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  Section: General Biotechnology / Introduction
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Introduction to Biotechnology

Further Reading:
Scope & Importance

During 1970s, biotechnology emerged as a new discipline, as a result of marriage of biological science with technology. It has been possible due to revolutionary discoveries made in these two areas. Biotechnology is not a pure science, but an integrated effort of these two, the root of which lies in biological science. Biotechnology is defined by different organizations in different ways. It has been broadly defined as, "the development and utilization of biological processes, forms and systems for obtaining maximum benefits to man and other forms of life". Biotechnology is "the science of applied biological process" (Biotechnology : A Dutch Perspective, 1981).

Following are a few definitions given by other organizations :

Biotechnology is the application of scientific and engineering principles to the processing of materials by biological agents to provide goods and service. [The Organization for Economic Cooperation and Development (OECD), 1981].

The integrated use of biochemistry, microbiology and engineering sciences in order to achieve technological application of the capabilities of microorganisms, cultured tissue, cells, and parts their of [The European Federation of Biotechnology (EFB), 1981; O'Sullivan, 1981].

  Biotechnology tree
A Biotechnology Tree

The application of biochemistry, biology, microbiology and chemical engineering to industrial process and products and on environment [International Union of Pure and Applied Chemistry (IUPAC), 1981.]

In the definition given by OECD, "scientific and engineering principles" refer to microbiology, genetics, biochemistry, etc. and "biological agents" mean microorganisms, enzymes, plant and animal cells. The meaning of these three definitions and others given by many organizations are more or less similar.

A unified definition of genetic engineering has been given by Smith (1996) as "the formation of new combinations of heritable material by the insertion of nucleic acid molecules produced by whatever means outside the cell, into any virus, bacterial plasmid or other vector system so as to allow their incorporation into a host organism in which they do not naturally occur but in which they are capable of continued propagation.

If we trace out the origin of biotechnology, it is as old as human civilization. Aryans started preparing curd and alcohol before 2,500 B.C. They used to offer spiritual soma to Gods. Who can forget the story of butter-stealing (makhan chori) by Lord Krishna during Mahabharat period? Since then, the progress made in this direction was very slow until the realization of their significance, and the commercialization of products.

Although involvement of yeasts in alcohol production was known since the time of Louis Pasteur, yet detailed studies were made during 1900s. In 1920, for the first time, the Leeds City Council, U.K. established the Institute of Biotechnology. In the late 1960s, OECD was set up to promote policies for sound economic growth of the member countries. In 1978, European Federation of Biotechnology was established. Until 1970s, the efforts made by microbiologists, molecular biologists, geneticists, biochemists, medical scientists, biochemical engineers, agriculture scientists, virologists, etc. led to reach their respective disciplines to the zenith.

Table: Biotechnology-derived drug products.



Human insulin

Eli Lily, Novo Nordisk, Hoechst

Growth factors

Eli Lily, Novo Nordisk, Genetech, Pharmacia

Blood factors

Amgen, J & J, Sankyo, Chugai, Sandoz, Immunex


Roche, Wellcome, Daiichi, Sumitomo

Monoclonal antibodies

J & J, Cytogen


Smithkline, Merk, Shionogi

Source : Padh, 1996.

Table: Approved biotech diagnostics.


Infectious disease

Tumor marker

Analyte & drug

Blood screening


Monoclonal antibody






DNA probe






Recombinant DNA












Source : Padh, 1996

It is, therefore, interesting that the scientists are engaged in doing the most challenging task of mass production of growth hormones, insulin, vaccines, immunogenic proteins and polypeptides, gene therapy, biofertilizers, biopesticides, producing disease and stress-resistant plants, biomass, enzymes, antibiotics, acids, fuels, etc. Many biochemical companies such as National Pituitary Agency (U.S.A.), E. Lilly (U.S.A.), Kabi Vitram A B (Sweden), Genetech Co. (U.S.A.), Biogen (Switzerland), etc. are producing/trying to produce some of the above products by using genetic engineering techniques. Many Nobel Laureates including Dr. Har Govind Khorana, are associated with these companies.

Many international agencies are making effort to solve the national and international problems via collaborative works. Various programmes including molecular and environmental engineering have been taken up by the European Communities with frame work of their collaborative activities. For training purposes, under several biotechnological programmes, centers have been established, for example, the International Center for Cooperative Research and Training in Microbial Engineering (Japan) and Institute of Biotechnological Studies (U.K.).

Many countries have developed collaborative networks on several aspects such as "Regional Microbiology Network for South-East Asia" (supported by Japan and UNESCO). "Microbiological Resource Centers" (MICRCENS) [supported by UNESCO]; United Nations Environmental Programmes (UNEP), International Cell Research Organization (ICRO). These two organizations have participations of groups in many countries.


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