Xuzhou Guifeng Metal Technology Co., Ltd , https://www.guifengmetal.com
Refrigerator Preservation Bacteria 4 items
Edible fungi cultivation starts with the strain, and its quality plays a crucial role in determining both the yield and quality of the final product. Proper preservation of these strains is essential for maintaining their viability and ensuring successful mushroom growth, which directly impacts the income of farmers. One of the most common, simple, and cost-effective methods used by many households is storing the strains in a regular refrigerator. This method not only helps inhibit unwanted microbial growth but also slows down the aging process of the strains.
However, using a household refrigerator comes with some risks. These refrigerators often store a variety of foods such as fruits, vegetables, meats, and dairy products, which can harbor harmful microorganisms. Some of these pathogens may survive at low temperatures and potentially contaminate the strains. For example, certain cold-tolerant bacteria or even a few heat-resistant ones that have adapted to 4–6°C can thrive and cause infections. When combined with other contaminants like *Pseudomonas* species, this can lead to serious issues such as oyster mushroom rust, especially if the strains are kept for long periods.
To prevent contamination, it's important for farmers to adopt effective preservation techniques. One method is to use solid paraffin to seal the culture tubes. By melting wax and pouring it over the cotton plug, the tube is effectively sealed, protecting the strain from moisture and airborne contaminants. Another approach is to store the cultures in sealed plastic bags. If possible, vacuum sealing can further enhance the preservation effect by reducing oxygen levels, thus limiting microbial activity.
Regular cleaning and disinfection of the refrigerator is also vital. Farmers should clean the interior with mild detergent and water, then wipe it with a damp cloth to remove dirt and odors. A negative ion generator or UV lamp can be used for sterilization. However, it's important to avoid using chemicals like formaldehyde or sulfur, as they might damage the strains or leave harmful residues.
Additionally, placing a desiccant in the freezer compartment can help control humidity, which is a key factor in preventing microbial growth. Lower humidity reduces the chances of contamination, ensuring the strains remain healthy and viable for longer periods. With these precautions, farmers can significantly improve the success rate of their edible fungi cultivation while minimizing the risk of bacterial infections.