烤烟常规化学成分与氢氰酸关系研究

为了明确氢氰酸释放量与烟叶常规化学成分的关系,本研究以全国主要烤烟区域的代表性等级烟叶为材料,运用数理统计相关和回归方法分析了两者之间的关系。结果表明:烟叶中的总氮含量(x_1)、总糖含量(x_2)、钾氯比(x_3)对主流烟气中的氢氰酸释放量(y)有重要影响,回归方程为:y=1.98+120.08x_1+1.50x_2-3.20x_3,其中总氮、总糖含量与氢氰酸释放量呈正相关,钾氯比与氢氰酸释放量呈负相关。因此,在烟叶生产或叶组配方中可通过生产或选择钾氯比高、总氮和总糖含量相对较低的烟叶降低氢氰酸释放量。

Relationship between HCN Release and Chemical Components in Flue-cured Tobacco Leaf

The relationship between HCN release and chemical components in flue-cured tobacco leaf was analyzed by the correlation and liner regression statistics methods,with the typical grade tobacco in major flue-cured tobacco areas as materials. The results showed that the release amount of HCN( y) was affected by total nitrogen ( x1 ), total sugar ( x2 ) and potassium/chlorine ( x3 ) in flue-cured tobacco leaf. The content of total nitrogen and sugar was positively related with the release amount of HCN,but the ratio of potassium/chlorine was negatively related with it. Based on above analysis,regression equation could be obtained and expressed such as y=1. 98 +120. 08x1 +1. 50x2 -3. 20x3. So tobacco leaves with higher potassium/chlorine,and lower total nitrogen and sugar could be chosen to decrease the release amount of HCN in the tobacco production and formula.