JP5850363B2 - Method for producing amino acid-containing liquid - Google Patents

Description

  The present invention relates to an amino acid-containing liquid obtained by treating a food processing waste liquid containing plant cells or fibers, and a method for producing the amino acid-containing liquid. Moreover, it is related with the fertilizer and pest repellent containing the said amino acid containing liquid.

  Disposal of a large amount of waste has become a problem, and efforts to deal with the problem of waste are progressing, such as the construction of a manufacturing plant that aims for zero emissions in the industrial world. Such efforts are also being carried out in the food processing industry, and although recycling of food processing waste liquid is being promoted, the amount of waste liquid is so large that the processing is not in time. In particular, food processing waste liquids made from plants often contain refractory fibers based on cellulose and plant cells with hard cell walls as suspended matter (SS), which hinders treatment. Often. Shochu and awamori distillers and brewers such as sake, vinegar and soy sauce are just some examples.

  In particular, the disposal of distillers is a serious problem because dumping in the ocean is prohibited from the viewpoint of preventing environmental pollution. Distillers are viscous solid-liquid mixtures having a water content of 90% or more and are difficult to handle, so it is customary to separate the solid and liquid components by solid-liquid separation. However, although there is a method for reusing as a feed or fertilizer for a relatively small amount of solid, there are few effective methods for treating a relatively large amount of liquid. One of the factors is that the liquid component is easily rotted and contains a large amount of suspended solids and is difficult to handle.

  There is a demand for a new recycling method capable of treating a large amount of food processing waste liquid typified by distillers. For example, a method for producing vinegar using awamori distillers is disclosed (see, for example, Patent Document 1). ).

JP 2003-33170 A

  However, the method for producing vinegar using the Awamori distiller described in Patent Document 1 requires 2-3 weeks only for acetic acid fermentation, and more than half a year in all processes including storage ripening. Can not do it.

  Moreover, the manufacturing method of the said vinegar does not include the process of increasing the permeability of the cell wall of a plant cell. Therefore, acetic acid fermentation occurs only outside the plant cells, and the components inside the plant cells cannot be used effectively. Further, the fibrous material is not decomposed and is only removed by a plurality of times of filtration, which becomes a new waste.

  In view of these problems, it is an object of the present invention to quickly process and recycle food processing waste liquid by using plant cells or fibers effectively. Another object of the present invention is to provide a versatile amino acid-containing liquid obtained thereby.

  In order to solve the above problems, the inventor of the present invention has made extensive studies and found a method of alternately performing acetic acid fermentation and lactic acid fermentation. Acetic acid bacteria have the property of degrading proteins and producing amino acids during acetic acid fermentation, but they have poor ability to increase the permeability of plant cells or degrade fiber. Surprisingly, however, it has been found that by alternately repeating acetic acid fermentation and lactic acid fermentation, suspended solids are reduced and the amino acid concentration in the liquid is increased. This is understood to be because lactate fermentation increases the permeability of the cell wall and degrades the fiber, which aids acetic acid fermentation.

That is, the first invention is
(A) A step of introducing a food processing waste liquid containing plant cells or fiber into a processing tank (C) Acetic acid bacteria and lactic acid bacteria are charged into the processing tank, and acetic acid fermentation and lactic acid fermentation are alternately performed by intermittent aeration, and fermentation (D) A method for producing an amino acid-containing liquid comprising the steps (A), (C), and (D) performed in the order of steps for obtaining an amino acid-containing liquid by solid-liquid separation of the fermented product.

The second invention is
(B) Step of injecting gas-liquid two-phase flow into food processing waste liquid The method for producing an amino acid-containing liquid according to the first invention, wherein the step (B) is performed before the step (C).

3rd invention is a manufacturing method of the amino acid containing liquid of 1st or 2nd invention with which liquid temperature is maintained at 30 degreeC or more and 37 degrees C or less, and a process (C) is performed.

The fourth invention is the production of the amino acid-containing liquid according to any one of the first to third inventions, wherein the food processing waste liquid is a shochu or awamori distiller or a liquid obtained by solid-liquid separation of the distiller. Is the method.

5th invention contains the amino acid content in any one of 1st thru | or 3rd invention whose food processing waste liquid is suspension which added water to the viscous material isolate | separated from the amino acid containing liquid at the process (D). It is a manufacturing method of a liquid.

