摘要
采用顶空气相色谱-质谱联用(GC-MS)仪结合同位素峰形校正检索技术鉴别了市售芝麻油风味成分中的71种化合物,占总检出化合物的90.2%。检出化合物可分为吡嗪、吡咯、吡啶、噻唑、噻吩、吲哚、唑、呋喃、醛类和酚类等,其中醛、酚、吡嗪和呋喃类化合物的含量较高,分别占风味成分含量的37.4%,20.1%,10.0%和6.7%。同位素峰形校正检索技术在低分辨率质谱上可对化合物的相对分子质量实现精确测量,从而为低分辨率四极杆质谱确定化合物的元素组成和解析化合物结构提供了重要依据,同时也为芝麻油的成分分析提供了新的技术手段。
The volatile compounds in sesame oil were analyzed by headspace gas chromatography - mass spectrometry（ GC- MS） with calibrated lineshape isotope profile search （CLIPs） function interg- rated in MassWorksTMsoftware. 71 kinds of components including pyrazines, pyrroles, pyridines, thi- azoles, thiophenes, indoles, oxazoles, furans, aldehydes and phenols, etc. could be identified, which account for 90. 2% of the total normalized peak areas. Among them, aldehydes, phenols, pyrazines and furans account for 37. 4% , 20. 1% , 10. 0% and 6. 7% , respectively. They were princi- pal contributors of sesame oil flavor components. The application of CLIPs can provide the accurate mo- lecular weight of compounds and an important basis for the low-resolution quadrupole mass spectrometer to identify the elemental composition and the structure of compound. The study provided a new techni- cal means for the component analysis of sesame oils.
出处
《分析测试学报》
CAS
CSCD
北大核心
2015年第7期782-788,共7页
Journal of Instrumental Analysis
基金
河北出入境检验检疫局自主立项项目(HE2013K011)
关键词
芝麻油
挥发性成分
气相色谱-质谱联用
同位素峰形校正检索技术
sesame oil
volatile compounds
gas chromatography - mass spectrometry （ GC - MS）
calibrated lineshape isotope profile search（CLIPs）
