- high-resolution terminology - matching measurements at high-resolution
Oxycaloric equivalent
Description
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
