Additive for mushroom culture medium and manufacturing method of mushroom culture medium

Abstract

The invention provides an additive for a mushroom culture medium and a manufacturing method of the mushroom culture medium. The purpose of the present invention is to provide an additive for a mushroom culture medium, which can reduce the metering error and can improve the uniform mixing of an antacid in the culture medium. The additive for the mushroom culture medium comprises an incremental material and an anti-acid agent.

Description

Technical Field

[0001] The present disclosure relates to an additive for a mushroom culture medium and a method for producing a mushroom culture medium. Background Art

[0002] Patent Document 1 describes a mushroom cultivation medium in which shell fossil powder is formed into particles having a diameter of about 1 to 5 mm and the shell fossil powder particles are added to a culture medium at 0.3 to 3% of the weight of the culture medium. Prior art literature Patent Literature

[0003] Patent Document 1: Japanese Patent Application Publication No. 2001-178264 Summary of the invention Problems to be solved by the invention

[0004] In the mushroom cultivation medium described in Patent Document 1, the fruiting body yield corresponding to the amount of the added shell fossil powder may not be obtained.

[0005] According to the research of the inventors, when the amount of antacid added to the mushroom culture medium is excessive, it sometimes has an adverse effect on the mushroom yield increase effect. In addition, in the mushroom culture medium, when the antacid is not sufficiently and evenly dispersed, the local antacid concentration becomes high, and it is sometimes difficult to obtain the desired mushroom yield increase effect from the amount of antacid added. The purpose of the present disclosure is to provide an additive for mushroom culture medium, which can reduce measurement errors and improve the uniform mixing of antacids in the culture medium. Means of solving problems

[0006] A first embodiment of the present disclosure provides a mushroom culture medium additive including a bulking material and an antacid.

[0007] A second embodiment of the present disclosure is that in the first embodiment, the bulking material may include one or more selected from sawdust, corn cob powder, bagasse, beet pulp, tofu residue, coffee grounds, soybean hulls, rice bran, bran, and cottonseed hulls.

[0008] According to a third aspect of the present disclosure, in any one of the first and second aspects, the antacid may contain an aluminum compound.

[0009] A fourth aspect of the present disclosure is any one of the first to third aspects, wherein the antacid may further contain one or more selected from the group consisting of calcium compounds, magnesium compounds, and sodium compounds.

[0010] A fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the content of aluminum atoms in the antacid is 60% by weight or less in terms of oxide based on the total weight of the antacid.

[0011] A sixth aspect of the present disclosure is any one of the first to fifth aspects, wherein the content of calcium atoms in the antacid is 60% by weight or less in terms of oxide based on the total weight of the antacid.

[0012] A seventh aspect of the present disclosure is any one of the first to sixth aspects, wherein the content of magnesium atoms in the antacid is 30% by weight or less in terms of oxide based on the total weight of the antacid.

[0013] According to an eighth embodiment of the present disclosure, in any one of the first to seventh embodiments, a dry weight ratio of the bulking material to the antacid may be 99.5:0.5 to 10:90.

[0014] A ninth embodiment of the present disclosure is that in any one of the first to eighth embodiments, the angle of repose of the mushroom culture medium additive may be 50 degrees or less.

[0015] The tenth embodiment of the present disclosure provides a method for producing a mushroom culture medium, which includes the following steps: A step of mixing a bulking material and an antacid to obtain an additive for a mushroom culture medium, and The process of mixing the above-mentioned mushroom culture medium additive and culture medium raw materials to obtain mushroom culture medium. Effects of the Invention

[0016] According to the present disclosure, it is possible to provide an additive for a mushroom culture medium that can reduce a metering error of an antacid and improve uniform mixing properties in a culture medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram for explaining the method for producing mushroom culture medium. DETAILED DESCRIPTION

[0018] (First embodiment: Additive for mushroom culture medium) The mushroom culture medium additive of the present embodiment contains an extender material and an antacid. Since the mushroom culture medium additive of the present embodiment contains an extender material and an antacid, it is possible to reduce metering errors and improve uniform mixing in the culture medium. Although the present disclosure is not limited to a specific theory, the reason why the mushroom culture medium additive of the present disclosure can produce the above-mentioned effects is believed to be as follows.

[0019] According to the research of the inventors, it is believed that when mixing an antacid and a culture medium raw material, the difference in fluidity between the antacid and the culture medium raw material can affect the uniform mixing property. However, it is found that if the antacid and the bulking material are mixed in advance, the bulking material and the antacid can be evenly dispersed, and a mushroom culture medium additive with high fluidity can be obtained. In addition, since the above-mentioned mushroom culture medium additive contains the bulking material and the antacid, it is also possible to reduce the metering error. As a result, a mushroom culture medium additive that can reduce the metering error and improve the uniform mixing property in the culture medium can be achieved.

[0020] The bulking material may be any material that does not adversely affect the growth of mushroom fruiting bodies when the antacid is used. Adverse effects on the growth of mushroom fruiting bodies may include, for example, a decrease in the yield of mushroom fruiting bodies.

