JP5809763B1 - Barley-derived polyphenol production method, barley outer layer recovery device, and barley outer layer recovery method - Google Patents

Abstract

The present invention provides a method for producing polyphenols as a method of utilizing barley straw that has been used only as an industrial waste for animal feed and a shochu waste liquid treatment product. Moreover, this method is a method which can industrially mass-produce polyphenol derived from barley. A method for producing a polyphenol derived from barley, comprising recovering barley outer layer mash produced in a mashing process having a weight yield ratio of 85% to 98% by weight in the mashing process of barley, A method for producing a polyphenol, comprising extracting. [Selection] Figure 5

Description

The present invention relates to a method for producing barley-derived polyphenol, a device for recovering barley outer layer straw using barley-derived polyphenol as a production raw material, and a method for recovering barley outer layer straw using the device .

  Barley is a cereal that does not fall under any of 27 items in total, including 7 specified raw materials required for allergy labeling under the Food Sanitation Law and 20 specified items that conform to the recommended specified raw materials. . Barley includes Nijo barley, Rokujo barley, barley, and bare barley, but these barleys mainly consist of the endosperm part obtained by scouring the barley's outer skin, fruit skin, seed skin, etc. What is called barley refined wheat is used for food. The portion corresponding to the outer skin, pericarp and seed coat generated during the process of barley processing (polishing) is called barley straw and is mainly used as livestock feed.

  Patent Document 1 focuses on the removal of polyphenols contained in barley straw, and attempts to reduce the water-soluble polyphenols in barley straw by performing alkaline water treatment or the like. On the other hand, Non-Patent Document 1 conducts research focusing on polyphenols contained in barley straw, and examines the possibility of use in foods as natural antioxidants. In addition, research on the component characteristics of barley meal has been conducted, and it has been reported that barley meal can be expected to have an intestinal effect.

JP 2009-247229 A

Koji Tamagawa, “Study on functional properties and utilization of polyphenol components in barley straw”, Journal of Japan Food Storage Science Society, VOL. 2,2001

  As described above, although the functionality of barley koji has been studied for some time, it has not been realized that polyphenols are actually extracted from barley koji and used as a functional food. This is because the polyphenol content of barley and barley straw is very low, and it was considered that a sufficient amount as a polyphenol raw material could not be extracted in practice. Furthermore, at present, polyphenol is considered to be the cause of browning peculiar to barley, and there is a tendency to reduce the polyphenol content from the stage of breeding new varieties of barley and increase the value as edible wheat. .

Conventionally, barley pearls are produced by a method in which the paste layer is gradually scraped off from the barley hull with a milling machine. And as the barley koji, the portion refined to a yield of about 50% to 85% by weight ratio of barley is recovered. In the above-mentioned patent document 1, although the barley straw contains more polyphenol than wheat, the content is 560-690 mg / 100 g in untreated barley straw (yield 65-85 wt%). Thus, the concentration was not necessarily high. Moreover, although the polyphenol is included as an unpleasant component and its removal is being studied, it has not been studied for recovery.
Moreover, in the above-mentioned nonpatent literature 1, the barley koji produced in the barley kneading process performed using a plurality of kneaders was recovered by mixing the six barley koji koji (yield 80-90% classification), So-called mixed barley straw is used as it is. Again, the specific concentration is not mentioned. Under such circumstances, an industrially practical method for producing a polyphenol derived from barley has not been proposed.

  As a result of intensive studies to solve the above problems, the present inventor has found that the following inventions meet the above object, and have reached the present invention. The present invention has focused on polyphenols, which have an antioxidant action to prevent oxidation in most plants. In particular, polyphenols are extracted from barley, which is closely related to Japanese food culture.

