Empirical elemental formula for biomass
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|Organism||Budding yeast Saccharomyces cerevisiae|
|Reference||von Stockar, U. Liu, J. Does microbial life always feed on negative entropy? Thermodynamic analysis of microbial growth. 1999. Biochim Biophys Acta. 1412(3) p.198 table 4PubMed ID10482783|
|Primary Source||1) Edwin H. Battley, Robert L. Putnam, Juliana Boerio-Goates, Heat capacity measurements from 10 to 300 K and derived thermodynamic functions of lyophilized cells of Saccharomyces cerevisiae including the absolute entropy and the entropy of formation at 298.15 K, Thermochim. Acta 298 (1997) 37-46. (2) J.A. Roels, Energetics and Kinetics in Biotechnology, Elsevier, Amsterdam, 1983. AND (3) Edwin H. Battley, An empirical method for estimating the entropy of formation and the absolute entropy of dried microbial biomass for use in studies on the thermodynamics of microbial growth, Thermochim. Acta 326 (1999) 7-15.|
|Method||(Primary source 1) measurement of the heat capacity of lyophilized Saccharomyces cerevisiae cells over a temperature range of 10^300 K, and consequently determined the entropy of the dried biomass. (Primary source 3:) an empirical method to estimate the entropy of the biomass based on the atomic entropies of the atoms comprising the biomass. As the researcher showed, this method gives very good accuracy as compared to the values calculated based on the experimentally determined entropies.|
|Comments||This means that for every mole of carbon, there are 1.613 moles of hydrogen, 0.557 moles of oxygen and 0.158 moles of nitrogen. There are also 0.012 moles of phosphorus, 0.003 of sulfur, 0.003 of magnesium, 0.022 of potassium and 0.001 of calcium.|
|Entered by||Phil Mongiovi|