Identification technique of Auricularia auricula strain

1. Hypha is white, like fine wool, short and neat, dense, strong and powerful, extending side by side to the bottom of the bottle, growing evenly, consistent from top to bottom, dug out into blocks, not loose. 2. After the mycelium grows full of bottles, brown water droplets are generally secreted on the surface of the mycelium. Later, pale yellow transparent gelatin ear buds appeared around the bottle wall and on the surface. 3. The strain column is closely attached to the bottle wall, and the bottle wall with a small amount of white water droplets is fresh strain. If there is light yellow water at the bottom of the bottle, the bacterial column shrinks from the wall, which is an aging strain and cannot be used. 4, normal strains have the unique aroma of black fungus, if there is odor and mildew, or there is plaque and spherical bacteria, is bacterial pollution, if there are other red, green, yellow, black and other colors, indicating that it has been contaminated by miscellaneous bacteria, can not be used. 5. If there is light black colloid (ear base) between the culture medium and the bottle wall, it indicates that it is a strain with early maturity or excessive expansion times. After cultivation, the ear is small, the quantity is large, it is not easy to grow up, the quality is poor, and the yield is low. It should be eliminated. 6, if the bottle can see wood particles and hyphae are few, indicating that the culture time is too short, should continue to culture. If there is no significant change after a period of culture, it indicates that the medium is undernourished and should be supplemented. If the strain grows to about half or a corner no longer continues to grow, it may be too dry or too wet. If hyphae grow orderly, dense, suddenly appear sparse, and there is a clear boundary, indicating that the upper material is moderate, the lower part is too dense.