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Directions and Products of Biotechnology

For medical students2 min readUpdated 2026-10-10

Biotechnology is a large-scale research and production sector that utilizes biological entities and their metabolic products to create commercial goods. The foundation of biotechnological processes lies in the targeted use of living cells, their structures, and metabolites to solve strategic challenges in medicine, agriculture, industry, and environmental protection.

Metabolite massPrimary metabolites are low-molecular-weight compounds with a mass of less than 1,500 Da.

Environmental remediationBioremediation cleanses the environment through the complete biodegradation or transformation of pollutants.

Synthesis feedstockCellular products serve as the baseline raw material that is transformed into the final commercial product.

Biosensor principleDetectors register physicochemical shifts upon contact with a biological agent.

Biological Entities and Process Implementation

Successful industrial scaling of biotechnological processes requires specialized equipment and well-designed raw material processing technologies. Products generated by cells act as primary substrates that, after technological processing, become final commercial products.

Modern biotechnology has significantly expanded the spectrum of biological agents utilized. Alongside classical microorganisms and isolated cell cultures, macro-objects are actively introduced into the production process:

Animal and human organs and tissues.
Whole plant organisms.

A prime example of using macro-objects is the production of specific immunoglobulins from horse blood serum, as well as the large-scale production of therapeutic agents based on human donor blood.

Classification of Biotechnology Products

Various fractions and secreted substances of living organisms are used in production processes. All target products are conventionally divided into four key groups:

Cells themselves (biomass). Cellular mass is used directly as a source of nutrients or a target product.
Large molecules. Synthesized by microorganisms during their cultivation. This category includes various enzymes, toxins, antigenic complexes, antibodies, and peptidoglycans.
Primary metabolites. Low-molecular-weight organic substances (with a mass strictly up to 1,500 Da). Their main feature is that they are vital for the normal growth and development of the producing cells themselves. This group includes amino acids, vitamin complexes, nucleotides, and organic acids.
Secondary metabolites. Compounds that can be either low-molecular-weight or macromolecular. They are not required for basic cell growth, but possess high biological activity. Typical representatives include antibiotics, alkaloids, hormonal preparations, and specific toxins.

Products of Biotechnological Synthesis

Modern technologies ensure the output of a wide assortment of substances covering the needs of several industries at once:

Pharmaceuticals and medicine: production of antibiotics, vaccines, hormones, vitamins, and immunomodulators. Blood products, monoclonal antibodies, antitumor cytostatics, and diagnostic agents occupy an important share.
Biochemistry: industrial synthesis of enzymes, lipids, nucleotides, and pure amino acids.
Agriculture: output of feed proteins for livestock, biological plant protection products, and safe insecticides.
Industrial chemistry: large-tonnage production of alcohols, acetone, butanol, sugars, organic acids, and yeast.

Ecology and Biosensor Technologies

A special place is occupied by bioremediation—an ecological direction aimed at environmental restoration (cleaning soils, water bodies, and air from pollutants). This process is implemented through two main mechanisms:

Bioconversion—partial transformation of harmful substances by living organisms.
Biodegradation—complete breakdown of pollutants into completely safe components.

Another innovative direction is biosensor technologies. These are the development of analytical devices for the precise indication and identification of biologically active substances (BAS) and macromolecules (such as nucleic acids or antigens). Their operating principle is based on recording physicochemical changes during the interaction of the detector with cells.

Examples of biosensor use:

Immunosensors for the rapid detection of the antigen-antibody complex.
Enzyme electrodes for determining blood glucose levels (the device records the release of $CO_2$ during the enzymatic breakdown of sugar molecules).

Strategic Tasks and Priority Directions

Biotechnological methods are actively integrated into the food industry (e.g., fish product processing), light industry, and chemical industry. Four priority directions for the development of the discipline are distinguished:

Medical and pharmaceutical.
Food.
Agricultural.
Ecological.

The final strategic goals consist of creating highly effective therapeutic and diagnostic agents for healthcare and veterinary medicine, as well as solving the global food program. In the agro-industrial complex, this means increasing crop yields, raising livestock productivity, and qualitatively improving food products (dairy, meat, confectionery, and bakery).

Mnemonic

To quickly remember the four main directions of biotechnology, use the acronym MEPS: Medical-pharmaceutical, Ecological, Food, Agricultural.

Frequently asked questions

Which microorganisms are the main producers of antibiotics?

The main producers of antibiotics are three groups of microorganisms.

Actinomycetes (Actinomycetes)—branching bacteria, predominantly the genus Streptomyces, which synthesize about 80% of natural antibiotics.
Molds (Fungi)—representatives of the genera Penicillium (Penicillium chrysogenum) and Cephalosporium (Cephalosporium acremonium), producing natural $\beta$-lactams and fusidic acid.
Typical bacteria—eubacteria, bacilli, and pseudomonads synthesizing polypeptide antibiotics (bacitracin, polymyxins).

Which specific therapeutic enzymes are obtained biotechnologically?

The following groups of enzymes are used as additional therapeutic agents:

Proteolytic enzymes (trypsin, chymotrypsin)—used topically to treat purulent wounds, remove blood clots, and liquefy viscous secretions.
Nucleases (ribonuclease, deoxyribonuclease)—used as antiviral agents.
Fibrinolytic preparations (fibrinolysin, streptokinase, streptodecase, urokinase)—designed to destroy blood clots.
Hyaluronidase (lydase)—catalyzes the breakdown of hyaluronic acid to resolve scars and adhesions.
Asparaginase—destroys asparagine in the blood, used for blood malignancies.

How do immunosensors function at the physicochemical level?

At the physicochemical level, the functioning of immunosensors is based on registering changes occurring during the interaction of the detector with a biological agent. In the case of immunosensors, such interaction is the specific antigen-antibody reaction. The device records physicochemical shifts arising at the moment of immune complex formation, allowing the indication of biologically active substances.

Which hybridomas are used to produce monoclonal antibodies?

To obtain monoclonal antibodies, hybridomas are used, which are hybrid cells created by somatic hybridization of two cell types:

Immune B-lymphocytes (e.g., mouse splenocytes)—act as donors of the property to synthesize specific antibodies.
Myeloma cells—tumor cells that do not produce their own antibodies, but impart the ability for endless division to the hybridoma.

As a result of fusion, a hybridoma is formed that rapidly multiplies and produces homogeneous, highly specific antibodies.

What is the difference between primary and secondary metabolites?

Primary metabolites (amino acids, vitamins) have a low molecular weight and are vital for the growth of the cells themselves. Secondary metabolites (antibiotics, hormones) are not required for basic cell growth.

What is bioremediation?

This is an ecological branch of biotechnology aimed at cleaning soils, water bodies, and air from pollutants using living organisms.

How does an enzyme electrode work when measuring glucose levels?

The sensor registers physicochemical changes in the environment—specifically, the release of carbon dioxide that occurs during the enzymatic breakdown of sugar.

Go deeper

Detailed mechanism of action of nucleic acid-based biosensors (DNA sensors).
Specifics of equipment for the industrial scaling of cell cultivation.
Differences between bioconversion and biodegradation processes at the molecular level.
Technologies for isolating immunoglobulins from animal serum and human donor blood preparations.