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

Battley, Edwin H.; Putnam, Robert L.; Boerio‐Goates, Juliana

doi:10.1016/s0040-6031(97)00108-1

Cited by 57 publications

(34 citation statements)

References 11 publications

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“…(13,14) However, some aspects of the apparatus have been modified. The Labview ® (National Instruments, Austin, Texas) software that interfaced the data acquisition instrumentation to the computer has been replaced by a BASIC program that allows for a postexperiment examination of the temperature drifts.…”

Section: Methodsmentioning

confidence: 99%

Molar heat capacity and thermodynamic functions of zirconolite CaZrTi2O7

Woodfield

Boerio‐Goates

Shapiro

et al. 1999

The Journal of Chemical Thermodynamics

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Section: Methodsmentioning

confidence: 99%

Molar heat capacity and thermodynamic functions of zirconolite CaZrTi2O7

Woodfield

Boerio‐Goates

Shapiro

et al. 1999

The Journal of Chemical Thermodynamics

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“…There 436 U. von Stockar are many more or less speculative estimations for c G 0 X in the literature, which are mostly based on model estimates for the entropy of dry biomass (for a review, see von Stockar and Liu [43]). The only value of the absolute entropy in dry biomass with an experimental basis was determined by lowtemperature calorimetry by Battley et al [46]. Combining this with heat of combustion data yields an estimation for the Gibbs energy of combustion of dry biomass of c G 0 X D 515 kJ=C-mol for S. cerevisiae.…”

Section: General Equationsmentioning

confidence: 99%

Biothermodynamics of live cells: a tool for biotechnology and biochemical engineering

Stockar

2010

Journal of Non-Equilibrium Thermodynamics

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The aim of this contribution is to review the application of thermodynamics to live cultures of microbial and other cells and to explore to what extent this may be put to practical use. A major focus is on energy dissipation effects in industrially relevant cultures, both in terms of heat and Gibbs energy dissipation. The experimental techniques for calorimetric measurements in live cultures are reviewed and their use for monitoring and control is discussed. A detailed analysis of the dissipation of Gibbs energy in chemotrophic growth shows that it reflects the entropy production by metabolic processes in the cells and thus also the driving force for growth and metabolism. By splitting metabolism conceptually up into catabolism and biosynthesis, it can be shown that this driving force decreases as the growth yield increases. This relationship is demonstrated by using experimental measurements on a variety of microbial strains. On the basis of these data, several literature correlations were tested as tools for biomass yield prediction. The prediction of other culture performance characteristics, including product yields for biorefinery planning, energy yields for biofuel manufacture, maximum growth rates, maintenance requirements, and threshold concentrations is also briefly reviewed.

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“…This is due to the lack of published information on the impact of cyanide on physical properties of microorganisms. Presently, there is only one report on the thermodynamic data of lyophilized microbial biomass, which used an adiabatic calorimeter to quantify the heat capacity of lyophilized Saccharomyces cerevisiae biomass [10]. However, owing to the irreproducibility of results, preference is given to a differential scanning calorimeter (DSC) over an adiabatic calorimeter in the quantification of thermodynamic properties of biological materials [11][12][13].…”

Section: Discussionmentioning

confidence: 99%

“…An aliquot of the suspension was tested for any residual carbohydrates using the Durham tube method [18]. Once the metabolic activity had ceased, the biomass was centrifuged and lyophilised [10]. All procedures were repeated until a suitable quantity of dry biomass was obtained.…”

Section: Sample Preparationmentioning

confidence: 99%