  In the method for producing dried salmon according to the present invention, when peeling the skin of the ginger, a step of horizontally cutting off the top and bottom of the ginger to obtain a substantially disk-like material, and the skin remaining on the substantially disk-like material May be cut off vertically, or a step of hollowing out the flesh portion of the disk-shaped object may be included.

  As described above, in the present invention, it is preferable that the ginger epidermis is peeled thickly from the surface of 30 mm, and this technique can be applied to almost conical raw material rice cakes such as Hachiya rice cake, Saijo rice cake, and Ichida rice cake. Can be applied. However, it is difficult to peel the epidermis evenly because the flat coreless is a flat shape with a substantially quadrangular prism shape and the top is concave. Therefore, it is preferable to cut the epidermis and flesh part horizontally and vertically and peel them thickly for ginger that is difficult to peel normally (such as seedless plain nuclear anther). As a result, it becomes possible to produce dried straw with a reduced concentration of radioactive material.

  In the method for producing dried cocoons according to the present invention, it is preferable to peel 30 to 50% by weight of the ginger with respect to 100% by weight.

  The normal peel is 5 to 10% of thin peel for 100% by weight of the raw ginger, whereas the peel of the present invention is for 100% by weight of raw ginger. 30-50% thick peel. When dried cocoons are manufactured using the thick peel technology of the present invention, it is possible to reduce the concentration of radioactive material contained in dried potatoes by about half or less compared to dried cocoons obtained using conventional thin peel technology. It becomes.

  As described above, according to the ginger production method provided by the present invention, it is possible to regenerate a planting field containing a radioactive substance and to reduce the concentration of the radioactive substance accumulated in the ginger. In addition, according to the method for producing dried straw provided by the present invention, a safe dried straw with a low dose can be produced even when the ginger contains a radioactive substance. In this way, by reducing the concentration of radioactive material to 10 becquerel / kg or less, it becomes realistic to resume 100% of the production of dried rice cake (anpo rice cake), one of Japan's leading regional special products.

FIG. 1 is a flowchart showing the main steps of a ginger production method and a dried koji production method according to the present invention. FIG. 2 is a flowchart showing the manure management process. FIG. 3 is a flowchart showing a seedling planting process. FIG. 4 is a flowchart showing the dried cocoon manufacturing process. FIG. 5 is a perspective view schematically showing the thickness peeling method. FIG. 6 is a perspective view schematically showing the thickness cut method.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments described below, but includes those appropriately modified by those skilled in the art from the following embodiments.
In this specification, “A to B” means “A to B”.

(1. Ginger production method and dried cocoon production method)
FIG. 1 shows the main steps (main flow) of a ginger production method and a dried koji production method according to the present invention. Moreover, FIGS. 2-4 shows the process (subflow) which the production method of a ginger and the manufacturing method of a dried salmon follow.

  As shown in FIG. 1, a ginger production method is first performed in the present invention. The production method of ginger mainly includes a manure management process (S10) and a seedling planting process (S20). Moreover, in this invention, the manufacturing process (S30) of a dried persimmon is performed using the ginger produced through the manure management process (S10) and the seedling planting process (S20). Thus, the present invention aims to produce dried straw with a low radioactive substance concentration. Hereinafter, each process is demonstrated concretely.

  The “radioactive substance” referred to in the present specification is not particularly limited. Examples of the radioactive substance include radioactive cesium (cesium 137, cesium 157, etc.), iodine (iodine 131, etc.), uranium. (Uranium 232 etc.), plutonium (plutonium 238 etc.), thorium (thorium 232 etc.), and deuterium.

(2. Manure management process)
FIG. 2 is a flowchart of the cultivation management process (S10). In the fertilizer management process, the planting field where the trees are planted is adjusted. The fertilization management step (S10) includes a persimmon vinegar production step (S11) and a persimmon vinegar spraying step (S12).

