JP5527803B2 - Mushroom cultivation additive, mushroom artificial culture medium, and mushroom artificial cultivation method using the same - Google Patents

Description

  The present invention relates to an additive for cultivation of mushrooms, an artificial culture medium for mushrooms, and a method for artificial cultivation of mushrooms using the same.

  Conventionally, the cultivation of mushrooms has mostly been cultivating cypress trees using raw wood such as kunugi, beech, and nara. Therefore, there has been a problem that harvesting is often influenced by weather conditions. In addition, the cultivation period of the wood is long, and it takes one and a half to two years from the inoculation of the inoculum to the harvest of the mushrooms, so that the production cost is considerably high.

Therefore, in recent years, for example, enokitake, hiratake, nameko, shiitake, etc. have been established a method for artificial cultivation of fungus beds using a medium in which rice bran is mixed with sawdust and cultivated in bottles or boxes. Regardless of the situation, these mushrooms can be harvested stably.
In other words, the traditional mushroom cultivation, which has a strong side-business character at farmers and relies on small-scale production, is now shifting to a fungus bed artificial cultivation method that allows large-scale specialized production and is easy to obtain raw materials. is there.
Here, the culture medium is a liquid or solid substance prepared for culturing microorganisms or animal and plant tissues, and is also called a culture medium.
However, even in this fungal bed artificial cultivation, in order to continuously cultivate mushrooms in large quantities, the yield is still low and the cultivation period is quite long, so the production cost is not low, and in the future these productivity Improvement is eagerly desired.

  As a method for improving productivity, a method of blending a specific compound in a medium is known. For example, in the medium, an aluminosilicate compound (Patent Document 1), a magnesium aluminum silicate compound (Patent Document 2 or Patent Document 3), a calcium aluminosilicate compound (Patent Document 4, Patent Document 5, and Patent Document 6), Examples thereof include calcium aluminate compounds (Patent Document 7 and Patent Document 8), and those using calcium aluminate compounds and sulfates in combination (Patent Document 7).

On the other hand, it has been proposed to use a sulfate such as aluminum sulfate and calcium aluminosilicate as a culture medium for mushroom cultivation (Patent Document 5).
However, Patent Document 5 has no description about prescribing the pH of the additive for cultivation of mushrooms.

Also proposed is an artificial culture medium for mushrooms containing one or more selected from the group consisting of calcium aluminosilicate glass and alkaline earth metal oxides, hydroxides, and composite hydroxides. (Patent Document 9).
However, Patent Document 9 has no description about prescribing the pH of the additive for cultivation of mushrooms.

Japanese Patent No. 2829400 Japanese Patent No. 2860959 JP 2002-119133 A Japanese Patent No. 2766702 JP-A-11-243773 Japanese Patent Laid-Open No. 2003-070351 Japanese Patent No. 3534295 Japanese Patent Application Laid-Open No. 2003-070349 JP 2006-271303 A

  The present invention is intended to solve the above-mentioned problems, and an additive for cultivating mushrooms that can be cultivated in a high yield and in a short period of time with a good shape and size, an artificial culture medium for mushrooms, and It aims at providing the artificial cultivation method of the mushroom using it.

The present invention employs the following means in order to solve the above problems.
(1) and the aqueous solution is an inorganic salt is acidic, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except, calcium aluminates is excluded), an alkaline earth metal hydroxide, an alkali It comprises one or more selected from the group consisting of complex hydroxides of earth metals and hydrotalcite, and the maximum pH measured by the Fuchs method test is 3.5 to 4.5. It is an additive for cultivation of mushrooms .
(2) Alkaline earth metal oxides, alkaline earth metal complex oxides (except calcium aluminates), alkaline earth metal hydroxides, alkaline earth metal complex hydroxides, and The additive for cultivating mushrooms according to (1) above, further comprising calcium aluminosilicate glass in one or more selected from the group consisting of hydrotalcite.
(3) the inorganic salt is cultivation additive mushroom (1) or (2), characterized in that an aluminum salt.
(4) the aluminum salt is cultivation additive mushrooms of the (3), characterized in that aluminum sulfate.
(5) The mushroom additive for cultivation according to any one of (1) to ( 4 ) above, wherein the time to reach pH 3.0 measured by the Fuchs method test is within 120 seconds .
(6) A mushroom artificial culture medium comprising the cultivation additive of any one of (1) to ( 5 ) above .
(7) A method for artificial cultivation of mushrooms using the artificial culture medium for mushrooms of ( 6 ).

