打叶复烤各工序对烟叶糖碱比稳定性的影响

Effects of threshing and re-drying on stability of sugar-nicotine ratio of tobacco leaf

为提高打叶复烤烟叶质量的稳定性,测定了黄金叶品牌打叶复烤专线各工序(真空回潮、铺叶解把、一润、二润、梗叶分离、配叶储叶、复烤)前后烟叶的烟碱、总糖含量,以明确各工序对烟叶糖碱比稳定性的影响。结果表明:①打叶复烤后,烟叶中烟碱含量降低9.50%,变异系数由10.95%降低至2.75%,总糖含量降低9.43%,变异系数由7.42%降低至2.80%,打叶复烤前后烟碱、总糖含量差异均极显著(P<0.01);②配叶储叶工序对烟叶烟碱、糖碱比稳定性贡献最大,梗叶分离工序对烟叶总糖含量的稳定性贡献最大;③打叶复烤后,烟叶糖碱比变异系数由16.87%降低至4.15%,真空回潮工序对烟叶糖碱比的降低影响较大,配叶储叶工序对烟叶糖碱比的升高影响较大,且真空回潮和配叶储叶工序前后差异均极显著。

To improve the stability of tobacco leaf quality, the nicotine, total sugar content in Gold Enleaf brand tobacco leaves before and after threshing and re-drying(vacuum moisture regaining, spreading leaf and untie bundle,first-moistening, second-moistening, stem-leaf separation, leaf blending and storage, re-drying) were determined and the effects of each process on the stability of sugar-nicotine ratio of tobacco leaves were analyzed. The results showed that①after the threshing and re-dying process, the nicotine and total sugar content in tobacco leaves were decreased, nicotine content decreased by 9.50% with its coefficient of variation decreased from 10.95% to 2.75%, sugar content decreased by9.43% with its variation coefficient decreased from 7.42% to 2.80%. Contents differences of sugar and nicotine in tobacco leaves before and after the threshing and re-dying process were extremely significant(P<0.01).②The leaf storage process has the greatest contribution to the stability of nicotine and sugar-nicotine ratio, while the stem and leaf separation process contributes the most to the stability of total sugar content.③ The variation coefficient of sugar-nicotine ratio of tobacco leaves after the threshing and re-drying process was reduced from 16.87% to 4.15%. The vacuum moisture regaining process has a great influence on the reduction of the ratio of sugar to nicotine. The leaf storage process has a great influence on the increase of the ratio of sugar to nicotine, and the sugar-nicotine ratios before and after the vacuum moisture regaining and the leaf storage process both showed extremely significant differences.