沂蒙丘陵生态区烤烟化学成分与感官质量的相关分析

为明确沂蒙丘陵生态区蜜甜焦香型烤烟化学成分对感官质量的影响,选取2020年山东潍坊、临沂、日照产烟区176份典型代表性烤烟样品（包括下部烟X2L、X3L、X2F、X3F,中部烟C2F、C3F、C2L、C3L,上部烟B2F、B3F、B2L、B3L）,进行常规化学成分及感官质量指标的统计分析及相关性分析。简单相关分析显示,燃烧性与总烟碱和两糖差分别呈显著和极显著负相关关系,与淀粉、还原糖和钾含量分别呈显著和极显著正相关关系;灰分与还原糖和氯、两糖差均表现为极显著负相关关系,与淀粉呈极显著正相关关系;刺激性与氯呈显著负相关关系。典型相关分析显示,总烟碱与浓度、劲头呈正相关,氮碱比与浓度、劲头呈负相关,氯与刺激性、余味呈负相关。综上,总烟碱、氮含量、氯含量是影响沂蒙丘陵生态区烤烟感官质量的关键因素。

Correlation Between Chemical Compositions and Sensory Quality of Flue-cured Tobacco in Hilly Ecological Region of Yimeng

To study the relationship between chemical composition and sensory quality of tobacco leaves of Yimeng hilly ecological region with honey sweetness and burnt flavor, 176 flue-cured tobacco samples from tobacco-growing areas of Weifang, Rizhao and Linyi in Shandong Province were selected as typical representative samples, including lower tobacco leaves X2L, X3L, X2F and X3F; middle tobacco leaves C2F, C3F, C2L and C3L; upper tobacco leaves B2F, B3F, B2L and B3L, and the conventional chemical compositions and sensory quality indexes were statistically analyzed. Simple correlation analysis showed that tobacco combustion had significantly negative correlation with total nicotine and extremely significantly negative correlation with the difference between total sugar and reducing sugar, and significant or extremely significant positive correlation with starch, reducing sugar and potassium. In addition, the ash content had significantly negative correlation with reducing sugar, chlorine and the difference between total sugar and reducing sugar, and extremely significantly positive correlation with starch. Irritation was significantly negatively correlated with chlorine. The canonical correlation showed that total nicotine was positively correlated with concentration and smoking strength. Nitrogen/nicotine was negatively correlated with concentration and smoking strength. Chlorine was negatively correlated with irritation and aftertaste. Therefore, total nicotine, nitrogen content and chlorine content are the key factors affecting the sensory quality of flue-cured tobacco in Yimeng hilly ecological region.