Abstract
Calculations are made of the thermodynamic changes accompanying the growth of Pseudomonas saccharophila autotrophically on hydrogen and heterotrophically on acetic acid, pyruvic acid, lactic acid, glucose, and sucrose, for the purpose of determining the extent to which the energetics of autotrophic and heterotrophic growth are related. Growth with respect to each substrate is divided into equations representing the processes of anabolism and catabolism, the sum of which is an equation representing metabolism. Using appropriate values for the thermodynamic properties of the substances represented by the terms in the equations, it becomes possible to calculate the changes in free energy, enthalpy, and entropy accompanying these processes. The results suggest, but do not rigorously prove, that the quantity of available electrons conserved within the substance of the cells is linearly related to those potentially available from the electron donors, whether these latter are organic or inorganic. The efficiency of electron conservation can be used to calculate the changes in free energy, enthalpy, and entropy accompanying metabolism.Key words: bacterial growth thermodynamics, electron conservation.
Publisher
Canadian Science Publishing
Subject
Genetics,Molecular Biology,Applied Microbiology and Biotechnology,General Medicine,Immunology,Microbiology
Cited by
7 articles.
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