河南主产烟区烤烟非挥发性有机酸含量

Contents of Nonvolatile Organic Acids in Flue-cured Tobacco from Main Tobacco Growing Areas in Henan

为了研究河南主产烟区烤烟非挥发性有机酸的含量特点,采用气相色谱法测定并比较了河南不同产区、不同等级烤烟样品的非挥发性有机酸含量,分析了非挥发性有机酸组分与其总量的相关关系,根据非挥发性有机酸含量对烤烟样品进行了聚类分析.结果表明：①河南主产烟区烤烟样品非挥发性有机酸总量在99.32～181.90 mg/g之间,平均含量为134.10 mg/g;非挥发性有机酸各组分之间存在较大的变异.②非挥发性有机酸总量在不同产区之间表现为：郏县＞许昌＞洛宁＞陕县＞灵宝＞鹿邑＞襄城＞卢氏＞社旗.③不同等级间非挥发性有机酸总量的差异极显著,其含量高低表现为：X2F＞B2F＞C3F.④非挥发性有机酸总量与苹果酸、柠檬酸和亚麻酸含量极显著正相关,与丙二酸含量显著正相关.⑤聚类分析结果将河南主产烟区烤烟分为3类.

To investigate the characteristics of nonvolatile organic acid contents in flue-cured tobacco from the main tobacco growing areas in Henan,the contents of nonvolatile organic acids in tobacco samples of different grades from different areas were determined by gas chromatography method and compared.The correlation between the content of individual nonvolatile organic acid and the total content of nonvolatile organic acids was analyzed.The cluster analysis of tobacco samples was conducted on the basis of their nonvolatile organic acid contents.The results showed that：1） The total contents of nonvolatile organic acids in samples ranged from 99.32 to 181.90 mg/g with the average of 134.10 mg/g.There existed great variations between different nonvolatile organic acids.2） The areas in the order of total nonvolatile organic acid content were Jiaxian ＞ Xuchang ＞ Luoning ＞ Shanxian ＞ Lingbao ＞ Luyi ＞ Xiangcheng ＞ Lushi ＞ Sheqi.3） The total contents of nonvolatile organic acids in tobacco samples of different grades extremely significantly differed in the order of X2F ＞ B2F ＞ C3F.4） The total content of nonvolatile organic acids extremely significantly positively correlated to the contents of malic acid,citric acid and linolenic acid,and significantly positively correlated to malonic acid content.5） Henan tobacco samples were classified into three categories according to the results of cluster analysis.