[0021] In one embodiment, the bulking material is preferably a material that does not dissolve aluminum, magnesium, and calcium even when in contact with an acid that can produce mushrooms. This allows the antacid to appropriately exert its effect of increasing the yield of mushroom fruiting bodies.

[0022] In this embodiment, regarding the bulking material, specifically, when a mixed solution obtained by adding 85 parts by weight of ion exchange water to 15 parts by weight of the bulking material is shaken at 160 rpm / min for 1 hour, the total elution amount of aluminum, magnesium and calcium is preferably 3000 mg / 100 g or less relative to 100 g of the bulking material. The total elution amount is more preferably 0 mg / 100 g or more and 1000 mg / 100 g or less, and further preferably 0 mg / 100 g or more and 550 mg / 100 g or less. In the above case, the amount of calcium dissolved out is 0 mg / 100 g to 3000 mg / 100 g, and the upper limit is preferably 1000 mg / 100 g or less, and more preferably 550 mg / 100 g or less. In the above case, the amount of magnesium eluted is 0 mg / 100 g to 3000 mg / 100 g, and the upper limit is preferably 1000 mg / 100 g or less, and more preferably 550 mg / 100 g or less. In the above case, the amount of aluminum eluted is 0 mg / 100 g to 1000 mg / 100 g, and the upper limit is preferably 500 mg / 100 g or less, and more preferably 100 mg / 100 g or less. By being within such a range, the effect of the antacid can be surely exhibited.

[0023] In another embodiment, the bulk material may preferably include one or more selected from sawdust, corn cob powder, bagasse, beet residue, tofu residue, coffee grounds, soybean hulls, rice bran, bran and cottonseed hulls, more preferably may include sawdust.

[0024] In this embodiment, the total content of wood chips, corn cob powder, bagasse, beet pulp, tofu residue, coffee grounds, soybean hulls, rice bran, bran and cottonseed hulls in 100 parts by weight of the total amount of the above-mentioned bulk materials is preferably from 80 parts by weight to 100 parts by weight, more preferably from 90 parts by weight to 100 parts by weight, and further preferably from 95 parts by weight to 100 parts by weight.

[0025] In the present disclosure, the content may be a content based on dry weight. The dry weight in the present disclosure refers to the weight measured immediately after drying the object to be measured at 105° C. for 3 hours to avoid moisture absorption.

[0026] The content of the above-mentioned incremental material in the total amount 100 weight % of the above-mentioned additive for mushroom culture medium is preferably from 10 weight % to 99.5 weight %, more preferably from 13 weight % to 99.2 weight %, further preferably from 17 weight % to 99 weight %, further preferably from 33 weight % to 98.4 weight %, and further preferably from 50 weight % to 98 weight %.

[0027] The above-mentioned antacid refers to a compound that can exhibit an effect of neutralizing acid. In the process of cultivating mushrooms, organic acids such as oxalic acid can be produced from mushroom fungi. Antacids can promote the growth of mushroom fruiting bodies by neutralizing the organic acids. In one embodiment, the antacid may be a compound whose pH of a 10 wt % aqueous dispersion of the antacid is higher than the pH of a 10 wt % aqueous dispersion of the nutrient described later. The pH of a 10 wt % aqueous dispersion of the antacid may be, for example, 5.5 to 13.0, and further may be 6.0 to 12.0.

[0028] In one embodiment, the antacid may preferably include an aluminum compound. In a more preferred embodiment, the antacid may include an aluminum compound and one or more selected from a calcium compound, a magnesium compound, and a sodium compound. In a further preferred embodiment, the antacid may include an aluminum compound and one or more selected from a calcium compound and a magnesium compound.

[0029] The aluminum compound, calcium compound, magnesium compound and sodium compound can be natural products or synthetic products. In addition, these compounds can also be hydrates. The form of these compounds can be, for example, gel, glass, porous body, powder, particles, etc. In a specific example, the antacid can contain 2 or more, 3 or more, or 4 or more of them. In a more specific example, the antacid can contain 1 to 5 of them, preferably 2 to 5 or more, for example 3.

[0030] In one embodiment, the aluminum compound may preferably include one or more selected from aluminum hydroxide, aluminum silicate, magnesium aluminum metasilicate, calcium aluminosilicate, calcium aluminosilicate glass, hydrated calcium aluminate, dawsonite, zeolite, hydrocalumite and hydrotalcite. The aluminum compound may more preferably include one or more selected from aluminum hydroxide and aluminum silicate. The aluminum compound may further preferably include aluminum hydroxide.

[0031] In one embodiment, the magnesium compound may preferably include one or more selected from magnesium carbonate, magnesium hydroxide, magnesium oxide, magnesium silicate, magnesium aluminum metasilicate and hydrotalcite. The magnesium compound may more preferably include one or more selected from magnesium silicate and magnesium hydroxide. The magnesium compound may further preferably include magnesium hydroxide.

