不同产地烤烟质体色素降解产物含量与烟叶质量的相关性

Correlation between content of aroma components degraded from chromoplast pigment and smoking quality of flue-cured tobacco from different producing areas

以四川会理、重庆武隆、湖北保康、河南汝阳、山东诸城5个烤烟产地的C3F烟叶为材料,对烤烟中质体色素降解产物的含量、质体色素降解产物含量占致香物质总量的比例及其与评吸质量的关系进行分析比较。结果表明:烟叶中致香物质总量、质体色素降解产物、叶绿素降解产物和新植二烯含量均随产地纬度的增高而呈下降的趋势,其中以四川会理和重庆武隆的含量最高,以山东诸城的含量最低;新植二烯、巨豆三烯酮、金合欢基丙酮、β–大马酮、植醇、β–紫罗兰酮含量在致香物质中所占比例较大;相关分析表明,大部分质体色素降解产物的含量和在致香物质中所占比例与评吸指标呈正相关,但香叶基丙酮、二氢猕猴桃内酯、金合欢基丙酮B含量与评吸指标呈负相关,巨豆三烯酮、香叶基丙酮等降解产物可能是彰显烟叶特色的表征物质;烟叶致香物质与评吸质量之间的关系较复杂,其内在品质具有多样性和差异性。

Comparative analysis on contents and proportions of aroma components degraded from chromoplast pigment and their relationships with smoking quality were conducted on flue-cured tobacco （C3F） leaves produced in Sichuan Huili, Chongqing Wulong, Hubei Baokang, Henan Ruyang and Shandong Zhucheng. The results showed that the contents of total aroma constituents, aroma components degraded from chromoplast pigment and chlorophyll, neophytadiene in the tobacco leaves displayed a descending trend from south to north with the highest contents identified in the leaves from Sichuan Huili and Chongqing Wulong and the lowest from Shandong Zhucheng. Among the aroma components degraded from chromoplast pigment, neophytadiene, megastigmatrienone, farnesene, β-damascenone, phytol and β-ionone showed higher proportions. Correlation analysis indicated that： among the aroma components degraded from chromoplast pigment, contents and proportions of the most components had positive correlation while geranylacetone, dihydro actinidiolide and farnesene B had negative correlation with smoking quality. Aroma components such as megastigmatrienone and geranylaceton were possibly the indicators that featured the flavor of flue-cured tobacco. The relationship between aroma components and smoking quality were complex, and diversity and difference existed in the internal quality of flue-cured tobacco leaves.