Publication

Use of a novel heat-flux calorimeter for the measurement of heat generated during growth of K. fragilis on lactose

Urs von Stockar, Ian William Marison
1985
Journal Articles

Abstract

A novel bench-scale calorimeter, which is based on a heat-flux principle and modified to accommodate biol. reactions, was evaluated for detg. the heat evolution rate of an aerobic culture of the yeast Kluyveromyces fragilis grown on lactose. The instantaneous heat evolution rate was an accurate indicator for the instantaneous overall metabolic activity. On the other hand, the integrated heat prodn. increased in parallel to the accumulated cell dry wt. The ratios of heat generated per g biomass produced and of heat generated per mol of consumed O were const. throughout the expt. despite changing growth rates and metab. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/ca214d9c-4f82-4f78-bf68-4eb789d26e7b

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Urs von Stockar, Ian William Marison
1985
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/ca214d9c-4f82-4f78-bf68-4eb789d26e7b

About this result

Related concepts (32)

Heat

In thermodynamics, heat is the thermal energy transferred between systems due to a temperature difference. In colloquial use, heat sometimes refers to thermal energy itself. An example of formal vs. informal usage may be obtained from the right-hand photo, in which the metal bar is "conducting heat" from its hot end to its cold end, but if the metal bar is considered a thermodynamic system, then the energy flowing within the metal bar is called internal energy, not heat.

Heat equation

In mathematics and physics, the heat equation is a certain partial differential equation. Solutions of the heat equation are sometimes known as caloric functions. The theory of the heat equation was first developed by Joseph Fourier in 1822 for the purpose of modeling how a quantity such as heat diffuses through a given region. As the prototypical parabolic partial differential equation, the heat equation is among the most widely studied topics in pure mathematics, and its analysis is regarded as fundamental to the broader field of partial differential equations.

Heat flux

In physics and engineering, heat flux or thermal flux, sometimes also referred to as heat flux density, heat-flow density or heat flow rate intensity, is a flow of energy per unit area per unit time. Its SI units are watts per square metre (W/m2). It has both a direction and a magnitude, and so it is a vector quantity. To define the heat flux at a certain point in space, one takes the limiting case where the size of the surface becomes infinitesimally small.

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Use of a novel heat-flux calorimeter for the measurement of heat generated during growth of K. fragilis on lactose

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