药香型董酒的香气成分分析

Analysis of Aroma Components in Chinese Herbaceous Aroma Type Liquor

应用液液萃取将药香型董酒分成中性/碱性与酸性/水溶性组分,用硅胶柱将中性/碱性组分进一步分离,采用戊烷-乙醚混合液(体积比分别为100∶0、95∶5、90∶10、80∶20、70∶30和50∶50)和甲醇洗脱后按极性分离得到7个组分,再对各组分的香气化合物进行GC-O和GC-MS分析。结果表明药香型董酒中主要的香气物质是挥发有机酸、酯类、萜烯类、醇类、芳香族类、酚类、醛酮类以及硫化合物等。香气强度较大的物质是丁酸、己酸乙酯、己酸、二甲基三硫、丁酸乙酯、2-苯乙醇、3-甲基丁酸、4-甲基苯酚、4-甲基愈创木酚、β-大马酮、戊酸乙酯、(E,Z)-2,6-壬二烯醛、(-)-龙脑、小茴香醇等物质,这些物质是药香型董酒的主要香气成分。

Aroma compounds in Chinese herbaceous aroma type liquor,Dongjiu,were investigated with normal phase chromatography followed by gas chromatography-olfactometry(GC-O).The dongjiu liquol sample was fractionated into water-acidic and neutral-basic fractions.The neutral-basic fraction was further separated into seven fractionations,using silica gel normal phase chromatography(pentane-diethyl ether of 100∶0,95∶5,90∶10,80∶20,70∶30,50∶50,and 100% methanol).The results showed that dongjiu liquor aroma was mainly contributed by fatty acids,esters,terpenoids,alcohols,aromatic compounds,phenols,sulphur compounds,ketones and aldehydes.According to the osme value,butanoic acid,ethyl hexanoate,hexanoic acid,dimethyl trisulfide,ethyl butanoate,2-phenylethyl alcohol,3-methylbutanoic acid,4-methylphenol,4-methylguaiacol,β-damascenone,ethyl pentanoate,(E,Z)-2,6-nonadienal,(-)-borneol and fenchol had the high osme values.Those were the most important aroma compounds in dongjiu liquor of Chinese herbaceous aroma type liquor.