马里兰烟区位品质差异化及工业适用性研究

Study on Location Quality Diversity and Industrial Suitability of Maryland Tobacco Leaves

为了明确马里兰烟叶不同区位的品质及适用性,本文以4个等级马里兰烟叶的近尖区位(T1)和中心区位(T2)作为研究对象,对比各等级近尖区位和中心区位烟叶在物理性状、感官质量和主要化学成分的差异,利用气相质谱联用仪(GC-MS)和电子鼻对其中2个等级近尖和中心区位烟叶进行检测分析,最后根据不同区位烟叶的品质差异进行工业适用性划分。结果表明:中心区位和近尖区位相比,中心区位的平衡含水率、总烟碱、钾含量较高,总糖含量较低,感官质量得分较高,香气风格更凸显;在致香成分方面,上部叶B1的中心区致香成分总量较近尖叶区高出8.86%,中部叶C1的中心区较近尖叶区高19.30%;不同区位烟叶的挥发性成分电子鼻数据经过PCA和LDA分析后,整体差异显著;因此,将叶片中心区位划为工业可用性好的"优势区",近尖区位划为"适用区"。

In order to clarify the quality and utility of the different domains of Maryland tobacco leaves,four grades leaves of the top and middle position were selected to compare the tip(T1)and center(T2)domains in terms of physical characteristic,sensory quality and main chemical component.Then classification of industrial availability was conducted according to the quality variance between the two different domains detected and analyzed by GC-MS and electronic nose.As results showed,leaves of T2 domain have higher equilibrium moisture,nicotine,potassium,lower sugar,more sensory scores and more prominent aromatic style.T2 domain have higher aromatic component than T1 by 8.86%in the top leaves(B1),but lower by 9.30%in the middle leaves(C1).According to LDA and PCA,volatile component of the two different domains comprehensively showed significant variance.In sum,the leaves of center and tip was classified into‘dominant domain’and‘available domain’in industrial availability respectively.