Introduction to terms
Secondary metabolism generally refers to that microorganisms, during a certain growth period Primary metabolites They are precursors, which synthesize some substances that have no physiological function to microbial life activities. This process is called secondary metabolism, and the products formed are secondary metabolites. Secondary metabolites are mostly compounds with complex molecular structure, such as antibiotics, toxins, alkaloids, etc. Due to the wide variety of secondary substances, their metabolic reactions are also very different, and certain secondary metabolic reactions only occur in certain species, organs or tissues under certain environmental and time conditions. For microorganisms, some substances synthesized by microorganisms in a certain growth period have no obvious effect on the metabolism of microorganisms.
