The Quality Characteristics And Comprehensive Evaluation Of Flue-cured Tobacco In Panzhihua

Using representative samples of flue-cured tobacco as materials in the main tobacco producing areas of Panzhihua during 2007 to 2009. the paper identified its appearance quality, chemical components, sensory smoking and used various statistical analysis methods to evaluate its quality characteristics synthetically, which aimed to light the quality characteristics of tobacco leaves in Panzhihua and provide characteristic high-quality tobacco for the Chinese tobacco cigarettes. The result showed that:1. Appearance quality:Panzhihua's upper leaves were the main color of lemon yellow, light orange, orange and had high maturity, leaf's structure still loose, identity slightly thick to medium, reflecting strong oil, appearance with oil lubrication, good flexibility, good uniformity, full extent almost good, purity in general. Middle leaves were the main color of light orange and had relatively high maturity, leaf's structure loose, identity medium, mostly with oil, flexibility medium, most of tobacco leaves basically uniformity and full extent almost good. Lower leaves often had high maturity and leaf's structure loose, identity slightly thin to medium, oil to be slightly or some, good uniformity and saturation, better flexibility and toughness and most of the samples were in a better quality grade. In the three tobacco counties of Panzhihua, it is the highest scores of appearance quality in Miyi county, greater volatility of appearance quality in Renhe county and relatively steady of appearance quality in Yanbian county.2. Chemical components:The main chemical composition of upper samples such as sugar, reducing sugar, total alkaloids, ratio of nitrogen and nicotine, ratio of potassium and chlorine average value was basically in the appropriate range; ratio of total sugar and alkaloids was higher than average value. The main chemical composition of upper samples such as total sugar, reducing sugar, total alkaloids, ratio of sugar and alkaloids, ratio of potassium and chlorine average value was basically in the appropriate range; ratio of sugar and alkaloids was high; chlorine and ratio of potassium and chlorine had relatively large range; Lower leaves total sugar, reducing sugar, total alkaloids, ratio of sugar and alkaloids, ratio of potassium and chlorine average value was basically in the appropriate range; ratio of sugar and alkaloids was higher and chlorine was lower, the content of chlorine had a large change. In the three tobacco counties of Panzhihua, the coordination of chemical composition was better in Miyi county tobacco leaves.3. Sensory smoking:The flavor of the upper leaves was light aside medium or medium aside light, characteristic nuance fresh and sweet, slightly better on the aroma, quantity of aroma enough or on the upper side, the momentum medium, the concentration slightly heavy, smoke more transparent and slightly delicate; a slight odor, slight throat stimulation, aftertaste still comfortable and clean, sweet above average; can be used as the main ingredient of thirdly class cigarettes. Most of the samples were in a good quality grade. Renhe county and Yanbian county upper leaves'sensory smoking were more stable; Renhe county upper leaves were the best quality in sensory and followed by Miyi. The flavor of the middle leaves was light aside medium or medium aside light, characteristic nuance fresh and sweet, slightly better on the aroma, quantity of aroma enough or on the upper side, the momentum medium, the concentration slightly heavy, smoke more transparent and slightly delicate, slight throat stimulation, odor, aftertaste still comfortable, slightly spicy mouth feel, sweetness strong, middle leaves could be used as the second and third main ingredient of cigarettes price class; most samples were in good quality grade. Renhe county, Miyi county and Yanbian county middle leaves sensory smoking were very stable. The flavor of the lower leaves was light aside medium, characteristic nuance as the fresh and sweet, strength smaller, more gas through, more delicate, lower leaves could be used as the second and third class cigarettes. Most samples were in the middle or lower middle-grade quality grade.4. Industrial evaluation:The leaves of Panzhihua had good maturity, leaf structure still loose to loose, identity, oil and color better, the overall appearance of the quality basically met the industry requirements; soluble sugar content was slightly higher, the middle and upper part of tobacco alkaloids and total nitrogen content was more appropriate, chloride ion content was too low, the overall chemical composition was reasonable; style features was clear or clear sided central, some samples had a stronger sense of elegant, aroma was still there to meet, to have a little mixed gas, the concentration of medium, smoke more soft and delicate, medium strength, irritation slightly, a few samples had a more obvious sense and fluid sense of sweet, burning stronger, better compatibility, the overall industrial availability was higher.5. As Panzhihua tobacco, the chroma had the greatest impact on the sensory quality in all indicators and status had the greatest impact on the quality and quantity of aroma, both them played a positive role. At the same time, Panzhihua leaf color played a negative role on the sensory quality of smoking. The ratio of total sugar to nicotine and ratio of nitrogen to nicotine in Panzhihua tobacco had the greatest impact on the quality of sensory smoking, and the effects were negative. Panzhihua tobacco should be noted to prevent the production of tobacco leaves with too deep color, improve leaf chroma, the leaves tend to moderate. In production of Panzhihua tobacco should focus on improving the coordination of chemical components, especially the two indicators of sugar and nitrogen base nicotine.