Analysis Of The Yimen Flue-cured Tobacco Comprehensive Quality Assessment And Comparison With Foreign Flue-cured Tobacco Flue-cured Tobacco

Yimen country seven Tobacco counties tobacco through various statistical methods and comparison of physical properties, appearance, quality, sensory quality and chemical composition and other indicators of assignment with foreign high-quality tobacco, scoring, weight calculation,further local tobacco comprehensive quality analysis, the main conclusions are as follows:1. The appearance of the overall quality of higher degree of similarity with foreign flue-cured tobacco. The colors are lemon yellow, orange "level in the upper leaves, good maturity, the leaves loose structure, the identity of the medium or thicker oil and chroma concentrated. Yimen cigarette central part of flue-cured tobacco of the index average score higher than the upper leaves and lower leaves, in addition to the two indicators of structure, identity, and chroma of the lower part of leaves and the United States and Zimbabwe, smaller parts of the tobacco gap with other parts of the central leaves the appearance of quality and the most similar foreign quality tobacco.2. The Yimen tobacco area of upper leaves the physical characteristics of the index average is more appropriate. The thick the Yimen smoke, upper leaves, fill the value of moderate foliage density, higher stem ratio. Moderate thickness of the middle leaves of the Yimen tobacco area, the fill value is generally higher moisture content of the tobacco leaf physical characteristics. Fill value of the lower leaves and stem higher rate of single leaf weight is very low, and tobacco leaf physical traits to comprehensive than the relative low in the upper part of flue-cured tobacco, tobacco quality significantly lower than the foreign the Yimen smoke flue-cured tobacco leaf thickness, tensile strength was significantly higher than in the United States and Zimbabwe tobacco, leaf density, stem ratio, and equilibrium moisture content of the three indicators compared with the same parts of the foreign tobacco is closer to a single leaf weight compared with foreign tobacco, significantly lower than the foreign high-quality tobacco.Physical properties of Yimen City Tobacco counties using cluster analysis can be divided into three categories, I class consists of two counties were in Longquan and Pubei,c lass leaf thickness and leaf density is moderate, the fill value is low, the highest tensile strength and equilibrium moisture content, slightly higher rate of stem, leaf weight moderate physical characteristics of the tobacco best, can be used as the main ingredient of tobacco of the cigarette formulause; Part â…¡ class was Liujie, such tobacco filling power and stem ratio, low tensile strength and leaf density, equilibrium moisture content, a singleleaf weight minimum, the general quality of such tobacco, filling and good elasticity can be used as accessories smoke of the tobacco formulation; class III consists of four towns, were Tongchang, Xiaojie, Shijie and Luzhi, this type of tobacco filling powerand anti-tension moderate, foliage density and single leaf weight, equilibrium moisture content and stem ratio minimum.3. Chemical composition of tobacco leaves in Yimen is more appropriate, the total sugar content of the upper leaves compared to other parts of the lower content of reducing sugar at a medium level, total sugar and nicotine content in a higher level of potassium ion content in a high-quality tobaccowithin the appropriate range, the low content of chloride ions. Yimen cigarette central part of the chemical composition of leaves is the most appropriate relative to the other two parts of the total sugar and reducing sugar content in the highest value, moderate nitrogen and nicotine content, the content of potassium and chloride ions in a high-quality tobacco within the appropriate range, the three measure of the ratio is more moderate. Yimen cigarette central part of leaf chloride ion content was significantly higher than the Zimbabwe tobacco, sugar alkali ratio the Yimen smoke area was significantly higher than the United States and Zimbabwe tobacco, the ratio of the nitrogen base to the highest the Yimen smoke District content.Factor analysis on the the Yimen tobacco chemical composition, access to four main factors, the total sugar-nicotine-K factor the chemical composition of the upper