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Physicochemical traits of Holstein loin and top round veal from two slaughter age groups

  • Yim, Dong-Gyun (Department of Health Administration and Food Hygiene, Jinju Health College) ;
  • Park, Sang-Woon (Department of Animal Science and Resources, Sangji University) ;
  • Chung, Ku-Young (Department of Animal Science and Resources, Sangji University)
  • Received : 2015.04.02
  • Accepted : 2015.06.02
  • Published : 2015.07.31

Abstract

The objective of this study was to investigate the physicochemical and microbial quality of loin (m. longissimus dorsi) and top round (m. Semimembranosus) in Holstein veal produced from two slaughter age groups (5 and 8 months of age). A total of 20 Holstein calves were randomly selected from a local cattle farm. The slaughtered cold carcasses were vacuum-packaged. The samples were analyzed for proximate composition and physicochemical analyses and stored for 1, 7, 10, 20 and 30 days for microbiological analyses. Fat and protein contents of loin for the 8 month group were higher than those for the 5 month groups (p < 0.05). For both loin and top round muscles, the pH, cooking loss and the shear force values for the 5 month group was higher than those for the 8 month group (p < 0.05). On the other hands, the water-holding capacity (WHC) for the 8 month group was higher than those for the 5 month group (p < 0.05). In terms of meat color, CIE $L^*$ (lightness) for both muscle were higher in the 5 month group than in the 8 month groups. On the other hands, $a^*$ (redness) were higher in the 8 month group than in the 5 month groups (p < 0.05). Total aerobic counts in all samples remained up to 30 days at values less than 7 log CFU/g. However, there was no significant difference for both muscles between the two age groups. The results indicate that Holstein muscles from the 8 month group had desirable quality properties than those from the 5 month group.

Keywords

Holstein veal;Loin;Top round;Meat quality;Slaughter age

Acknowledgement

Supported by : IPET

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