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为了研究种植海拔高度与烤烟中性挥发性香气物质的关系,统一土壤基质与所有农艺措施,于湘西北200m～1000m范围内的不同海拔高度进行了烤烟盆栽对比试验,采用毛细管气相色谱分析法测定了不同海拔高度盆栽C3F等级初烤烟叶的中性挥发性香气物质含量,从而探讨了种植海拔高度对烤烟中性挥发性香气物质的影响。主要研究结果是:(1)随着湘西北海拔高度的上升,烤烟新植二烯、巨豆三烯酮A、巨豆三烯酮C、大马酮、二氢大马酮、3-羟基大马酮、二氢猕猴桃内酯、苯甲醛、苯乙醛及苯乙醇的含量均增加;(2)随着湘西北海拔高度的上升,烤烟3-氧化紫罗兰酮、香叶基丙酮、茄酮及降茄二酮的含量均下降;(3)随着湘西北海拔高度的上升,烤烟巨豆三烯酮B、巨豆三烯酮D、6-甲基-5-庚烯-2-酮及乙酰基吡咯的含量均变化不大;(4)烤烟新植二烯含量、类胡萝卜素降解产物类香气物质含量之和及中性挥发性香气物质总量均与湘西北海拔高度呈极显著的正相关(P<0.01);(5)提高湘西北烤烟种植的海拔高度,有利于降低烟叶燃烧时烟气的刺激性,有利于提高烟叶的香气量与整体质量,并有利于烟叶中清香类致香物质含量的增加。
In order to study the relationship between planting altitude and the volatile volatile aroma components in flue-cured tobacco, and to unify the soil matrix and all agronomic practices, comparative experiments were carried out on potted flue-cured tobacco at different altitudes within the range of 200m ~ 1000m in northwestern Hunan Province. Capillary gas chromatographic analysis The neutral volatile aroma components of flue-cured tobacco with C3F grade at different altitudes were investigated. The effects of planting altitude on neutral volatile aroma components of flue-cured tobacco were also discussed. The main results are as follows: (1) With the elevation of elevations in northwestern Hunan, the contents of flue-cured tobacco new phytadiene, megastigmatrienone A, megastigmatrienone C, damascenone, Damascenone, dihydro kiwi lactone, benzaldehyde, phenylacetaldehyde and phenylethyl alcohol all increased. (2) With the elevation of the altitude in northwestern Hunan, the contents of 3-oxide ionone, geranyl acetone, (3) As the altitude in the northwestern part of Hunan Province increased, the contents of flue-cured tobacco megastrione B, megastrione D, 6-methyl-5-hepten-2-one (4) The content of neophytadiene, the content of aroma components of carotenoid degradation products and the total amount of neutral volatile aroma components in flue-cured tobacco were all significantly different from those in northwestern Hunan (P <0.01). (5) Increasing the altitude of flue-cured tobacco planting in northwestern Hunan could reduce the irritation of flue gas when burning tobacco and improve the aroma and overall quality of tobacco leaves, Class aroma of substances increased.