慕萨莱思中呋喃酮、5-甲基糠醛和3-甲硫基丙醇的香气阈值及二元协同作用

Aroma Threshold and Binary Synergy of Furanone,5-Methylfurfural and 3-Methylthiopropanol in Msalais Wine

采用3点选配法确定慕萨莱思重要香气物质5-甲基糠醛(5-methylfurfural,5-MF)、呋喃酮(furanone,DMHF)和3-甲硫基丙醇(3-methylthiopropanol,3-MTP)阈值,并运用S型曲线和σ-τ图分析其二元互作关系,以期为慕萨莱思产品风味控制提供参考。5-MF、DMHF、3-MTP在乙醇体积分数12%模拟葡萄酒中阈值分别为190.000、45.000μg/L和382.000μg/L,在乙醇体积分数12%的慕萨莱思脱香液(7.4~7.9°Brix)中阈值分别为97.580、798.950μg/L和196.533μg/L。经研究发现糖度7.4~7.9°Brix和糖度6.4~7.9°Brix慕萨莱思脱香液(12%乙醇)对3种香气阈值的影响较小,8%、10%、12%、14%乙醇体积分数慕萨莱思脱香液(糖度7.4~7.9°Brix)中3种香气的阈值无明显差异。运用S型曲线和σ-τ图分析在12%乙醇的模拟葡萄酒和12%乙醇的慕萨莱思脱香液(糖度7.4~7.9°Brix)中3种香气的二元混合溶液均呈加成作用。

In this study,the three-alternative forced-choice(3-AFC)method was used to determine the odor thresholds of three important aroma compounds in Msalais wine including 5-methylfurfural(5-MF),2,5-dimethyl-4-hydroxy-3(2H)-furanone(DMHF)and 3-methylthiopropanol(3-MTP),and the S-curve and theσ-τplot were used to analyze the binary interaction of these compounds.The threshold values of 5-MF,DMHF and 3-MTP in simulated wine with an alcohol content of 12%were 190.000,45.000 and 382.000μg/L,respectively,and those in dearomatized Msalais wine with 12%alcohol content(sugar contents of 7.4–7.9°Brix)were 97.580,798.950 and 196.533μg/L,respectively.In addition,it was found that sugar contents of dearomatized Msalais wine(with 12%alcohol content)in the range of 7.4–7.9°Brix and 6.4–7.9°Brix had little effect on the thresholds of the three aroma compounds.There was no significant difference in the thresholds of these aroma compounds in dearomatized Msalais wine(with sugar contents of 7.4–7.9°Brix)with 8%,10%,12%and 14%alcohol contents.The binary mixtures of these compounds in simulated wine with 12%alcohol content and in dearomatized Msalais with sugar contents of 7.4–7.9°Brix and 12%alcohol content showed additive effects in the S-curve and theσ-τplot.