Effectively reduce the contamination rate of edible fungi

? The bottled fermentation material is one centimeter high.

At the top of the culture medium, about 4cm from the mouth of the bottle, load the fermentation material of 1-2cm, and then sterilize. Because the fermentation material itself is sterile, after entering the strain, the hyphae soon cover the upper part of the bottle, and the hyphae are eaten at the same time. The advantage of this method is that the mixed bacteria are not easy to infect the culture medium, and the bacteria age of the strains is the same. The pollution rate can be reduced to less than 3%.

? Wheat grain germination method

Let the wheat germinate and then bottle it for sterilization. The storage substances of wheat grains are mainly starch, fat and protein. when the seeds are imbibed and the cell physiological activity is reactivated, the activities of various enzymes are enhanced, and these substances are decomposed into simple maltose, sucrose, amino acids and other substances during germination. Easy to be used by mycelium, mycelium growth rate is fast. The specific method is: let the wheat seed germinate at one time, the length of the bud is 1-2 times the length of the wheat grain, then fully dry and store, wait until the day before the strain, soak the wheat grain for 12 hours, directly bottle sterilization. The advantage of this method is that the process of cooking wheat grains is omitted, the manpower and financial resources are saved, and the bacteria are produced quickly, the miscellaneous bacteria are few, and the pollution rate is only 2% and 3%.

? Use liquid bacteria

The liquid strain overcomes the shortcomings of the solid strain, and the liquid strain can be cultivated directly as a cultivated species. The use of liquid bacteria not only has a low probability of infection by miscellaneous bacteria, and the pollution rate can be reduced to about 2%, but also from a long-term point of view, because its production does not use plastic bags, there is no pollution to the environment, which reduces the production cost of bacteria. Inoculation of the lower part of the original seed bottle

? Vaccination begins at the bottom of the original seed bottle

We know that the bacteria in the lower part of the original bottle have short bacterial age, strong vitality, few miscellaneous bacteria, fast feeding of mycelium after inoculation, and low pollution rate, so the pollution rate can be reduced to about 3%. In order to further reduce the pollution rate of cultivated species, it is suggested to discard the original species of 1stroke 5 in the upper part of the bottle mouth of the normal original species, so as to prevent the cultivated species from being contaminated by miscellaneous bacteria invisible to the naked eye.

The time of receiving bacteria in high temperature season is advanced or delayed.

Receive bacteria during cooler periods from July to August, such as in the morning or evening. Of course, if the effect of inoculation is better in the room with air conditioners, the pollution rate can be reduced to less than 5%.