Are the "sea mushrooms" in Xiamen artificial?

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1, Introduction:

Sea mushroom (Pholiota nameko) is also called Pholiota nameko and Pearl mushroom. It belongs to Pleurotus, Cladosporium, Agaricus, Pleurotus and Cyclobalanopsis. It is nutritious and delicious. Pleurotus ostreatus is named after the mucus on the surface of the mushroom lid, which has an inhibitory effect on tumors. It has been widely popularized in three northeastern provinces and is a promising edible fungus.

2. Nutrition

Mushrooms are similar to common wood rot fungi, and their carbon and nitrogen nutrition comes from agricultural and sideline products rich in lignin, cellulose, hemicellulose and protein, such as sawdust, cottonseed hull, straw, wheat bran and rice bran. Pleurotus ostreatus can secrete a variety of intracellular and extracellular enzymes to decompose and utilize nutrients in the culture medium. In addition, mineral elements and vitamins are also indispensable in the metabolic process of Pleurotus ostreatus, but these substances are generally found in the above agricultural and sideline products and do not need to be added to the culture medium during artificial cultivation.

3. Temperature

Pleurotus ostreatus is a low-temperature edible fungus, and the fruiting temperature is generally between 5-20℃, but the upper limit temperature of fruiting body is obviously different among different strains. Accordingly, Pleurotus ostreatus can be divided into early-maturing, middle-maturing and late-maturing types. Suitable varieties should be selected according to local climatic conditions. Generally speaking, the upper limit temperature of early, middle and late maturing varieties is about 65438 08℃, 65438 05℃ and 65438 02℃ respectively, while the lower limit temperature is about 5-7℃. The optimum temperature for the growth of Pleurotus ostreatus mycelium is 20-25℃.

4. Moisture and humidity

Water is not only a component of the fungus, but also an indispensable condition for the metabolism and growth of Pleurotus ostreatus. Generally, the water content of culture medium should be 60%-65%, and the growth and development of fruiting bodies need 85%-95% air relative humidity.