  A persimmon vinegar manufacturing process (S11) is a process of manufacturing persimmon vinegar from the raw material of the persimmon containing a radioactive substance. When producing persimmon vinegar, the persimmon fruits used as raw materials are mixed and aged with zeolite that adsorbs radioactive substances. Persimmon vinegar can be produced by a known method other than the step of adding zeolite. In the vinegar production step (S11) of the present invention, zeolite is added to the raw material in producing vinegar according to a known method.

  If it demonstrates concretely, in the persimmon vinegar manufacturing process (S11) of this invention, the persimmon vinegar sprayed as a fertilizer will be manufactured to a planting field. As shown in FIG. 2, in the production process of persimmon vinegar, first, persimmon fruits are collected. Currently, in areas where radioactive material has spread, the persimmon fruit contains a lot of radioactive material, so this persimmon fruit is left in the planting field. If the seeds of the pods containing radioactive material are left as they are, the radioactive material will be reduced again to the planting field. This makes it impossible to use this planting field to harvest safe ginger with a low dose over many years. Therefore, in this vinegar production process (S11), it is preferable to collect the fruit of the cocoon discarded in the vineyard in the area where the radioactive material is diffused and reuse it for the production of vinegar. The collected berries are stored in a container such as a plastic bucket. After that, the zeolite is put into a container in which the fruit of the cocoon is stored. Then, in a poly bucket, mash the coconuts lightly and mix the coconuts and zeolite. For example, when coconut is stored in a 400-liter plastic bucket, about 30 kg of zeolite may be added. The amount of zeolite charged can be adjusted as appropriate. For example, the zeolite may be added in an amount of 5 to 50% by weight or 10 to 40% by weight with respect to the total weight of the collected strawberries.

  Zeolite is a known substance. In the present invention, known zeolite can be used as appropriate. As an example of zeolite, synthetic zeolite such as X-type zeolite, Y-type zeolite, mordenite, ZSM-type zeolite, and natural zeolite can be used.

  After adding the zeolite, it is sufficient to follow a general manufacturing process of koji vinegar. In the present invention, vinegar is used for fertilizer, not edible, so lightly crushed the raw coconut, mixed with zeolite, left as it is, matured and fermented, A vinegar can be obtained. The ripening period of persimmon is preferably 2 months or more, 3 months or more, or 6 months or more, and particularly preferably 2 to 8 months, 3 to 10 months, or 6 to 12 months. Thus, in this specification, what matured the fruit of a persimmon is called "agar vinegar." As described above, persimmon vinegar can be produced simply by mixing zeolite with persimmon fruit and leaving it to stand. Therefore, persimmon fruit can be collected in the persimmon field and directly produced in the persimmon field. In other words, straw vinegar can be easily produced in a vineyard.

  Moreover, as a manufacturing method of persimmon vinegar, the manufacturing method of persimmon vinegar utilized for food can also be referred. For example, the method disclosed in Japanese Patent Publication No. 2007-295825 can be referred to for the production method of persimmon vinegar. Specifically, after the pods that are the raw material turn red and mature enough to be easily crushed by hand, the pods are crushed and charged into a fermentation tank. When crushing the fruit of a camellia, it is good also as adding yeast and carrying out alcoholic fermentation. After the persimmon fruit has fermented, the fermented moromi is squeezed to obtain the juice, and seed vinegar is added to denature the acetic acid. The acetic acid modification is preferably adjusted by adding glacial acetic acid or seed vinegar so that the concentration is 1.5% or more of the acetic acid concentration. Thereafter, the acetic acid-denaturing solution may be transferred to an acetylation tank, and acetic acid fermentation may be performed by transplanting an acetic acid bacteria membrane. The general production configuration of persimmon vinegar is as described above. In the case of persimmon fruit, since there is a large difference in carbohydrate content depending on the variety and cultivation conditions, various conditions may be adjusted as appropriate.

  Subsequently, in the persimmon vinegar spraying step (S12), the persimmon vinegar containing the zeolite obtained in the persimmon vinegar production step (S11) is sprayed on the planting field where the persimmon trees are to be planted. At this time, persimmon vinegar sprayed on the planting field may be diluted with water (persimmon vinegar diluted solution) or may be a stock solution (persimmon vinegar stock solution). When diluting persimmon vinegar, it is preferable to dilute persimmon vinegar to about 1/5 to 1/10, for example. In addition, the amount of koji vinegar can be appropriately adjusted. For example, when spraying a diluted vinegar solution, it is preferable to spray an amount of about 100 to 500 liters or about 200 to 300 liters per 10 ares.

