Study On Division Of Tobacco Quality In Pan-xi Region

In this article, in order to evaluate tobacco quality in a scientific, accurate and complete way and provide a theory basis for the cigarette industrial enterprise to selected tobacco material reasonably,the state of appearance quality,chemical composition and sensory quality were analyzed,then otherness analysis of tobacco in Pan-xi region was taken from different part,locale and varieties,the quantitative relation of appearance quality,chemical composition and sensory quality was discussed by methods of principal component analysis and Cluster analysis. Evaluation system of tobacco quality was established focusing on the analysis of quality characteristics of flue-cured tobacco with different aromas. The principal conclusions as follows:1. The comprehensive evaluation of tobacco quality in Panxi tobacco-growing areasThe tobacco leaves in Panxi tobacco-growing areas had good overall evaluation of high appearance quality with good maturity, plenty oil, loosest or looser leaf structure, orange or lemmon color, Part body and chroma of the appearance quality of tobacco leaves was closer to Zimbabwe, but for the other indexes, there was still a gap between Panxi and Zimbabwe tobacco-growing areas.The contents of total sugar, reducing sugar and the ratio of total sugar to nicotine of flue-cured tobacco in Panxi were higher. The contents of nicotine, chlorine, K/CL, total nitrogen and the ratio of total nitrogen to nicotine were closer to Zimbabwe, and were basically in suitable ranges. Especially, the nicotine content (1.74%) of lower leaves in Liangshan was superior to Zimbabwe. The content of chlorine and potassium was lower than Zimbabwe. The whole content of chemical composition for tobacco leaves was suitable, but compared with Zimbabwe, there still has a gap.The flue-cured tobacco leaves in Panxi was with nicer flavor and rich aroma, but the aromas types was not obvious. The variation coefficient of smoking score in different stalk positions was lower and less than 5%, so the sensory quality of flue-cured tobacco leaves in different sampling spots was similar. The score of aroma quality, aroma volume, pungent of part tobacco samples in Panxi was closer to Zimbabwe, but there had a marked difference on taste, and offensive odor, and the ash was worth than Zimbabwe. Overall the tobacco quality in Panxiarea was already close to Zimbabwe especially for cutters.2. Difference analysis of PanXi tobacco qualityAppearant quality of PanXi tobacoo were significant different by stalk position except in maturity and color. Appearant quality between variety were significant different.Chemical compositions were significant different between stalk positon except in chlorine concentration, especially in total alkaloid, total nitrogen, total sugar to alkaloid ratio,potassium to chlorine ratio and nitrogen to alkaloid ratio were significant different. Chemical composition between variety were significant different in total alkaloid, total sugar to alkaloid ratio, chlorine, nitrogen to alkaloid ratio, other chemical composition were not significant with each other. Smoking score between stalk position of PanXi tobacco were significant different. Most of smoking score were significant different, partial smoking score were not significant different, in aroma quantiry, taste and irritation between YunYan85 and YunYan87 were not significant different..3. similarity analysis of Panxi tobacco qualityApparent quality, chemical composition and smoking quality of tobacco samples in 2009 of PanXi area were analyzed by DPS(Data Processing System) analyze software to find the cluster trend of samples78. The results shows that:in the similarity analysis of apparent quality, chemical composition and smoking quality three countys are always in the same group.Through three cluster analysis the county in the first group is :BuTuo county(YunYan85,B2F),BuTuocounty(YunYan85,X2F),DeChangcounty(YunYan85,B2F),DeChangcounty(YunYan85,C3F),DeChangcounty(YunYan85,X2F),GanLuocounty(HongDa,B2F),GanLuocounty(HongDa,C2F),GanLuoconty(HongDa,X2F),HuiDongcounty(YunYan85,B2F),HuiDongcounty(YunYan85,C3F),HuiDongcounty(YunYan85,X2F),HuiLicounty(YunYan85,B2F),HuiLicounty(YunYan85,X2F),MeiGucounty(YunYan85,X2F).Through three cluster analysis the county in the second group is:MianNingcounty(YunYan87,C3F),NingNancounty(YunYan85,X3F),PuGecounty(YunYan85,X3F),XiChangcounty(YunYan87,C2F),XiChangcounty(YunYan87, X2F),XiDe county(YunYan 85 X2F).The places appeared three times in the second area of clustering were: Liangshan city Yanyuan county(yunyan85 B2F), liangshan city zhaojue county(yunyan85 B2F), liangshan city zhaojue county(yunyan85 X2F), Panzhihua city Miyi county(yunyan87 B2F), Panzhihua city Miyi county(yunyan87 C3F), Panzhihua city Miyi county(yunyan87 X2F), Panzhihua city Renhe district(yunyan85 B2F), Panzhihua city Renhe district(yunyan85 C3F), Panzhihua city Renhe district(yunyan85 X2F), Panzhihua city Yanbian county(yunyan87 B2F), Panzhihua city Yanbian county(yunyan87 C3F), Panzhihua city Yanbian county(yunyan87 X2F).The similarity analysis of appearance quality, chemical composition and sensory quality of upper, middle, lower leaves of 2009 tobacco sample in Panxi district could divide three areas in appearance quality, chemical composition and sensory quality, the specific inner reason of division still needed further deep analysis. Totally speaking, most producing areas of Panxi district had a good appearance quality and sensory quality, chemical composition was coordinate, the comprehensive quality of tobacco leaves in Panxi district was good, and had a balanced development between years.