The invention discloses a multi-stage
recovery treatment method and device for waste shiitake
mushroom sticks. The method comprises the following steps: sterilizing, cleaning,
drying and crushing thewaste shiitake
mushroom sticks; performing
fermentation and
centrifugation to obtain a primary residual material and a concentrated solution; extracting the primary residual material, and then performing
filtration through an
ultrafiltration membrane to obtain a treatment solution; carrying out
alcohol precipitation on the concentrated solution and the treatment solution, centrifuging to obtain aprecipitate, and carrying out
spray drying to obtain
lentinan. The device comprises sterilization equipment, cleaning /
drying equipment,
fermentation equipment, centrifugal equipment, extraction equipment, a reaction kettle,
ultrafiltration equipment and
spray drying equipment. The waste shiitake
mushroom sticks are subjected to
polysaccharide extraction in a mode combining
alcohol extraction afterfermentation, the problem that the shiitake mushroom sticks are complex in component and difficult to extract is effectively solved, and the high and stable extraction rate can be effectively guaranteed.