돈골격근의 생화학적 특성에 관한 연구 2 . 환경온도가 Myosin B 의 생물학적 기능에 미치는 영향 = Studies on the Biochemical Properties of Post - mortem Porcine Skeletal Muscle 2 . The effect of environmental temperature on the biological function of myosin B from porcine skeletal muscle

다국어 초록 (Multilingual Abstract)

Samples were taken from the porcine longissimus dorsi of lumbar vertebra of the animals weighing over 110 kg of live weight. Samples were treated at 0℃ or for 30, 60. and 90 min at 40℃. Superprecipitation activity of myosin B from the samples at 40℃ was much lower than those at 0℃. No superprecipitation was found in the case of myosin B of those treated for 90 min at 40℃. Also ATP sensitivity of myosin B of the samples treated at 40℃, was lower than those at 0℃. In 40℃ treatment. small amount of M. H. C. was founded and α-actinin degradation. Thus, the differences found in this experiment seem to reflect the differences in biological function of the myosin B. As they correspond to PSE porcine muscle symptoms. it is Concluded that the porcine carcass has to be treated at 0℃ immediately after slaughter for production of good quality of porcine meat especially for the animals slaughtering at the live weight exceeding 110 kg.