Preservation of microbes Microbes are required for the production of fermentation products. They are very valuable for specific product. One product produced efficiently by specific microbe will not be given by all the microbes. The isolation of a desired organism for a fermentation process may be a time consuming and very expensive procedure and it is therefore essential that it retains the desirable characteristics that led to its selection. Also, the culture used for the fermentation process should remain viable and free from contamination. Thus, industrial cultures must be preserved and maintained in such way as to eliminate genetic change, protect against contamination and retain viability. Different techniques are used for maintenance and preservation of different organisms based on their properties. Selected method should also conserve the properties of the organisms. Techniques for the ...