张爱萍,师希雄,韩玲,岳建伟,孙金龙,张有富.宰后藏羊肉Hsp70表达量变化及其与肉品质相关性分析[J].农业机械学报,2018,49(7):375-381.
ZHANG Aiping,SHI Xixiong,HAN Ling,YUE Jianwei,SUN Jinlong,ZHANG Youfu.Correlation Analysis between Heat Shock Protein 70 Expression and Eating Quality during Postmortem Aging of Oula Tibetan Sheep Meat[J].Transactions of the Chinese Society for Agricultural Machinery,2018,49(7):375-381.
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宰后藏羊肉Hsp70表达量变化及其与肉品质相关性分析   [下载全文]
Correlation Analysis between Heat Shock Protein 70 Expression and Eating Quality during Postmortem Aging of Oula Tibetan Sheep Meat   [Download Pdf][in English]
投稿时间:2018-01-04  
DOI:10.6041/j.issn.1000-1298.2018.07.046
中文关键词:  藏羊肉  宰后成熟  Hsp70表达量  食用品质  相关性分析
基金项目:国家自然科学基金项目(31460433)和河西学院科研创新与应用校长基金项目(XZ2016007)
作者单位
张爱萍 甘肃农业大学
河西学院 
师希雄 甘肃农业大学 
韩玲 甘肃农业大学 
岳建伟 甘肃农业大学 
孙金龙 甘肃农业大学 
张有富 河西学院 
中文摘要:为研究欧拉藏羊肉宰后成熟过程背最长肌中热休克蛋白Hsp70表达量的变化及其与肉品质间的关系,选取了24头甘南欧拉藏母羊,宰后在4℃环境中成熟,在成熟过程的不同时间点(2、12、24、48、72、120、168h)进行pH值、L*、a*、b*、剪切力、系水率、肌原纤维小片化指数(MFI)、糖原含量、Hsp70表达量的测定,并进行Hsp70表达量与肉品质指标的相关性分析。结果表明:Hsp70表达量与MFI呈极显著负相关(P<0.01),与L*呈显著负相关(P<0.05),与剪切力、糖原含量呈显著正相关(P<0.05),与系水率呈极显著正相关(P<0.01)。
ZHANG Aiping  SHI Xixiong  HAN Ling  YUE Jianwei  SUN Jinlong  ZHANG Youfu
Gansu Agricultural University;Hexi University,Gansu Agricultural University,Gansu Agricultural University,Gansu Agricultural University,Gansu Agricultural University and Hexi University
Key Words:Oula Tibetan sheep meat  postmortem aging  heat shock protein 70 level  eating quality  correlation analysis
Abstract:The 70kDa heat shock protein (Hsp70) is a molecular chaperone that participates in various cellular processes, the role and significance of Hsp70 in postmortem muscle still remains unclear. The objective was to evaluate the relationship between the expression of heat shock protein 70 (Hsp70) and eating quality of Oula Tibetansheep meat during postmortem aging. Totally 24 female Oula Tibetan sheep in Gannan were slaughtered at 4℃ to aging,and then the pH value, chromaticity, shear force, WHC, MFI, glycogen and Hsp70 concentration were determined during postmortem aging, and the relationship between Hsp70 and eating quality was determined. Statistical analysis indicated that Hsp70 level had significant negative correlation with MFI (P<0.01) and L*(P<0.05), while it was significantly and positively correlated with shear force, glycogen(P<0.05) and WHC (P<0.01), respectively. The results suggested that Hsp70 may be involved in postmortem meat quality development. The research result can provide an important theoretical basis for the improvement of the quality of the Tibetan sheep meat during postmortem.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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