重庆地区烤烟主要化学成分与评吸质量分析

对重庆8个植烟县市黔江、秀山、彭水、丰都、南川、石柱、涪陵、巫溪的烤烟化学成分进行了测定,分析了化学成分的主要影响因子,并对化学成分和评吸质量进行了相关和回归分析。结果表明：从7种化学成分及其3种比值中提取出4个主因子,它们分别代表碳氮因素、钾因素、氯因素和淀粉因素4个主导性因素所产生的影响。4个主因子的累积贡献率为89.765%。其中碳氮因素起主导的因子占原变量总方差的比例为41.80%,明显高于其他因子,说明碳氮因素在化学成分中的作用最大,对烤烟品质的影响最显著。化学成分与评吸质量的回归分析表明，淀粉、糖碱比、还原糖、总糖是影响评吸质量的主要因素,还原糖与评吸质量正相关,总糖、糖碱比、淀粉与评吸质量负相关,而钾离子、氯离子、钾氯比对评吸质量的影响不显著。

Analysis between primary chemical components of flue-cured tobacco and their smoking quality in Chongqing Area

The primary chemical components of flue-cured tobacco in Qianjiang, Xioushan, Pengshui, Fengdu, Nanchuan, Shizhu, Fuling, Wuxi of Chongqing Area was determined, and factor analysis was carried out on primary chemical components, in addition, regression analysis was carried out between primary chemical components and smoking quality. Four main factors were selected from 10 primary chemical components and derivative components, which were carbon nitrogen factor, potassium ion factor, chloride ion factor and starch factor. Accumulative contribution rate of 4 main factors was 89.765%, among which carbon nitrogen factor accounted for 41.80% of original variable total variance, and was significantly higher than other three factors, which indicated that carbon nitrogen factor played the most important role in primary chemical components and showed the greatest impact on tobacco quality. The regression analysis between chemical components and smoking quality showed that starch, sugar alkali rate, reducing sugar and total sugar were main factors that affected smoking quality. Reducing sugar was positively correlated with smoking quality, and total sugar, sugar alkali rate, starch were negatively correlated with smoking quality. Potassium ion, chlorine ion and potassium chlorine rate insignificantly affected smoking quality．