2种古井贡酒中挥发性成分的研究

Research on Volatile Compounds in 2 Kinds of Gujinggong Liquor

采用不同溶剂,通过液液萃取法结合气相色谱-质谱联用技术分析古井贡酒中的挥发性成分,并通过标准品、NIST 11谱库检索和保留指数3种方法进行定性。结果表明:不同极性溶剂萃取出来的化合物不同,正戊烷与乙醚、二氯甲烷相比,对芳香族化合物、烷烃类化合物以及含硫化合物萃取效果较好,二氯甲烷相较于正戊烷、乙醚,对杂环类化合物萃取效果较好。古井贡酒中共定性出188种挥发性成分,包括酯类化合物74种、醇类化合物26种、芳香族化合物25种、酸类化合物20种、烃类化合物14种、醛酮类化合物8种、含硫化合物8种、缩醛类化合物7种、杂环类化合物4种、内酯类化合物2种。其中167种化合物通过标准品比对进行准确定性。

The volatile compounds of Gujinggong liquor were analyzed by liquid-liquid extraction coupled with GC-MS and identified by comparison with authentic standards, NIST 11 library and retention index. Different compounds were extracted by using different organic solvents with various polarities. Compared with diethyl ether and dichloromethane, n-pentane showed better extraction effect for aromatic com- pounds; alkanes and sulfur-containing compounds, and diehloromethane showed better extraction effect for heterocyclic compounds. A total of 188 volatile compounds were determined in Gujinggong liquor, including 74 esters, 26 alcohols, 25 aromatic compounds, 20 acids, 14 alkanes, 8 aldehydes and ke- tones, 8 sulfur-containing compounds, 7 acetals,4 heterocyclic compounds, and 2 lactone compounds. About 167 compounds of them were identified by pure standard.