不同烟草类型烟叶中性致香成分和生物碱含量差异
Comparison of Composition and Contents of Neutral Aroma Components and Alkaloids in Different Types of Tobacco
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摘要: 以四川省典型产区的不同类型烟叶为材料,研究了烤烟、白肋烟、香料烟、马里兰烟、晒烟5 种类型烟叶的中性致香成分和生物碱含量变异特点和组成成分。结果表明:(1)中性致香成分总量烤烟和晒烟(万源巫烟)含量较高,大部分指标间差异显著。不同中性致香成分类群中除新植二烯外,其他4 种类别的含量均以万源巫烟最高,其中类胡萝卜素类含量显著高于其他类型。各类型烟叶中新植二烯含量所占比例均最高。(2)5 种类型烟叶生物碱含量、烟碱和降烟碱含量差异变化较大,而假木贼碱和新烟草碱变化相对较小。白肋烟降烟碱含量和烟碱转化率明显高于其他类型,不利于优质烟叶内在品质的形成。Abstract: Contents of neutral aroma constituents and alkaloids were compared in 5 types of tobacco (flue-cured, burley, Oriental, Maryland and sun-cured) from Sichuan Province. The results showed that total contents of neutral aroma components in flue-cured tobacco and sun-cured of Wanyuan were higher than other types of tobacco and most of indices of neutral aroma showed significant difference. Except neophytadiene other groups of neutral aroma in sun-cured of Wanyuan had the higest levels and the contents of products degraded by carotene were significantly higher than other kinds of tobacco. The contents of nicotine and nornicotine in 5 types of tobacco were largely different while the anabasine and anatabine showed no significant changes. The content of nornicotine and the nicotine conversion rate in burley were higher than other types obviously and that could be bad for the inner quality of tobacco.