  As mentioned above, the cultivation management process (S10) includes the operation of producing persimmon vinegar containing zeolite and spraying it on the planting field. Since vinegar is rich in potassium, it can be applied to fertilizer fields as a fertilizer to produce rich ginger on the vine. Moreover, since the vinegar is made by adding zeolite, the concentration of radioactive material is reduced, and even if it is sprayed on the vineyard, the radioactive material does not accumulate in the ginger. Moreover, since vinegar contains zeolite, it can adsorb radioactive substances contained in vineyards and reduce its concentration. Furthermore, since the vinegar contains zeolite, it can be prevented from absorbing the radioactive material by spraying it on the vineyard. As described above, according to the present invention, it is possible to use, as fertilizer, strawberries that have been disposed of as having a high radioactive substance concentration, and to remove radioactive substances from the soil of the vineyard. .

  In addition, the fertilization management process (S10) may include operations such as fertilization that are generally performed, watering, plowing, soil gathering, and pest control.

(3. Seedling planting process)
FIG. 3 is a flowchart of the seedling planting step (S20). In the seedling planting process, a work of planting a persimmon tree in a planting field to produce ginger and a work of regenerating the soil of the planting field are performed. As shown in FIG. 3, the seedling planting step (S20) includes a topsoil excavation step (S21), a seedling planting step (S22), and a vinegar diluted solution spraying step (S23). Moreover, the excavated soil collection process (S24) and the vinegar vinegar undiluted solution dispersion | distribution process (S25) for the purpose of soil reproduction | regeneration may be included.

First, in the topsoil excavation step (S21), the topsoil of the planting field is excavated to form a planting hole for planting a permanent tree. The topsoil of the planting field is preferably excavated to a depth of at least 50 mm from the surface. For example, a planting hole formed by excavating a planting field preferably has a depth of about 50 to 1000 mm and an area of about 1 to 4 m ² when a single persimmon tree is planted. It is preferable. By removing the topsoil from the planting field, it is possible to remove the parts where radioactive materials seem to have accumulated. As a result, the amount of radioactive material absorbed from the roots of the oak tree can be reduced.

  Thereafter, in the seedling planting step (S22), the seedling of the seedling is planted in the planting hole formed in the topsoil excavation step (S21).

  Subsequently, in the vinegar dilute solution spraying step (S23), after the seedlings of the persimmon tree are planted (S22), the dilute solution of the vinegar containing zeolite produced in the vinegar vinegar production step (S11) is sprayed on the vineyard. To do. As the vinegar vinegar diluted solution, it is preferable to use a vinegar vinegar diluted with water to about 1/5 to 1/10. Here, in addition to the vinegar diluted solution containing zeolite, it is also possible to spray zeolite or potassium silicate. The amount of vinegar diluted solution, zeolite, and potassium silicate can be appropriately adjusted. In this embodiment, the diluted vinegar is sprayed in S23. However, the vinegar can be sprayed as it is. By spraying a diluted solution (or undiluted solution) of vinegar containing zeolite into the vineyard after planting the vineyard seedling, it is possible to prevent the radioactive material contained in the vineyard from being absorbed by the birch tree.

  On the other hand, after the topsoil excavation step (S21), it is preferable to perform the excavation soil collection step (S24) for the purpose of soil regeneration. In the excavated soil collection process, the soil excavated from the planting field is collected in one place or multiple places and collected. Then, in the vinegar vinegar stock solution spraying step (S25), the stock solution of the vinegar containing the zeolite produced in the vinegar vinegar production step (S11) is sprayed on the collected soil. Here, in addition to the vinegar diluted solution containing zeolite, it is also possible to spray zeolite or potassium silicate. The amount of vinegar diluted solution, zeolite, and potassium silicate can be appropriately adjusted. In this embodiment, in S25, the stock solution of persimmon vinegar is sprayed. However, persimmon vinegar can be diluted and sprayed. By spraying an undiluted solution of vinegar containing zeolite into the soil collected by excavation, the radioactive material contained in the soil can be adsorbed and the soil can be regenerated.