  When the artificial culture medium of the mushroom of the present invention is used, mushrooms having a good shape and size can be cultivated with a high yield.

  The parts and% used in the present invention are based on mass unless otherwise specified.

  The artificial culture medium used in the present invention is a medium mainly composed of a carbon source such as sawdust, corn cob, bran and rice bran, a nitrogen source such as rice bran and soybean meal, and an inorganic salt in which the aqueous solution exhibits acidity, Selected from the group consisting of calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite hydroxide, and hydrotalcite The mushroom cultivation additive having a maximum pH of 3.5 to 4.5 measured by the Fuchs method test is an essential component. An appropriate amount of water is added to these mixtures, which are packed into bottles or boxes to form mushroom artificial culture media.

  The amount of the carbon source, the amount of the nitrogen source, and the amount of water for preparing the medium vary depending on the type and the amount of water contained therein, and are not uniquely determined. For example, when sawdust is used as a carbon source, the sawdust can be used in a dry state (dry matter amount) in a range of about 20 to 90% of the total dry matter amount of the medium. fluctuate. For example, when rice bran is used as the nitrogen source, the sawdust is preferably about 40 to 70% of the total amount of dry matter in terms of dry matter. In addition, when sawdust is used in a dry matter amount in the range of 20 to 90% of the total dry matter of the medium, water is added to a mixture in which sawdust and rice bran are mixed at a mass ratio of 1: 1 to obtain a moisture content of 55 to 55%. What is adjusted to 70% is preferably prepared by crushing into a bottle or box. Moreover, as sawdust, hardwood sawdust or coniferous sawdust can be used alone or in combination.

The cultivation additive mushroom used in the present invention, an inorganic salt aqueous solution is acidic, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except for calcium aluminates) One or more selected from the group consisting of alkaline earth metal hydroxides, alkaline earth metal composite hydroxides, and hydrotalcites , or these and calcium aluminosilicate glass The maximum pH measured in the Fuchs method test is 3.5 to 4.5.

The inorganic salt in which the aqueous solution used in the present invention exhibits acidity (hereinafter referred to as the present inorganic salt) refers to a salt that exhibits acidity of, for example, about pH 4 or more and less than 7 by hydrolysis, and is classified into a normal salt and an acid salt. Is done.
Here, the pH of the aqueous solution refers to the pH when 50 g of the present inorganic salt is dissolved in 1 liter of water in an environment of 20 ° C.
The normal salt in which an aqueous solution is acidic refers to a salt formed by a neutralization reaction between a strong acid and a weak base. For example, iron chloride (FeCl ₃ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ), iron sulfate (II ) (FeSO ₄ ), aluminum chloride (AlCl ₃ ), and aluminum fluoride (AlF ₃ ).
On the other hand, an acidic salt in which an aqueous solution is acidic refers to a salt containing H of an acid generated by a neutralization reaction between a strong acid and a strong base or a neutral acid and a strong base. For example, hydrogen sulfate Examples include sodium (NaHSO ₄ ), potassium hydrogen sulfate (KHSO ₄ ), sodium dihydrogen phosphate (NaH ₂ PO ₄ ), and aluminum hydrogen phosphate (Al ₂ (HPO ₄ ) ₃ ).
As the inorganic salt, an aluminum salt is effective from the viewpoint of performance, and an aluminum salt is preferable from the viewpoint of cost. Examples thereof include aluminum sulfate (Al ₂ (SO ₄ ) ₃ ) and aluminum chloride (AlCl ₃ ). Of these, aluminum sulfate is preferable from the viewpoint of cost.
There are anhydrous aluminum sulfate and those with water of crystallization, and any of them can be used. However, anhydrous aluminum sulfate is preferable because it has a fine powder and good dispersibility with respect to an artificial culture medium.
The particle size of the inorganic salt is preferably 2,000 to 10,000 cm ² / g in terms of the specific surface area value by the brane method (hereinafter referred to as the “brane specific surface area value”) from the viewpoint of improving the quality and yield of mushrooms and the power of grinding. .

The calcium aluminosilicate glass used in the present invention is obtained by heating and melting a CaO raw material, an Al ₂ O ₃ raw material, and a SiO ₂ raw material in an electric furnace, a high frequency furnace, etc., and as the CaO raw material, quick lime, slaked lime, and limestone As the Al ₂ O ₃ raw material, alumina or bauxite can be used, and as the SiO ₂ raw material, silica, quartz sand, quartz, or the like can be used.

