Quality Characteristics and Stability Analysis of C3F Flue-Cured Tobacco Leaves in Jinggu Base of Yunnan
By analyzing the internal and external quality of C3F tobacco leaves in Jinggu Base,the quality characteristics and stability of tobacco leaves were mastered,so as to provide technical support for improving the flue-cured tobacco quality in the base.The C3F tobacco leaves from 2020 to 2022 in five representative towns of Yongping,Weiyuan,Mengban,Banpo and Bi'an in Jinggu Base were collected respectively.Through the analysis of the appearance quality,physical properties,chemical components and sensory quality of tobacco leaves,the main characteristics of C3F tobacco leaves in Jinggu Base were preliminarily clarified.C3F tobacco leaves showed orange color,ripe maturity,open structure,medium body,oily component and strong color intensity.The physical characteristics such as length,width and weight of single leaf were moderate.The chemical components showed high sugar,and low reducing sugar/total sugar ratio,and chlorine and potassium/chlorine ratio varied greathy between years.The style characteristic was fen-flavor obvious.The comprehensive score of appearance and sensory quality increased year by year.In addition to the breaking stress,the variation of physical properties was small.The chemical components had little variation,except for chlorine and potassium/chlorine ratio.The quality stability of samples in different years and regions was good.The total sugar content of tobacco leaves should be controlled,and the content of reducing sugar should be appropriately increased to improve the quality of tobacco leaves.The dynamic monitoring of chlorine in soil and tobacco leaves should be strengthened in some tobacco planting areas.In some areas with low chlorine in soil and tobacco leaves,accurate chlorine supplementation should be carried out to stabilize the chlorine content in tobacco leaves.
Tobacco leavesQuality characteristicsAppearance qualityPhysical propertiesChemical componentsSensory qualityStabilityTobacco leaf base of Jinggu
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