不同烤烟品种发育过程中多酚物质动态变化分析

Analysis on Dynamic Change of Polyphenols in Growth Process of Different Flue-cured Tobacco Varieties

研究了不同烤烟品种发育过程中多酚物质的变化动态,比较了不同烤烟品种烤后烟叶多酚物质的差异,结果表明:多酚含量总体上随着叶龄的增加呈缓慢上升趋势,但不同品种总酚含量变化又有所不同,烤后烟叶总酚含量明显高于烤前;NC89绿原酸含量呈"M"形变化,峰值出现在叶龄40 d,红大绿原酸含量呈"小幅上升─小幅下降─大幅上升"的变化趋势,到叶龄70 d达到峰值,K326绿原酸含量在生育期含量变化不大;NC89芸香苷含量呈"M"形变化,K326呈"N"形变化趋势,红大芸香苷含量呈"持续快速上升─迅速下降─迅速上升"的趋势;烤后烟叶多酚总量表现为红大>NC89>K326,但NC89和K326差异不大。芸香苷含量以K326最高,芳香值表现为红大>NC89>K326。

The dynamic changes of polyphenols in the growth process of different flue-cured tobacco varieties were analyzed,and the polyphenol contents in the flue-cured leaves of different flue-cured tobacco varieties were compared.The results showed that the polyphenol content increased slowly with the increase of leaf age as a whole,but the variation trend of polyphenol content was different among different varieties.The polyphenol content in the flue-cured leaf was obviously higher than that before baking.The chlorogenic acid content in the leaf of NC89 changed like ＂M＂ shape,and it reached peak value at the leaf age of 40 days.Hongda leaf＇s chlorogenic acid content showed the changeable trend of ＂small rising ─ small decreasing ─ large rising＂,and it was the maximum at the leaf age of 70 days.K326 leaf＇s chlorogenic acid content was nearly stable at the total growing stage.The rutin content in the leaf of NC89 changed like ＂M＂ shape,but that of K326 revealed the changeable trend of ＂N＂ shape.Hongda leaf＇s rutin content showed the variation trend of ＂continuous and rapid rising ─ rapid decline─ rapid increasing＂.The total polyphenol content in the flue-cured leaves of different flue-cured tobacco varieties had the following sequence： Hongda NC89 K326,while there was little difference in total polyphenol content between NC89 and K326.The rutin content in the leaf of K326 was the highest,and the aromatic value of different flue-cured tobacco varieties showed the following order： Hongda NC89 K326.