[0032] In one embodiment, the sodium compound may preferably include one or more selected from the group consisting of sodium bicarbonate, sodium alginate, and dawsonite.

[0033] In one embodiment, the calcium compound may preferably include at least one selected from the group consisting of calcium carbonate, calcium hydroxide, calcium carbonate, calcium silicate, calcium aluminosilicate, calcium silicate glass reticularis, hydrated calcium aluminate, and hydrocalumite. More preferably, the calcium compound may include calcium hydroxide.

[0034] In one embodiment, the total content of the aluminum compound, the calcium compound, the magnesium compound and the sodium compound may preferably be 80 to 100 weight %, more preferably 90 to 100 weight %, and further preferably 95 to 100 weight % in the total amount of the antacid (100 weight %).

[0035] In one embodiment, the antacid may preferably include an aluminum compound, a calcium compound, and a magnesium compound. The antacid may more preferably include one or more selected from the group consisting of aluminum, calcium, and magnesium hydroxides, silicates, metasilicates, carbonates, double hydroxides, basic carbonates, oxides, bicarbonates, composite hydroxides, and alginates. The antacid may further preferably include aluminum hydroxide, calcium hydroxide, and magnesium hydroxide.

[0036] In one embodiment, the content of the aluminum atoms in the above-mentioned antacid is based on the gross weight of the above-mentioned antacid, and is converted by oxide (Al2O3), preferably 60 weight % or less, more preferably 5 weight % or more and 58 weight % or less, more preferably 10 weight % or more and 50 weight % or less, and further preferably 15 weight % or more and 40 weight % or less. The above ratio may be preferably 5 weight % or more, more preferably 10 weight % or more, and further preferably 15 weight % or more. In addition, the above ratio may be preferably 50 weight % or less, more preferably 45 weight % or less, and further preferably 40 weight % or less. When the additive for mushroom culture medium is used for Agaricus bisporus (Shigella ostreatus), the content of aluminum atoms in the antacid is preferably 1 weight % to 60 weight % based on the total weight of the antacid, and is converted as oxide (Al2O3), more preferably 1 weight % to 30 weight %. When the above-mentioned additive for mushroom culture medium is used for shiitake mushrooms, the content of aluminum atoms in the above-mentioned antacid is preferably 1 weight % to 60 weight % based on the total weight of the above-mentioned antacid, converted as oxide (Al2O3), and more preferably 1 weight % to 50 weight %. When the additive for mushroom culture medium is used for mushrooms, the content of aluminum atoms in the antacid is preferably 1% by weight to 60% by weight, and more preferably 1% by weight to 50% by weight, based on the total weight of the antacid, calculated as oxide (Al2O3). When the additive for mushroom culture medium is used for Maitake mushroom, the content of aluminum atoms in the antacid is preferably 1% by weight to 60% by weight, and more preferably 1% by weight to 58% by weight, based on the total weight of the antacid, calculated as oxide (Al2O3).

[0037] In the present disclosure, the content of a specific atom in terms of oxide based on the total weight of the antacid refers to the value obtained by dividing the weight-based content of the compound containing the specific atom by the molecular weight of the compound containing the specific atom and then multiplying it by the molecular weight of the oxide of the specific atom when the total weight of the antacid is set to 100% by weight. When the above-mentioned specific atom is an aluminum atom, the aluminum compound is equivalent to the compound containing the above-mentioned specific atom, and Al2O3 is equivalent to the oxide. Similarly, when the above-mentioned specific atom is a calcium atom, the calcium compound is equivalent to the compound containing the above-mentioned specific atom, and CaO is equivalent to the oxide. When the above-mentioned specific atom is a magnesium atom, the magnesium compound is equivalent to the compound containing the above-mentioned specific atom, and MgO is equivalent to the oxide.

[0038] In one embodiment, the content of calcium atoms in the above-mentioned antacid is preferably 60% by weight or less, more preferably 1% by weight or more and 50% by weight or less, more preferably 5% by weight or more and 35% by weight or less, and more preferably 10% by weight or more and 30% by weight or less, based on the total weight of the above-mentioned antacid, calculated as oxide (CaO). The above ratio is preferably 1% by weight or more, more preferably 5% by weight or more, more preferably 10% by weight or more, and more preferably 15% by weight or more. In addition, the above ratio may be preferably 60% by weight or less, more preferably 50% by weight or less, more preferably 35% by weight or less, and more preferably 30% by weight or less. When the above-mentioned mushroom culture medium additive is used for Amanita muscaria, the content of calcium atoms in the above-mentioned antacid is preferably 1% by weight or more and 60% by weight or less, more preferably 1% by weight or more and 55% by weight or less, based on the total weight of the above-mentioned antacid, calculated as oxide (CaO). When the additive for mushroom culture medium is used for shiitake mushrooms, the content of calcium atoms in the antacid is preferably 1% by weight to 30% by weight, and more preferably 1% by weight to 20% by weight, based on the total weight of the antacid, calculated as oxide (CaO). When the additive for mushroom culture medium is used for mushrooms, the content of calcium atoms in the antacid is preferably 0% by weight to 30% by weight, and more preferably 0% by weight to 20% by weight, based on the total weight of the antacid, calculated as oxide (CaO). When the additive for mushroom culture medium is used for Grifola frondosa, the content of calcium atoms in the antacid is preferably 0% by weight to 50% by weight, and more preferably 0% by weight to 48% by weight, based on the total weight of the antacid, in terms of oxide (CaO).

