Solid-state fermentation installation

Abstract

This invention relates to a solid-state fermentation apparatus suitable for mass fermentation of a variety of microbes. The solid-state fermentation apparatus comprises a main frame, in which is set one or more fermentation units. Each fermentation unit is composed of air-permeable boards and fermentation bags in between. The solid-state fermentation apparatus has simple structure and is easy to make. Fermentation in the fermentation units can solve the problems of ununiform temperature distribution, easy infection of alien bacteria, and poor mass and heat transfer performance faced by fermentation in large-volume solid fermentation container.

Description

Technical field [0001] The invention relates to a solid-state fermentation device, in particular to a solid-state fermentation device suitable for large-scale fermentation of various microorganisms. Background technique [0002] The so-called solid-state fermentation is a process in which microorganisms such as fungi, yeasts, bacteria and actinomycetes are grown on a solid substrate under certain temperature, humidity and air conditions. Compared with liquid fermentation, solid fermentation is widely used in food, enzyme products, medicine, biological pesticides, biological fertilizers and other fields due to the advantages of less equipment investment, low management requirements, simple process flow, wide source of raw materials, and low energy consumption. However, solid-state fermentation has problems such as difficulty in heat and mass transfer, multiple manual operations, high labor intensity, susceptibility to miscellaneous bacteria, and low space utilization in production...

AI Technical Summary

Problems solved by technology

The air-solid fluidized bed bioreactor reacts by maintaining the solid particles in a suspended state through the upward movement of the fluid. In the reactor, the solid particles can fully contact with the gas, and it is also easy to control the temperature and humidity and improve the fermentation efficiency, but the equipment is expensive. , high energy consumption, low loading rate, and large-scale fermentation cannot be realized; the packed bed bioreactor is a static reactor, and a temperature gradient is generated from the bottom to the top of the bed, so the loading rate is affected by the thickness of the bed. Ventilation is used to diffuse the heat generated by microorganisms, so that the materials are easy to dry and affect the growth of microorganisms; drum bioreactors and stirred reactors dissipate heat through the shell, and the heat transfer efficiency decreases during large-scale production. At the same time, during the rotation or stirring process, shear Shear force will destroy the mycelium structure of growing fungi, which is not suitable for the fermentation of filamentous fungi, which greatly limits its application range; the solid-state fermentation device based on multi-layer shallow trays can adjust the fermentation material on the basis of reducing the production site. temperature, humidity, and gas, but there are problems such as high equipment requirements, low loading rate (generally 20% to 40%), expensive equipment, and high energy consumption, which make it difficult for this fermentation equipment to be widely used.

[0004] Based on the above situation, at present, the traditional open shallow plate, large pool and thin-layer fermentation are mainly used in China, and the fermentation is controlled by adjusting the environment of the fermentation room. Although it can be used for large-scale production, this type of reactor has a large space and labor force. Intensive, difficult temperature and humidity control and open production are susceptible to bacterial infection, unstable product quality and other shortcomings

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