  As described above, excavation of the topsoil of the planting field at a certain depth or more to form a planting hole and planting a tree in it prevents the radioactive material such as cesium from being absorbed from the root of the tree To do. Furthermore, the excavated topsoil may have a high concentration of radioactive material. Therefore, this topsoil is sprayed with an undiluted or diluted solution of persimmon vinegar containing zeolite to reduce its radioactive substance concentration. Thereby, the soil can be regenerated.

  In addition, a well-known technique can be utilized suitably in the seedling planting process (S22). After the seedlings are planted, the seedlings are grown in the usual way, and the saplings become ginger. In particular, in the present invention, it is preferable to grow persimmon using persimmon vinegar containing zeolite as a part of fertilizer. In this invention, since the vinegar containing a zeolite is used as a fertilizer, the radioactive substance density | concentration of the ginger which becomes a persimmon can be reduced extremely. This makes it possible to produce safe ginger with a low dose.

(4. Dried persimmon manufacturing process)
FIG. 4 is a flowchart of the dried persimmon manufacturing process (S30). In the dried koji manufacturing process, dried koji is manufactured using raw ginger produced by the production method including the above-described fertilization management process (S10) and seedling planting process (S20). As shown in FIG. 4, the dried koji manufacturing process includes a peeling / cutting process (S 31), a sterilization / antioxidation / dust removal process (S 32), a dehumidification process (S 33), an aging process (S 34), and drying A process (S35) is included. In the present invention, a known technique can be used except for the peeling / cutting step (S31). For example, for the processes of S32 to S35, the technique disclosed in Japanese Patent Application Laid-Open No. 2013-042752 may be referred to.

  In the peeling / cutting step (S31), a special peeling operation or cutting operation is performed for the purpose of reducing the concentration of radioactive material in the dried straw. FIG. 5 is a cross-sectional view conceptually showing the peeling operation of the ginger 1. As shown in FIG. 5, in the peeling process, first, the top 3 including the gutter 1 of the ginger 1 is horizontally cut and cut off. Thereafter, the skin part 4 of the ginger 1 and the pulp part 5 inside the skin 4 are peeled relatively thickly. As a result, it is possible to obtain a peeled skin 6 from which the skin 4 has been removed.

  Here, the symbol T in FIG. 5 indicates the thickness from the skin 4 to be peeled to the pulp portion 5. In the present invention, the thickness T of the peel is preferably 30 mm or more. For example, the thickness T of the peel is preferably 30 to 60 mm, 30 to 50 mm, 30 to 40 mm, and particularly preferably 30 to 35 mm. That is, as shown in Examples described later, the inventor of the present invention has continued research on the distribution of radioactive substances (radiocesium) accumulated in ginger. It was clarified that a large amount of radioactive material was accumulated up to a thickness of 35 mm. And it was found that the concentration of the radioactive substance (radioactive cesium) was drastically reduced by peeling off the range of 30-35 mm thick part from the epidermis. For this reason, if the raw material which removed the thickness part from 30-35 mm from the epidermis is used as a raw material, the safe dried rice cake with a low radioactive substance density | concentration can be manufactured. Moreover, it becomes possible to manufacture a dried rice cake having a sufficient volume by stopping the thickness to be peeled off to about 35 mm or 50 mm from the epidermis.

  In addition, the thickness of ginger peeling will be examined from another point of view. That is, when peeling the ginger epidermis, it is preferable to peel 30 to 50% by weight of the ginger with respect to 100% by weight. In addition, ginger skinning is to remove most of the radioactive material (radioactive cesium) contained in the ginger by peeling the inner part of the ginger, including the ginger epidermis, at 30-50% by weight. Can do. For example, ginger peeling is preferably performed in the range of 30 to 50% by weight, 30 to 40% by weight, and 30 to 35% by weight.