In addition, the thing containing the amino acid containing liquid obtained by the method in any one of 1st thru | or 5th invention can be used as a pest repellent.

According to the method for producing an amino acid-containing liquid of the present invention, by alternately repeating acetic acid fermentation and lactic acid fermentation, it is possible to treat food processing waste liquid containing plant cells or fibers, which has been difficult in the past. Thereby, suspended solids are reduced, and an amino acid-containing liquid rich in amino acids is obtained. In order to repeat acetic acid fermentation and lactic acid fermentation alternately, it is only necessary to perform a simple operation of intermittent aeration in the same tank. Since processing is completed in a short period of time, there is little risk of corruption.
The amino acid-containing liquid obtained thereby contains a high concentration of amino acids and has various uses. For example, it can be used as a raw material for a fertilizer, a pest repellent, a health drink, or a raw material thereof, or a concrete secondary product having water purification ability.

Before the addition of acetic acid bacteria and lactic acid bacteria, when a gas-liquid two-phase flow is injected into the food processing waste liquid, the cell walls and cell membranes of the plant cells are made permeable by being crushed or forcedly oxidized by the gas-liquid two-phase flow. Increase. In the step (C), since fermentation proceeds inside and outside the cell, components inside the plant cell can be used effectively, and the treatment is completed more quickly. Since the fiber is also crushed and easily decomposed by the gas-liquid two-phase flow, the suspended matter is decomposed and reduced more efficiently.
The amino acid-containing liquid obtained thereby contains a higher concentration of amino acid by fermenting even the components inside the plant cell.

When the liquid temperature is maintained at 30 ° C. or higher and 37 ° C. or lower and the step (C) is performed, the liquid temperature is maintained at a liquid temperature suitable for fermentation, so that fermentation is performed more efficiently and for a shorter period of time. Can be processed.
The amino acid-containing liquid obtained thereby contains a higher concentration of amino acids for efficient fermentation.

  The method for producing an amino acid-containing liquid of the present invention is a new method for recycling distillers. This makes it possible to quickly and efficiently treat a shochu or awamori distiller or a liquid obtained by solid-liquid separation of the distiller, which has heretofore been difficult.

  When a suspension obtained by adding water to the viscous product by-produced in step (D) is used as a food processing waste liquid, the amount of the viscous product can be further reduced, and the amount of waste is reduced. Can be obtained.

  When the fertilizer of the present invention is used, the yield of crops can be improved, and crops rich in nutrients such as sugar and vitamins can be obtained.

  Moreover, when the pest repellent of the present invention is used, insect damage is suppressed, the crop yield is improved, and a high-quality and good-looking crop can be obtained. Active ingredients as repellents are acetic acid and lactic acid, which are easily decomposed by the metabolism of soil microorganisms and plants and do not contaminate the soil and crops.

It is a piping diagram which shows the processing apparatus which concerns on this invention. It is a perspective view which shows the injection nozzle which concerns on this invention. It is side view sectional drawing which shows the injection nozzle which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.

  First, the manufacturing method of the amino acid containing liquid of this invention is demonstrated.

  The food processing waste liquid according to the present invention is a waste liquid discharged in the process of manufacturing processed foods using plants as raw materials and in the process of treating waste discharged along with it, and contains plant cells or fibers. The plant cell or fiber is derived from a plant as a raw material of food and is usually contained as a suspended substance. It is preferable that the solid content which is long enough to be unprocessable at the beginning of the long fiber is removed in advance by solid-liquid separation. Examples of the food processing waste liquid include rice shochu, shochu shochu, barley shochu and other shochu or awamori distillers, sake brewers such as vinegar, soy sauce, and liquids obtained by solid-liquid separation thereof. It is done. The solid-liquid separation means for obtaining the liquid component is not particularly limited, and any one exemplified by a rotary sieve, a filter, a centrifuge, a press, an extruder, etc. can be used. The solid component separated from the liquid component is composted or discarded, for example.

