Cookies help us deliver our services. By using our services, you agree to our use of cookies. More information

Oxycaloric equivalent

From Bioblast
Revision as of 17:21, 31 December 2011 by Gnaiger Erich (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision β†’ (diff)

high-resolution terminology - matching measurements at high-resolution

Oxycaloric equivalent


The oxycaloric equivalent is the theoretically derived enthalpy change of the oxidative catabolic reactions per amount of oxygen respired, DeltakHO2, ranging from -430 to -480 kJ/mol O2. The oxycaloric equivalent is used in indirect calorimetry to calculate the theoretically expected metabolic heat flux from the respirometrically measured metabolic oxygen flux. Calorimetric/respirometric ratios (CR ratios; heat/oxygen flux ratios) are experimentally determined by calorespirometry. A CR ratio more exothermic than the oxycaloric equivalent of -480 kJ/mol indicates the simultaneous involvement of aerobic and anaerobic mechanisms of energy metabolism.

Abbreviation: DeltakHO2

Reference: Gnaiger_1983_J Exp Zool, Gnaiger_1990_Biochim Biophys Acta

MitoPedia methods: Respirometry