Causes of foaming in biological fermentation
Foam is a coarse dispersion of gas in liquid. The gas and liquid are separated by a layer of liquid film and are not connected to each other. It is a gas-liquid heterogeneous system. Only continuous and sufficient contact between gas and liquid will produce excessive foam.
In most fermentation processes, due to the presence of surfactants such as proteins and metabolites in the culture medium, a certain amount of foam appears in the culture medium under aeration conditions.
The main reasons for foaming in biological fermentation are as follows:
1. The medium ratio and raw material composition The medium is rich in nutrients, high in viscosity, and produces many and lasting bubbles;
2. The greater the intensity of aeration and stirring, the more intense the foam will increase. Therefore, in the early stage of fermentation, since the nutrient components of the medium are consumed less and the medium is rich in components, it is easy to foam;
3. The sterilization quality of the culture medium is not good, the sugar and nitrogen are destroyed, the growth of microorganisms is inhibited, the seed hyphae is autolyzed, and a lot of foam is produced.
(Picture: Biological fermentation foaming)
Bio-fermentation defoaming solution
The control of microbial fermentation foam is a difficult problem to solve. If not controlled, the foam will reduce the production capacity of the equipment, extend the processing time and increase the cost. It can also cause other difficulties such as reduced biocatalytic activity.
In order to solve the foam problem, a biological fermentation defoamer can be added. The biological fermentation defoamer is a defoamer specially designed for the fermentation process and can be used for defoaming in various fermentation production processes.
Nanhui defoaming agent manufacturers are prone to foaming in the microbial fermentation process. The biological fermentation defoaming agent developed and designed in a targeted manner is a compound defoaming agent, which defoams very quickly and has obvious effects.
(Picture: Biological fermentation defoamer)
Nanhui biological fermentation defoamer has the following advantages:
1. Free sample: The manufacturer provides free sample service, and professional technology recommends samples according to your blistering situation;
2. Small addition amount: The amount of this defoamer is very small, and the recommended addition amount is one-thousandth to three-thousandths. The defoaming cost is low and the price is high;
3. Perfect service: professional technology recommends a reasonable addition ratio according to the characteristics of your fermentation process, which is easy to increase the output;
4. Easy to use: According to the characteristics of the fermentation process, it can be added to the basic material or added after high temperature sterilization in the later stage, which is very convenient to use.