(Food processing waste liquid input process)
The food processing waste liquid is charged into the primary treatment tank 4. When the food processing waste liquid is highly viscous or contains a large amount of suspended solids, a liquid to be treated may be diluted with water in order to facilitate the subsequent operation. The primary treatment tank 4 has an openable / closable lid (not shown). When the food processing waste liquid, bacteria, or the like is introduced or aerated, the lid is opened, and during lactic acid fermentation, the lid is closed to an anaerobic state. be able to.

(Gas-liquid two-phase flow injection process)
A high-speed gas-liquid two-phase flow is injected into the primary treatment tank 4. Although this step is not essential, it is preferable to perform gas-liquid two-phase flow injection in order to efficiently perform the subsequent processing.

  The gas-liquid two-phase flow is a high-speed liquid flow in which fine bubbles including air are mixed. For example, a high-speed liquid flow is generated in the injection nozzle 9, and separately supplied air is supplied into the injection nozzle 9. Obtained by mixing in a liquid stream. If such an object can be achieved, the shape, structure and the like of the injection nozzle 9 are not particularly limited. The illustrated injection nozzle 9 is externally fitted and welded to the tip of a liquid feeding pipe 15 that feeds the pump 10 from the lower part to the upper part of the primary treatment tank 4, and sucks air fed from the aeration blower 8. In this configuration, a gas-liquid two-phase flow is generated. The injection nozzle 9 has a substantially columnar appearance coaxial with the liquid feeding pipe 15, and a rear portion formed in a slightly large cylindrical shape can be externally fitted to the liquid feeding pipe 15.

The injection nozzle 9 is provided with a plurality of liquid supply holes 12, which communicate with both upstream and downstream ends, and the liquid flow introduced into the injection nozzle 9 from the liquid supply pipe 15 is interrupted. The flow velocity is increased by passing through the liquid feeding holes 12,. The liquid feeding holes 12,... Are formed substantially evenly with respect to the cross section of the injection nozzle 9 so as not to apply a local load. The shape, cross-sectional area, number, arrangement, and the like of the liquid feed holes 12 are not particularly limited. For example, as shown in FIGS. 2 and 3, the liquid-feed holes 12 have a circular cross section on a straight line orthogonal to the axis of the injection nozzle 9. Three large-diameter liquid supply holes 12,... Can be provided, and two small-diameter liquid supply holes 12, 12 each having a circular cross section can be formed in each of the two regions divided by the straight line. Whereas the diameter of the injection nozzle 9 is 50 mm, the diameter of the large-diameter liquid supply hole 12 is about 7.1 mm, and the diameter of the small-diameter liquid supply hole 12 is 5 mm. Since it occupies about 11% of the cross-sectional area of the nozzle 9, the flow velocity of the liquid flow is about 9.1 times that in the liquid supply pipe 15 in the liquid supply holes 12,. The flow rate in the liquid feeding pipe 15 is not particularly limited as long as a gas-liquid two-phase flow can be injected, but is usually about 300 L / min. In that case, the liquid flow in the liquid feed holes 12,... Becomes as high as about 2.7 × 10 ³ L / min.

  Inside the injection nozzle 9 is provided a mixing chamber 13 that communicates with an intermediate portion of all the liquid feed holes 12,..., And the mixing chamber 13 communicates with an intake port 14 formed in the outer peripheral surface of the injection nozzle 9. ing. An air supply pipe 16 is fitted and welded to the intake port 14, and the air supplied from the aeration blower 8 is guided to the mixing chamber 13 through the intake port 14. A high-speed liquid flow flows from the upstream portion to the downstream portion of the liquid feeding hole 12, but air is mixed in the mixing chamber 13 to generate a gas-liquid two-phase flow containing a large amount of bubbles.

  Since the lower end of the liquid feed pipe 15 communicates with the vicinity of the bottom of the primary treatment tank 4 and the downstream end of the spray nozzle 9 is disposed below the liquid surface, the liquid to be treated in the primary treatment tank 4 It circulates through the injection nozzle 9. In addition to increasing the dissolved oxygen concentration in the liquid to be treated, the gas-liquid two-phase flow crushes the cell walls and cell membranes of plant cells contained in the suspended matter in the gas-liquid two-phase flow or in the primary treatment tank 4 or Has the function of forced oxidation by bubbles. As a result, the permeability of the cell wall and the cell membrane is increased and the fermentation in the next step proceeds inside and outside the cell, so that the time required for fermentation can be shortened and unintentional decay can be prevented. The jetting time of the gas-liquid two-phase flow is not particularly limited, but in order to obtain a sufficient effect, it is generally considered that the liquid to be treated in the primary treatment tank 4 circulates about 5 times.