  The skinning method shown in FIG. 5 can be applied to almost conical raw material rice cakes such as bee cake, Saijo coffee, and Ichida coffee. However, it is difficult to peel the epidermis evenly because the flat coreless is a flat shape with a substantially quadrangular prism shape and the top is concave. Therefore, we propose a cutting method to reduce the concentration of radioactive substances even in normal ginger that is difficult to peel (eg, plain seedless seedless seeds).

  FIG. 6 is a perspective view conceptually showing the cutting operation of the ginger 1. The dotted line shown in FIG. 6 is a cutting line indicating the cutting position of the ginger 1. As shown in FIG. 6A, first, the top 3 including the gutter 1 of the ginger 1 and the bottom 7 opposite to the top 4 are horizontally cut and cut off. As a result, as shown in FIG. 6B, a substantially disk-like object 8 having an upper portion and a lower portion that are flat is formed. Thereafter, in order to remove the skin 4 remaining on the disk-like object 8, the disk-like object 8 is vertically cut at three or more locations as shown in FIG. 6C, for example. In the example shown in FIG. 6C, the disc-like object 8 is cut vertically at four locations. As a result, as shown in FIG. 6 (d), a substantially square (quadrangular columnar) peeled wrinkle 6 can be obtained. On the other hand, in the example shown in FIG. 6 (e), the die portion is used to cut out the pulp portion excluding the skin of the disc-like object 8. In the example shown in FIG. 6 (e), a cylindrical punching die is used. Thereby, as shown in FIG. (F), the substantially columnar peeling peel 6 can be obtained. In this way, it is possible to produce dried persimmons with a reduced concentration of radioactive material by cutting the ginger epidermis and pulp parts horizontally and vertically and peeling them thickly.

  As shown in FIG. 6 above, when ginger is cut, it is basically preferable that the thickness of the portion to be removed be a portion of 30 mm or more inward from the epidermis. Specifically, when the top and bottom of the ginger are cut horizontally, it is preferable to cut the ginger at a thickness of 10 mm to 20 mm in the height direction of the ginger. Moreover, it is preferable to remove the obtained substantially disk-shaped material by horizontally cutting a portion having a thickness of 20 mm to 30 mm from the skin. Further, the cut around the substantially disk-shaped object may be a polygon more than a triangle, and the center part of the disk is cut out into a polygon by cutting out so as not to include a part having a thickness of 20 mm to 50 mm from the outer edge. It is good as well. In other words, by removing the concave head and bottom, which are difficult to peel in advance, in the height direction of the ginger, it is possible to peel the entire pod from the epidermis with a certain thickness. In the above-described cutting method, the thickness becomes 35 to 40% with respect to the weight 100 of the raw material koji. By stripping the flat ginger by the cutting method of the present invention, the concentration of the radioactive substance can be reduced by 60% or more in the dried cocoon of the present invention compared to the dried cocoon using the conventional peeling method.

  In addition, the dried persimmon manufacturing process shown in FIG. 4 may follow the method disclosed in Japanese Patent Application Laid-Open No. 2013-042752. This will be briefly described below.

  In the sterilization / antioxidation / dust removal treatment step (S32), the peeled skin moth is subjected to sterilization, oxidation prevention, and dust removal treatment. As for the sterilization, oxidation prevention, and dust removal treatment of the peel peel, for example, the peel peel may be fumigated with sulfur dioxide or may be subjected to hot water treatment. In particular, by performing hot water treatment, it is possible to clean even fine dust that has been difficult to find through the naked eye or a magnifying glass, and to perform sterilization / antioxidation treatment of peeled candy.

  In the dehulling step (S33), the dehulling of the peel peel is rapidly advanced in a period of about 2 to 4 days after the peel peel is placed on the mesh material. It is particularly preferable that the de-astringency step is 3 days. In the desiccation process, the indoor environment is set to high temperature, high humidity, and weak wind in order to complete the de-salting of the peeled candy. For example, in the astringent process, the room temperature is controlled to be 38 ° C to 40 ° C, the humidity is 50% to 60%, and the wind speed of the wind directly hitting the peeled skin is 2 m / sec to 3 m / sec. preferable.

