普通煙草種內(nèi)主要栽培類型間煙葉香味成分的比較與分析
Comparative Analysis of Aroma Components Among Major Cultivar Types of Nicotiana Tabacum L.
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摘要: 以普通煙草種中常規(guī)烤煙,、特香型烤煙、香料煙和曬,、晾煙等不同品質(zhì)類型的原煙為供試材料,，應(yīng)用氣相色譜技術(shù)檢測分析了普通煙草主要栽培類型間煙葉的致香物質(zhì)成分。在檢測到的52種煙葉致香成分中,，有6種香味成分與普通煙草栽培類型的劃分密切相關(guān),。根據(jù)這6種香味成分對供試材料進(jìn)行聚類分析，結(jié)果表明,，特香型烤煙與香料煙和曬晾煙聚為一類,，而普通烤煙單獨成類。感官評吸表明,，烤煙栽培品種中均表現(xiàn)常規(guī)的烤煙香氣風(fēng)格特點,，但特香型烤煙和晾,、曬煙栽培類型間均存在一種類似香料煙的特征性香氣,，感官評吸與香味成分聚類結(jié)果一致。對香味物質(zhì)成分比較分析結(jié)果表明,，檢測到的26種致香成分在普通烤煙與其它栽培類型間存在顯著或極顯著差異,，除棕櫚酸和2-甲基四氫呋喃-3-酮外，其余24種香味成分在常規(guī)烤煙類型中含量均較其它栽培煙草類型低,。此為煙草栽培品種品質(zhì)類型的劃分和特殊香味物質(zhì)成分的鑒定奠定了生物學(xué)與應(yīng)用化學(xué)基礎(chǔ),。Abstract: The aroma components among major cultivar types of N.tabacum L. including common flue-cured tobacco, special aroma flue-cured tobacco, oriental tobacco and sun/air-cured tobacco were analyzed by Gas Chromatography. Fifty-two aroma components were detected and 6 components were significantly correlated with type classification of tobacco. Based on the 6 aroma components, special aroma flue-cured tobacco, oriental tobacco and sun/air-cured tobacco clustered together and common flue-cured tobacco came into another cluster. To evaluate the aroma phenotype of the materials in this study, sensory evaluation was developed and the results showed that special aroma flue-cured tobacco, oriental tobacco and sun/air-cured tobacco all possessed a characteristic aroma of oriental tobacco-like while common flue-cured tobacco didn’t, which was coincident with the cluster analysis. Therefore, we analyzed the aroma components comparatively between the two clusters and there were 26 aroma component detected significant difference at 0.05 or 0.01 levels. Except palmitic-acid and 2-methyltetrahydrofuran-3-one, the others 24 contents of aroma components in flue-cured tobacco were lower than other tobacco types. This study provided biology and applied chemistry research foundation for tobacco types classification and special aroma detection.
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