JPH0465645B2 - - Google Patents

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to a cultivation medium for Bunashimeji, which is generally sold under the trade name of Honshimeji. <Conventional technology> Currently, the only cultivation medium used for Bunashimeji mushrooms is a combination of sawdust from broad-leaved trees and coniferous trees, and it has been believed that any other medium cannot produce good mushroom cultivation. A method using sawdust from hardwoods and coniferous trees is disclosed in Japanese Patent Publication No. 50-26448. The disadvantage of this conventional method is that the cultivation period is extremely long, around 120 days. Compared to oyster mushrooms, which grow in about 45 days, it actually takes 2.5 times longer to grow. For this reason, the cultivation cost is high and the commercial price is also high. In order to cultivate Bunashimeji mushrooms economically and efficiently, it is important to shorten this cultivation period. Furthermore, conventional culture ponds are discarded after cultivation, but it would be even better if this could be used effectively. <Problems to be Solved by the Invention> The present invention has been made in view of the above situation, and is a method of cultivating Bunashimeji that can greatly shorten the cultivation period, increase the yield, and use the medium after cultivation as feed for livestock. The aim is to provide a new culture medium for <Means for Solving the Problems> As a result of intensive research regarding the above problems, the inventors obtained the following findings. That is, 1. With a medium containing rice husk and corn cob as main materials, the cultivation period can be shortened to around 65 to 70 days, and the yield can also be increased. 2. Culture medium lees can be used as feed for livestock, and the amount of growth in animals in this case should be about twice that of normal feed. 3. The flavor of the mushrooms will improve. 4. The appearance of the mushroom is almost the same as that of a natural mushroom. 5. It has been found that the most preferable blending ratio of rice husk and corncob is approximately 1:(0.5 to 5) by weight. The present invention was made based on the above findings, and is a medium for cultivating Bunashimeji mushrooms, which contains a mixture of rice husk and corncob as an essential ingredient. Since the desired effects of the present invention cannot be obtained with rice husk or corn cob alone, it is essential to combine both rice husk and corn cob. Most preferably, the ratio of corn cob to rice husk is approximately 1:(0.5 to 5) by weight. In the culture medium of the present invention, in addition to the main materials, rice hulls and corncobs, other materials can be appropriately mixed. Examples of materials that can be mixed include nutritional materials such as food processing residues such as okara, konuka, alcohol lees, and squeezed fruit lees, and agricultural wastes such as buckwheat hulls, wheat skin, and bagasse. The transformation of culture medium lees into feed with high breeding efficiency is due to the following:
It is speculated that this is because the mushroom cultivation area and the materials that make up the culture medium are digested and converted into materials with high absorption efficiency. <Example> Example 1 Crushed rice hulls 100 parts Corn cob 50 parts Okara 200 parts Moisture 62% The above materials were mixed and stirred, placed in an 800 c.c. polyethylene bottle, and sterilized at 100°C for about 10 hours. It was used as a culture medium. Next, this mixed medium was inoculated with the fungus Bunashimeji and cultured for 30 days in a culture room at 20°C, followed by bacterial scraping, and then cultivated in a temperature environment of 10 to 25°C for 40 days. In this way, I was able to harvest 130g of high-quality Bunashimeji mushrooms. When the harvested culture medium lees was fed to sheep as feed, the amount increased was approximately twice that of the conventional method. The meat quality was very good and it was delicious. It has been found that culture medium lees is also extremely excellent as feed. Example 2 Rice husk 100 parts Corn cob 50 parts Cornucopia 20 parts Moisture 62% Cultivated under the same conditions as Example 1, 115 g of flat fruit
The harvest has been completed. The period from inoculum to harvest was 75 days. Example 3 Crushed rice hulls 100 parts Corn cob 50 parts Okara 200 parts Moisture 62% The above materials were used and the same procedure as in Example 1 was carried out except that 78 days were spent from inoculation to harvest.
I harvested 150g. Experimental example 1 Comparative cultivation culture using various culture media: 60 g of rice bran and 40 g of okara were mixed as nutrients in each of the culture media listed in Table 1 (if sawdust was used, rice bran and okara were added in this proportion). (This was used as the standard because it showed the best results). Cultivation and number of cultivation days: Following customary practices, 90 days were spent culturing the bacteria before harvesting, and 115 days were spent cultivating the following until harvesting. Containers: 100 plastic bottles with a capacity of 800 c.c. for each district
They were cultured and cultivated using one book at a time. Other conditions were the same as in Example 1. The results are shown in Table 1.

[Table] As is clear from Table 1, plots using corn/cob or rice husk alone, or plots using sawdust, have better yields and are superior in terms of quality and flavor. ing. Experimental Example 2 Comparative bacteria cultured by shortening the number of days The number of cultivation days until scraping was shortened from the conventional 90 days to 50 days, and the number of subsequent cultivation days was shortened from the same 115 days to 75 days, and the other conditions were the same as Experimental Example 1. were cultured and cultivated, and the results shown in Table 2 were obtained.

[Table] As shown in Table 2, when the number of days for culture and cultivation is shortened, the yield is extremely poor in the symmetric plot and C plot, which use a culture medium mainly made of sawdust or rice hulls, making it difficult to put it to practical use. Area B, which mainly consists of corn and cob, has a bitter taste and is of poor quality, making it unsuitable for commercial use. In Area A of the present invention, the yield was lower than in conventional practice due to the shortening of the number of days, but it can be put into practical use. <Effects of the Invention> According to the present invention, not only can the cultivation period of Bunashimeji be greatly shortened, but also the yield can be increased.
The culture medium lees can be used as livestock feed, and the culture medium itself of the present invention can be provided at low cost.

Claims (1)

[Scope of Claims] 1. A medium for cultivating Bunashimeji mushrooms, which contains a mixture of rice husk and corncob as an essential ingredient. 2. Claim 1, wherein the mixing ratio (weight) of rice husk and corncob is 1:(0.5 to 5).
The medium described in section.