Hot water pasteurization of oyster mushroom substrate. What temperature do you pasteurize substrate?

[@evertkervezee]

What amount of time would You advise for pasteurising woodshavings and sawdust?

[@OysterMushroom_expert-tech]

Both sawdust and shavings have low nutritional value. Therefore, they are used only as a base with the addition of nutritional supplements and only when sterilizing the substrate. Perhaps, if you make a small amount of substrate, they can be pasteurized. But if the sawdust is too small, it absorbs too much water and the mycelium cannot breathe there. You can slightly dry the sawdust in the oven after pasteurization if you make 2-3 tiny blocks. This is not suitable for large volumes. Shavings, on the contrary, absorb little water. Therefore, I cannot give recommendations on pasteurization time. No less than 3 hours, and no more than 8 and a temperature of 68-72 - this is the range for any type of raw material. You will have to set the time empirically in this range. Since even different types of shavings will absorb water differently

[@OysterMushroom_expert-tech]

and how many kilograms of substrate did you plan to make?

[@evertkervezee]

@@OysterMushroom_expert-tech i'll make 2kg bags with a Total of 4 per batch to pasteurize in my pressure cooker. I know te pressure cooker is for steam sterilizing, but that is te largest pot that i have.

[@OysterMushroom_expert-tech]

will you make a substrate only from sawdust? without supplements?

[@evertkervezee]

@@OysterMushroom_expert-tech te recipe that i have for now is 1/4 sawdust and 3/4 woodshavings. Later on when i have more experience, i might add wheatbran for extra nitrogen.

[@OysterMushroom_expert-tech]

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