Relationship between potassium content of flue-cured tobacco leaves and main volatile aroma components as well as sensory evaluation | 烤烟钾含量与主要挥发性香气物质及感官质量的关系分析

Chinese. 以四川主产烟区40份烤烟样品为材料，研究了烟叶钾含量与主要挥发性香气物质及感官质量的关系．结果表明，四川烟区烤烟钾含量为（19．36±4．53）g・kg. 1，呈现出下部叶〉中部叶〉上部叶的趋势；对烤烟钾含量进行聚类分析，表明烤烟钾含量与主要挥发性香气物质含量之间存在一定的内在联系，高钾类烟叶的新植二烯、类胡萝卜降解产物、芳香族氨基酸降解产物、美拉德反应产物含量和挥发性香气物质总量均明显高于中钾类、低钾类烟叶，而类西柏烷降解产物含量在类群间的差异不显著；当烤烟钾含量为10-35g・kg. 1时，钾含量与香气质、香气量、余味、燃烧性和评吸总分均存在显著的回归关系，但与杂气、刺激性和灰色的回归关系则未达到显著水平．[著者文摘]

English. 40 flue-cured tobacco leaf samples were collected in Sichuan Province. Contents of potassium and main volatile aroma components of tobacco leaves were determined, and their sensory scores were evaluated. The results showed the potassium content of flue-cured tobacco leaves in Sichuan tobacco-growing areas was（ 19.36 ± 4.53 ） g・kg. 1, Showing the order of lower leaf 〉 middle leaf 〉 upper leaf. The cluster analysis indicated that there was close relationship between potassium content and main volatile aroma components. The group with the highest content of potassium also had the highest contents of neoplytadiene, products degraded by carotene, products of aromatic amino, products of Maillard reaction and total main volatile aroma components, and was much higher than the other two groups with both medium and lowest contents of potassium ; content of products degraded by cembrane, however, did not show significant difference among the three groups. When the content of potassium of flue-cured tobacco leaves changed from 10 -35 g・kg. 1, there were significant regression relationship between potassium content and quality of aroma, volume of aroma, after taste, combustibility as well as total score,respectively. But the regression relationships between potassium content and undesirable taste, biting taste as well as ash were not significant at 5% level.