  As described above, some of the so-called mixed barley meal obtained by mixing and recovering barley meal produced in the barley milling process performed using a plurality of rice milling machines has been studied as described in Patent Document 1 and Non-Patent Document 1. Has been made. The barley meal corresponding to the yield of interest in these documents mainly consists of an inner paste layer in which the portion corresponding to the hull of barley seeds is refined and removed in the barley refinement process. Conventionally, the portion corresponding to this paste powder layer is considered to have an almost uniform composition, and the whole amount is collected as a mixed barley meal and used as it is, and the polyphenol as this mixed barley meal is removed. However, even if attention was paid to polyphenol itself, its content was low, so it was considered that a sufficient amount could not be extracted in practice.

  The inventor has analyzed in detail the barley koji that has been mixed and recovered in a collective manner, although it usually occurs for each yield through a plurality of scourers. As a result, surprisingly, even in the yield part corresponding to the same paste powder layer, the content of polyphenols varies greatly depending on the thickness (yield) of the layer, It was discovered that a very large amount of polyphenol was contained in the near layer, and it was conceived that a sufficient amount of polyphenol could be produced by using barley straw corresponding to the yield of these specific ranges. Invented.

That is, the present invention relates to the following inventions.
<1> A method for producing a polyphenol derived from barley, wherein in the barley mashing process, barley outer layer mash produced in the mashing process having a weight yield ratio of 85% by weight to 98% by weight is selectively recovered from the barley koji. A method for producing polyphenols by extracting polyphenols.
<2> The method for producing a polyphenol according to <1>, wherein the barley is barley, and a weight yield ratio of the barley outer layer straw recovered in the scouring step is 85% to 95% by weight.
<3> The method for producing a polyphenol according to <1>, wherein the barley is bare barley, and a weight yield ratio of the barley outer layer straw recovered in the scouring step is 90% to 98% by weight.
<4> The milling process is performed with an apparatus having a plurality of milling machines, and barley koji corresponding to the weight yield ratio generated from the milling machine is selectively recovered as a barley mixing mill, and polyphenol is recovered from the barley mixing mill. The manufacturing method of the polyphenol in any one of said <1>-<3> to extract.
<5> Performing the milling process with an apparatus having a plurality of milling machines, taking out barley straw for each milling machine, and extracting polyphenols from the barley outer layer straw corresponding to the weight-yield ratio in the removed barley straw The method for producing a polyphenol according to any one of <1> to <3>.
<6> Performing the milling process with an apparatus having a plurality of milling machines, taking out barley straw for each milling machine, and mixing a plurality of barley outer layer straws corresponding to the weight yield ratio among the barley straws taken out The method for producing a polyphenol according to any one of <1> to <3>, wherein the polyphenol is extracted from the barley mixed straw.
<7> For the multiple varieties of barley, the milling process is carried out with an apparatus having a plurality of milling machines, and the barley outer layer mash corresponding to the weight yield ratio is taken out for each milling machine. The method for producing a polyphenol according to any one of <1> to <3>, wherein the polyphenol is extracted from the barley mixed straw obtained by mixing the barley outer layer straw corresponding to the weight retention ratio of the plurality of types of barley straw.
<8> A polyphenol derived from barley produced by the method for producing a polyphenol according to any one of <1> to <7>.
<9> Processed food containing the polyphenol according to <8>.

  According to the method for producing a polyphenol of the present invention, a polyphenol that can be industrially mass-produced can be produced from barley straw.

It is a schematic diagram which shows the structure of a barley seed. It is a figure which shows the outline | summary of the conventional barley milling apparatus. It is a figure which shows the outline | summary which concerns on 1st embodiment of the barley milling apparatus which can be used for the manufacturing method of the polyphenol of this invention. It is a figure which shows the outline | summary which concerns on 2nd embodiment of the barley milling apparatus which can be used for the manufacturing method of the polyphenol of this invention. It is a figure which shows distribution of polyphenol content for every weight yield of barley seeds. It is a figure which shows distribution of polyphenol content for every weight yield of barley seeds. It is a figure which shows distribution of polyphenol content for every weight yield of barley seeds.

  DESCRIPTION OF EMBODIMENTS Embodiments of the present invention will be described in detail below. However, the description of constituent elements described below is an example (representative example) of an embodiment of the present invention, and the present invention is described below unless the gist thereof is changed. It is not limited to the contents.

