How to ferment high-quality culture materials for oyster mushroom cultivation?

How to ferment high-quality culture materials for oyster mushroom cultivation?

To ferment high-quality culture materials for oyster mushroom cultivation, proper fermentation and pile turning are essential for creating optimal growing conditions for the mycelium. The fermentation process starts with building a pile, which gradually heats up due to the metabolism of aerobic fungi. Once the temperature reaches 65°C, it should be maintained for 24 hours during high-temperature seasons (48 hours in low-temperature seasons) before the first turning. Turning the pile ensures uniform fermentation by mixing the outer layer with the inner and bottom layers, promoting aeration and moisture retention.

During the turning process, it's important to add water if needed to maintain moisture content and incorporate any additional ingredients. Typically, the pile should be turned every 1 to 2 days. After 3 to 4 turns, the material should have a fermented aroma, a slightly brown color, and a loose, non-sticky texture. At this point, the fermentation is complete, usually after 6 to 8 days, although the process can take longer in cooler weather.

Once the fermentation is successful, the material should be subjected to high-temperature sterilization to eliminate any remaining harmful microorganisms. Research has shown that a shorter high-temperature sterilization period can save fuel and enhance biological efficiency, making the process both cost-effective and time-efficient for annual oyster mushroom cultivation.