What are the functions of defoaming agents for fermentation?

Fermentation is a process that uses microbial activity to produce chemical reactions and is commonly used in food processing, brewing, and pharmaceuticals. In some cases, the fermentation process can produce large amounts of foam, which may adversely affect the production process. In order to solve this problem, scientists have developed defoaming agents for fermentation.
Antifoam for fermentation is a chemical specifically designed to inhibit foam production and control foam accumulation. It can effectively destroy the structure of foam and reduce the dissolution and release of gas in the liquid, thereby preventing the formation and increase of foam. Its main functions in the fermentation process are as follows:

1. Inhibit the generation of foam: It can reduce the solubility of gas in liquid, thereby reducing the formation of foam.

2. Control the accumulation of foam: It can destroy the stable structure of foam, cause it to burst and dissipate, and prevent the accumulation and accumulation of foam.

3. Improve fermentation efficiency: By inhibiting the generation and accumulation of foam, defoaming agents can improve the stability and mass transfer efficiency of the fermentation system, thereby improving fermentation efficiency.

The method of using defoaming agent for fermentation is as follows:

1. Choose the appropriate defoaming agent: Choose the appropriate defoaming agent according to different fermentation processes and needs. Common defoaming agents include silicones, phenols, lipids, etc., which need to be selected according to the actual situation.

2. Add defoaming agent: According to the specific conditions of the fermentation system, add defoaming agent in a timely manner during the fermentation process. Usually, antifoaming agents can be added directly to the fermentation broth, or mixed with a certain proportion of water or solution before adding.

3. Control the dosage: According to the foam generation and process requirements during the fermentation process, reasonably control the dosage of defoaming agent. It is usually recommended to try an appropriate amount when using it for the first time, and then decide whether the dosage needs to be adjusted based on the effect.

4. Stir evenly: After adding the defoaming agent, it is necessary to ensure that the fermentation liquid is fully stirred to ensure that the defoaming agent can be evenly distributed and work.