3种萃取溶剂对赤霞珠葡萄酒香气成分GC-MS分析的影响

Effects of Three Solvents on Analysis of Aroma Components in Dry Wine of Cabernet Sauvignon by GC-MS

采用3种不同萃取溶剂,通过液液萃取并结合GC-MS分析葡萄酒香气成分。结果表明,3种溶剂萃取的分析结果都有良好的重复性。二氯甲烷萃取葡萄酒香气物质的量最高。用二氯甲烷共检测出64种香气物质,而乙醚∶戊烷(1∶1)检测出35种,乙醚∶戊烷(2∶1)检测出42种。二氯甲烷能够萃取大量的酯类物质,但对醇类物质的萃取较差;乙醚∶戊烷(2∶1)萃取葡萄酒中醇类物质的比例较大,但对酯类物质的萃取较差。对比结果显示,乙醚∶戊烷(1∶1)和乙醚∶戊烷(2∶1)比二氯甲烷对赤霞珠干红葡萄酒香气分析结果影响大,二氯甲烷更适合应用于赤霞珠干红葡萄酒香气的GC-MS分析中。

Different solvents were compared to assess their effects on the analysis of aroma compounds in dry wine of Cabernet Sauvignon by GC-MS.Aroma components were extracted with three different solvents and analyzed by GC-MS.The result showed that three solvents led to higher repeatability for aroma components identified in dry wine of Cabernet Sauvignon.The total weight of the aroma components extracted by dichloromethane was the highest in three solvents.64 components were identified by dichloromethane,35 components were identified by diethyl ether-n-pentane（1∶1）,and 42 components were identified by diethyl ether-n-pentane（2∶1）.Esters were largely extracted by dichloromethane from dry wine of Cabernet Sauvignon,but alcohols were slightly extracted by dichloromethane;alcohols were largely extracted by dichloromethane from dry wine of Cabernet Sauvignon,but esters were slightly extracted by diethyl ether-n-pentane（2∶1）.The results of comparison showed that diethyl ether-n-pentane（1∶1） and diethyl ether-n-pentane（2∶1） have greater effect on analysis of aroma components in dry wine of Cabernet Sauvignon,compared with dichloromethane,dichloromethane is greater solvent to analyze aroma components in dry wine of Cabernet Sauvignon by GC-MS.