(Fermentation process)
Thereafter, the primary treatment tank 4 is fermented with acetic acid bacteria and lactic acid bacteria. Acetic acid bacteria and lactic acid bacteria are usually added as a suspension obtained by culturing these bacteria in a liquid medium. As described above, the gas-liquid two-phase flow has a function of crushing or forcibly oxidizing the cell wall and cell membrane, so that it is injected after the injection of the gas-liquid two-phase flow is completed so as not to adversely affect these bacteria. It is preferable.

  Additives that aid in the growth or fermentation of acetic acid bacteria or lactic acid bacteria can also be added. Examples of such additives include fulvic acid, ethanol, molasses, glucose, and sucrose. Since fulvic acid has a function of activating microorganisms, growth of acetic acid bacteria and lactic acid bacteria, and acetic acid fermentation and lactic acid fermentation are promoted. Humic acid can also be used in place of fulvic acid. In addition to acting as an initiator for acetic acid fermentation, ethanol has a function of killing non-resistant bacteria and assisting the selective growth of acetic acid bacteria and lactic acid bacteria. As ethanol, shochu, awamori, sake and other commercially available alcoholic beverages can also be used. When molasses, glucose, or sucrose is added, they act as initiators for lactic acid fermentation. Moreover, when yeast is mixed, it becomes a raw material for ethanol fermentation, and ethanol produced thereby becomes a raw material for acetic acid fermentation.

  Then, acetic acid fermentation (aerobic fermentation) and lactic acid fermentation (anaerobic fermentation) are alternately performed by intermittent aeration to obtain a fermented product. The aeration means is not particularly limited. For example, as shown in FIG. 1, the aeration blower 8 and the bottom of the primary treatment tank 4 can be connected by an air supply pipe 16. The time and number of times of aeration are not particularly limited, but the total daily aeration time may normally be about 1 hour. Normally, the first aeration is performed immediately after the bacteria and additives are added, but this can be omitted when the gas-liquid two-phase flow is injected. The start or stop of aeration may be determined based on the amount of dissolved oxygen. In this case, for example, the amount of dissolved oxygen in the liquid in the primary treatment tank 4 is maintained so as not to be less than 9 ppm. The liquid temperature during fermentation is preferably maintained at 25 ° C. or higher and 37 ° C. or lower, more preferably 30 ° C. or higher and 37 ° C. or lower, and further preferably 35 ° C. or higher and 37 ° C. or lower. This is for efficiently performing fermentation by maintaining a liquid temperature suitable for acetic acid fermentation and lactic acid fermentation.

  By alternately performing acetic acid fermentation and lactic acid fermentation in this manner, the cell walls of sugar, ethanol, fiber, and plant cells contained in the liquid to be treated are converted to lactic acid or acetic acid, and the protein is hydrolyzed to amino acids. Produce. Moreover, the fermentation proceeds rapidly and the treatment is completed in about 3 to 14 days. It is understood that the increase in amino acid concentration is mainly due to the action of acetic acid bacteria. As a secondary matter, it is understood that the pH decreases due to production of acetic acid and lactic acid, and hydrolysis proceeds. However, since acetic acid fermentation alone does not show the same level of increase in amino acid concentration, the permeability of plant cell walls increases during lactic acid fermentation and the degradation of fibers, proteins, etc. progresses. Is understood to be promoted. In this step, the suspended matter is reduced to a visible level, which supports the progress of the decomposition of the fiber that is the main component of the suspended matter. Lowering the pH in this step has an effect of preventing unintended bacteria growth and preventing spoilage.

