Physical meat quality characteristics of hot-deboned ostrich (Struthio camelus var. domesticus) Muscularis gastrocnemius, pars interna during post-mortem aging

摘要

There is a risk of shortening and toughening with hot-deboning of muscles. However, with refrigerated aging this phenomenon may be negated. Vacuum-packed hot and cold-deboned ostrich Muscularis gastrocnemius, pars interna were stored for 21 d at 4℃ to investigate the effects of hot-deboning on quality characteristics of ostrich meat during refrigerated storage. Muscle pH did not differ (P > 0.05) between hot and cold-deboned muscles during storage. Hot-deboning caused (P < 0.0001) more purge in the vacuum packages of the hot-deboned muscles (1.83 ± 1.31%) than in the cold-deboned muscles (0.67 ± 075%) during the 21-d aging period. Hot-deboned muscles were tougher (P < 0.05) than cold-deboned muscles from 24 h up to 5 d. Although hot-deboning caused muscles to be tougher than cold-deboned muscles, with aging at 4℃ beyond 5 d this toughness was found to be insignificant.