| 摘要: |
| 【目的】研究烘烤过程中密集烤房和普通烤房内气体成分变化的差异，探讨其原因及对烟叶质量的影响。【方法】以烟株中部烟叶为试验材料，参照三段式烘烤工艺烘烤，利用气体分析仪测定烘烤过程中关键温度点密集烤房和普通烤房2种烤房内气体成分的变化。【结果】烘烤过程中，2种烤房内O2体积分数和O2/CO2均呈现出先降低后升高的趋势，且在各温度点均未达到显著性差异。CO2体积分数和O3含量均呈现出先升高后降低的趋势，密集烤房中CO2气体分数变化较为剧烈，且在42 ℃止显著高于普通烤房；在38 ℃起、止密集烤房内O3含量分别极显著或显著低于普通烤房，在42 ℃起～54 ℃止极显著高于普通烤房。【结论】烘烤过程中2种烤房内气体成分相同，变化趋势相似，其中CO2体积分数和O3含量差异明显，可以用作密集烤房气调指标，以改善烟叶质量。 |
| 关键词: 烤烟 密集烤房 普通烤房 气体成分 |
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| 基金项目:国家烟草专卖局资助项目（110200302007） |
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| Difference analysis of gas composition changes in two types of curing barns during curing |
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| Abstract: |
| 【Objective】Difference of gas composition changes in bulk curing barn and conventional flue curing barn was studied,and reasons and effects of which on tobacco leaf quality were discussed.【Method】Gas compositions in two types of curing barns were detected at key temperature points of curing process by gas analyzer taking lumbar leaves as experimental material,referring to three stage curing techonology.【Result】O2 volume fraction and O2/CO2 in two types of barns first reduced and then increased,also had no significant difference at any temperature point.CO2 volume fraction and O2 contents first increased and then reduced.CO2 volume fraction changed more greatly during bulk curing and was higher than that in conventional flue-curing barn significantly at the end of 42 ℃.O3 content in bulk curing barn was extremely significantly or significantly lower at the beginning and the end of 38 ℃ respectively,and extremely significantly higher from the beginning of 42 ℃ to the end of 54 ℃ than that in conventional flue-curing barn.【Conclusion】There were the same types of gas compsitions with similar changing trend during curing,of which CO2 and O3 contents had sharp difference in two types of barns and could be used for atmosphere controlled bulk curing to improve the quality of tobacco leaf. |
| Key words: flue-cured tobacco bulk curing barn conventional flue-curing barn gas composition |
