Relationships between sensory quality and main chemical components in different leaves of flue-cured tobacco

161 samples of flue-cured tobacco leaves from main tobacco-growing areas of China were used as materials to investigate the relationship between sensory quality and main chemical components in different leaves flue-cured tobacco.The results indicated that the chemical components was suitable in different leaves flue-cured tobacco.The smoking quality was good and the CV of total scores in smoking evaluation was low.The chemical components and total scores in smoking evaluation reached the significant level in different leaves.The relationship between sensory quality and main chemical components was analyzed with grey incidence analysis.The maximal factors influencing total scores in smoking evaluation were the chlorine,the nicotine,the reducing sugar.The nicotine content increased at first then decreased along with increasing of total scores in different leaves.The middle leave of reducing sugar content increased along with increasing of total scores.The potassium content and ratio of potassium/chlorine had positive effects on the total scores.The chlorine content had negative effects on the total scores.