  The present invention is a method for producing a barley-derived polyphenol, and in the barley mashing process, barley outer layer mash produced in the mashing process having a weight yield ratio of 85% by weight to 98% by weight (85-98% by weight) is selected. And a method for producing a polyphenol, characterized in that the polyphenol is extracted from the barley outer layer straw. The present invention focuses on barley koji, where it was difficult to extract polyphenols from barley mixed koji, and selectively collects each extracted barley koji alone or in combination from each kneader, with a high concentration. Extracts polyphenols. Here, selectively collecting means to collect barley straw with a yield ratio in a target range so as to include 80% by weight or more, preferably 90% by weight or more, more preferably 95% by weight or more. It is most preferable to collect the product so that only the yield ratio in the target range is obtained.

  The present invention relates to a method for producing barley-derived polyphenols, and utilizes barley outer layer straw produced in the barley milling process. As barley, any barley such as Nijo barley, Rokujo barley, and bare barley can be used. Barley is wrapped in the outer skin at the seed stage immediately after harvesting, and there is a layer called pericarp or seed coat from the outside, and there is a layer called a paste layer, with the endosperm at the center. Called (see FIG. 1).

  What has been refined with this endosperm as the main ingredient is generally called refined wheat and is the most edible part. For this purpose, the outer skin, pericarp, seed coat, and paste layer are removed in a scouring process, and this removed portion is called barley koji. The amount of barley koji removed in the milling process varies depending on the raw barley varieties and the use of milled barley. However, when the weight of barley seeds including the hull is 100% by weight, it is generally 20% from the hull. ˜35% by weight is removed, and the weight remaining as polished wheat centered on endosperm is about 65 to 80% by weight. This milling process is generally performed by arranging a plurality of milling machines in series, and is gradually removed from the outer skin each time it passes through each milling machine. The weight remaining after this removal is called the yield through the milling machine, and is expressed as the yield (% by weight) from the ratio of “the weight of barley through the milling machine / the weight of the barley seed as the raw material”. Has been. For example, barley meal corresponding to 10% by weight from the bark of the barley seed is called barley meal with a yield ratio of 90% by weight.

  The present invention selectively utilizes barley koji produced in the milling process with a weight yield ratio of 85% to 98% by weight. That is, the outer layer of the barley straw having a general yield ratio corresponding to a layer of 2% by weight to 15% by weight from the outer skin (this outer layer of the straw may be referred to as “barley outer layer straw”). It is selectively collected and used. This barley outer layer koji is a layer suitable for practical productivity of barley-derived polyphenols because it has a particularly high polyphenol content in the barley koji centered on the paste powder layer. On the other hand, barley straw having a weight yield ratio less than this range has a very low polyphenol content and low productivity. Further, the portion where the weight yield ratio exceeds this range corresponds to the outer skin and the like, and is hard and has low processability. Therefore, it is difficult to handle simultaneously with barley koji, and pretreatment is required, resulting in a decrease in polyphenol productivity. In measuring the yield of barley, the raw barley and bare barley before the milling, from which impurities were removed, were selected one by one in order to eliminate variation, and the selection was made in the same manner as the original barley taken out 100 grains each. The yield and weight can be obtained by comparative measurement of 100 grains of each barley and bare barley after processing (after passing through each milling machine). Furthermore, in order to ensure accuracy in measurement, the processed barley is not extracted by a single person, but by a single person. It is preferable to check with. This is a fair judgment of the barley grain arrangement and is intended for accuracy.

  Moreover, in the manufacturing method of the polyphenol of this invention, when the barley is barley, it is preferable that the weight yield ratio of the barley outer layer rice cake collect | recovered at the said scouring process is 85 weight%-95 weight%. Moreover, when the barley is bare barley, it is preferable that the weight yield ratio of the barley outer layer rice cake recovered in the milling step is 90% by weight to 98% by weight. Barley is divided into what is called bare barley, which has very few (or no) layers corresponding to the outer skin, pericarp and seed coat, and common barley that is not so. To do so, it is called barley. The more preferable range of the yield ratio of barley straw used in the method for producing polyphenols of the present invention differs depending on whether it is bark or bare barley. Specifically, the range described above is preferably used.