  In the aging step (S34), the skin of the peeled cocoon is prevented from binding to the mesh material during the period of about 2 to 4 days from the end of the de-astringency step (S33), and the generation of mold is prevented. ， Promotes the ripening of peeled candy. The aging step is particularly preferably 3 days. In the aging process, the indoor environment is set to a slightly high temperature, a slightly low humidity, and a strong wind in order to prevent the binding of the peel skin and the generation of mold. Specifically, in the aging process, the indoor temperature must be strictly kept below 35 ° C and the humidity below 45%. For example, the indoor temperature is preferably set to 30 ° C. to 35 ° C., the humidity is set to 35% to 45%, and the wind speed is preferably set to a strong wind of 6 m to 7 m.

  In the drying step (S35), finish drying of the aged peel peel is performed in a period of about 1 to 3 days from the end of the aging step (S34). The drying process is particularly preferably 2 days. In the drying process, the indoor environment is set to slightly high temperature, low humidity, and medium wind in order to finish and dry the peel. For example, in the drying process, it is preferable to control the indoor temperature to 30 ° C. to 35 ° C., the humidity to 30% to 35%, and the wind speed to 2 m / sec to 4 m / sec.

  Through the de-astringent step (S3), the aging step (S4), and the drying step (S5), the raw material koji is de-astringed, aged, and dried to produce dried koji. In the production method of the present invention, it is possible to complete desiccation, ripening, and drying of dried persimmon in a period of at least 5 days and at most about 11 days. According to the present invention, compared with the conventional manufacturing method, it is possible to complete the dewatering, ripening and drying of the dried persimmon in a period of about 1/8 to 1/3. It becomes possible.

  Subsequently, experiments conducted by the inventor to arrive at the present invention will be described below as examples.

1. Tables 1 to 3 below show the effectiveness of thick peeled skin. From the skin, dried persimmon (anpo rice cake) produced using ginger (new skinning method) with a thickness of 30 mm or more on the inside from the skin. Dried persimmon manufactured using ginger (new thickness cut method) with a thick cut at 30 mm or more on the inside, and ginger (conventional peeling method) with 5 mm on the inside from the epidermis. It is compared with the dried potato that was produced.
In the new skinning method, the skin is peeled at 30 to 35% by weight with respect to 100% of the raw material weight. In the new thickness cut method, the skin is peeled at 35 to 40% with respect to 100% of the raw material weight. In the conventional peeling method, peeling was performed at 5 to 10% by weight with respect to 100% by weight of the raw material. All other processing conditions and manufacturing conditions were the same.

  As is clear from the experimental results in Tables 1 to 3 above, when dried cocoons are manufactured using raw ginger peeled by the new peel method or new wall thickness cut method, In comparison, in all the experimental results, it was found that the concentration of radioactive cesium contained in the dried persimmon was extremely low. That is, when dried cocoons are manufactured using the conventional peel method, the concentration of cesium per unit weight of dried potatoes (after processing) is about 3 to 5 times higher than that of ginger (before processing). . On the other hand, when the dried cocoon is produced using the new peeling method or the new thickness cut method, the cesium concentration per unit weight of the dried cocoon (after processing) is 0. 0 compared to the cesium concentration of the ginger (before processing). It is reduced to about 8 to 1.4 times.

  In this way, when the dried cocoon is produced using the conventional peeling method, the cesium concentration in the dried cocoon is much higher than the cesium concentration in the raw ginger. On the other hand, when the dried cocoon is produced using the new peeling method or the new thickness cut method of the present invention, even if the cesium concentration of the dried cocoon is lower or higher than the cesium concentration of the raw ginger. It was less than 5. For this reason, it turns out that the new peeling method or the new thickness cut method of the present invention has a remarkable effect in comparison with the conventional peeling method.

2. Effectiveness of fertilization management and seedling planting using persimmon vinegar containing zeolite Tables 1 to 3 below show that new persimmon seedlings are planted in a planting field that has been fertilized and managed using persimmon vinegar containing zeolite. The experimental results are shown.