[0039] In one embodiment, the content of the magnesium atom in the above-mentioned antacid is based on the gross weight of the above-mentioned antacid, and is converted by oxide (MgO), and can be preferably less than 30 weight %, more preferably less than 20 weight %, and more preferably less than 2 weight % and less than 16 weight %. The above-mentioned ratio can be preferably more than 1 weight %, more preferably more than 2 weight %, more preferably more than 4 weight %, and more preferably more than 5 weight %. In addition, the above-mentioned ratio can be preferably less than 30 weight %, more preferably less than 20 weight %, more preferably less than 16 weight %, and more preferably less than 14 weight %. When the additive for mushroom culture medium is used for Agaricus tumefaciens, the content of magnesium atoms in the antacid is preferably 0% by weight to 30% by weight, and more preferably 0% by weight to 20% by weight, based on the total weight of the antacid, calculated as oxide (MgO). When the additive for mushroom culture medium is used for shiitake mushrooms, the content of magnesium atoms in the antacid is preferably 0% by weight to 30% by weight, and more preferably 0% by weight to 20% by weight, based on the total weight of the antacid, calculated as oxide (MgO). When the additive for mushroom culture medium is used for button mushrooms, the content of magnesium atoms in the antacid is preferably 0% by weight to 30% by weight, and more preferably 0% by weight to 20% by weight, based on the total weight of the antacid, calculated as oxide (MgO). When the additive for mushroom culture medium is used for Grifola frondosa, the content of magnesium atoms in the antacid is preferably 0% by weight to 30% by weight, and more preferably 0% by weight to 20% by weight, based on the total weight of the antacid, in terms of oxide (MgO).

[0040] The dry weight ratio of the bulking material to the antacid (bulking material: antacid) is preferably 99.5:0.5 to 10:90, more preferably 99.2:0.8 to 13:87, further preferably 99:1 to 17:83, further preferably 98.4:1.6 to 33:67, and further preferably 98:2 to 50:50. By making the weight ratio of the bulking material to the antacid within this range, the measurement error of the antacid raw material can be reduced, and the uniform mixing in the culture medium can be improved.

[0041] In the present disclosure, the dry weight ratio refers to the ratio of the dry weights of two or more materials.

[0042] In the total amount 100 weight % of the additive for mushroom culture medium, the total weight of the above-mentioned bulking material and the above-mentioned antacid may preferably be greater than 80 weight % and less than 100 weight %, more preferably greater than 90 weight % and less than 100 weight %, and further preferably greater than 95 weight % and less than 100 weight %.

[0043] The mushroom culture medium additive disclosed in the present invention may contain other components in addition to the aforementioned bulking material and the aforementioned antacid, and examples of such components include nutrients.

[0044] In one embodiment, the nutrient is a compound containing one or more selected from the group consisting of a potassium atom, a phosphorus atom, a nitrogen atom, and a sulfur atom, and exhibiting an effect of promoting the growth of mushroom fruit bodies. In one embodiment, the pH value of a 10 wt % aqueous dispersion of the nutrient may be, for example, 2.0 or more and less than 5.5, and further may be 3.0 or more and 5.0 or less.

[0045] In a certain embodiment, the above-mentioned nutrient may include one or more selected from phosphate compounds, nitric acid compounds and sulfuric acid compounds. These compounds may be natural products or synthetic products. In addition, these compounds may also be hydrates. The form of these compounds may be, for example, gel, glass, porous body, powder, particles, etc. In a specific example, the nutrient may include two or more, three or more, or four or more of them. In a more specific example, the nutrient may be 1 to 5 of them. In addition, the nutrient may be only one.

[0046] In one embodiment, the phosphate compound may include one or more selected from calcium monohydrogen phosphate, calcium dihydrogen phosphate, calcium phosphate, octacalcium phosphate, magnesium phosphate, magnesium monohydrogen phosphate, magnesium dihydrogen phosphate, aluminum phosphate and hydroxyapatite. The phosphate compound may preferably include one or more selected from calcium monohydrogen phosphate and calcium dihydrogen phosphate, and more preferably may include calcium dihydrogen phosphate.

[0047] In one embodiment, the nitric acid compound may include one or more selected from calcium nitrate, magnesium nitrate, and aluminum nitrate.

[0048] In one embodiment, the sulfuric acid compound may include one or more selected from the group consisting of calcium sulfate, magnesium sulfate, and aluminum sulfate.