  The polyphenol production method of the present invention utilizes barley outer layer straw produced in the barley scouring process. As described in part above, in the milling process, barley, also called barley or barley seeds, is refined using a rotating whetstone, etc., by removing the outer skin, pericarp, seed coat, and paste layer, and the endosperm layer is mainly used. It is the process of obtaining the refined wheat. This milling process is generally a plurality of (about 5 to 15) milling machines installed in series, and each milling machine is removed from the outer layer so that the yield ratio decreases by about 1 to 3% by weight. It will be. The layer removed by this is called so-called soot. In the present invention, a milling process using a milling machine capable of selectively recovering a layer corresponding to the barley outer layer mill targeted by the present invention may be employed.

  The present invention relates to a method for producing barley-derived polyphenols. Polyphenol is a general term for plant components having a plurality of phenolic hydroxy groups in the molecule, and it is known that barley contains polyphenols such as proanthocyanidins such as procyanidins and prodelphinidins. In the present invention, all the polyphenols contained in the outer barley of barley may be extracted, or the polyphenols may be produced by extraction so that the target polyphenols are selectively extracted.

  The method for extracting the polyphenol derived from barley can be used without particular limitation as long as the polyphenol can be extracted from the barley outer layer koji used in the present invention. Examples of the extraction method include an alcohol extraction method in which polyphenol is extracted into an aqueous ethanol solution by pulverizing and mixing appropriately degreased barley straw into an aqueous ethanol solution having a concentration of about 70 to 90% v / v. . In addition, various methods such as extraction with hot water instead of an ethanol aqueous solution in alcohol extraction method, a method using supercritical carbon dioxide, centrifugation, and membrane separation can be employed. In addition, the extracted polyphenol is purified by activated carbon, adsorption resin, or the like. For example, resins such as LH-20 (manufactured by GE Healthcare Bioscience) and HP-20 (manufactured by Mitsubishi Chemical) are used for gel filtration chromatography. When a sample containing polyphenol is loaded using a column packed with polyphenol, polyphenol is adsorbed to the resin, while other components (sugar, amino acid, mineral, organic acid, etc.) are washed away, thereby purifying the polyphenol. Done. Next, the purified polyphenol is concentrated after removing water by a reduced pressure method, a method using a reverse osmosis membrane, or the like. A concentrated powder that has undergone these extraction, purification, and concentration steps is subjected to a method such as freeze drying and spray drying, and a dried powder can be obtained by pulverizing the resulting dried product.

  In the method for producing polyphenols of the present invention, the barley milling process is performed with an apparatus having a plurality of milling machines, and barley outer layer molds corresponding to the weight yield ratio generated from the milling machine are selectively recovered as barley mixed mills. The polyphenol can be extracted from the barley mixed straw. According to this method, unlike the conventional barley-mixed koji that collects and collects barley koji produced in all milling processes, the barley koji generated in each kneader is taken out and mixed. Therefore, generally, the recovery pipe that collects all barley straw is collected separately from the pipe that collects only the outer barley straw used in the present invention and the other discarded pipe. This can be achieved by providing a partition plate and a switching valve as appropriate to provide two or more lines. In order to prevent unnecessary barley koji from being mixed into each milling machine, it is possible to efficiently and effectively take out a single (individual) or composite by providing a partition valve, an on-off valve, and a switching valve in a duct serving as a transfer pipe. Can be mixed and removed.

  In the polyphenol production method of the present invention, the barley koji process is performed with an apparatus having a plurality of kneaders, and the barley koji is taken out for each kneader and corresponds to the weight yield ratio in the taken out barley koji. It can be characterized by extracting polyphenols from barley outer layer straw. According to this method, since barley koji is taken out into a tank or the like for each kneader, the barley koji in the barley koji recovery tank corresponding to the yield having a high polyphenol content is used. Selection of barley straw is easy, and it is easy to produce polyphenols with stable quality.