  Planting of new seedlings (3 year old young trees) was carried out after the TEPCO Fukushima Daiichi nuclear power plant explosion accident (March 2011). The new seedlings were planted by peeling off the topsoil of the planting field at a depth of 50 mm and a width of 2 meters. In the spring of 2012, after planting the new rice seedlings, the planted field was sprayed with 300 liters of diluted vinegar vinegar diluted to 200 kg of zeolite, 200 kg of potassium silicate, 1/5 to 1/10 per 10 ares. In addition, the stripped soil was gathered in one place, and in the spring of 2012, 10 kg of zeolite, 10 kg of potassium silicate, and 10 liters of persimmon vinegar stock solution were sprayed per place. In autumn 2013, 10-20kg each of Ichida and Akafuji were harvested. The dose of cesium for ginger was 4.2 becquerels / kg for Ichida and 3.5 becquerels / kg for Akafuji. Dried persimmons were made from these ginger. The cesium dose for dried persimmons was 3.7 becquerels / kg at the Ichida clan and 3.2 becquerels / kg at the Akafuji clan.

  In this way, fertilizer management and seedling planting were performed using rice bran vinegar containing zeolite, so that the cesium dose of dried straw was less than that of ginger. The above experimental results are surprising in view of the fact that when raisins are produced by a general method, the cesium dose of raisins is 3-5 times higher than the cesium dose of the raw ginger. It can be said. As a result, the effectiveness of fertilization management technology and seedling planting technology using rice bran vinegar was demonstrated.

  Table 6 below shows the measurement experiment results of the cesium dose in the vineyard where the vinegar containing zeolite was continuously sprayed.

  As the persimmon vinegar, the one produced by storing the persimmon fruit, which has been thrown away at a high cesium dose, in a 400 liter container, charging and mixing 30 kg of zeolite mass, and aging for half a year was used. As shown in Table 6 above, it can be seen that the cesium dose decreases every year as the spraying of vinegar containing zeolite continues. From this point, it can be seen that the vinegar containing zeolite has the effect of reducing the concentration of radioactive substances.

  As mentioned above, in this specification, in order to express the content of this invention, embodiment of this invention was described, referring drawings. However, the present invention is not limited to the above-described embodiments, but includes modifications and improvements obvious to those skilled in the art based on the matters described in the present specification.

  The present invention relates to a production technique for reducing the concentration of radioactive material in ginger and dried persimmon. Therefore, the present invention can be suitably used in the dried cocoon production and processing industry.

DESCRIPTION OF SYMBOLS 1 ... Ginger 2 ... Stave 3 ... Top part 4 ... Epidermis 5 ... Flesh part 6 ... Peeling cocoon 7 ... Bottom part 8 ... Substantially disk-shaped thing

Claims (6)

A process for producing persimmon vinegar, in which persimmon vinegar containing radioactive material is used as a raw material to produce persimmon vinegar, which is aged by mixing zeolite with the raw material,
A method of producing ginger, comprising: spraying the vinegar on a vineyard in which a persimmon tree is planted. Digging the topsoil of the planting field to form planting holes;
A step of planting the coconut tree in the planting hole to form the vineyard;
The method for producing ginger according to claim 1, further comprising a step of spraying the koji vinegar to the dug up soil. A method for producing dried persimmons, comprising producing dried persimmons from raw ginger produced by the production method according to claim 1 or claim 2. 4. The method for producing dried persimmons according to claim 3, comprising peeling off the skin part of the ginger with a thickness of 30 mm or more from the skin when the skin is peeled off. In peeling the ginger epidermis,
Cutting the top and bottom of the ginger horizontally to obtain a substantially disk-shaped object;
The method for producing dried persimmons according to claim 3, further comprising a step of vertically cutting off the skin remaining on the substantially disk-shaped object or hollowing out a pulp portion of the disk-shaped object. The method for producing dried raisins according to any one of claims 3 to 5, wherein when peeling the skin of the ginger, a portion of 30 to 50% by weight is peeled with respect to 100% by weight of the ginger.

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