Bacteria Heterotrophic

Heterotrophic bacteria are bacteria that require organic carbon sources for their nutrition.

Main features of heterotrophic bacteria:

  1. Organic compounds such as carbohydrates, proteins and lipids are used for nutrition. They cannot metabolize inorganic carbon, unlike autotrophic bacteria.

  2. They can be saprotrophs, parasites or symbionts depending on the source of organic matter.

  3. Includes most known pathogenic bacteria, such as staphylococci, streptococci, Escherichia coli, etc.

  4. They play an important role in the cycle of substances, decomposing organic residues.

  5. Widely used in the food industry to obtain fermentation products.

Thus, heterotrophic bacteria play a key role in ecosystems and are of great practical importance for humans, despite the presence of pathogenic species among them. Their distinctive feature is the use of organic compounds as a source of carbon and energy.



Heterotrophic bacteria are one of the types of bacteria that require organic substances as a source of carbon for their life.

Although heterotrophs make up about 7% of all types of microorganisms, many of them are used for industrial activities: * Plant waste * Animal waste: urine, wastewater * Complex humus * Sugar syrups

In different living conditions, such bacteria actively multiply and become anaerobic. That is, they do not undergo the process of oxidation and release of oxygen. In such cases, the problem of accumulation of harmful substances may arise, since during the breakdown of amino acids, microorganisms can release ammonia, and with excessive contamination and bacterial growth, hydrogen sulfide, methanol, ethanol, aldehyde and acids.