Control method of Ganoderma lucidum yeast

Ganoderma lucidum yeast is a kind of ascomycetes without filamentous mycelium structure, which is widely distributed in nature. Ganoderma lucidum, Tremella fuciformis and other edible fungi can pollute the culture medium and culture materials in the production and cultivation process, mainly polluting the culture materials, leading to deterioration of the culture materials and inhibiting the growth of hyphae. Let's take a look at the control methods of Ganoderma lucidum yeast.

Harmful symptoms of Ganoderma lucidum yeast

The infection of yeast usually starts from the middle of Tremella culture material, which leads to the fermentation deterioration of the culture material and the smell of alcohol acid, which affects the growth and development of mycelium, and then affects its yield and quality.

Characteristics of Ganoderma lucidum yeast

Saccharomyces cerevisiae lives on organic matter, and the spores spread with airflow. Because of incomplete disinfection and sterilization in the process of strain production or raw meal cultivation, the bacteria is easy to occur because there are many and tight materials in the bottle bag, and the discharge between the bottle bag is tight. High temperature and humidity are beneficial to the germination and reproduction of yeast. too thick bed material and high water content of culture material will lead to fermentation deterioration of culture material.

Control methods of Ganoderma lucidum yeast

The main results are as follows: 1. In the production of bacteria, an appropriate amount of strain bags should be used to avoid too tight the culture materials. During sterilization, keep a proper distance between the bottles and bags, which is conducive to neat evacuation. The original species and cultivated species should not be sterilized by intermittent sterilization under atmospheric pressure. Sterilization at atmospheric pressure should be kept at least 100 ℃ for 8 hours.

2. To carry out aseptic operation during vaccination, the staff should strictly abide by the vaccination procedures.

3. In the process of cultivation, 25% carbendazim or 0.1% methyl topiramate was mixed with 0.2% of dry material weight. Keep the appropriate water content and temperature of the culture material. Spray with clean water to reduce the occurrence of germs.

3. In the cultivation and production, it is found that the temperature of the culture material is too high and gives off a sour taste, and the culture material is irrigated with lime water (pH13~14) in time to control the reproduction of yeast.