不同地区牦牛曲拉的品质分析  

Quality analysis of Yak Qula in different areas

作　　者：丁考仁青 王琳琳[2] 韩玲[2] 王军[2] 文鹏程[2] 纪银莉 

机构地区：[1]甘南藏族自治州畜牧科学研究所,甘肃合作747000 [2]甘肃农业大学食品科学与工程学院,甘肃兰州730070 [3]甘肃华羚生物技术研究中心,甘肃兰州730000

出　　处：《食品工业科技》2015年第1期105-109,共5页Science and Technology of Food Industry

基　　金：公益性行业(农业)科研专项经费项目(201303085)

摘　　要：为了研究不同地区牦牛曲拉的品质特点,对各地区牦牛曲拉的品质进行了综合评价。采集我国曲拉主产区的牦牛曲拉,对其吸光度、色度、营养成分及抗氧化指标进行测定与分析。结果表明:不同地区牦牛曲拉在有色物质含量、营养成分及氧化褐变程度等方面存在差异。其中,四川、新疆和西藏曲拉的有色物质含量均较少,色泽较好,其中西藏曲拉a*值和b*值最小,分别为3.4和31.3;云南、新疆、青海及甘肃等地曲拉的蛋白质含量都达到70%以上,且脂肪含量较低,营养品质较好;四川、新疆及藏南曲拉的过氧化氢值(POV)和硫代苯巴比妥酸值(TBARS)相对其他地区较低,氧化褐变较弱。在甘肃3个地区中,夏河曲拉在色泽和营养品质方面较好,碌曲曲拉的POV值和TBARS值在3个地区中最低,分别为0.46meq/kg和1.42mg/kg,其脂质过氧化程度较其他两地区弱,氧化褐变较低。因此,综合分析,四川、新疆、合作及夏河等地曲拉色泽较优,西藏、云南、新疆、青海及夏河等地曲拉营养品质较好,藏南、碌曲曲拉脂肪氧化程度较低。In order to investigate the quality characteristics and give a comprehensive evaluation of Yak Qula in different areas.Yak Qula as the research materials collected from main producing areas, and the absorbance, chromaticity, nutrition and antioxidant index were measured and analyzed.The result showed that there was a big difference in colored,nutrition and oxidation index of Yak Qula in different areas.The color of Qula from Sichuan, Xinjiang and Tibet were better than others,while the a＊ and b ＊ value from Tibet were 3.4 and 31.3 ,which were the lowest;More than 70% protein and low fat were contented of Qula from Yunnan, Xinjiang, Qinghai and Gansu, which showed that they had better nutritional quality; The peroxide value（PQV） and thiobarbituric acid reactive substances value （TBARS）from Sichuan, Xinjiang and Zangnan were lower than any other regions and the oxidation was lower.The Qula from different regions of Gansu were also measured and analyzed, the color and nutritional quality from Xiahe were better than others, Qula from Luqu had low oxidation and the P^V and TBARS value were 0.46meq/kg and 1.42mg/kg.Therefore,comprehensive evaluated,Qula from Sichuan, Hezuo and Xiahe had an optimal color quality,and Tibet,Yunan,Xijiang,Qinghai and Xiahe had a better nutritional quality,Zangnan and Luqu had a low oxidation.

关 键 词：曲拉 不同地区 品质分析 综合评价 

分 类 号：TS252.1[轻工技术与工程—农产品加工及贮藏工程]