  After knowing the completion of fermentation by reducing the bubbles of carbon dioxide released by bacteria, etc., the fermented product is subjected to solid-liquid separation to obtain an amino acid-containing solution (primary treatment solution) and a viscous product. The primary treatment liquid is a substantially clear liquid containing almost no suspended substances. On the other hand, the viscous material contains acetic acid bacteria and lactic acid bacteria and their dead bodies in addition to the fine fibers contained in the suspended solids and their decomposition products, and exhibits a water content of about 65 to 70%. The viscous material can be composted or discarded in the same manner as the solid content obtained by the initial solid-liquid separation, but is mixed with another food processing waste liquid used for the treatment of the present invention, or It can also be put into a secondary treatment tank 5 having a structure substantially similar to that of the primary treatment tank 4, suspended in water, and used again for the production of the amino acid-containing liquid of the present invention. The fermented material obtained by fermentation in the secondary treatment tank 5 is solid-liquid separated into an amino acid-containing liquid (secondary treatment liquid) and a viscous material, and the viscous material is composted and discarded, or the present invention. Mixed with another food processing effluent to be processed.

(Aging process)
The primary treatment liquid and the secondary treatment liquid are transferred to an aging tank and stored as desired. The primary treatment liquid and the secondary treatment liquid can be stored in the same aging tank, but can also be stored separately in the primary aging tank 6 and the secondary aging tank 6 ', respectively. In the aging tank, the amino acid-containing liquid can be simply stored, but intermittent aeration can be performed as in the fermentation process. When intermittent aeration is performed, an environment in which the remaining acetic acid bacteria can easily survive is maintained, generation of scum by dead bodies of acetic acid bacteria can be suppressed, and an increase in pH and accompanying decay are also suppressed. Even if the amino acid-containing liquid contains a small amount of suspended solids, the suspended solids are reduced by fermentation.

  Next, the amino acid-containing liquid of the present invention will be described.

  The amino acid-containing liquid contains acetic acid, lactic acid, and a high concentration of amino acid, and the amino acid concentration of the primary treatment liquid is higher than that of the secondary treatment liquid. The amino acid-containing liquid is used, for example, as a fertilizer or health drink, or as a raw material thereof, or mixed with concrete to produce a concrete secondary product having water purification ability. Since it is an acidic liquid containing acetic acid and lactic acid, it can also be used as a pest repellent or a raw material thereof. The fertilizer or the pest repellent is usually produced by diluting an amino acid-containing liquid with water such as clean water or well water. When the primary treatment liquid is diluted with water to produce a fertilizer, the dilution ratio is preferably 100 to 250 times for the original fertilizer, preferably 250 to 1000 times, more preferably 500 to 1000 times for the additional fertilization. is there. When the secondary treatment solution is diluted with water to produce a pest repellent, the dilution factor is usually about 100 times.

  When fertilizers containing amino acid-containing liquids are used, the yield of crops is improved, and crops rich in nutrients such as sugar and vitamins can be obtained. It is understood that this is mainly due to the action of amino acids contained in the amino acid-containing liquid at a high concentration. In general, due to adsorption by silicic acid and aluminum compounds contained in a large amount of soil, absorption of nutrients into agricultural products is likely to be hindered, particularly in the case of cationic nutrients. However, when the fertilizer of the present invention is used, absorption of nutrients such as ammonium ion, nitrate ion, phosphate ion, and potassium ion is promoted because various amino acid molecules having different isoelectric points function as counter ions. The In addition, amino acids themselves are absorbed by agricultural crops and become a raw material for proteins, which promotes good growth.

  Hereinafter, although an Example is described, this invention is not limited to this.

(Food processing waste liquid input process)
About 1 m ³ of rice shochu distilled spirit received in the raw material tank 1 is solid-liquid separated with a 20-mesh rotary sieve 7 to obtain a solid content mainly composed of long fibers and a liquid content containing a large amount of suspended solids. About 700 L was obtained and temporarily stored in the solid content storage tank 2 and the liquid content storage tank 3, respectively. The liquid was put into the primary treatment tank 4 and 300 L of water was added and mixed to obtain a liquid to be treated. On the other hand, the solid content was used for composting.

(Gas-liquid two-phase flow injection process)
The liquid to be treated was circulated through the liquid feeding pipe 15, and a gas-liquid two-phase flow was jetted from the jet nozzle 9 toward the liquid to be treated in the primary treatment tank 4. The flow rate in the liquid feeding pipe 15 was set to 300 L / min, and a gas-liquid two-phase flow was injected for about 17 minutes. Thereby, the to-be-processed liquid in the primary processing tank 4 was circulated about 5 times.