flue-cured tobacco constitute the greatest impact, the Yimen smoke District Central Tobacco chemical composition by the carbohydrate factor, tobaccofactor of alkali, nitrogen base factor, sugar alkali-K factor, which carbohydrate factors impact on the composition of the chemical composition of the middle of flue-cured tobacco, reducing sugar-chlorine factors affect the lower flue-cured tobacco chemical composition.4. Content of the Yimen flue-cured tobacco, the upper leaves of tobacco neutral aroma components compared between the categories followed by:carrot potato degradation products of neophytadiene> class> class CYPRESS alkane degradation products of Maillard reaction products> aromaticdegradation products. Diene content of the aroma components of the highest of which are planted, accounting for more than90percent of the total aroma components, the amount of material on the tobacco aroma with key critical effect, Yimen smoke District Central neutral aroma components of tobacco content between class size and the upper leaves. The Yimen smoke different parts of the tobacco aroma substances in total compared to the content of middle leaves, followed by content of upper leaves, lower leaves of the lowest levels, the aroma of the poorest quality. Neophytadiene content of the more obvious differences between the three parts of the degradation products of carotenoids in the difference between the middle leaves and upper leaves.Yimen Flue-27kinds of neutral aroma components of principal component analysis,6characteristic roots greater than1, the cumulative variance contribution rate of90.165%, carotenoids and class CYPRESS alkane aroma constituents of the first The main ingredients are a great contribution to rates, the first principal component,6-methyl-5-heptene-2-ol factor loadings highest factor loading, followed by oxidation of alcohols-a-violet0.862,3-for the0.851, indicating that the aroma composition of these two play a major role, the quality of the tobacco aroma the Yimen smoke District also play an important role.5. The analysis results show that the assignment Yimen fragrant qualities of tobacco area, the amount of aroma, odor, irritation and aftertaste and other five indicators, the composite score of of Yimen different tobacco interval the upper leaves are as follows: Liujie> Longquan> Tongchang> Xiaojie> Shijie> Luzhi> Pubei. Compared to middle leaves:composite score Longquan, Liujie, followed by a minimum of Shijie. The lower leaves of the composite score were as follows:Longquan> Liujie> Xiaojie> Tongchang> Shijie> Pubei> Luzhi.Yimen Tobacco Leaf and sensory quality of the correlation analysis, a negative correlation between the temperament of fragrant with the aroma of the amount of odor, irritation and aftertaste, which mixed gas and irritating level aroma amount reached a significant level;was negatively correlated with the mixed gas and aftertaste was positively correlated with irritating; mixed gas with a pungent correlation reached a significant level.6. Principal component analysis set weight, followed by the similarity analysis the Yimen smoke different producing areas in different parts of the flue-cured tobacco chemical composition and Zimbabwe, with parts of the flue-cured tobacco analysts believe that the upper leaf chemical indicators Xiaojie, Longquan, Tongchang, and Zimbabwe is most similar to parts of the tobacco; central Ye chemical indicators to Pubei, Shijie, Xiaojie, Tongchang, and Zimbabwe middle leaves is similar.Analysis the upper leaves of neutral aroma components of Shijie, Liujie, Xiaojie with Zimbabwe and parts of the similarity analysis of the the Yimen smoke different producing areas in different parts of the flue-cured tobacco neutral aroma components and Zimbabwe with the parts of the flue-cured tobaccomost similar to tobacco; central Ye neutral aroma components the Longquan, Shijie, Liujie and Zimbabwe in middle leaves more similar.7. Calculation shows that, through the comprehensive quality of the tobacco between the various parts of the Yimen Flue-tobacco of the upper leaves, the composite index scores in descending order Longquan, Xiaojie, Liujie, Pubei, Tongchang, Shijie, Luzhi; central Ye composite index score in descending order the Longquan, Liujie, Xiaojie, Tongchang, Pubei, Shijie, Luzhi. The lower leaves of the composite index scores in descending order Longquan, Liujie, Xiaojie, Tongchang, Shijie, Luzhi.