  In the polyphenol production method of the present invention, the barley koji process is performed with an apparatus having a plurality of kneaders, and the barley koji is taken out for each kneader and corresponds to the weight yield ratio in the taken out barley koji. A polyphenol can be extracted from a barley mixed koji mixed with a plurality of barley outer koji. According to this method, since the barley koji is taken out from the tank or the like for each kneading machine and used, it is easy to mix the one corresponding to a suitable kneading machine used in the present invention as a yield. . In particular, it is suitable when the barley outer layer straw is properly recovered and used at a stage where the varieties are changed and the yield for each milling machine is not clear.

  The method for producing polyphenols of the present invention comprises performing a barley milling process on a plurality of barley varieties with an apparatus having a plurality of barley mills, and producing barley outer layer straw corresponding to the weight yield ratio among a plurality of barley mills. Polyphenols can be extracted from each barley kneader and extracted from the barley-mixed koji in which the barley koji of the plurality of varieties are mixed with the barley outer-layer koji corresponding to the weight yield ratio. The method for producing polyphenols of the present invention may use barley straw obtained from multiple varieties of barley. Thus, if a plurality of varieties are used in combination, polyphenols can be recovered from the varieties with high productivity even if they are varieties of barley that produce only a small amount.

  In this way, a portion containing a large amount of polyphenols is selectively recovered using mixed straw including single varieties and blends with other varieties, and barley straw taken out as a simple substance (individually), and blended effectively. Since polyphenol is extracted, it is easy to extract polyphenol, and the amount of polyphenol can be secured.

  The present invention can also be achieved as a polyphenol derived from barley produced by the method for producing a polyphenol of the present invention as described above. In general, polyphenols are said to be bitter and astringent, but the barley-derived polyphenols produced according to the present invention are less sensitive to bitterness and astringency, and when eaten, they are fragrant, sweet and fragrant. Moreover, this invention can be made into the processed food containing the polyphenol derived from this barley.

[Reference form]
FIG. 2 is a diagram showing an outline of a barley polishing apparatus in order to show a conventional barley polishing process and a barley recovery process. Here, an example is given of an apparatus that obtains polished wheat by using ten milling machines from the first milling machine (the milling machine 1) to the tenth milling machine 10 (the milling machine 10) in series. The barley seeds (barley) used as a raw material are appropriately refined from the milling machine 1 or the milling machine 2 depending on the variety and state, and the polished barley is recovered through stepwise milling by each milling machine. The outer shells, peels, seed coats and glue layers removed during the milling process are mixed with barley from the outlet of each milling machine as barley mill through the transfer line (1) to the dust collection tank (1). It is collected as a bag. In this mixed barley straw, generally, the equivalent to a weight yield ratio of 60 to 100% by weight (changed depending on the type of barley seeds, etc.) is collected and the polyphenol content is low. .

[First embodiment]
FIG. 3 is a diagram showing an outline according to the first embodiment of the barley koji apparatus that can be used in the method for producing a polyphenol of the present invention. In this first embodiment, a switching valve is provided at the outlet for discharging the soot of each finer, and the transfer line (1) for transfer to the dust collection tank (1) and the transfer to the dust collection tank (2) are provided. It is set as the structure which can divide what to send to the transfer line (2) to do. Using the apparatus of this configuration, the barley outer layer rice cake to be selectively collected based on information about which rice milling machine corresponds to what weight yield ratio is transferred to the barley that is to be refined with a rice milling machine. The switching valve is set so as to collect in (2), and the portion that is not the polyphenol collection target is collected in the transfer line (1). For example, when most of the portion to be refined by the precision machine 1 corresponds to the outer skin and the weight yield ratio exceeds 98%, the switching valve is set so that the waste discharged from the precision machine 1 is sent to the transfer line (1). When it is set and it is confirmed that the milling machines 2 to 6 correspond to the barley outer layer basket used for the production of the polyphenol of the present invention, the baskets discharged from the milling machines 2 to 6 are transferred to the transfer line (2). If the selector valve is set to send, and it is confirmed that the milling machine after the milling machine 7 does not correspond to the layer of the barley outer layer basket used in the present invention, the milling machine 7 or later By setting the switching valve attached to the pipe to be sent to the transfer line (1), selective recovery can be performed. By this transfer line (2), the polyphenol of the present invention can be produced by extracting the polyphenol from the mixed soot collected in the dust collection tank (2).

