西藏斯布牦牛脏器品质及活性物质分析  

Analysis on organ quality and activity of Tibetan Sibu yak

作　　者：张玉卿[1] 郭兆斌[1] 韩玲[1] 参木友[2] 余群力[1] 

机构地区：[1]甘肃农业大学食品与工程学院,甘肃兰州730070 [2]西藏自治区农牧科学院,西藏自治区拉萨850000

出　　处：《甘肃农业大学学报》2015年第4期115-120,共6页Journal of Gansu Agricultural University

基　　金：国家公益性行业(农业)科研专项经费资助项目(201203009);国家现代农业(肉牛牦牛)产业技术体系项目(CARS-38)

摘　　要：研究分别选取西藏斯布牦牛的肝脏、心脏、肺脏和肾脏为试验材料,以青海海北牦牛为对照,研究了西藏斯布牦牛的食用品质、营养特性及生物活性物特征.结果表明:西藏斯布牦牛肝脏和心脏色泽较暗,但属于正常颜色,pH1值分别为5.68、5.14,剪切力分别为1.02kgf、1.48kgf,熟肉率分别为77.59%、79.37%,相比青海海北牦牛,西藏斯布牦牛其pH1值在规定的范围值内,剪切力高于对照,熟肉率低于对照;西藏斯布牦牛肝脏和心脏的水分含量分别为69.89%、76.20%,蛋白质含量分别为20.89%、17.31%,脂肪含量分别为3.00%、3.62%,灰分含量分别为1.67%、1.29%,相比对照青海海北牦牛,其水分和脂肪相差不大,蛋白质含量高,矿物质丰富;同时测得西藏斯布牦牛含有较高的生物活性物,其中肝脏和心脏左旋肉碱含量分别为29.28、13.20mg/kg,牛磺酸含量分别为4.52、1.28mg/g,肝脏谷胱甘肽含量为0.4mg/g,肾脏谷胱甘肽含量是0.26mg/g,肺脏和心脏中肝素钠含量分别为100.54、41.04mg/kg.相比对照青海海北牦牛,西藏斯布牦牛的左旋肉碱、谷胱甘肽含量较高,而牛磺酸、肝素钠含量低于青海海北牦牛,因此认为,西藏斯布牦牛脏器是可以充分利用的资源,具有很高的食品营养价值.Tihetan Sibu yak liver, heart, lungs and kidneys were taken as the test materials, and Qinghai yak was taken as the control, the edible quality, nutrient characteristics and biological activity of the yak were studied. The results showed that, the liver and heart color of Tibetan Sibu yak were normal dark, pill values of the liver and heart were 5. 68 and 5. 14,, respectively, which were both within the regulation range. The shear force of the liver and heart were 1.02kgf and 1. 48 kgf, respectively, which were both higher than that of control. The cooked rates of the liver and heart were 77.59% and 79.37% ,respective- ly,which were both lower than that of control. The moisture contents, protein contents, fat contents and ash contents of the liver and heart were 69. 89 g/100g and 76.20 g/100g,20. 89 g/100g and 17. 31 g/100g, 3. 00 g/100g and 3. 62 g/100g, 1.67 g/100g and 1.29 g/100g, respectively. Compared with control,Tibetan Sibu yak had higher protein content and abundant minerals. The biological active substances of Tibetan Si- bu yak were also higher, the carnitine and taurine contents of the liver and heart were 29. 28 mg/kg and 13. 20 mg/kg, 4. 52 mg/g and 1.28 mg/g, respectively. Meanwhile, the liver also contained 0. 4 mg/g gluta- thione, the kidneys also contained 0. 26 mg/g glutathione, the heparin in lung and heart were 100. 54 mg/kg and 41.04 mg/kg, respectively. Compared w/th control, L-carnitine and glutathione were both higher, tau- fine and heparin sodium contents were both lower. The results indicated that the organs of Tibetan Sibu yak could be made full use,since they had high value in use.

关 键 词：西藏斯布牦牛 食用品质 营养特性 生物活性物质 

分 类 号：TS251.9[轻工技术与工程—农产品加工及贮藏工程]