[0049] In a certain embodiment, the nutrient preferably contains a phosphate compound, preferably contains one or more selected from monohydrogen phosphate compounds such as monocalcium phosphate and monomagnesium phosphate and dihydrogen phosphate compounds such as dicalcium phosphate and dimagnesium phosphate, more preferably contains a dihydrogen phosphate compound, and further preferably contains dicalcium phosphate.

[0050] In one embodiment, the content of the phosphate compound in 100 parts by weight of the nutrient is preferably 80 to 100% by weight, more preferably 90 to 100% by weight, and further preferably 95 to 100% by weight.

[0051] The mushroom culture medium additive disclosed in the present invention contains the above-mentioned weight materials and can have good fluidity. Therefore, it has good uniform mixing property with the culture medium raw materials described later.

[0052] In one embodiment, the angle of repose of the mushroom culture medium additive disclosed herein is preferably 25 degrees to 50 degrees, more preferably 27 degrees to 48 degrees, and even more preferably 30 degrees to 46 degrees. By setting the angle of repose of the mushroom culture medium additive within this range, the fluidity of the mushroom culture medium additive becomes good, and the mushroom culture medium additive and the culture medium raw material can be easily and uniformly mixed.

[0053] When the powder is deposited in the gravitational field to form a free surface, the angle of repose can be representatively understood as the angle formed by the surface of the powder layer and the horizontal plane. Therefore, the smaller the angle of repose of the additive for mushroom culture medium, the higher the fluidity of the additive for mushroom culture medium. In the present disclosure, the angle of repose can be measured by the angle of accumulation formed when the additive for mushroom culture medium is allowed to fall freely from a height of 50 mm in a lower receiving tray with a diameter of 80 mm.

[0054] In one embodiment, the ratio of the angle of repose of the mushroom culture medium additive disclosed herein to the angle of repose of the above-mentioned weight material (angle of repose of mushroom culture medium additive / angle of repose of weight material) may be preferably 0.95 times or more and 1.1 times or less, more preferably 0.98 times or more and 1.08 times or less, and further preferably 1 times or more and 1.05 times or less. By making the above-mentioned angle of repose ratio within this range, the fluidity of the mushroom culture medium additive becomes good, and the mushroom culture medium additive and the culture medium raw material can be easily and uniformly mixed.

[0055] In one embodiment, the water content contained in the mushroom culture medium additive of the present disclosure may be preferably 0% by weight to 30% by weight, more preferably 0% by weight to 25% by weight, and further preferably 0% by weight to 20% by weight, in the total amount of 100% by weight of the mushroom culture medium additive. By making the water content within the above range, the generation of lumps can be suppressed, and the uniformity can be further improved when mixing the mushroom culture medium additive and the mushroom culture medium raw material. In the present disclosure, the moisture content can be calculated based on the weight loss of the additive for mushroom culture medium after drying at 105° C. for 3 hours, and specifically, can be calculated by the following formula. Water content (weight %) = (weight before drying - weight after drying) / weight before drying × 100

[0056] In one embodiment, the bulk volume of the mushroom culture medium additive disclosed herein may be 2 cm 3 / g above 10cm 3 / g or less, more preferably 3cm 3 / g above 9cm 3 / g or less, more preferably 4cm 3 / g above 8cm3 By making the bulk specific volume within the above range, the measurement error of the raw materials can be reduced. In the present disclosure, the bulk specific volume can be measured by the volume when 10 g of a sample is quietly put into a 100 mL measuring cylinder.

[0057] The mushroom culture medium additive disclosed in the present invention can be used to cultivate various mushroom species. In one embodiment, the mushroom culture medium additive disclosed in the present invention can be used to cultivate shiitake mushrooms, button mushrooms, enoki mushrooms, agaricus, nameko, maitake mushrooms, king oyster mushrooms, hericium erinaceus, or oyster mushrooms, but is not limited thereto.

[0058] (Second embodiment: Method for producing mushroom culture medium) The method for producing mushroom culture medium is also included in the technical scope of the present disclosure.

[0059] The method for producing the mushroom culture medium disclosed in the present invention comprises the following steps: A step of mixing a bulking material and an antacid to obtain an additive for a mushroom culture medium, and The process of mixing the above-mentioned mushroom culture medium additive and culture medium raw materials to obtain mushroom culture medium.

[0060] Hereinafter, the step of mixing the bulking material and the antacid to obtain the additive for mushroom culture medium is referred to as the first mixing step, and the step of mixing the additive for mushroom culture medium and the culture medium raw material to obtain the mushroom culture medium is referred to as the second mixing step.

[0061] The aforementioned bulk material has the same meaning as the bulk material in the first embodiment. In addition, the aforementioned antacid has the same meaning as the antacid in the first embodiment. All matters described in the first embodiment are applicable to this embodiment.

[0062] In the first mixing step, the bulking material and the antacid are mixed to obtain a mushroom culture medium additive. In the manufacturing method disclosed herein, by mixing the bulking material and the antacid, a mushroom culture medium additive with high fluidity can be obtained. By further mixing the mushroom culture medium additive with a culture medium raw material to manufacture a mushroom culture medium, it is possible to reduce the metering error of the antacid raw material and improve the uniform mixing property in the culture medium.

