2026-04-10Views：
Fermentation sterile air needs to meet the following criteria:
air flow: It is necessary to continuously provide a certain flow of compressed air to ensure the continuous progress of the fermentation process. The specific flow requirements are determined according to the fermentation scale and process requirements.
Pressure: The pressure of air should be maintained between 0.2 and 0.4MPa. This pressure range ensures that the air enters the fermenter efficiently, providing the necessary oxygen for the microorganisms.
Relative humidity: 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, ensuring air quality.
Temperature: The temperature of the air entering the fermentation tank can be 10~30 ℃ higher than the culture temperature. Appropriate temperature helps the growth and metabolism of microorganisms, thereby improving the efficiency of fermentation.
Cleanliness: The compressed air should not contain bacteria and other contaminants to ensure a sterile environment for the fermentation process. The specific cleanliness requirements can be set according to the fermentation process and product standards.
In summary, the standard of fermentation sterile air mainly involves air flow, pressure, relative humidity, temperature and cleanliness. These standards are set to ensure the smooth progress of the fermentation process and to improve the quality and yield of the product. In practice, these parameters should be adjusted and optimized according to the specific fermentation process and product requirements.
The oil content standard of compressed air for general industrial use is usually not more than 0.01 mg per cubic meter (ISO 8573-1 level 1 or GB/T 13277.1-2023 level 1), and some scenarios can be relaxed to 0.1 mg (level 2). The following are specific instructions: 1. international standards (ISO 8
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