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| 基于动态顶空成分的烟叶原料香型特征判别分析(英文) | |
| 引用本文： | 郜强,余苓,陈磊,刘百战,房鼎业.基于动态顶空成分的烟叶原料香型特征判别分析(英文)[J].计算机与应用化学,2012,29(3):309-312. |
| 作者姓名： | 郜强 余苓 陈磊 刘百战 房鼎业 |
| 作者单位： | 1. 华东理工大学化工学院,200237,上海;上海烟草集团有限公司,200082,上海 2. 上海烟草集团有限公司,200082,上海 3. 华东理工大学化工学院,200237,上海 |
| 摘 要： | 传统上,国产烤烟根据产地和感官评吸结果分为浓香、清香和中间香三大级别。为了探索国产烤烟香型与香气成分之间的联系,利用吹扫捕集-GC/MS,建立根据不同香型分组的72种烟叶样本的香气成分指纹图谱,并采用判别分析技术进行样本的分类判别。结果显示:对于34个化学变量,浓香、清香和中间香典型判别函数,交叉验证准确率为83.6%。利用主成分分析(PCA)对不同香型烤烟进行区分,获得与感官评价一致的结果。因此,基于顶空香气成分的判别分析能较好地表征烟叶香型归属,有利于揭示不同香型烟叶的化学特征。 |
| 关 键 词： | 烟叶香气成分 DHS-GC/MS 挥发性成分 主成分 判别分析 |
Data discriminant analysis of aroma characteristics of tobacco based on DHS-GC/MS volatile data |
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| Gao Qiang , Yu Ling , Chen Lei , Liu Baizhan , Fang Dingye.Data discriminant analysis of aroma characteristics of tobacco based on DHS-GC/MS volatile data[J].Computers and Applied Chemistry,2012,29(3):309-312. | |
| Authors: | Gao Qiang Yu Ling Chen Lei Liu Baizhan Fang Dingye |
| Affiliation: | 1*) (1.School of Chemical Engineering,East China University of Science Technology Shanghai,200092,Shanghai,China) (2.Shanghai Tobacco Group Co.,Ltd.,Shanghai,200082,China) |
| Abstract: | According to the geographical origin,the three classifications of flue cured tobaccos have been assessed through the sensory evaluation.They are rich,moderate and freshly flavor.In the paper,a Dynamic Headspace method using Purge and Trap GC/MS was developed for analysis of tobaccos.The volatiles chromatographs(aroma Fingerprints)of 72 tobaccos were obtained by DHS-GC/MS.By Principal Components Analysis,the tobaccos GC profiles were divided into three groups as that had been distinguished by sensory experts.The Discriminant Analysis found three models on the basis of 34 volatile constituents.The model objectively predicted rich,moderate and freshly characteristics of tobacco observations with good cross validation(83.6%). |
| Keywords: | tobacco aroma DHS-GC/MS volatile PCA DA |
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