(Primary fermentation process)
Into the liquid to be treated, 5 L of fulvic acid (manufactured by Interman Co., Ltd.), 1 L of shochu (alcohol content: 35 degrees), and 5 L of molasses are added, and the aeration blower 8 is operated for about 5 minutes to cover these additives Mixed with treatment solution. Subsequently, 1 L of acetic acid bacteria liquid and 1 L of lactic acid bacteria liquid were added. Here, a suspension obtained by culturing commercially available acetic acid bacteria in a liquid medium was used for the acetic acid bacteria solution, and a suspension obtained by culturing commercially available lactic acid bacteria in a liquid medium was used for the lactic acid bacteria solution. The initial liquid temperature was 25 ° C., and no particular temperature control was performed thereafter in this example.

  Thereafter, the liquid to be treated was fermented while performing intermittent aeration. Intermittent aeration was performed once or twice a day so that the total aeration time per day was about 1 hour. This operation was repeated every day from the first day, and on the 12th day, almost no bubbles were observed, and it was judged that the fermentation was completed. The fermented product was subjected to solid-liquid separation using the rotary sieve 7 of the same standard as above to obtain about 800 L of a primary treatment solution and about 200 L of a viscous product. Fermentation is completed in 12 to 14 days if the temperature is not controlled, but it is 6 to 7 days if the liquid temperature is maintained at 30 ° C. to 37 ° C., and usually 3 days if the liquid temperature is maintained at 35 to 37 ° C. Complete with.

(Secondary fermentation process)
The viscous material obtained above was again subjected to fermentation. First, the entire amount (about 200 L) of the viscous material was charged into the secondary treatment tank 5, and then 800 L of water was charged and mixed to obtain a liquid to be treated. Furthermore, 2 L of fulvic acid, 1 L of shochu (alcohol content: 35 degrees), 4 L of molasses, and 2 kg of glucose were added, and the aeration blower 8 was operated for about 5 minutes to mix these additives with the liquid to be treated. Next, 0.5 L of acetic acid bacteria solution and 0.5 L of lactic acid bacteria solution were added. The amount of acetic acid bacteria liquid, lactic acid bacteria liquid, and each additive added is smaller than that of the primary fermentation process because the amount of fibers, proteins, etc. remaining in the viscous material is small, and the viscous material is acetic acid bacteria and lactic acid bacteria. This is because the fermentation proceeds sufficiently even if the input amount is reduced.

  Thereafter, the liquid to be treated was fermented while performing intermittent aeration. Intermittent aeration was performed once or twice a day so that the total aeration time per day was about 1 hour. This operation was repeated every day from the first day, and on the 10th day, the generation of bubbles was hardly recognized and it was judged that the fermentation was completed. The fermented product was subjected to solid-liquid separation using the rotary sieve 7 of the same standard as above to obtain about 900 L of the secondary treatment liquid and about 100 L of viscous material. Fermentation is completed in 10 to 12 days if the temperature is not controlled, but is completed in about 5 days if the liquid temperature is maintained at 30 to 37 ° C. The secondary viscous material was mixed in another distiller which is scheduled to be processed by the processing method of the present invention.

(Aging process)
The primary treatment liquid was stored in the primary aging tank 6 and the secondary treatment liquid was stored in the secondary aging tank 6 ′. In each case, aeration was performed once or twice a day so that the total aeration time per day was about 1 hour during the storage period.

  The amino acid analysis of the amino acid-containing liquid obtained in this example was performed and compared with the liquid content obtained by solid-liquid separation of the raw material distiller. As the amino acid-containing liquid, a primary treatment liquid and a secondary treatment liquid which were separated from a viscous material and were not stored at any age were used. Each sample was deproteinized and then diluted with dilute hydrochloric acid (dilution ratio with respect to the sample stock solution was 20 times), and analyzed with a fully automatic amino acid analyzer JLC-500 (manufactured by JEOL Ltd.). Table 1 shows the actually measured amino acid content after dilution. In addition, although analysis of about 40 or more chemical species was possible, chemical species that were not detected in any sample are not shown in the table. A blank indicates that it was below the limit of quantification.

