皮质醇激素和血液生化指标变化对猪肉劣质肉的指示作用  

Validity of Cortisol and Blood Biochemical Parameters to Indicate PSE and DFD Pork

作　　者：田寒友[1] 邹昊[1] 刘文营[1] 李金春[1] 李家鹏[1] 乔晓玲[1] 

机构地区：[1]中国肉类食品综合研究中心,北京100068

出　　处：《肉类研究》2013年第10期6-8,共3页Meat Research

基　　金：国家公益性行业(农业)科研专项(201303083)

摘　　要：为寻找猪肉劣质肉的指示指标,比较了不同质量猪肉对应皮质醇激素和血液生化指标的变化。结果表明,劣质肉中白肌肉(PSE)对应生猪血糖浓度显著高于正常肉(RFN)(P<0.05),劣质肉中黑干肉(DFD)对应生猪皮质醇浓度显著高于RFN肉(P<0.05)。说明血糖可作为劣质肉中PSE肉的重要指示指标,当宰前血糖浓度达到(17.21±3.12)mol/L时,可能产PSE肉;皮质醇可作为劣质肉中DFD肉的重要指示指标,当宰前皮质醇浓度达到(512.70±49.9)nmol/L时,可能产生DFD肉。In this study, changes in cortisol and blood biochemical parameters among different pork quality grades were compared to analyze the validity of these indicators to identify pale, soft, exudative （PSE） and dark, firm, dry （DFD） pork. Blood glucose concentrations were significantly higher in PSE pork compared to normal pork （RFN） from the same carcass （P 〈 0.05）, and DFD pork had a significantly higher serum cortisol concentration （P 〈 0.05）. Thus, blood glucose concentration can be used as an indicator of PSE pork. PSE pork may be formed when blood glucose concentration prior to slaughter reaches （17.21 ± 3.12） mol/L. Similarly, serum cortisol concentration can be an indicator of DFD pork, which may be confirmed when serum cortisol concentration in pre-slaughter pigs reaches （512.70 ±49.9） nmol/L.

关 键 词：皮质醇 血液生化指标 劣质肉 指示作用 

分 类 号：TS251.51[轻工技术与工程—农产品加工及贮藏工程]