[Second Embodiment]
FIG. 4 is a diagram showing an outline according to the second embodiment of the barley koji apparatus that can be used in the method for producing a polyphenol of the present invention. In this second embodiment, a switching valve is provided at the discharge port for discharging the soot of each finer, and the transfer line (1) for transferring to the dust collecting tank (1) and the finer are discharged from each finer. It is the structure which provided the small tank so that the soot could be collected by each. In this configuration, based on the information on which milling machine corresponds to what weight yield ratio, the barley outer layer basket to be selectively collected is collected from the corresponding single milling machine, and polyphenol is extracted. can do. Or what was collect | recovered by each small tank from the target precision machine can be mixed, and polyphenol can be extracted.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to a following example, unless the summary is changed.

[Evaluation item]
[Yield (% by weight)]
The weight of each sample for obtaining the yield was obtained as an average value of 100 samples taken out. In order to ensure the accuracy of the weight measurement to determine the yield, a single person extracts the processed barley, and multiple persons check whether the extracted processed barley grain size is evenly selected. Inspected.
Yield (% by weight) = [average weight (g) of 100 samples taken out / average weight (g) of 100 samples (raw wheat) before starting milling]] * 100 (1)
-Acquisition of raw wheat: Barley raw barley and bare barley raw wheat from which impurities were removed were selected one by one in order to eliminate variation, and 100 grains were taken out.
・ Acquisition of barley for each milling machine: For each sample type, barley in the milling process was taken out of each milling machine, and the yield was investigated. That is, the yield for each precision machine is equivalent to the average value in the precision machine.

[Polyphenol content]
A sample is appropriately pulverized and immersed in an 80% v / v concentration aqueous alcohol solution. After the polyphenol is extracted into the aqueous alcohol solution, the alcohol aqueous solution from which the polyphenol has been extracted is subjected to a colorimetric test by the Folin-Denis method. The polyphenol content in the sample was calculated from the weight ratio of the sample immersed in the aqueous solution and the change in absorbance by the Folin-Denis method.

[Spinning device]
(Yes) A horizontal barley milling machine in Ito Seikisho was used. This barley milling machine is a barley milling machine that is used in series from No. 1 to No. 10, and is basically set so that when the No. 10 finishes, the milling can be performed with a yield of about 70 to 80% by weight, depending on the variety. It is. In addition, when operating the device, it is not always necessary to operate Units 1 to 10, but to properly use the milling machine to be used, such as starting from Unit 2 onwards according to the barley (raw wheat) varieties, etc. changed.

[Test Examples 1 and 2]
The yield and polyphenol content for each milling machine were measured using Hind Marsh from Australia, Sachiho Golden from Saga Prefecture (all varieties of barley). In all cases, No. 2 to No. 10 were used as the precision machines. The measurement result of Hind Marsh is shown in FIG. 5, and the measurement result of Sachiho Golden is shown in FIG.
As is apparent from these figures, both Hindmarsh and Sachiho Golden have a low polyphenol content at a yield of 80 to 85% by weight, and a particularly significant increase in polyphenol content at a yield of 85 to 95% by weight. It was confirmed that That is, it was confirmed that the variation in polyphenol content was surprisingly large in the portion of the barley koji, which corresponds to the paste layer and was simply collected as barley mixed koji, with a yield of 75 to 95% by weight. In these varieties that are barley, the range exceeding 98% by weight yields barley hulls, which is harder than barley straw recovered from a portion of 98% by weight or less of yield, and is extracted with polyphenol. Inferior in workability. Further, in the case of barley, the portion exceeding 95% by weight was also a hard cocoon with slightly low processability.

