Total free
sulphydryl groups were determined by reacting with 5,50-dithiobis
(2-nitrobenzoic acid) (DTNB).One gram of meat was blended with
50 ml of cold distilled water and homogenised.Protein concentration
of homogenate was diluted to 2 mg/ml with 0.1 M phosphate
buffer (pH 7.4) and protein content was determined using the Biuret
method. A 0.5 ml of homogenate was transferred to a tube and
dissolved in urea buffer (1:1).After incubation with 0.5 ml DTNB
reagent at room temperature for 15 min, absorbance was measured
at 412 nm.