JPH043922B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a culture medium for mushroom cultivation. [Conventional technology] Traditionally, edible mushrooms have been cultivated using logs using logs, and the harvest has often been influenced by climate conditions. However, in recent years, artificial fungus beds have been developed in which enokitake, oyster mushrooms, nameko mushrooms, etc. are grown in boxes or bottles using a culture medium made by mixing sawdust, rice husk, etc. with rice bran at a ratio of 0.1 to 1 part by dry weight to 1 part by dry weight. Cultivation methods have been established, and it has become possible to stably harvest edible mushrooms throughout the year without being affected by the four seasons. Nowadays, mushroom cultivation, which was traditionally done as domestic labor on farms, is transitioning to an industrial production format that involves continuous mass cultivation. This artificial cultivation of mushrooms on an industrial production scale requires the use of rice bran as a mixed material for the culture medium. However, due to a decrease in rice consumption or a reduction in acreage due to agricultural policy, rice production is decreasing year by year, and as a result, the supply of rice bran is naturally decreasing, making it difficult to obtain it. Furthermore, the fact that rice bran must be as fresh as possible is a drawback in the artificial cultivation of mushrooms using rice bran. For this reason, various studies are being conducted on substitutes for rice bran.
81252), corn bran (Special Publication No. 54-7697), etc. have been proposed. However, certain of them are limited to specific mushrooms such as oyster mushrooms or shiitake mushrooms, and are completely powerless to cultivate enokitake mushrooms, which have the highest production volume. By the way, the current annual production of oyster mushrooms is 15,000 tons, and the annual production of enoki mushrooms is 50,000 tons, and the amount of rice bran used is about the same. On the other hand, even in the conventional culture medium using rice bran together with sawdust and/or rice hulls, the yield of mushrooms is not fully satisfactory;
Currently, the yield of corn flour, bran, soybean flour, etc. is lower than that of rice bran. [Contents of the Invention] The present inventors have conducted various studies on effective mushroom cultivation materials that can replace the conventional ones. As a result, the present inventors discovered that milo powder is extremely effective as a material for a culture medium, and were able to complete the present invention. That is, in the present invention, by further mixing at least one of sawdust and rice hull with Milo powder and rice bran to form a culture medium, it is possible to cultivate not only oyster mushrooms, nameko mushrooms, and shimeji mushrooms, but also conventional culture medium materials other than rice bran. This made it possible to artificially cultivate enoki mushrooms using fungal beds, which was thought to be impossible. Moreover, it has been unexpectedly discovered that by using such a culture medium, it is possible to increase the yield of fruiting bodies, shorten the cultivation period, and improve the quality. The Milo powder used in the present invention includes those obtained by pulverizing Milo grains using various types of pulverizers, or those obtained by fractionating the pulverized product and adjusting the protein, fat, etc. content to a desired level. In particular, milo flour with a high protein and fat content is preferred as a mushroom culture medium. Note that the milo powder suitable for use in the present invention usually has a particle size of about 150 mesh to 10 mesh. Such Milo powder has the components shown in the following table. Ingredient ratio Moisture 8-17% Crude protein 6-17〃 Crude fat 3-15〃 Crude fiber 2-16〃 Crude ash 1.5-5.5〃 Carbohydrate 5-75〃 As mentioned above, the artificial mushroom of the present invention The culture medium for cultivation consists of a mixture of milo powder and bran, as well as at least one of sawdust and rice husk. The term "bran" as used herein refers to by-products such as rice bran and wheat produced when grains are refined and/or milled. Examples of the present invention are listed below. Note that the present invention is not limited to the following examples. Example 1 Add 280g of sawdust to Milo powder (14% crude protein, 7% crude fat)
%, ash content 3%) 45g, 〓45g and 120ml of water were added and mixed, and the moisture content was adjusted to 65%.
Fill it into an 800c.c. plastic bottle, seal it tightly, and sterilize it under high pressure at 120℃ for 30 minutes. Thereafter, the oyster mushroom fungus is inoculated and cultured in a culture room at a room temperature of 15-20°C and humidity of 60-70%. Once the mycelia have propagated throughout the bottle, scrape the bacteria and then leave it at room temperature for 10 minutes.
Cultivate in a cultivation room at ~12°C and 80-90% humidity.
Once the mushrooms have reached an appropriate size, they are picked off from the roots, and the fungus is scraped again to encourage a second outbreak. For the second generation work, repeat the same work as the first time. As a control example, 280g of sawdust, 90g of rice bran and 120g of water
Oyster mushrooms were cultured in the same manner as described above using the culture medium mixed with ml. The results of determining the yield, growth period, and quality of the fruiting bodies of oyster mushrooms in the Examples and Control Examples are shown in Table 1 below.

【table】

[Table] Volume feeling
Yes Missing
Comprehensive evaluation of fruit body quality
Excellent

Claims (1)

[Claims] 1. A culture medium for mushroom cultivation, comprising a mixture of milo powder and bran mixed with at least one of rice husk and sawdust.