The effects of NaCl and KCl at varying ionic strengths on catalase and glutathione peroxidase (GSH-Px)
activities and lipid oxidation in ground Longissimus dorsi (LD) of cattle and camel and breast muscle of
chicken during refrigerated storage were studied. NaCl and KCl significantly increased 2-thiobarbituric
reactive substances (TBARS) and peroxide values. TBARS and peroxide values increased and GSH-Px activity
decreased during 4 day storage in the 4 °C, but catalase activity was stable. Salt type had no consistent effect
on GSH-Px and catalase activities. Chicken samples had lower enzyme activities and TBARS content than
cattle and camel. Their peroxide values were lower than camel samples. Camel meat showed higher catalase
activity and TBARS content than cattle meat. Results indicated that negative correlation between lipid
oxidation and GSH-Px activity and the accelerated lipid oxidation in salted meat may be partly related to a
decrease in GSH-Px activity