南疆多浪羊不同部位脂肪组织中挥发性风味成分分析
2017-11-16刚虎军古扎力孜克·肉孜苑贝贝任少东王伟华
刚虎军+古扎力孜克·肉孜+苑贝贝+任少东+王伟华



摘 要:采用顶空固相微萃取(solid-phase microextraction,SPME)技术结合气相色谱-质谱法(gas chromatography-mass spectrometry,GC-MS),对新疆多浪羊不同部位脂肪组织中挥发性风味物质的组成进行研究,共检测出78 种化合物,其中以酸类、酯类和醛类为主。尾部脂肪组织中酸类化合物占37.50%,皮下脂肪组织中酸类化合物占41.38%,肠道脂肪组织中酯类化合物占43.48%,肾脏周围脂肪组织中酸类化合物占29.63%。不同部位脂肪组织中挥发性风味化合物的组成不同,酸类化合物为主要成分,推测短链挥发性脂肪酸是多浪羊肉特征风味的主要组成成分。
关键词:多浪羊;脂肪组织;固相微萃取-气相色谱-质谱法;挥发性风味物质
Analysis of Volatile Flavor Components of Different Adipose Tissues in Duolang Sheep in South Xinjiang
GANG Hujun, Guzhalizike·ROUZI, YUAN Beibei, REN Shaodong, WANG Weihua*
(Xinjiang Production and Construction Corps Key Laboratory of Deep Processing of Agricultural Products in South Xinjiang,
College of Life Science, Tarim University, Alar 843300, China)
Abstract: This experiment investigated the volatile flavor components of different adipose tissues in Duolang sheep in south Xinjiang using headspace solid phase microextraction combined with gas chromatography mass spectrometry
(SPME-GC-MS). A total of 78 compounds were detected, mainly including acids, esters and aldehydes. Acids accounted for 37.50%, 41.38%, and 29.63% of the total volatiles in tail, subcutaneous, and perirenal adipose tissues, respectively. And esters accounted for 43.48% in intestinal tissues. The volatile flavor compositions of these different adipose tissues were different, which were all dominated by acids. It was speculated that short-chain volatile fatty acids contributed dominantly to the characteristic flavor of the meat of Duoloang sheep.
Key words: Duolang sheep; adipose tissue; solid-phase microextraction-gas chromatography-mass spectrometry; volatile flavor components
DOI:10.7506/rlyj1001-8123-201708006
中圖分类号:TS251.1 文献标志码:A 文章编号:1001-8123(2017)08-0028-06
多浪羊又称麦盖提羊,主要分布在叶尔羌河流域和喀什等地区[1-3]。多浪羊肉营养丰富,肌纤维较细,易消化,富含多种矿物质,并且具有蛋白质含量较高、脂肪及胆固醇含量较低的特点,是上佳的肉类食品[4]。羊肉的特征风味物质主要来源于脂肪组织[5-6]。唐璐等[7]总结了羊肉特征风味的主要组成成分,包括低级饱和脂肪酸、硬脂酸、酚类、含硫、含氮化合物及杂环类化合物等物质。Wong等[8-9]研究了羊肉脂肪组织中的脂肪酸,认为挥发性脂肪酸是羊肉特征风味的主要成分。丁艳艳等[10]分析了不同品种羊肉中的支链脂肪酸,得出支链脂肪酸对羊肉的特征风味有一定影响。顶空固相微萃取
(solid-phase microextraction,SPME)是在固相萃取的基础上由Belartdi等[11]在1989年提出的一种新方法,它是一种集采样、萃取、浓缩、进样于一体的新型无溶剂萃取技术,具有操作简便、快速、样品用量少、灵敏度高、可现场取样等优点[12],SPME已被应用于许多领域,如工业、农业、食品行业等[13]。……
