JPS61187727A - Culture medium for edible mushroom - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial field of application) The present invention relates to a medium for cultivating edible mushrooms,
In particular, it concerns combining media.

(Prior Art) Cultivation of edible mushrooms includes log cultivation and fungal bed cultivation using sawdust, rice straw, etc. as a medium. While log cultivation has advantages such as superior quality and low equipment costs, it also has disadvantages such as long cultivation periods, the need for large lying areas, heavy labor, and dependence on the weather. Furthermore, due to the rise in the price of Hodagi, fungal bed cultivation has become popular in recent years. Among fungal bed cultivation methods, there are many methods in which sawdust is used as a culture medium to grow in bottles or bags, and the fruiting bodies are generated. This method requires light work and is easy to mechanize because the fungal beds are smaller than logs, and high yields can be achieved in a small area. Furthermore, the culture period tends to be shortened due to improvements in seed bacteria.

(Problems to be solved by the invention) In fungal bed cultivation, the quality of fruiting bodies such as shape, color, taste, etc. has deteriorated due to the miniaturization of the medium and the shortening of the culture period. The ratio of harvest volume has also been decreasing. This is because the nutrients in the sawdust are not fully utilized by the mushroom fungi as the medium is mixed with vegetative bodies such as rice bran, resulting in the development of fruiting bodies. Another reason is that decomposition does not progress sufficiently because it is difficult to release heat and carbon dioxide gas from the inside of the bacterial bed due to decomposition. However, if the size of the fungal bed is large enough to easily release the heat and carbon dioxide inside the fungal bed, the amount of culture medium will be reduced, the absolute amount of nutrients will be low, the amount of fruiting bodies produced will be reduced, and the quality will be poor. On the other hand, if a large fungal bed is used, the heat and carbon dioxide gas inside the fungal bed will not be released, resulting in worsening conditions and the culture period will become longer, resulting in the loss of the appropriate time for the development of fruiting bodies.

(Means for solving the problem) In order to generate high-quality fruiting bodies, the present invention passes the culture medium through a hollow tube, merges at least two or more fruiting bodies, and continues culturing, so that the center becomes hollow. The medium should be large enough to This is done immediately after the bacteria spreads throughout the culture medium in a bag or bottle made using the conventional method.
Take it out of the bag or bottle, make a hole in the center, and make at least 2 holes.
The method involves passing two or more cells through a hollow tube to combine them, and continuing to culture them in that form. At this time, to prevent the culture medium from drying out, warm it in the air or cover it with a film or the like with low water permeability. Both ends of the hollow tube shall not be blocked. By passing a hollow tube through the center of the bacterial bed, a temperature difference is created inside the bacterial bed, and heat and carbon dioxide gas inside the bacterial bed can be released together with moisture and air convection within the bacterial bed. As a result, the environment inside the fungal bed can be maintained so as not to exceed the activity range of the mushroom fungi. As the culture continues, the combined medium will become one large medium, but since the medium is combined immediately after the mycelia have spread throughout the medium, the culture period will not be prolonged.

Examples will be shown below, but the present invention is not limited thereto.

(Example) Example 1. Using Shiitake mushrooms, which are edible mushrooms, we measured changes in the yield of fruiting bodies as the weight of the medium increased. For 600 g to 1500 g, two to five mediums each having a diameter of 100 mm, a height of 60 mm, and a weight of 300 g were combined. 2000g~5000g
Up to: diameter 150mm, height 100mm, weight 100mm
Two to five 0g media were combined. 300 g of the medium was cultured for 15 days after inoculation of the inoculum, and 1000 g of the medium was cultured for 25 days after the inoculation of the inoculum, and both were combined immediately after the hyphae had spread. The culture temperature is 23°C. A stainless steel pipe with a diameter of 20 mm was passed through the center of each culture medium. (Figure 1, Figure 2
) After coalescence, the cells were placed in a polypropylene bag and continued to be cultured to prevent water evaporation. After coalescence, culture was continued at 23°C for 60 days, and fruiting bodies were then developed at 17°C. Table 1 shows the yield and yield rate for each medium weight. There were 30 culture media for each, and the average yield is shown.

As mentioned above, the yield rate increased as the medium weight increased. Furthermore, as the weight of the medium increased, the quality of the fruiting bodies also increased.

Example 2. The same test as in Example 1 was conducted on the edible mushroom Oyster mushroom. The culture period after coalescence was 7 days, and the other conditions were the same as in Example 1. Table 2 shows the yield and yield rate for each medium weight. There were 30 culture media for each, and the average yield is shown.

As mentioned above, the same results as in Example 1 were obtained.

(Effects of the Invention) As described above, according to the present invention, since hyphae are passed through a hollow tube and combined and combined immediately after they spread in a medium, a large-sized medium can be formed without difficulty, and a large number of high-quality fruiting bodies can be generated. was completed. Further, according to the present invention, in actual cultivation, the storage efficiency of the culture chamber and the generation chamber is improved, and it becomes possible to increase the yield per unit area. The present invention can be carried out regardless of the type of mushroom as long as it can be cultivated artificially.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of the culture medium used in the examples of the present invention. FIG. 2 is a sectional view thereof. Both Figures 1 and 2,
It is a figure when three culture media are combined. 1. ...Hollow tube 2. ...Medium 3. …Saucer

Claims (1)

[Scope of Claims] A medium for cultivating edible mushrooms, characterized in that a culture medium in which at least two or more bacteria are spread is passed through a hollow tube and combined.