These raw materials contain impurities such as MgO, TiO ₂ , Fe ₂ O ₃ , Na ₂ O, and K ₂ O, but are acceptable as long as the effects of the present invention are not impaired. Is.

From the aspect of improving the quality and yield of mushrooms, the CaO content of the calcium aluminosilicate glass is preferably 30-60%, the Al ₂ O ₃ content is 10-65%, and the SiO ₂ content is preferably 5-45%. More preferably, the CaO content is 40-60%, the Al ₂ O ₃ content is 10-40%, and the SiO ₂ content is 10-40%.

  The vitrification rate of the calcium aluminosilicate glass of the present invention is preferably 50% or more from the viewpoint of improving the quality and yield of the mushrooms.

The measuring method of vitrification rate can be performed by Rietveld analysis using the X-ray diffraction pattern shown below, for example.
That is, a predetermined amount of an internal standard substance such as aluminum oxide or magnesium oxide is added to the pulverized sample, and after sufficient mixing in an agate mortar or the like, powder X-ray diffraction measurement is performed. Analyze the measurement results with quantitative software to determine the vitrification rate. As the quantitative software, “SIROQUANT” manufactured by Sietronics can be used.

The particle size of the calcium aluminosilicate glass used in the present invention is preferably 2,000 to 10,000 cm ² / g in terms of Blaine specific surface area from the viewpoint of improving the quality and yield of mushrooms and from the viewpoint of grinding power.

Examples of the alkaline earth metal oxide used in the present invention include beryllium oxide (BeO), magnesium oxide (MgO), calcium oxide (CaO), strontium oxide (SrO), and barium oxide (BaO). Examples of the alkaline earth metal composite oxide include calcium silicate (for example, 2CaO · SiO ₂ and 3CaO · SiO ₂ ) and Portland cement. Among these, it is preferable to use an alkaline earth metal oxide such as magnesium oxide (MgO) or calcium oxide (CaO) from the viewpoint of mushroom quality, yield improvement, and economic efficiency.
The particle size of the alkaline earth metal oxide or the alkaline earth metal composite oxide is preferably 2,000 to 10,000 cm ² / g in terms of Blaine specific surface area.

The alkaline earth metal hydroxide and alkaline earth metal composite hydroxide used in the present invention may be crystalline or amorphous, and any of them can be used.
Crystalline alkaline earth metal hydroxides include Ca (OH) ₂ and Mg (OH) ₂ , and crystalline alkaline earth metal complex hydroxides include 2CaO-Al ₂ O _{3 -SiO 2 -8H 2 O CaO-Al} 2 O 3 -SiO 2 -H 2 O -based compound such _{as, 2CaO-Al 2 O 3 -8H} 2 O CaO-Al 2 O 3 -H 2 O -based compounds such as, And CaO—SiO ₂ —H ₂ O compounds such as 5CaO-6SiO ₂ -5H ₂ O (tobermorite). It is also possible to use hydroxides or composite hydroxides in which Ca is replaced by Be, Mg, Sr, or Ba. Use Mg or Ca from the standpoint of improving the quality and yield of mushrooms and economically. Is preferred.
The particle size of the alkaline earth metal hydroxide is preferably 2,000 to 10,000 cm ² / g in terms of Blaine specific surface area.
The particle size of the alkaline earth metal composite hydroxide is preferably 0.5 to ²⁰ m ² / g in terms of the specific surface area (hereinafter referred to as BET specific surface area value) by the BET method.

  Further, in the present invention, alkaline earth metal hydroxides or substances obtained by carbonated composite hydroxides can be used as alkaline earth metal composite hydroxides. Examples include dolomite.

The composition ratio of the composite hydroxide is not particularly limited, but from the viewpoint of improving the quality and yield of the mushroom, the content of alkaline earth metal oxides such as CaO is 10 to 60%, Al ₂ O The content of ₃ is preferably 0 to 50%, the content of SiO ₂ is preferably 0 to 50%, and the content of H ₂ O is preferably 10 to 50%.

These composite hydroxides may be hydrothermally synthesized using calcium hydroxide, magnesium hydroxide, barium hydroxide, aluminum hydroxide, silica sol, and silica gel as raw materials, or hydrated like calcium aluminate compounds. Those exhibiting activity may synthesize CaO and Al ₂ O ₃ and react with water to synthesize a composite hydroxide.

