不同年龄牦牛肝中挥发性物质的测定及分析  

Analysis of volatile compounds on yak liver among ages

作　　者：党欣[1] 何晓林[2] 保善科 余群力[1] 杨濯羽[1] 

机构地区：[1]甘肃农业大学食品科学与工程学院,甘肃兰州730070 [2]青海省大通种牛场,青海大通810102 [3]青海省海北州畜牧兽医科学研究所,青海海北812200

出　　处：《甘肃农业大学学报》2013年第1期140-144,共5页Journal of Gansu Agricultural University

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

摘　　要：研究分别选取犊牦牛(6月龄)和成年牦牛(36月龄)肝,采用顶空固相微萃取(HS-SPME)和气相色谱质谱联用(GC-MS)对其挥发性化合物进行检测,分析了不同年龄牦牛肝中挥发性化合物的差异.结果表明:相比成年牦牛肝,犊牦牛肝中的醛类物质高出43.81%,酮类高出11.52%,而烃类低44.94%.芳香族化合物,成年牦牛肝中的含量是犊牦牛的17倍.此外,苯甲醛、壬醛、己醛、庚醛等与脂肪氧化有关的挥发性化合物,在犊牦牛肝中的相对含量明显高于成年牦牛.In order to investigate the effects of age on flavor of yak liver,the volatile compounds in the liver of calf（6 months of age） and adult（36 months of age） were determined by headspace solid phase micro extraction（HS-SPME） combined with gas chromatograph-mass spectrometer（GC-MS）.The results showed that aldehydes and ketones were 42.57% and 11.52% higher in calf than in adult.However,hydrocarbons were 44.94% lower in calf than in adult.Adult yak had more volatile compounds,the content was 17 folds higher than calf.Meanwhile the content of volatile compounds related to lipid oxidation include benzaldehyde,nonanal,hexanal and heptanal was higher in calf.

关 键 词：年龄 牦牛肝 气相色谱质谱联用 挥发性化合物 

分 类 号：S879.9[农业科学—畜牧兽医]