The enzyme activity was determined from the increase in
absorbance at 340nm with 1-chloro-2-4-dinitrobenzene
(CDNB) as the substrate and specific activity of the enzyme
expressed as formation of 1-chloro-2-4-dinitrobenzene
(CDNB) -GSH conjugate per minute per mg of protein.
Glutathione peroxidase (GPx) activity was determined in
the post mitochondrial fraction by the method of Paglia and
Valentine (1967).