摘要
【目的】研究成品烟丝致香成分与不同碳化温度间的关系。【方法】设计制作相同的成品烟丝样品,通过HS-GC-MS在不同碳化温度条件下(80、100和120℃)测定烟丝致香成分的种类,并研究两者间的相互影响。【结果】(1)成品烟丝从80℃开始碳化,120℃时碳化明显,从低温到高温,色泽由金黄色向棕褐色转变。(2)在80、100和120℃各温度条件下,平行测试的质谱峰形态基本表现一致,分别检测到18、52和81种致香成分,分子量范围为44.026~241.077 u。(3)从低温到高温,不同碳化温度下特征致香物质的数量分别为4、13和36种。【结论】随着温度的提升,致香成分的数量不断增加,其中,100℃时特征致香成分为胺类、醇类、硫化物和含氧多环类化合物,分子量40~200 u;120℃时特征致香成分为酮类、醇类、醚类和含氮多环化合物,分子量50~160 u。
[Purposes]To study the relationship between the aroma components and the different carbonation temperatures.[Methods]The same finished tobacco samples were designed and manufactured. The types of aroma components were determined by HS-GC-MS at different carbonation temperatures(80, 100 and 120 ℃), and the interaction between them was studied.[Results](1) The finished tobacco was carbonized from 80 ℃, and the carbonization was obvious at 120 ℃. From low temperature to high temperature, the color changed from golden to brown.(2) At 80, 100 and 120 ℃,the mass spectra of the parallel test were basically the same, and 18, 52 and 81 aroma components were detected. The molecular weight range was 44.026-241.077 u.(3) From low temperature to high temperature, the number of fragrant substances in different carbonation temperature was 4, 13 and 36 species respectively.[Conclusions]With the increase of temperature, the number of incense components is increasing. Among them, at 100 ℃, the characteristic aroma components included amines,alcohols and sulfides, oxygen-containing polycyclic compounds and the molecular weight ranged 40 from 200 u; at 120 ℃, ketones, alcohols, ethers and nitrogen-containing polycyclic compounds and the molecular weight ranged 50 from 160 u.
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