The hydrotalcite used in the present invention has a general formula of [M ²⁺ _6-6x M ³⁺ _6x (OH) ₁₂ ] ^{6x +} (A ⁿ⁻ ) _{6x / n} · yH ₂ O (where M ²⁺ is mg ²⁺ and Zn divalent metal ions such as ^2+, M ³⁺ is a trivalent metal ion, a ^n-is CO ₃ ^2-n-valent anion, such as such as Al ^3+, n is n ≧ 1, x is a compound represented by 0.1 ≦ x ≦ 0.5 and y is y ≧ 0).
The particle size of the hydrotalcite is preferably 0.5 to ²⁰ m ² / g as a BET specific surface area value.

Cultivating additives mushroom used in the present invention, the present inorganic salts, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except, calcium aluminates are excluded), alkaline earth metal One or two or more selected from the group consisting of the above hydroxide, alkaline earth metal composite hydroxide, and hydrotalcite , or these and calcium aluminosilicate glass .
And the inorganic salts, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except for calcium aluminates), alkaline earth metal, composite hydroxide of an alkaline earth metal One or two or more selected from the group consisting of a product and hydrotalcite , or the blending amount of these and calcium aluminosilicate glass is not particularly limited because it varies depending on the type of medium and mushrooms to be cultivated. , Usually determined by the maximum pH and time of arrival measured in the Fuchs method test.

  Fuchs method test is to take 50 ml of 0.1N hydrochloric acid in a beaker, add 1g mushroom cultivation additive, stir, measure pH (initial pH), and after 10 minutes from the start of stirring, This is a method of adding 2 ml of hydrochloric acid every 10 minutes, reading the pH, and continuing until it reaches the first pH, depending on the time from the first pH until the pH reaches 3.0 (arrival time) and the maximum pH after the arrival time. The quality and yield of mushrooms are evaluated.

  From the aspect of improving the quality and yield of the mushroom, the additive for cultivation of mushrooms of the present invention preferably has a maximum pH of 3.5 to 4.5 measured by the Fuchs method test. In order to adjust the maximum pH to 3.5 to 4.5, it is possible to change the component ratio of the additive for cultivation of mushrooms or the chemical composition of each component.

  The arrival time measured by the Fuchs method test is preferably within 15 minutes, more preferably within 120 seconds, from the viewpoint of improving the quality of the mushroom and the yield.

  The inorganic salt, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite hydroxide, and hydrotalcite The amount to be used is not particularly limited because it varies depending on the type of medium and mushrooms to be cultivated, and depends on the maximum pH measured in the Fuchs method test. 5 parts, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite hydroxide, and hydrotalcite It is preferable to use 1 to 5 parts in combination of one or more selected from the group.

  Each component of the additive for cultivation of mushrooms has been used for the purpose of improving the yield of mushrooms, but by using them together, a synergistic effect is exhibited, and the quality and yield of mushrooms are greatly improved. To do.

The method for cultivating mushrooms using the artificial culture medium of the present invention is not particularly limited because it can be arbitrarily changed according to each environment, situation, etc., but usually the addition of mushroom cultivation of the present invention Water is added to the artificial culture medium containing the material, the water content of the artificial culture medium is adjusted to 50-70%, sterilized and cooled as necessary, and then inoculated with bacteria, which is usually adopted for each mushroom It is preferable to carry out according to the culture process and growth conditions.
For example, in the case of Bunameji cultivation, the artificial culture medium inoculated with the fungus is cultured at 22-26 ° C. for 30-40 days, then matured for 40-50 days under almost the same conditions as the culture, and after the fungus is scraped, the temperature is 14-17 ° C. Growing for 20-25 days at a humidity of 95-100%, cultivating and harvesting bamboo shoots.
In the case of Shiitake cultivation, the artificial culture medium inoculated with the fungus is cultured at 20-25 ° C. for about 30 days, then aged at 26-30 ° C. for 40-50 days, and then at a temperature of 13-17 ° C. for 1-3 days. Harvest shiitake mushrooms that have been treated at a low temperature for about 10 days at a temperature of 17 to 20 ° C and a humidity of 90 to 95%. At this time, the second shiitake is harvested again after the first harvest. Is also possible.

  The mushrooms cultivated in the present invention are mushrooms that can be artificially cultivated, and examples thereof include enokitake mushrooms, octopus mushrooms, nameko mushrooms, bean mushrooms, maitake mushrooms, jellyfish mushrooms, monkey mushrooms, and shiitake mushrooms.

  Hereinafter, the present invention will be described in more detail based on experimental examples, but the present invention is not limited thereto.

