ABSTRACT

O produced. If a hexose sugar is used as the substrate, the overall equation can be written as follows:

(8.1)C H O +6O 6CO +6H O6 12 6 2 2 2→ + energy

A low rate of respiration is desirable, for a lower rate lengthens the storage life. The ratio of the volume of CO

released to the volume of O

absorbed is termed the respiratory quotient (RQ) and is used to evaluate the nature of the respiratory process.