What are the raw materials of white button mushroom?

What are the raw materials of white button mushroom?

(1) Straw: Usually wheat straw, rice straw, corn straw and other waste straw resources of major crops, which provide carbon source during the growth of edible fungi and maintain the pile structure during fermentation.

Quality requirements of wheat straw: ① Bright color and less soil ash. ② Length of more than 20 cm, the longer the better. ③ Moisture content less than 10%, convenient for long-term storage.

(2) Livestock and poultry manure: Usually chicken manure, cow manure and other waste materials with high nitrogen content, which provide nitrogen source during the growth of edible fungi and provide sufficient protein nutrition for pile and mycelium growth.

Quality requirements of chicken manure:

① Dark yellow color, fresh, and not fermented for a long time.
② Moisture content less than 55%, in the form of loose sand, which is conducive to mixing evenly with gypsum and improving the uniformity of ingredients.
③ Ash content less than 20%, the lower the better, ash content has no effect on edible fungi cultivation. The nitrogen content is greater than 4%, the higher the better. The higher the nitrogen content, the more organic nitrogen and nutrients there are in the chicken manure. Usually broiler manure is more suitable.

(3) Raw gypsum: Calcium sulfate dihydrate provides inorganic salts and improves the air permeability of the pile making process, reduces the viscosity of the pile, and stabilizes the pH value of the pile during the fermentation process. Raw gypsum should be selected from natural gypsum mines. Although the amount of gypsum is small, it has a very large effect. Some gypsum on the market is often an industrial by-product. It has a high calcium sulfate content, but it contains some toxic substances, which have an inhibitory effect on microorganisms in the fermentation process and will have a significant impact on the fermentation process.

(4) Water: It is the basis of all life activities. The fermentation of Agaricus bisporus is mainly based on the sewage formed in the mushroom cultivation process after sufficient aeration.