[Test Example 3]
Similarly to Test Examples 1 and 2, the yield and polyphenol content for each milling machine were measured using Ichibanboshi from Saga Prefecture, which is bare wheat. The measurement results are shown in FIG.
As is apparent from this figure, it was confirmed that the content of polyphenols in bare barley was remarkably high particularly in the vicinity of 90 to 98% by weight. Even in these varieties that are bare barley, the range exceeding 98% by weight yield is the barley hull, which is harder than barley straw recovered from the portion of 98% by weight or less yield, and is used for polyphenol extraction. Inferior in workability.

[Example 1]
Based on the knowledge of the test example, two products of Nishinohoshi ((a) is from Saga Prefecture, (b) is from Nagasaki Prefecture), Toyono Kaze, using barley outer layer straw obtained at each yield of Haruka Nijo, Table 1 shows the results of measuring the content of polyphenol extracted. Toyonokaze is bare wheat. Moreover, as a result of producing polyphenols by the alcohol extraction method using each product and barley outer layer koji mixed with these products, it was possible to produce an industrially mass-produced polyphenol.

  According to the present invention, polyphenols can be efficiently produced from barley meal that has been used almost exclusively as livestock feed and shochu liquor treatment products as industrial waste.

Claims (5)

A method for producing a polyphenol derived from barley, wherein the raw barley is barley,
Performed barley pearling process by apparatus having a plurality of pearling machines, devices having the plurality of pearling machines, among barley bran resulting from the plurality of pearling machines, selecting a large Mugigaiso bran predetermined weight yield ratio And a transfer line (1) for recovering barley straw other than the barley outer layer straw of the weight yield ratio,
Each of the plurality of polishing machines has a pipe connected to the transfer line (1) and the transfer line (2), and the delivery destination of the barley meal discharged from each of the plurality of polishing machines Is provided with a switching valve for selecting either the transfer line (1) or the transfer line (2), and by setting each of the switching valves, a weight yield ratio of 85% by weight to the method of manufacturing polyphenol, characterized in that 95 wt% of barley outer bran, extracting the polyphenols from barley outer bran recovered by sending the transfer line (2). A method for producing a polyphenol derived from barley, wherein the raw barley is bare barley,
  The barley milling process is performed by an apparatus having a plurality of milling machines, and the apparatus having the plurality of milling machines selectively selects barley outer layer molds having a predetermined weight yield ratio from the barley milled rice produced from the plurality of milling machines. And a transfer line (1) for recovering barley straw other than barley outer straw of the weight yield ratio,
  Each of the plurality of polishing machines has a pipe connected to the transfer line (1) and the transfer line (2), and the delivery destination of the barley meal discharged from each of the plurality of polishing machines Is provided with a switching valve for selecting either the transfer line (1) or the transfer line (2), and by setting each of the switching valves, a weight yield ratio of 90% by weight to A method for producing polyphenol, wherein polyphenol is extracted from barley outer layer straw recovered by sending 98% by weight of barley outer layer straw to the transfer line (2). An apparatus for recovering barley outer layer straw as a raw material for producing polyphenols derived from barley,
A plurality of tanning machines arranged in series to perform barley scouring;
Of the barley koji produced from the plurality of milling machines, a transfer line (2) for selectively recovering the barley outer layer koji having a predetermined weight yield ratio, and the barley having the predetermined weight yield ratio via the transfer line A dust collection tank (2) to which outer layer soot is transferred;
A transfer line (1) for recovering barley straw other than the barley outer strata having the predetermined weight yield ratio, and barley straw other than the barley outer strata having the predetermined weight yield ratio is provided via the transfer line (1). A dust collection tank (1) to be transported,
  Each of the plurality of polishing machines has a pipe connected to the transfer line (1) and the transfer line (2), and the delivery destination of the barley meal discharged from each of the plurality of polishing machines A switching device for selecting either the transfer line (1) or the transfer line (2) is provided. A method for recovering barley outer layer straw from the barley as a raw material using the apparatus according to claim 3. The method for recovering barley outer layer straws according to claim 4, wherein the barley as a raw material is barley or bare barley.