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http://dx.doi.org/10.5187/JAST.2007.49.2.269

Physico-chemical Properties and Changes of Sarcoplasmic Protein Bands of Chicken Meat Cuts with or without Salt during Cooking Temperatures  

Kim, Soo-Hee (Dept. of Animal Science and Institute of Agricultural Science and Technology, Chonnam National University)
Chin, Koo-Bok (Dept. of Animal Science and Institute of Agricultural Science and Technology, Chonnam National University)
Publication Information
Journal of Animal Science and Technology / v.49, no.2, 2007 , pp. 269-278 More about this Journal
Abstract
This study was performed to measure the pH, proximate composition, physicochemical properties, changes of protein bands, Hunter color values and endpoint cooking temperature of chicken leg and breast muscles during cooking from 64 to 74℃ with 2℃ increments. Chicken leg had higher pH, moisture and fat contents (%) and lower protein solubility(P<0.05) than chicken breast. Although the cooking losses(CLs, %) of chicken muscles increased with increased cooking temperature, the addition of 2% salt did not affect CL. The redness values of chicken leg without 2% salt were higher than chicken breast, however, the addition of 2% salt reduced the differences of the redness. Protein solubility decreased with increased cooking temperatures and were not affected by the addition of salt, and no further changes were observed higher than 68℃. Protein bands having the molecular weights of 66 and 54kDa were disappeared in the chicken leg at the cooking temperatures of 66~70℃, whereas 66, 54 and 34kDa in the chicken breast. These protein bands could be used potential indicators to determine the endpoint cooking temperature in chicken muscles.
Keywords
Chicken leg and breast muscles; Protein bands; Endpoint cooking temperature;
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