JPH09327233A - Cultivation of mushroom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a process for the cultivation of mushroom with an artificial medium by improving the contact of the seed mycelia with the whole layer of the medium, thereby promoting the proliferation of the mycelia in the medium and enabling the harvest of mushroom in a shortened cultivation period. SOLUTION: A powdery medium is filled in a mushroom cultivation bag, the bag is compressed, one or more vertical holes are opened in the medium, the medium is sterilized and then inoculated with seed mycelia and the mycelia are proliferated to obtain a cultured mushroom mycelium block. The cultivation bag is opened and the block is directly brought into contact with air to effect the growth of mushrooms. In the above process, powdery seed mycelia are dispersed in water, a thickener is added to the dispersion and the obtained seed mycelium slurry having increased viscosity is poured into the vertical holes.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for cultivating mushrooms, and is particularly suitable for cultivating shiitake mushrooms.

[0002]

2. Description of the Related Art For the cultivation of shiitake mushrooms, in addition to the traditional method of using persimmon trees, a culture bag made of plastic film is filled with a medium containing sawdust, rice bran, bran etc. A method of growing a mushroom in the air by removing a block-shaped mushroom culture obtained by breeding mushroom hyphae from the culture bag. Culture bags made of plastic film have been widely used in recent years because they are lightweight and easy to handle. As a typical example
No. 7-22518 proposes a culture bag in which a part of the plastic film bag is a porous plastic film having a hole diameter of 0.02 to 0.4 μm. Pore diameter 0.02-0.4
The microporous plastic film of μ prevents the invasion of various bacteria without obstructing the flow of air necessary for the reproduction of the mushroom hyphae. Such culture bags are used not only for shiitake mushrooms but also for maitake mushrooms.

When the hyphae are sufficiently propagated in the medium, the medium is bound with the hyphae to form a block-shaped fungus culture, and the peripheral surface of the culture is browned to prevent invasion of various bacteria into the culture. Therefore, remove this from the culture bag and grow the shiitake mushroom in the air. If taken out from the culture bag, shiitake mushrooms will grow not only on the top of the culture of fungi, but also on the sides of the fungus culture.

Since the growth of mushrooms does not start until the hyphae have proliferated sufficiently in the medium, the shorter the period until the completion of the hyphae growth, the higher the productivity. In order to accelerate the growth of mycelia, it is effective from the beginning to make close contact between the inoculum and the medium. However, it takes time for mycelia to propagate to the deep part of the medium just by spraying the inoculum on the surface of the medium. Therefore, a method is known in which one or more vertical holes are provided in the medium and the inoculum is inoculated into the vertical holes so that the inoculum directly contacts the deep part of the medium. Japanese Patent Publication No. 8-11018 proposes a medium block forming device for mushroom cultivation in which a container is filled with a powdery medium, which is compressed and vertical holes are formed in the medium. However, commercially available fungi are, for example, Japanese Patent Publication No. 8-7069.
As described in No. 8, it is filled in a wide-mouthed bottle and is connected with hyphae in a block shape, so you can use it by scraping it with a scraping stick, but the seed bacteria that are scraped out will be in a large and small uneven mass. Most of them are deposited on the upper surface of the medium and do not completely fill the vertical holes. Patent No. 250
In No. 1130, inoculate the inoculum onto the medium, then insert the insertion rod into the medium through the inoculum from the opening side of the container to partially insert the inoculum into the medium, and then cultivate the mushroom. Although a method has been proposed, the amount of inoculum that adheres to the insertion rod and is inserted into the medium is small, and it is troublesome, and thus it is not suitable for mass production.

[0005]

DISCLOSURE OF THE INVENTION The present invention provides good contact between the inoculum and all layers of the medium in the cultivation of mushrooms using an artificial medium, promotes the growth of mycelia in the medium, and shortens the period. It is an object of the present invention to provide a method for cultivating mushrooms that can harvest mushrooms with.

[0006]

[Means for Solving the Problems] A method for cultivating a mushroom according to the present invention is as follows: a bag of mushroom culture is filled with a powdery medium, compressed, and at least one vertical hole is formed in the medium, and the medium is sterilized. ,
After inoculating the inoculum and propagating the fungus hyphae in the medium to form a block-shaped fungus culture, the culture bag is opened, and the block-shaped fungus culture is directly contacted with air to grow mushrooms. It is characterized in that the inoculum in the form of slurry is injected into the vertical hole while dispersing the inoculum in the form of water and adding a thickener to increase the viscosity.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A fungus culture bag is filled with a powdery medium, compressed, and at least one vertical hole is provided in the medium. After the medium is sterilized, inoculum is inoculated and the fungal hyphae are propagated in the medium. After making a block-shaped fungus culture, the culture bag is opened and the block-shaped fungus culture is directly contacted with air to grow mushrooms, which is the same as a known method, but in the present invention, Is a commercially available bottle-shaped block seed inoculum and finely powdered inoculum is dispersed in water and a slurry with a thickener added to increase the viscosity, which is then added to the vertical holes in the medium. inject.

[0008] A slurry obtained by finely pulverizing inoculum and simply dispersing it in water can be easily injected into the vertical hole, but when injected into the vertical hole, only water is absorbed by the medium and the inoculum accumulates at the bottom of the vertical hole. It is not possible to maintain the condition that the inoculum is in contact with the entire peripheral wall of the vertical hole. However, if the powdered inoculum is dispersed in water and a viscosity-increasing agent is added to form a slurry in which the viscosity is increased and the slurry is injected into the vertical hole, the filled state is maintained over the entire length of the vertical hole. In the case of shiitake mushrooms, the time required for the hyphae to sufficiently propagate in the artificial medium was about 120 days, but according to the present invention, it can be shortened to about 80 days.

Known thickeners can be used, but since they are related to the production of foods, it is preferable to use a natural product-based thickener as much as possible. For example, carboxymethyl cellulose (CMC), starch paste, starch syrup, molasses, etc. are preferably used. That the water does not separate,
From the viewpoint of both the ease of injection and the viscosity, it is preferable that the viscosity be about mayonnaise.

It is preferable that the number of vertical holes provided in the medium is at least one, and a plurality, for example, four or six, are provided according to the sectional shape and size of the medium.

[0011]

INDUSTRIAL APPLICABILITY In the cultivation of mushrooms using an artificial medium, it is possible to improve the contact between the inoculum and all layers of the medium, promote the growth of mycelia in the medium, and harvest the mushrooms in a shorter period of time.

Claims (2)

[Claims] 1. A powdery medium is filled in a bag of mushroom culture,
After compressing and making one or more vertical holes in the medium, after sterilizing the medium, inoculate the inoculum and propagate the fungal hyphae in the medium to form a block-shaped fungus culture, then open the culture bag and open the block-shaped mushroom. In the method of growing mushrooms by directly contacting the bacterial culture with air, the powdered seed bacteria are dispersed in water and a slurry-like seed bacteria whose viscosity is increased by adding a thickener is injected into the vertical holes. How to grow mushrooms. 2. The method of cultivating a mushroom according to claim 1, wherein any one of carboxymethyl cellulose, starch paste, starch syrup, and molasses is used as a thickener.