【摘要】 采用夹角余弦、主成分分析和偏最小二乘分析等方法对云南与津巴布韦烤烟品种烟叶中26种主要化学成分和78种致香成分从整体上进行了差异性分析.结果表明:云南与津巴布韦烤烟品种烟叶主要化学成分的相似性较高,致香成分的相似性稍差;主成分分析和偏最小二乘分析结果表明:云南烤烟品种‘KRK23’和‘云烟96’与津巴布韦烤烟品种较接近;引起云南与津巴布韦烤烟品种差异的主要化学成分为总糖、还原糖、非还原糖、蛋白质、苹果酸、茄酮、新植二烯、、西柏三烯二醇a、叶黄素和β-胡萝卜素等.更多还原

【Abstract】 Difference analysis on twenty six chemical constituents and seventy eight aroma components between flue-cured tobacco cultivars from Yunnan and Zimbabwei were carried out by using the methods of included angel cosine,principal component analysis and partial least-squares analysis.The results of included angel cosine showed that there was a high similarity in common components between Yunnan and Zimbabwei flue-cured tobacco cultivars,the similarity in aroma components was little lower.The results of principal component analysis and partial lease-squares analysis indicated that cultivar ’KRK23’ and ’Yunyan 96’ of Yunnan were similar to Zimbabwei cultivars.Distinguish difference was observed in the content of total sugar,reducing sugar,non-reducing sugar,protein,malic acid,6,8-Nonadien-2-one,8-methyl-5-(1-methylethyl),Neophytadiene,lutein,β-carotene and 4,8,13-Cyclotetradecatriene-1,3-diol,1,5,9-trimethyl-12-(1-methylethyl),which that lead to the difference between Yunnan and Zimbabwei flue-cured tobacco cultivars.更多还原