[0063] In the total amount of 100 wt% of the bulking material and the antacid, the content of the bulking material may be preferably 10 wt% or more and 99.5 wt% or less, more preferably 13 wt% or more and 99.2 wt% or less, further preferably 17 wt% or more and 99 wt% or less, further preferably 33 wt% or more and 98.4 wt% or less, and further preferably 50 wt% or more and 98 wt% or less. In the total amount of 100 wt% of the additive for mushroom culture medium, the content of the bulking material may be preferably 10 wt% or more, more preferably 13 wt% or more, further preferably 17 wt% or more, further preferably 33 wt% or more, further preferably 50 wt% or more, and may be preferably 99.99 wt% or less, more preferably 99.8 wt% or less, further preferably 99.5 wt% or less, further preferably 99 wt% or less, and further preferably 95 wt% or less.

[0064] The weight ratio of the bulking material to the antacid (bulking material: antacid) is preferably 99.5:0.5 to 10:90, more preferably 99.2:0.8 to 13:87, further preferably 99:1 to 17:83, further preferably 98.4:1.6 to 33:67, and further preferably 98:2 to 50:50. By making the weight ratio of the bulking material to the antacid within this range, the metering error of the additive for the mushroom culture medium can be reduced, and the uniform mixing in the culture medium can be improved.

[0065] The mixing in the first mixing step can be performed by a means (method) for producing a mushroom culture medium. Representatively, oscillation and stirring are mentioned as the above-mentioned mixing means, but are not limited thereto. In one embodiment, stirring is preferred as the above-mentioned mixing means. By adopting stirring as the mixing means, reliable mixing can be achieved, and the uniformity of the obtained mushroom culture medium can be further improved.

[0066] The stirring can be typically performed using a stirring device having a stirring blade. Examples of the stirring blade include a belt-type spiral blade and a screw.

[0067] The temperature in the first mixing step is preferably 0° C. to 60° C., more preferably 0° C. to 40° C., and even more preferably 0° C. to 45° C. The mixing time in the first mixing step is preferably 1 minute to 2 hours, more preferably 1 minute to 1 hour, and even more preferably 1 minute to 30 minutes.

[0068] In the second mixing step, the mushroom culture medium additive is mixed with the culture medium raw material to obtain a mushroom culture medium. The mushroom culture medium additive can reduce measurement errors due to improved fluidity and can improve uniform mixing of components contained in the culture medium, such as a representative antacid component.

[0069] The above-mentioned culture medium raw materials can be appropriately selected according to the mushroom species and culture conditions to be cultured by those skilled in the art. In one embodiment, the mushroom culture medium raw materials may include base agents such as sawdust (e.g., fir tree sawdust), corn cob powder, bagasse, and beet pulp, and nutrients such as rice bran, bran, cottonseed hulls, tofu residues, coffee grounds, and soybean hulls. The composition of the above-mentioned bulk material may be the same as or different from that of the culture medium raw material.

[0070] The amount of the additive for mushroom culture medium may preferably be 10 parts by weight to 90 parts by weight, more preferably 20 parts by weight to 80 parts by weight, and even more preferably 30 parts by weight to 70 parts by weight, relative to 100 parts by weight of the total amount of the culture medium raw materials.

[0071] The mixing in the second mixing step can be performed by the same means as described as the mixing means in the first mixing step.

[0072] In the second mixing step, water may be allowed to coexist when mixing the mushroom culture medium additive and the culture medium raw material. Such coexistence of water can be implemented, for example, by supplying water to the mixture of the mushroom culture medium additive and the culture medium raw material. The method of supplying water is not particularly limited, and it can be implemented representatively by spraying water.

[0073] The temperature in the second mixing step is preferably 0° C. to 60° C., more preferably 0° C. to 40° C., and even more preferably 0° C. to 45° C. The mixing time in the second mixing step is preferably 1 minute to 2 hours, more preferably 1 minute to 1 hour, and even more preferably 1 minute to 30 minutes.

[0074] The following is based on Figure 1 The mushroom culture medium production system is schematically shown to more specifically describe this embodiment.

[0075] exist Figure 1In the mushroom culture medium manufacturing system shown, first, the bulk material stored in the bulk material tank 2 and the antacid stored in the antacid tank 3 are put into the first stirring tank 4a of the first stirring device 10a. The bulk material and antacid put in are stirred by the first stirring blade 6a fixed to the first stirring shaft 5a to manufacture the mushroom culture medium additive. The mushroom culture medium additive is recovered from the bottom of the first stirring tank 4a and transported to the second stirring device 10b.

[0076] Next, the mushroom culture medium additive produced in the first stirring device 10a and the culture medium raw material stored in the culture medium raw material tank 7 are put into the second stirring tank 4b of the second stirring device 10b. The put-in mushroom culture medium additive and culture medium raw material are stirred by the second stirring blade 6b fixed to the second stirring shaft 5b. When stirring the mushroom culture medium additive and the culture medium raw material, water can be sprayed on the mixture from the sprinkler 8. By stirring the mushroom culture medium additive and the culture medium raw material, a mushroom culture medium is produced. The obtained mushroom culture medium is recovered from the bottom of the second stirring tank 4b and stored in the mushroom culture medium recovery container 9.

