JPS62224211A - Sawdust culture of 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 Application Field) The present invention relates to a method for year-round production of edible mushrooms by sawdust cultivation.

(Conventional technology) In order to produce edible mushrooms such as enoki mushrooms, oyster mushrooms, and nameko mushrooms all year round (year-round production), sawdust cultivation has traditionally been carried out using sawdust as nutrients and rice bran as a fungal bed.

This method involves mixing sawdust and rice bran, adding water to adjust the moisture content, putting the culture medium into a container such as a bottle or a heat-resistant plastic bag, sterilizing it, and then ingesting and culturing the inoculum after cooling.

(Problems to be Solved by the Invention) The conventional method described above has the disadvantage that water evaporates and the growth of bacteria is impaired.

(Means for solving the problem) The present inventors have investigated various water retention agents to suppress water evaporation, but carboxymethyl cellulose (hereinafter referred to as C
The present invention was completed based on the discovery that the salt (referred to as MC) exhibits outstanding effects.

That is, in the sawdust cultivation method for edible mushrooms, when sawdust and rice bran are mixed and water is added to prepare a culture medium, CMC salt is added as a water retention agent.

The salt of CMC used in the present invention preferably has a degree of etherification (DS) of 0.5 to 2.0, more preferably 0.6 to 1.
．． 5 and a 2% viscosity (measured at 20° C. with a B-type rotational viscometer, the same applies hereinafter) of 50 cps or more.

The method for cultivating edible mushrooms, such as enoki mushrooms, oyster mushrooms, nameko mushrooms, etc. according to the present invention, involves mixing sawdust and rice bran in 10 =
When mixing at a ratio of 1 to 20 and adding water to prepare a culture medium to 40 to 65z, add the CMC salt as a water retention agent to the culture medium at 0.05 to 5%, preferably 0.1 to 1%.
This method consists of adding within the range of .

When adding CMC salt to the culture medium, the method is to first dissolve it in water and add it as an aqueous solution when adding water to the culture medium, or
Alternatively, it may be sprinkled in powder form onto a sterilized culture medium. Either method may be used.

(Effects of the invention) According to the cultivation method of the present invention, the growth of edible mushrooms is not suppressed because the evaporation rate of water in the culture medium is slow, so the annual cultivation period is shorter than that of conventional methods, and the production volume is It is possible to increase the

(Example) Example.

Mix 10 parts of sawdust with 10 parts of rice bran, add water to adjust the water content to 65%, put this in a pressure cooker, and heat under a pressure of 1.0 to 1.2 Kg/ql 2. Steam sterilized.

Next, put this in a polypropylene bottle and sterilize DS on its surface.
0.75 (7) CMC Na salt (2% viscosity; 3.0
0.2 part of OOCPs) was sprayed, and the enoki mushroom inoculum was inoculated thereon, followed by cultivation in a room at 18°C.

Similarly, as a comparative example, an experiment was conducted in which no Na salt of CMC was used.

The results are shown in Table 1.

Table 1 As described above, it was recognized that the present invention is superior to the conventional method cited as a comparative example.

Claims (1)

[Claims] 1. A sawdust cultivation method for edible mushrooms, which is characterized by adding carboxymethyl cellulose salt as a water retention agent when preparing a culture medium by mixing sawdust and rice bran and adding water.