, Volume 37, Issue 5, pp 331-345

Physiological similarity and bioreactor scale-up

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Abstract

An economically effective transfer of biological processes from laboratory to production scale is the main task of microbial process engineering. In contrast to the principle of geometrical, chemical, thermal, hydrodynamic or chemical similarity, recommended for scale-up of chemical reactors we propose the principle of physiological similarity. According to this principle same the microenvironment of the living cell must be established to reproduce the same physiological function (e.g. growth, product formation or substrate consumption rates) in the large scale bioreactor as in the laboratory one.