不同生态区烤烟K326质量特征差异分析

Differences in quality characteristics of flue-cured tobacco K326 in distinct ecological regions

对福建泰宁、云南祥云、河南宜阳生态区烤烟K326主要质量特征差异进行了研究.结果表明,泰宁生态区和祥云生态区烤烟为清香型,宜阳生态区烤烟为浓香型.泰宁生态区和祥云生态区烤烟植株相对高大,而宜阳生态区烤烟植株相对较小.泰宁生态区和祥云生态区烤烟类胡萝卜素及其降解产物(β-大马酮、β-二氢大马酮、藏花醛、β-环柠檬醛、二氢猕猴桃内酯等)、类胡萝卜素降解产物总量,叶绿素及其降解产物新植二烯,以及烤烟还原糖和总糖等指标含量高于宜阳生态区烤烟.宜阳生态区烤烟类胡萝卜素相关降解产物(茄酮、巨豆三烯酮1、巨豆三烯酮2、巨豆三烯酮4等)、苯丙氨酸降解产物(苯甲醛、苯乙醛)及其总量,以及烤烟总碱和氯等指标含量高于泰宁生态区和祥云生态区烤烟.可见,不同生态区烤烟K326外观形态、常规化学成分及香气物质含量、香型均存在差异.

Main quality characteristics of flue-cured tobacco （FCT） K326 from three ecoregions, namely Taining county of Fujianprovince, Xiangyun country of Yunan province and Yiyang country of Henan province were compared. Sensory evaluation showedthat flue-cured tobacco fi＇om Taining and Xiangyun was delicate-flavor while it was strong-flavor in Yiyang. Leaves of flue-cured to-bacco K326 plants in Taining and Xiangyun were larger than those in Yiyaug. Carotenoids contents and its degradation products （ β-damascenone, β-dihydrogen damascenone, crocein aldehyde, β-rings citral, dihydroactinidiolide, etc.）, total carotenoid degrada-tion products, chlorophyll and its degradation product of neophytadiene, reducing sugar and total sugar in flue-cured tobacco fromTaining and Xiangyun were higher than those in Yiyang. Total carotenoid degradation products （solanone, megastigmatrienonel, me-gastigmatrienone 2 and megastigmatrienone 4） , phenylalanine degradation products （benzaldehyde and phenylacetaldehyde） , totalphenylalauine degradation products, total alkali and chlorine in flue-cured tobacco fi＇om Yiyang were higher than those in Tainingand Xiangyun. To summarize, there were differences in flavor type, appearance, content of routine chemical components and aromasubstances in flue-cured tobacco K326 in different ecological regions.