Abstract:

The difference of chemical components of flue-tobacco leaf were studies by detecting total sugar, reducing sugar, nicotine, total nitrogen, potassium and chlorine of 54 samples with 3 grades(B2F,C3F,X2F) from the typical tobacco-growing counties(Ningxiang,Ningyuan,Sangzhi) of Hunan Province. The results showed that: (1)The average concentration of total sugar, reducing sugar and chlorine in different counties was as follows Ningyuan＞Ningxiang＞Sangzhi; the total nicotine was as follows Sangzhi ＞Ningxiang＞Ningyuan; the total nitrogen was as follows Sangzhi＞ Ningyuan＞Ningxiang; the potassium was as follows Ningxiang＞Ningyuan＞Sangzhi.(2) The concentration difference of total sugar, reducing sugar, total nicotine, chlorine and potassium in different ecological areas were significant; the difference of chemical components of flue-tobacco leaf of Xiangnan and Xiangxibei was bigger than the difference of Xiangnan and Xiangzhong.