  As shown in Table 1, the amino acid content in the primary treatment liquid is higher than that of the liquid except for a part, and is approximately twice or more. The secondary treatment liquid contains amino acids substantially equivalent to the liquid content, but it can be seen that the amino acids are significantly increased in view of dilution in the course of the treatment according to the present invention.

  The primary treatment liquid obtained in Example 1 was diluted 100 times and used as the original fertilizer, and sweet potatoes were cultivated in the field using a multi-sheet. The yield per 10a was 3088 kg, an increase of about 26% compared to the yield of 2451 kg when compost was used as the original manure.

  Using the amino acid-containing liquid obtained in Example 1, snap peas were cultivated in the field. In this embodiment, the primary treatment liquid and compost diluted 500 times with clean water are used as the primary fertilizer, the primary treatment liquid diluted 500 times with clean water is sprayed as additional fertilizer, and the secondary treatment liquid diluted 100 times with clean water. Was used as a pest repellent. In Comparative Example 1, only compost was used as the base manure, and chemical fertilizer and a chemical agent for pest repellent were used as additional fertilizer. Table 2 shows the yields of this example and Comparative Example 1 from November to April of the following year.

  As shown in Table 2, while Comparative Example 1 showed a general yield, in this example, a total yield increase of about 11% was observed, and in particular, an increase in yield in February to April. Is remarkable. This is because, in general, the yield decreases as the outside air temperature rises, but in this example in which the diluted amino acid-containing liquid was fertilized, the harvestable period was extended without being tired. In addition, the amount of harvest in December and January in Example 3 is greatly reduced due to the occurrence of pests.

  Using the amino acid-containing liquid obtained in Example 1, tomatoes were grown in a greenhouse. In this example, compost was used as the basic manure, a primary treatment solution diluted 250 times with clean water was sprayed as additional fertilizer, and a secondary treatment solution diluted 100 times with clean water was used as a pest repellent. In Comparative Example 2, compost was used as the original fertilizer, chemical fertilizer was used as additional fertilizer, and chemical agents were used for pest repellent. Table 3 shows the results of food analysis of the tomatoes harvested in this example and Comparative Example 2. As shown in Table 3, sugar content, vitamin A (β-carotene) content, and vitamin C content all increased significantly.

  Using the amino acid-containing liquid obtained in Example 1, summer strawberries were cultivated in a greenhouse. The primary treatment solution diluted 250 times with clean water was sprayed on the foliage as liquid fertilizer, and the secondary treatment solution diluted 100 times with clean water was used as a pest repellent for preventing abs. The sugar content of the harvested summer strawberries was 13% at the beginning of June and 10.8% in July to August.

DESCRIPTION OF SYMBOLS 1 Raw material tank 2 Solid content storage tank 3 Liquid content storage tank 4 Primary processing tank 5 Secondary processing tank 6 Primary aging tank 6 'Secondary aging tank 7 Rotary sieve 8 Aeration blower 9 Injection nozzle 10 Pump 11 Valve 12 Liquid feeding hole 13 Mixing chamber 14 Intake port 15 Liquid supply pipe 16 Air supply pipe

Claims (5)

(A) A step of introducing a food processing waste liquid containing plant cells or fiber into a processing tank (C) Acetic acid bacteria and lactic acid bacteria are charged into the processing tank, and acetic acid fermentation and lactic acid fermentation are alternately performed by intermittent aeration, and fermentation A step of obtaining a product (D) comprising the above steps (A), (C), and (D) performed in the order of steps of obtaining the amino acid-containing solution by solid-liquid separation of the fermented product. Production method. (B) method for producing amino acid-containing solution of claim 1, step the step of injecting a gas-liquid two-phase flow in food processing waste (B) is characterized by being performed prior to said step (C). The method for producing an amino acid-containing liquid according to claim 1 or 2 , wherein the step (C) is carried out while maintaining the liquid temperature at 30 ° C or higher and 37 ° C or lower. Food processing waste liquid, amino acid-containing solution according to any one of claims 1 to 3, characterized in that a liquid fraction obtained by distillation residue or the evaporated Tomekasu the solid-liquid separation of shochu or awamori Manufacturing method. The food processing waste liquid is a suspension obtained by adding water to the viscous material separated from the amino acid-containing liquid in the step (D), according to any one of claims 1 to 3 . A method for producing an amino acid-containing liquid.

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