Experimental example 1
CaO raw material, Al ₂ O ₃ raw material, and SiO ₂ raw material are mixed at a predetermined ratio, melted in a high frequency furnace and rapidly cooled, synthesized aluminosilicate calcium glass, pulverized, and brain specific surface area value 6,000cm ² / g It was.
On the other hand, a medium consisting of 250 g of hardwood sawdust, 250 g of coniferous sawdust, 500 g of rice bran, and 140 ml of water was prepared, and after mixing 1,000 parts of the medium with the inorganic salt and calcium aluminosilicate glass shown in Table 1, they were mixed and plastic Packed into a 850 ml wide-mouth bottle.
Thereafter, after sterilization by heating at 120 ° C. and saturated vapor pressure, the fungus was cultivated under the conditions of darkness, temperature of 25 ° C. and humidity of 55% over 2 months.
After culturing the fungus, a hole with a diameter of about 1cm is made in the center of the wide-mouthed jar (bacterial mushroom), fully absorbed, and then cultured for 4 days under conditions of 15 ° C, 95% humidity, and 20 lux illumination. The primordial primordium was formed, the illuminance was increased to 200 lux, and the culture was continued for about 2 weeks.
In addition, the case where only inorganic salt was used, the case where only calcium aluminosilicate glass was used, and the case where neither was used was made into the comparative example. The results are also shown in Table 1.

<Materials used>
Inorganic salt a: Anhydrous aluminum sulfate, reagent first grade, Blaine specific surface area 9,000cm ² / g
Inorganic salt: Ferrous sulfate, first grade reagent, Blaine specific surface area 9,000cm ² / g
Inorganic salt ： Aluminum chloride, first grade reagent, Blaine specific surface area 9,000cm ² / g
Inorganic salt: Aluminum fluoride, first grade reagent, Blaine specific surface area 9,000cm ² / g
Inorganic salt ： Aluminum hydrogen phosphate, first grade reagent, Blaine specific surface area 9,000 cm ² / g
Inorganic salt: Sodium sulfate, reagent grade 1, Brain specific surface area 9,000cm ² / g
Inorganic salt: Sodium bicarbonate, first grade reagent, Blaine specific surface area 9,000cm ² / g
CaO raw material: Calcium carbonate, manufactured by Kanto Chemical Co., reagent grade
Al ₂ O ₃ raw material: Aluminum oxide, manufactured by Kanto Chemical Co., Ltd., reagent first grade
SiO ₂ raw material: Silicon dioxide, manufactured by Kanto Chemical Co., Inc., reagent grade 1 calcium aluminosilicate glass: CaO 50.0%, Al ₂ O ₃ 20.0%, SiO ₂ 30.0%, vitrification rate 100%, Blaine specific surface area value 6,000cm ² / g
Hardwood sawdust: Sawdust of beech coniferous sawdust: Sawdust of over-grown rice cake: Commercial water: Pure water

<Measurement method>
Time to reach: Take 50 ml of 0.1 N hydrochloric acid in a beaker, add 1 g of mushroom cultivating additive, stir and measure the pH to the initial pH. 2 ml of 1N hydrochloric acid is added every 10 minutes from the start of stirring, and when it is continued until the initial pH is reached, the time until the pH reaches 3.0 after adding the additive for growing mushrooms is the maximum pH: after the arrival time , Maximum pH between pH 3.0
Control contrast: Yield, fruit body yield (g) / additive fruit body yield (g) x 100 (%)
Quality: Visual evaluation was made based on the following criteria. If the size of the fruiting body is uniform and the umbrella does not open, it is excellent, the size of the fruiting body is not aligned, or if the umbrella is slightly open, yes, the size of the fruiting body is not aligned If the umbrella is slightly open, it was not allowed.

  As shown in Table 1, the quality and yield of bamboo shoots are improved when the present inorganic salt is used in combination with calcium aluminosilicate glass and the maximum pH measured in the Fuchs method test is in the range of 3.5 to 4.5. I understand.

Experimental example 2
As shown in Table 2, the experiment was performed in the same manner as in Experimental Example 1 except that the arrival time was changed using an inorganic salt and calcium aluminosilicate glass. The results are also shown in Table 2.

  As shown in Table 2, it can be seen that when the arrival time is within 120 seconds, the quality and yield of the bamboo shoot are improved.

Experimental example 3
The experiment was performed in the same manner as in Experimental Example 1 except that an alkaline earth metal composite hydroxide was used instead of the calcium aluminosilicate glass. The results are also shown in Table 3.

