Requirements for sterile air in fermentation industry

The requirements of the fermentation industry for sterile air mainly include the following:

continuously provide a certain flow of compressed air: this is the basic condition to ensure the continuous fermentation process. The flow of compressed air needs to be steady and continuous to ensure that the microorganisms in the fermenter get enough oxygen for their respiratory and metabolic activities.

The pressure of the air is maintained within a certain range: the pressure of the air is usually required to be between 0.2 and 0.4 MPa. The pressure in this range can ensure that the air enters the fermenter effectively and provides the necessary oxygen for the microorganisms.

Control the relative humidity of the air: Before entering the filter, the relative humidity of the air should be less than 70%. Relative humidity control helps prevent filter clogging and microbial growth, thereby ensuring air quality.

Adjust the temperature of the air entering the fermenter: the temperature of the air entering the fermenter may be 10-30°C higher than the culture temperature. Appropriate temperature helps the growth and metabolism of microorganisms and improves the efficiency of fermentation.

Ensure the cleanliness of compressed air: compressed air should not contain bacteria and other pollutants. In engineering design, it is generally required that in the 1000 use cycle, only one bacteria is allowed to pass, that is, the sterility of the filtered air should reach a very high standard.

In order to meet the above requirements, the fermentation industry usually adopts a series of air filtration and sterilization technologies, including physical filtration, chemical disinfection and ultraviolet radiation to ensure that the air entering the fermentation tank meets the sterile standard. These measures are essential to ensure the smooth progress of the fermentation process and improve product quality.