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  Section: General Biotechnology / Microbial Biotechnology
 
 
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Secondary Metabolites

 
     
 
Secondary metabolites are the microbial products which are produced during the idiophase of microbial growth. These are secreted when depletion of one or more nutrients is caused in the culture medium. Secondary metabolites are not further required by the micro-organisms for their growth. Secondary metabolites e.g. alkaloids, essential oils, pigments, etc. from cultured plant cells are described under Immobilized cell culture. But toxins and antibiotics of microbial origin are described in detail in Secondary Metabolites.
Content

Toxins

 

Bacterial toxins

   

Chemical nature

   

Production of b-exotoxin

   

Microbial insecticides

 

Mycotoxins, type, action, control

Antibiotics

 

Penicillins

 

 

Selection of culture of penicillium

   

Chemical nature of penicillins

   

Fermentation medium

   

Fermentation process

   

Antibiotic producing companies




 
     
 
 
     




     
 
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