Chicken MP preparation
MP was extracted from chicken breast according to the method of Xiong (1993) with slight modifications. Chicken breast cubes were thawed and blended with 4 volumes of washing buffer (0.1 M NaCl, 50 mM phosphate buffer, pH 6.25) for 2 min using blender. The homogenate was centrifuged at 1,000×g for 15 min at 4℃ before collecting only pellet and that pellet was washed twice. The obtained pellet was re-suspended with 8 volumes of 0.1 M NaCl solution (adjusted pH to 6.25) prior removal of connective tissue by filtering through 2 layers of gauze. The filtrate was centrifuged at 1,000×g for 15 min and the pellet was collected for being chicken MP. The MP pellet was measured moisture content (%) according to AOAC method (AOAC, 2000). Protein concentration in MP pellet was estimated by Biuret method (Gornall et al., 1949) and bovine serum albumin was used as protein standard.ia