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Which type of defoamer is more effective in the fermentation industry?
Jun 25, 2024Polyether defoamers and silicone defoamers are the most effective in the fermentation industry.
Polyether defoamers are widely used because of their good antifoaming ability and their suitability for thin fermentation broth. This type of defoamer mainly includes GP-type and GPE -type. GP- type defoamer is mainly formed by the polymerization of glycerol and propylene oxide or ethylene oxide. It has poor hydrophilicity and is suitable for basic culture medium to inhibit foam generation. GPE- type defoamer is based on GP type and then adds ethylene oxide to improve hydrophilicity, which is suitable for viscous fermentation broth.
Silicone defoamers perform well in high temperature and strong acid and alkali fermentation environments due to their advantages such as low surface tension, high-efficiency defoaming ability and chemical inertness. This defoamer can quickly spread on the foam surface and achieve the defoaming effect by destroying the elastic film on the foam surface. Silicone defoamers are also difficult to volatilize and have a long action time, which enables them to maintain a continuous antifoaming effect during long fermentation.
In summary, polyether defoamers and silicone defoamers perform well in the fermentation industry. They can not only quickly eliminate the generated foam, but also effectively inhibit the formation of new foam, thus ensuring the smooth progress of the fermentation process. These two defoamers have their own advantages, and the specific selection should be evaluated based on the actual application scenario and needs.
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