Koomkrong Nunyarat, Gongruttananun Nirat, Boonkaewwan Chaiwat, Noosud Jatuporn, Theerawatanasirikul Sirin, Kayan Autchara
Department of Animal Science, Kasetsart University, Bangkok, Thailand.
Department of Companion Animals Clinical Sciences, Kasetsart University, Bangkok, Thailand.
Anim Sci J. 2017 Dec;88(12):2044-2049. doi: 10.1111/asj.12859. Epub 2017 Jul 21.
The present study aimed to investigate the fiber characteristics of pork muscle exhibiting different levels of drip loss during storage. The samples were taken from Longissimus dorsi muscle to evaluate drip loss (n = 100). Fifteen muscles per group (low and high drip loss) were selected to evaluate the histological characteristics at 0 and 72 h of storage time. The statistical analysis revealed that a high drip loss group had greater endomysium thickness than a low drip loss group at 0 h of storage time (P < 0.05). There were no significant differences in total number of fibers, fiber diameter, fiber area and perimysium thickness at 0 h of storage time (P > 0.05). At 72 h of storage time, a high drip loss was evident in higher total number of fibers (P < 0.01), but smaller fiber diameter (P < 0.05), fiber area (P < 0.01) and endomysium thickness (P < 0.01) than a low drip loss group. There was no significant difference in perimysium thickness (P > 0.05). In conclusion, drip loss might be affected by muscle structural characteristics during storage.
本研究旨在调查储存期间呈现不同滴水损失水平的猪肉肌肉的纤维特性。样本取自背最长肌以评估滴水损失（n = 100）。每组（低滴水损失和高滴水损失）选取15块肌肉，在储存时间0小时和72小时时评估其组织学特征。统计分析显示，在储存时间0小时时，高滴水损失组的肌内膜厚度大于低滴水损失组（P < 0.05）。在储存时间0小时时，纤维总数、纤维直径、纤维面积和肌束膜厚度方面无显著差异（P > 0.05）。在储存时间72小时时，高滴水损失组的纤维总数明显更多（P < 0.01），但纤维直径（P < 0.05）、纤维面积（P < 0.01）和肌内膜厚度（P < 0.01）均小于低滴水损失组。肌束膜厚度无显著差异（P > 0.05）。总之，储存期间滴水损失可能受肌肉结构特征的影响。
