Microcalorimetric investigations of the metabolism of yeasts. Growth in chemostat cultures on glucose

Brettel, R.; Lamprecht, I.; Schaarschmidt, B.

doi:10.1007/bf00505868

Cited by 33 publications

(1 citation statement)

References 11 publications

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“…Estimates from batch experiments were reported by several authors and range from 0.1 to 0.2 W per g of dry biomass 21,29,89,9o) However, such estimates are unreliable and in some cases may have been affected by enthalpy balance errors due to undetected byproducts. Some attempts to determine the maintenance energy dissipation from continuous cultures have been reported 3,21,91). In such experiments, the rate of heat dissipation is measured as a function of dilution rate and then extrapolated to zero by assuming that the heat released by the microbial culture can be broken down into heat associated with growth and with maintenance :…”

Section: Maintenance Energymentioning

confidence: 99%

The use of calorimetry in biotechnology

Stockar

Marison

1989

Advances in Biochemical Engineering/Biotechnology

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Section: Maintenance Energymentioning

confidence: 99%

The use of calorimetry in biotechnology

Stockar

Marison

1989

Advances in Biochemical Engineering/Biotechnology

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Heat flow measurements in aerobic microbial growth processes with a nonisothermal calorimeter operating directly in the fermenter

Heinritz¹,

Stoll²,

Glombitza³

1983

Acta Biotechnologica

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A nonisothermal flow cdorimeter operating directly in the fermenter was used for heat flow meitsurements of aerobic microbial growth processes with high biomass productivities. The measuring nrrangement.makes i t possible to describe transitional stages of aerobic yeast cell growth by thc ratio of heat production to oxygen consumption (oxy-caloric coefficient). The oxy-caloric coefficient was not constant under the described conditions. The results refer to the existence of an additional encrgy-delivering mechanism in microbial systems with aerobic carbon source utilization. The mechanism c:tn involve polyphosphnte bond division coupled to biomass synthesis. ZusamnicnfassungEin im Fermentor arbeitendes anisothermes DurchfluDkalorimeter wurde zu WiirmefluBiuessungen an seroben mikrobiellen Wachstumsprozessen bei hohen Biomassebildungsraten angeaendet. Die MeBanordnung erlaubt die Beschreibung des ubergangsverhaltens aerober Wachstumsvorgiinge durch die Ermittlung des Verhiiltnisses von Warmeproduktion und Sauerstoffverbrauch (oxy-kalorischer Koeffizient). Dieser Koeffizient ist unter den beschriebenen Bedingungen keine Konstante. Die experimentellen Ergebnisse deuten auf die Existenz eines zusiitzlichen energieliefernden Mechanismus in mikrobiellen Systemen, in denen die Kohlenstoff-nnd Energiequelle oxydntiv abgebaut wird. Dieser Mechanismus kann eine enge Kopplung der Spaltung von Polyphosphatbindungen und der Biomassesynthese enthnlten.

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Bench‐scale calorimetry – application in biotechnology

Zentgraf¹

1992

Acta Biotechnologica

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Two calorimetric techniques are described allowing us to monitor and control microbial processes at relatively high cell densities: dynamic and continuous calorimetry. These techniques have been applied to study microbial systems, e.g. the dependence of thermodynamic efficiency and heat yield on specific growth rate, the heat yield of mesophilic and thermophilic microorganisms, the oxy-calonc coefficient during aerobic microbial growth, as well as the energetics of the yeast-cell cycle. Such studies are of importance for optimizing biotechnical processes.

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Microcalorimetric investigations of the metabolism of yeasts. Growth in chemostat cultures on glucose

Cited by 33 publications

References 11 publications

The use of calorimetry in biotechnology

The use of calorimetry in biotechnology

Heat flow measurements in aerobic microbial growth processes with a nonisothermal calorimeter operating directly in the fermenter

Bench‐scale calorimetry – application in biotechnology

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