宰后不同成熟时间对马肉背最长肌超微结构的影响  

Effects of Postmortem Aging Time on Ultrastructure of Horse Longissimus dorsi Muscle

作　　者：古扎努尔·艾斯卡尔 巴吐尔·阿不力克木 赵力男 Guzalnur·ASKAR;Batuer·ABULIKEMU;ZHAO Linan(College of Food Science and Pharmacy,Xinjiang Agricultural University,Ürümqi 830052,China)

机构地区：[1]新疆农业大学食品科学与药学学院,新疆乌鲁木齐830052

出　　处：《肉类研究》2020年第12期7-10,共4页Meat Research

基　　金：国家自然科学基金地区科学基金项目(31260381)。

摘　　要：以新疆昭苏县公马马肉背最长肌为实验对象,在0~4℃下分别成熟1、3、7、14、21、28 d,采用扫描电子显微镜和透射电子显微镜,研究马肉背最长肌在不同成熟时间肌纤维组织学特性的变化。结果表明:肌内膜厚度与肌束膜厚度呈负相关;肌节长度与肌纤维直径和肌纤维面积呈极显著负相关(P<0.01),与肌纤维密度呈正相关。肌纤维直径与肌纤维密度呈负相关,与肌纤维面积呈极显著正相关(P<0.01)。随着成熟时间的延长,肌原纤维超微结构发生变化,肌原纤维排列由整齐到疏松,由清晰到杂乱;成熟14 d时Z线开始降解。The Longissimus dorsi muscle of male horses from Zhaosu county of Xinjiang autonomous region was examined by scanning electron microscopy(SEM)and transmission electron microscopy(TEM)for histologic characteristics during postmortem aging times(1,3,7,14,21 and 28 days)at 0–4℃.The results showed that the thickness of the endomysium was negatively correlated with the thickness of the perineurium;the length of the sarcomere was significantly negatively correlated with muscle fiber diameter and area(P<0.01),but positively correlated with muscle fiber density.Muscle fiber diameter was negatively correlated with muscle fiber density,but showed a very significantly positive correlation with muscle fiber area(P<0.01).With the extension of postmortem aging time,the ultrastructure of myofibrils changed,and the arrangement of muscle fibers changed from neat to loose and from clear to messy;at 14 days postmortem,the Z-line began to degrade.

关 键 词：马肉 背最长肌 宰后成熟 微观结构 纤维特性 

分 类 号：TS251.4[轻工技术与工程—农产品加工及贮藏工程]