[0077] exist Figure 1 In the embodiment, the first stirring device 10a and the second stirring device 10b are different from each other, but the present invention is not limited thereto, and the same stirring device may be used as the first stirring device 10a and the second stirring device 10b. This embodiment can be implemented, for example, by connecting the culture medium raw material tank 7 and the first stirring device 10a. Specifically, after the mushroom culture medium additive is manufactured in the first stirring device 10a, the culture medium raw material stored in the culture medium raw material tank 7 is further added to the first stirring device 10a and stirred, thereby manufacturing the mushroom culture medium.

[0078] In the present embodiment, the bulk material, antacid and culture medium raw material are stored in the bulk material tank 2, the antacid tank 3 and the culture medium raw material tank 7, respectively, but the present disclosure is not limited thereto. One or more selected from the bulk material and the antacid can be directly added to the first stirring tank 4a without passing through the bulk material tank 2 and / or the antacid tank 3. In addition, the culture medium raw material can also be directly added to the second stirring tank 4b without passing through the culture medium raw material tank 7.

[0079] The recovered mushroom culture medium can be directly stored and filled into individual containers.

[0080] According to the present disclosure, a mushroom culture medium additive can be provided, which can reduce metering errors and improve uniform mixing in the culture medium. The mushroom culture medium additive disclosed in the present disclosure can be used to cultivate various mushroom species. In one embodiment, the mushroom culture medium additive disclosed in the present disclosure can be used to cultivate shiitake mushrooms, button mushrooms, enoki mushrooms, agaricus, nameko, white button mushrooms, maitake mushrooms, king oyster mushrooms, hericium erinaceus, or oyster mushrooms. Example

[0081] The present invention is described in more detail by the following examples, but the present invention is not limited thereto.

[0082] (Example 1) 18 parts by weight of aluminum hydroxide, 65 parts by weight of calcium hydroxide and 17 parts by weight of magnesium hydroxide were mixed to prepare an antacid (hereinafter also referred to as "antacid 1"). Next, 95 parts by weight of fir sawdust as an increaser and 5 parts by weight of the antacid were placed in a polypropylene container and stirred thoroughly to obtain the additive for mushroom culture medium disclosed in the present invention.

[0083] Next, 50 parts by weight of the mushroom culture medium additive of the present invention and 50 parts by weight of fir sawdust as a culture medium raw material were placed in a polypropylene container, and shaken for 1 minute at 220 times per minute to obtain the mushroom culture medium of the present invention. In addition, in this embodiment, fir sawdust was used for the convenience of measuring the concentrations of aluminum, calcium and magnesium, and the culture medium raw material is not limited to fir sawdust.

[0084] (Pine volume) The sample was quietly poured into a 100 mL measuring cylinder to measure the pine specific volume. As the sample, the antacid 1, fir sawdust, and the additive for mushroom culture medium obtained in Example 1 were used.

[0085] [Table 1] Antacids 1 Fir sawdust Additives for mushroom culture medium Pine volume <![CDATA[3cm 3 / g]]> <![CDATA[6.3cm 3 / g]]> <![CDATA[6.1cm 3 / g]]>

[0086] (Determination of moisture content) Prepare a clean weighing bottle and measure only the weight of the weighing bottle. Next, weigh about 1.0 g of the sample into the measuring bottle, and measure the total weight of the weighing bottle and the sample (before drying). With the lid of the weighing bottle open, put it into a dryer and dry it at 105°C for 3 hours. After drying, close the lid of the weighing bottle and naturally cool it to room temperature in the dryer. After the temperature is sufficiently lowered, measure the total weight of the weighing bottle and the sample (after drying). Calculate the drying loss (moisture content) according to the following calculation formula. As samples, antacid 1, fir sawdust and the additive for mushroom culture medium obtained in Example 1 were used.

[0087] [Number 1]

[0088] [Table 2]

[0089] (Determination of the angle of repose) As a measuring device for the angle of repose, a suspension-electromagnetic vibration type angle of repose measuring device TYPE AOR-14 manufactured by Tsutsui Rikagaku Instruments Co., Ltd. was used to measure the angle of accumulation formed when the mushroom culture medium additive was allowed to fall freely from a height of 50 mm in a lower receiving tray having a diameter of 80 mm. As samples, antacid 1, cedar sawdust, and the mushroom culture medium additive obtained in Example 1 were used, and the ratio of the angle of repose of the mushroom culture medium additive to the angle of repose of the cedar sawdust (angle of repose of the mushroom culture medium additive / angle of repose of the cedar sawdust) was calculated.

