|
KMID : 1024620030230020109
|
|
Food Science of Animal Resources
2003 Volume.23 No. 2 p.109 ~ p.114
|
|
|
Effect of Carcass Traits, Sarcomere Length and Meat Quality Properties on Beef Longissimus Tenderness at 24 hr Postmortem
|
|
Moon S. S.
Park Goo-Boo
Kim Jin-Seong
Joo Seon-Tea
Hur S. J.
Kang K. H.
Yang Han-Sul
Jeong Jin-Youn
|
|
|
Abstract
|
|
|
|
This study was conducted to investigate the effect of sarcomere length, carcass and quality traits on tenderness of Hanwoo beef at 24 hr postmortem. Immediately after slaughter, a total number of 30 carcasses(Hanwoo bull) selected, and sarcomere length was determined during rigor development(1, 3, 6, 12 and 24 hr). Tenderness group of longissimus dorsi muscle classified into tender group(7.5 kg/, n=9), or tough group(9.0 kg/, n=9) by shear force value at 24 hr postmortem, and estimated carcass traits, meat color, connective tissue and sensory property at 24 hr postmortem. Results showed that tender group had heavier carcass weight, thicker back fat, higher marbling score, lighter meat color, more white fat color and lower texture score(p<0.05). The change of sarcomere length was linearly decreased(p<0.05) from 3 hr postmortem, and the sarcomere length of tender group was significantly(p<0.05) longer than that of tough group at 3, 6 and 24 hr postmortem. The tender group showed significantly lower(p<0.05) shear force value of intramuscular connective tissue(IMCT), better(p<0.05) tenderness and overall acceptability compared to the tough group. Results indicated that tenderness of beef longissimus dorsi muscle could be improved by thicker back fat, higher marbling score and lower texture score, and predicted by sarcomere length of pre-rigor(3 and 6 hr postmortem). Also, the tenderness of beef longissimus dorsi muscle could be closely related to shear force value of IMCT, compared to total collagen and soluble collagen content in the same age.
|
|
|
KEYWORD
|
|
|
Hanwoo bull, tenderness, collagen, sarcomere length
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|