Degradation of myofibrillar proteins can lead to soluble proteolytic fragments which may be useful in indicating the level of
meat tenderness. The TCA soluble peptide content of the three meat systems irradiated at different doses is shown in Fig. 4.When the irradiation dose increased, a concomitant increase in the TCA soluble peptide content was seen in all the three meat systems.The highest increase was observed in irradiated (10kGy) chicken
meat while the lowest was found in lamb meat. There was 18%,22% and 38% increase in TCA soluble peptide content when chicken meat was irradiated at 2.5, 5 and 10 kGy, respectively.KetnawaandRawdkuen(2011), reported that the highest content of TCA soluble peptides was found in chicken followed by beef and squid muscle treated with 20% bromelain extract.