<Materials used>
Compound hydroxide: MgO-Al ₂ O ₃ —SiO ₂ —H ₂ O compound, MgO 17.9%, Al ₂ O ₃ 26.4%, SiO ₂ 23.0%, H ₂ O 32.7%, BET specific surface area 53 m ² / g

  As shown in Table 3, the quality and yield of bamboo shoots when this inorganic salt is used in combination with an alkaline earth metal complex hydroxide and the maximum pH measured by the Fuchs test is in the range of 3.5 to 4.5. Can be seen to improve.

Experimental Example 4
Inorganic salt and calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite hydroxide, and hydrotalcite Was carried out in the same manner as in Experimental Example 1 except that these were used together in the ratio shown in Table 4. The results are also shown in Table 4.

<Materials used>
Oxide: Calcium oxide, first grade reagent, Blaine specific surface area value 5,000cm ² / g
Complex oxide: Dicalcium silicate, CaO 65%, SiO ₂ 35%, Blaine specific surface area value 6,000cm ² / g
Hydroxide: Calcium hydroxide, reagent first grade, Blaine specific surface area value 5,000cm ² / g
Hydrotalcite: Mg ₄ Al ₂ (OH) ₁₂ CO ₃ / 3H ₂ O, MgO 34.4%, Al ₂ O ₃ 21.7%, CO ₂ 9.4%, H ₂ O 34.5%, BET specific surface area 7.6m ² / g

As shown in Table 4, and the inorganic salt, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except for calcium aluminates), an alkaline earth metal hydroxide, an alkali One or two or more selected from the group consisting of complex hydroxides of earth metals and hydrotalcite , or the combination of these with calcium aluminosilicate glass should further improve the quality and yield of bamboo shoots. I understand.

Experimental Example 5
In proportions shown in Table 5, the present inorganic salt, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite water It carried out similarly to Experimental example 4 except having used together the oxide and the hydrotalcite. The results are shown in Table 5.

  As shown in Table 5, this inorganic salt, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite It can be seen that when two kinds selected from the group consisting of hydroxide and hydrotalcite are used in combination, the quality and yield of the bamboo shoots are further improved.

Experimental Example 6
In proportions shown in Table 6, the present inorganic salt, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite water It carried out similarly to Experimental example 4 except having used together the oxide and the hydrotalcite. The results are shown in Table 6.

  As shown in Table 6, the present inorganic salt, calcium aluminosilicate glass, alkaline earth metal oxide, alkaline earth metal composite oxide, alkaline earth metal hydroxide, alkaline earth metal composite It can be seen that when three or more kinds selected from the group consisting of hydroxide and hydrotalcite are used in combination, the quality and yield of bamboo shoots are further improved.

  Since the mushroom artificial culture medium of the present invention can be used to grow mushrooms of good shape and size in a high yield, it can be used in a wide variety of fields such as enoki mushrooms, octopus mushrooms, nameko mushrooms, bamboo shoots, maitake mushrooms, jellyfish mushrooms, shiitake mushrooms, and shiitake mushrooms. Can be used for cultivation of mushrooms.

Claims (7)

An inorganic salt aqueous solution is acidic, A alkaline earth metal oxides, composite oxides of alkaline earth metals (except for calcium aluminates), an alkaline earth metal hydroxide, an alkaline earth metal A mushroom characterized in that it contains one or more selected from the group consisting of a composite hydroxide and hydrotalcite, and has a maximum pH of 3.5 to 4.5 measured by the Fuchs method test. Additive for cultivation. Alkaline earth metal oxides, alkaline earth metal complex oxides (except calcium aluminates), alkaline earth metal hydroxides, alkaline earth metal complex hydroxides, and hydrotalcite The additive for cultivating mushrooms according to claim 1, further comprising calcium aluminosilicate glass in one or more selected from the group consisting of: The mushroom cultivation additive according to claim 1 or 2 , wherein the inorganic salt is an aluminum salt. The said aluminum salt is aluminum sulfate, The additive for cultivation of the mushroom of Claim 3 characterized by the above-mentioned. The reach for pH 3.0 measured by the Fuchs method test is within 120 seconds, and the additive for cultivating mushrooms according to any one of claims 1 to 4 . A mushroom artificial culture medium comprising the additive for cultivation of mushrooms according to any one of claims 1 to 5 . A method for artificial cultivation of mushrooms using the artificial culture medium for mushrooms according to claim 6 .