[0090] [Table 3] Antacids 1 Fir sawdust Additives for mushroom culture medium Ratio of angle of repose Angle of repose 49.3° 43.1° 44.9° 1.04

[0091] (Comparative Example 1) 2.5 parts by weight of Antacid 1 and 97.5 parts by weight of cedar sawdust as a raw material of a culture medium were placed in a polypropylene container, and the container was shaken at 220 times per minute for 1 minute to obtain a culture medium of a comparative example.

[0092] (Concentration determination) In Example 1 and Comparative Example 1, 0.5 g of the mushroom culture medium of Example 1 or the culture medium of Comparative Example 1 was sampled from the top, middle, and bottom of the polypropylene container after shaking, dissolved by microwave method, and fixed to 50 mL. The obtained solution was diluted to a concentration that can be measured by high-frequency inductively coupled plasma emission spectrometry (ICP emission spectrometry), and the concentrations of aluminum, calcium, and magnesium were measured. The obtained concentrations were converted into the content in the additive for mushroom culture medium in Example 1 and the content in antacid 1 in Comparative Example 1, and the uniform dispersion was evaluated as the oxide conversion value.

[0093] The results are shown in Table 1. In Table 1, Al2O3 represents the content of aluminum in terms of oxide, CaO represents the content of calcium in terms of oxide, and MgO represents the content of magnesium in terms of oxide.

[0094] [Table 4]

[0095] When 2.5 parts by weight of antacid 1 and 97.5 parts by weight of fir sawdust are uniformly mixed, the theoretical values ​​of the oxide conversion values ​​of the contents of each element are: aluminum (converted as Al2O3) is 0.243 weight%, calcium (converted as CaO) is 1.242 weight%, and magnesium (converted as MgO) is 0.296 weight%.

[0096] Example 1 is an example of the present disclosure. When sampling the mushroom culture medium at any of the top, middle, and bottom, it was confirmed that the content of each element was substantially the same as the theoretical value. Therefore, it can be said that the mushroom culture medium additive disclosed in the present disclosure can reduce measurement errors and improve uniform mixing in the mushroom culture medium.

[0097] Comparative Example 1 is an example in which the antacid and the culture medium raw material are directly mixed. In the upper part of the mixing container, it was confirmed that the content of aluminum, calcium, and magnesium was low, and in the bottom of the mixing container, it was confirmed that the content of aluminum, calcium, and magnesium was high. It can be said that when the antacid and the culture medium raw material are directly mixed, the uniform mixing in the mushroom culture medium is poor, and a measurement error occurs. Industrial Applicability

[0098] According to the present disclosure, a mushroom culture medium additive can be provided, which can reduce metering errors and improve uniform mixing in the culture medium. The mushroom culture medium additive disclosed in the present disclosure can be used to cultivate various mushroom species. In one embodiment, the mushroom culture medium additive disclosed in the present disclosure can be used to cultivate shiitake mushrooms, button mushrooms, enoki mushrooms, agaricus, nameko, maitake mushrooms, king oyster mushrooms, hericium erinaceus, or oyster mushrooms.

[0099] Description of Reference Numerals 1 Mushroom culture medium manufacturing system 2 Incremental material tanks 3 Antacid jars 4a 1st stirring tank 4b Second stirring tank 5a 1st stirring shaft 5b Second stirring shaft 6a 1st stirring blade 6b 2nd stirring blade 7 Culture medium raw material tank 8 Sprinklers 9 Mushroom culture medium recovery container 10a The first stirring device 10b Second stirring device

Claims

1. An additive for mushroom culture medium, comprising a bulking material and an antacid.

2. The mushroom culture medium additive according to claim 1, wherein The bulking material comprises at least one selected from the group consisting of sawdust, corn cob powder, bagasse, beet pulp, tofu residue, coffee grounds, soybean hulls, rice bran, bran and cottonseed hulls.

3. The mushroom culture medium additive according to claim 1, wherein: The antacid contains an aluminum compound.

4. The mushroom culture medium additive according to claim 3, wherein: The antacid further contains one or more compounds selected from the group consisting of calcium compounds, magnesium compounds and sodium compounds.

5. The mushroom culture medium additive according to claim 3, wherein: The content of aluminum atoms in the antacid is 60% by weight or less in terms of oxide based on the total weight of the antacid.

6. The mushroom culture medium additive according to claim 4, wherein: The content of calcium atoms in the antacid is 60% by weight or less in terms of oxide based on the total weight of the antacid.

7. The mushroom culture medium additive according to claim 4, wherein: The content of magnesium atoms in the antacid is 30% by weight or less in terms of oxide based on the total weight of the antacid.

8. The mushroom culture medium additive according to any one of claims 1 to 7, wherein The dry weight ratio of the bulking material to the antacid is 99.5:0.5 to 10:

90.

9. The mushroom culture medium additive according to claim 1, characterized in that: The angle of repose is less than 50 degrees.

10. A method for producing a mushroom culture medium, comprising the following steps: A step of mixing a bulking material and an antacid to obtain an additive for a mushroom culture medium, and The process of mixing the mushroom culture medium additive with a culture medium raw material to obtain a mushroom culture medium.

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