Characteristics of solid state fermentation device

Solid fermentation device: Solid fermentation is to cultivate microorganisms in a shallow dish with or without holes at the bottom by using solid culture medium (made of bovine drum skin and ridge bran) under a certain temperature and humidity environment to produce microbial cells or their metabolites. The device used for this fermentation can be fixed cabinet type, belt type or rotary disk type, and the latter two can be continuously fed and discharged.

Advantages:

1. Low water activity, high water insolubility of substrate, easy growth of microorganism, high enzyme activity and rich enzyme system;

2. The fermentation process is extensive and there is no strict aseptic condition;

3. The equipment has simple structure, low investment, low energy consumption and easy operation;

4. The post-treatment is simple, with little pollution and almost no wastewater discharge.

Disadvantages:

1. Limited to microorganisms with low water activity, few choices;

2. Slow fermentation speed and long period;

3. The composition of natural raw materials is complex and sometimes changes, which affects the yield and quality;

4. The process parameters are difficult to detect and control;

5. Less products, more labor and high strength.