新疆肥尾羊脂肪特性研究

利用顶空固相微萃取-气相色谱-质谱联用技术对新疆肥尾羊的脂肪的特性进行研究。结果表明：脂肪的碘值为59.6g I2/100g，酸值为0.095mg KOH/g，皂化值为190.9mg KOH/g；脂肪酸主要由肉豆蔻酸、棕榈酸、硬脂酸、油酸、亚油酸、亚麻酸构成，分别占总脂肪酸总量的8.9%、23.6%、13.5%、34.9%、2.4%、1.3%；氨基酸的含量占样品总质量的0.02%，羊脂的挥发性成分主要由环丁醇、环己烷、乙酸乙酯等26种挥发性成分组成。

Fat Characteristics of Fat-Tailed Sheep from Xinjiang

The fat characterisics of tail fat tissue in fat-tailed sheep from Xinjiang were analyzed by solid-phase microextraction(SPME) coulped to gas chromatography(GC)-mass spectrmetry(MS).The iodine,acid,and saponification values were 59.6,0.095 KOH mg/g,190.9 KOH mg/g,respectively.The fatty acid composition consisted mainly ofmyristic acid,palmitic acid,stearic acid,oleic acid,linoleic acid and linolenic acid,which accounted for 8.9%,23.6%,13.5%,34.9%,2.4% and 1.3%,respectively.The amino acid content of the fat tissue was 0.02%.A total of 26 predominant volatile components were detected such as cyclobutanol,cyclohexane,ethyl acetate,and so on.