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Correlation between Nicotine Content and Smoking Quality in Flue-cured Tobacco

XIAO Shou-bin (Yongzhou Vocational and Technical College,Yongzhou 425000,China)  
A total of 756 flue-cured tobacco samples with 3 grades(B2F,C3F and X2F) selected from the main tobacco-growing areas in Hunan province were used for studying correlation between nicotine content and evaluating index of smoking quality.The results showed that the nicotine content had a linear correlation with evaluation scores of aroma quantity,offensive odor,concentration,irritation and aftertaste,and 2 or 3 powers curvilinear correlation with evaluation scores of aroma quality,strength,ash color,flavor,taste and total evaluation scores.With increasing nicotine content in tobacco leaf,the aroma quantity and concentration increased,offensive odor and irritation augmented,aftertaste went to bad.When the nicotine content in tobacco leaf was 3.2%,2.8%,1.8%,3.5%,2.5%,3.0%,the evaluation scores of aroma quality,strength,ash color,flavor,taste and total evaluation scores reach the top respectively.
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