甘肃陇南烤烟化学成分特征及可用性评价

Characteristics and Usability Evaluation of Chemical Components of Flue-cured Tobacco Leaves in Longnan Gansu

为研究陇南烤烟化学成分特征和可用性,对180个样品的化学成分特征进行分析,评价烤烟化学成分的可用性.结果表明:1)陇南烤烟总糖和钾氯比稍高,钾和氯偏低,还原糖、总氮、烟碱和糖碱比适中;2)陇南烤烟化学成分可用性指数在0. 31~0. 84之间,平均值为0. 64,在"中等"范围内;3)陇南烤烟化学成分可用性指数在等级间表现为CCUI(C2L)> CCUI(C3L)> CCUI(B2L)> CCUI(B3 L)>CCUI(X2L)> CCUI(X3L),品种间为CCUI(红大)> CCUI(K346)> CCUI(CF80),产地间为CCUI (康县)>CCUI(徽县)> CCUI(成县)> CCUI(两当县).综合分析认为,陇南烤烟化学品质处于"中等",且以康县产地为最好,红大品种最优.

To study the characteristics and usability of chemical components of flue-cured tobacco in Longnan area,the characteristics of chemical components of 180 samples were analyzed to evaluate the chemical components usability of tobacco leaves. The result indicated that: 1) The average concentration of total sugar and ratio of potassium to chlorine were slightly high while potassium and chlorine were low,and the content of reducing sugar,total nitrogen,nicotine,ratio of total sugar to nicotine was at an appropriate level. 2) The chemical component usability index of flue-cured tobacco in Longnan was between 0. 31 and 0. 84,and the average value was 0. 64 in medium level. 3) The chemical components usability index in different grades were CCUI(C2 L) > CCUI(C3 L) > CCUI(B2 L) >CCUI(B3 L) > CCUI(X2 L) > CCUI(X3 L),in different varieties were CCUI(Hongda) > CCUI(K346) > CCUI(CF80),in different areas were CCUI(Kangxian county) > CCUI(Hui county) > CCUI(Cheng county) > CCUI(Liangdang county). The research results show that the chemical quality of Longnan tobacco was in medium level with the best kangxian origin and the best hongda varieties.