Characteristics of Main Chemical Constituents of Flue-cured Tobacco Yunyan 87 in Guizhou Tobacco Planting Area

[Objective] To analyze main chemical components and characteristics of flue-cured tobacco Yunyan 87 in Guizhou tobacco planting area. [Method] The main chemical constituents of flue-cured tobacco Yunyan 87 in Guizhou tobacco planting area were analyzed,and were also compared with samples of flue-cured tobacco Yunyan 87 from Yunnan. [Result] The results indicated that the main chemical constituents of Yunyan 87 in Guizhou tobacco planting area were harmonious in general. The contents of total sugar,reducing sugar and the ratio of total sugar to nicotine were relatively high,while the contents of potassium were relatively low. The contents of total nitrogen,total alkaloid,chlorine,the ratio of total nitrogen to nicotine and the ratio of potassium to chlorine were medium. Among the main chemical constituents,the coefficient of variation of the ration of potassium to chlorine was the biggest,while the coefficient of variation of total sugar and reducing sugar was the smallest. The contents of total sugar,total alkaloid and the ratio of sugar to nicotine showed significant difference among different grades,while the contents of chlorine,potassium and the ratio of total nitrogen to nicotine had significant difference among different tobacco planting areas. Compared with samples of flue-cured tobacco Yunyan 87 from Yunnan,the contents of total sugar and chlorine in sample of Yunyan 87 in Guizhou planting area were significantly lower,and the ratio of potassium to chlorine was greatly higher. [Conclusion]The study can provide theoretical basis for high quality production and reasonable layout of Guizhou flue-cured tobacco Yunyan 87.